1313477 六、發明說明： 【發明所屬之技術領域】 本發明涉及一種場發射顯示裝置，尤指一種發 光較均勻之場發射顯示裝置。。 【先前技術】 當前世界上使用最廣泛的顯示器為陰極射線管 (Cathod Ray Tude，CRT)顯示器，但隨著對圖像清晰 度及顯示屏幕尺寸要求的越來越高，咖顯示哭已 越來越無法滿；1人們的需求。近年來，平板顯^ 發f迅速，且被廣泛應用於個人電腦等電子領域。 目前應用最為普遍的平板顯示器為液晶顯示器， 惟’液晶顯示器在製造方面存在諸多缺點，如，在 玻璃面板上沈積無定型矽之速度較慢、良率較低。 其次，液晶顯示器需要較高能量之背光源，然，背 光源產生之大部分能量都不能被利用而造成浪費。 曰顯示器之顯示圖像受環境亮度及視角 =，：在明亮的環境及在較寬的視角很難看到其 夜晶顯示器的響應時間取決於液晶材料 :所力:電場的響應時間，故，液晶顯示器之;= 广纟型液晶顯示器之響應時間 至一述缺點限制液晶顯示器在如 ;; 視、大型顯示器等許多方面的應用。相比液曰；: 器’電_則更適合應用於高清晰度 1313477 型顯示器。惟，電漿顯示器 生之熱量亦太多。 錄夕且其產 :年來在液晶顯示器及電漿顯示器基礎上又發 板顯：器’場發射顯示裝置即為該平板 σ 種。％發射顯示裝置通過對陰極上之尖 知細*加電麗導致雷子你小 陽 知發出，然後轟擊沈積在 ί%極板上之勞光層而恭止 wI X先產生圖像。場發射顯示裝 s ^ 电水頌不盗相比，具有更高的對 比度、更廣的視角、更高的 P 文回的冗度、更低的能量損耗、 更紐的響應時間及更寬的工作溫度範圍。 :種先前技術之場發㈣示裝置可參照第— 圖，發射顯示裝置1包括-第-基板6, 一第 反3’ 一金屬膜9’ -槽絕緣體8，—閑極7, 端10, 一透明電極4及_螢光層5 ， 金屬膜9作為陰極使用，读日日 Μ I , 透明電極4作為陽極使用， 筏數尖知10係作為電子發射源。 金屬膜9位於第一芙妬&,, 於m Q U 土 上，槽絕緣體8形成 於金屬膜9上且該槽絕緣體 … 版s將閘極7與金屬膜9 IW離開，禝數尖端1〇垂直排 電極4位於第二基板3f#，金屬膜9上’透明 , 螢光層5塗佈於透明電 極4上。 惟 ，上述場發射顯示裴置具以下缺陷： 1313477 首先，尖端製作困難。 電子發射效率將直接影響其發 不政置中， 前而言，尖端之製造工藝仍存：辨但就目 得電子發射效率較低從 ：：〜故’使 光及分辨_。 裝置之發 現尖端之均句性。也不太容易實 成，因而少許單元出現、門:、像素都由多個單元掮 f素之功⑶，但如果尖端在像素上分佈不 顯示器上將呈現出不穩定之圖像。 再次’場發射顯示裝置係利用電子轟擊榮光声 =自發㈣發光’但由於排列在像素上之尖端較難 現均勻性，從而造成從尖端發射出之電子將不均 句的轟擊在榮光層上，故，使得發出的光線也將呈 現出不均勾之現象。同時，為提高圖像亮度，陽極 上的螢光層通常較薄，故，造成電子發射源所發之 電子不旎被螢光層充分吸收，由此降低場發射顯示 裝置之電光轉換效率，同時造成發光不均勻之現象 發生。 有鑑於此’提供—種改進以上缺點之場發射顯 示裝置實為必要。 【發明内容】 本發明之目的在於提供一種發光較均勻之場發 1313477 射顯示裝置。 本發明係提供一種場發射顯示裝置，其包括一 :極、，—高電阻層’複數尖端，一閘極，一陽極及 螢光層。其中，咼電阻層形成於陰極上且具電阻 =衝之作用，複數尖端垂直排列於高電阻層上，告 ::與間極間產生一電塵時，電子將從複數尖端； :把出來’螢光層塗佈於陽極上，該螢光層中包括 =散射粒子，當陽極與間極間產生一加速電壓 ""^數大端發射出之電子將在該加速電壓吸引下 :辜陽極上之螢光層而發光’螢光層所發之光線係 透過陽極出射以實現圖像顯示。 與先前技術相比，本發明場發射顯示裝置之優 點為於螢光層中加人複數散射粒子，尖端發射出之 電子受陽極板上電壓加速吸引撞擊螢光粉發出螢 光’此時在散射粒子作用下，人射之螢光將向各方 向散射，從而提高光束之擴散性。 【實施方式】 睛爹照第二圖與第 圖 尽發明之場發射顯示 裝置包括複數像素單元2，其中每一像素單元2包 括：一基板150、-陰極152、—高電阻層154、複 數尖端140、一槽絕緣體142、一閘極156、一支稽 體130、一透明面板16〇、一陽極162及一戶 164。 θ 1313477 該陰極152位於基板150上，該高電阻層ι54 形成於陰極152上，該複數尖端14〇垂直排列於高 電阻層154上，該槽絕緣體142將陰極152與閘極 156分隔開，該支撐體13〇將閘極156與陽極 分隔開，該陽極162位於透明面板16〇上，該螢光 層164塗佈於陽極162上且其中具複數散射粒子 132。 其中，形成於基板150上之陰極152可由金屬 製成，故，其具良好之導電性。高電阻層154可由 矽之氧化物組成，其具電阻緩衝之作用。複數尖端 140作為電子發射源使用。支撐體13〇之高度可用 來控制閘極156與陽極162間之距離，以有效降低 考X射電壓。％極162因受電子轟擊，故採用良導電 導熱材料製作，如金屬，陽極162可直接接地，從 而簡化電路設計並提昇散熱效果，增加本發明場發 射顯示裝置之可靠度。散射粒子132可由二氧化石夕 f成，但粒子之大小及數量會影響人射螢光之擴 散，粒子越大數量越多則擴散效果越好，視角也越 大，但是輝度會降低，故需合理選取散射粒子之大 小，本實施方式散射粒子132之大小介於1μιη〜 5|0μιη間，且該散射粒子132之大小或密度沿與複數 尖端14〇相對之陽極162表面遠離之方向逐漸增大。 本發明場發射顯示裝置之像素單元2工作時， 1313477 一發射電壓加在陰極152與閘極156間使電子自複 數穴端140發出而形成電子流，該電子流在一形成 於，極156與陽極162間加速電壓之吸引下轟擊位 ;陽極162之螢光層164而發光’所發之光經螢光 層中散射粒子132散射後將向各方向散射，從而提 向光束之擴散。 ，散射粒子132之大小或密度沿與複數尖端 ::之陽極162表面遠離之方向逐漸增大，當 :知140發射出之電子束轟擊螢光層！64後，螢光 將自發輻射發光，該光線在散射粒子132之 士下’將朝各個方向發散，由於散射粒子132之 ==沿與複數尖端14〇相對之陽極162表面 撞逐漸增大，故’電子束與散射粒子m :機率將沿與複數尖端14〇相對之陽極 不=方增大，因此，光線之散射角度將 之視角’由此提高發光之均勾性具更廣 提出發明符合發明專利要件，爰依法 實施方式’舉凡熟悉本案技藝之人士本 發明精神所作之等效修飾或^案 之争請專利範圍内。 白應包含於以下 【圖式簡單說明】 1313477 第一圖係一種先前技術場發射顯示裝置之截面圖。 第二圖係本發明場發射顯示裝置像素單元之剖視 圖。 第三圖係第二圖第III部份之放大圖。 【主要元件符號說明】 基板 150 陰極 152 閘極 156 陽極 162 支撐體 130 高電阻層 154 透明面板 160 複數尖端 140 槽絕緣體 142 螢光層 164 像素單元 2 散射粒子 1321313477 VI. Description of the Invention: [Technical Field] The present invention relates to a field emission display device, and more particularly to a field emission display device having relatively uniform light emission. . [Prior Art] The most widely used display in the world is the Cathod Ray Tude (CRT) display, but with the increasing demand for image clarity and display screen size, the coffee display has become more and more crying. The more unsatisfied; 1 people's needs. In recent years, flat panel display has been rapidly developed and widely used in electronic fields such as personal computers. Currently, the most commonly used flat panel display is a liquid crystal display. However, the liquid crystal display has many disadvantages in manufacturing, for example, the deposition of an amorphous crucible on a glass panel is slow and the yield is low. Second, liquid crystal displays require a higher energy backlight, however, most of the energy generated by the back light source cannot be utilized and is wasted.显示The display image of the display is subject to ambient brightness and viewing angle =,: It is difficult to see the response time of the night crystal display in a bright environment and in a wide viewing angle depending on the liquid crystal material: force: response time of the electric field, therefore, liquid crystal The display's response time to the shortcomings of the wide-area liquid crystal display limits the application of the liquid crystal display in many aspects such as visual and large displays. Compared to liquid helium;: 'Electric_' is more suitable for high-definition 1313477 displays. However, the plasma display generates too much heat. Recording the evening and its production: In the past years, based on the liquid crystal display and the plasma display, the panel display device is the sigma type. The % emission display device causes the ray to be emitted by the tip of the cathode, and then bombards the layer of light deposited on the %% plate to compensate the wI X to produce the image first. The field emission display has a higher contrast ratio, a wider viewing angle, a higher redundancy of the P-text, a lower energy loss, a longer response time and a wider range than the s ^ electric water raft. range of working temperature. The prior art field (four) display device can refer to the first figure, the emission display device 1 includes a --substrate 6, a third anti-3' metal film 9'-slot insulator 8, a idle pole 7, a terminal 10, A transparent electrode 4 and a luminescent layer 5 are used as the cathode, and the solar cell 9 is used as the anode, and the transparent electrode 4 is used as the anode. The metal film 9 is located on the first 妒 妒 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The vertical discharge electrode 4 is located on the second substrate 3f#, and the metal film 9 is 'transparent, and the phosphor layer 5 is coated on the transparent electrode 4. However, the above field emission display has the following defects: 1313477 First of all, the cutting edge is difficult to manufacture. The efficiency of electron emission will directly affect its non-government. In the former, the cutting-edge manufacturing process still exists: but it is obvious that the electron emission efficiency is lower from ::~, so light and resolution. The device found the verbality of the tip. It is also not easy to implement, so a few cells appear, the gate: the pixel is composed of multiple cells (3), but if the tip is not distributed on the pixel, the display will show an unstable image. Again, the 'field emission display device uses electron bombardment glory = spontaneous (four) luminescence' but because the tip arranged on the pixel is more difficult to uniform, causing the electrons emitted from the tip to bombard the uneven layer on the glory layer. Therefore, the emitted light will also appear to be uneven. At the same time, in order to improve the brightness of the image, the phosphor layer on the anode is usually thin, so that the electrons emitted from the electron emission source are not sufficiently absorbed by the phosphor layer, thereby reducing the electro-optical conversion efficiency of the field emission display device. Causes uneven illumination. In view of this, it is necessary to provide a field emission display device which improves the above disadvantages. SUMMARY OF THE INVENTION An object of the present invention is to provide a field emission 1313477 radiation display device with relatively uniform illumination. The present invention provides a field emission display device comprising: a pole, a high resistance layer' complex tip, a gate, an anode and a phosphor layer. Wherein, the tantalum resistive layer is formed on the cathode and has the function of resistance=punching, and the plurality of tips are vertically arranged on the high-resistance layer, and: when an electric dust is generated between the interelectrode, the electrons will be from the complex tip; The phosphor layer is coated on the anode, and the phosphor layer includes = scattering particles, and an accelerating voltage is generated between the anode and the interpole. The electrons emitted from the big end will be attracted by the accelerating voltage: The phosphor layer on the anode emits light. The light emitted by the phosphor layer is emitted through the anode to realize image display. Compared with the prior art, the field emission display device of the present invention has the advantages of adding a plurality of scattering particles in the phosphor layer, and the electrons emitted from the tip are accelerated by the voltage on the anode plate to attract the fluorescent powder to emit fluorescence. Under the action of particles, the fluorescent light emitted by humans will scatter in all directions, thereby increasing the diffusivity of the beam. [Embodiment] The field emission display device of the invention includes a plurality of pixel units 2, wherein each pixel unit 2 includes: a substrate 150, a cathode 152, a high resistance layer 154, and a plurality of tips. 140, a slot insulator 142, a gate 156, a body 130, a transparent panel 16A, an anode 162 and a household 164. θ 1313477 The cathode 152 is located on the substrate 150. The high resistance layer ι54 is formed on the cathode 152. The plurality of tips 14 〇 are vertically arranged on the high resistance layer 154. The slot insulator 142 separates the cathode 152 from the gate 156. The support 13 分隔 separates the gate 156 from the anode. The anode 162 is positioned on the transparent panel 16 涂布. The phosphor layer 164 is coated on the anode 162 and has a plurality of scattering particles 132 therein. Among them, the cathode 152 formed on the substrate 150 can be made of metal, so that it has good electrical conductivity. The high resistance layer 154 may be composed of an oxide of tantalum which has a function of resistance buffering. The complex tip 140 is used as an electron emission source. The height of the support 13〇 can be used to control the distance between the gate 156 and the anode 162 to effectively reduce the X-ray voltage. Since the % pole 162 is bombarded by electrons, it is made of a good conductive and heat conductive material, such as metal, and the anode 162 can be directly grounded, thereby simplifying the circuit design and improving the heat dissipation effect, and increasing the reliability of the field emission display device of the present invention. The scattering particles 132 can be formed by the oxidized stone, but the size and number of the particles affect the diffusion of the human fluorescent light. The larger the number of particles, the better the diffusion effect and the larger the viewing angle, but the luminance is lowered, so The size of the scattering particles 132 is appropriately selected. The size of the scattering particles 132 is between 1 μm and 5 μm, and the size or density of the scattering particles 132 is gradually increased along the surface of the anode 162 opposite to the plurality of tips 14 远离. . When the pixel unit 2 of the field emission display device of the present invention operates, a 1313477 emission voltage is applied between the cathode 152 and the gate 156 to cause electrons to be emitted from the plurality of hole terminals 140 to form an electron current. The electron current is formed at the pole 156 and The attraction of the accelerating voltage between the anodes 162 is at the bombardment level; the phosphor layer 164 of the anode 162 emits light. The emitted light is scattered by the scattering particles 132 in the phosphor layer and then scattered in various directions to promote the diffusion of the beam. The size or density of the scattering particles 132 gradually increases along the direction away from the surface of the complex tip :: anode 162, when: the electron beam emitted by the 140 is bombarded with the fluorescent layer! After 64, the fluorescent light will emit spontaneous emission, and the light will diverge in various directions under the scattering particles 132, since the == of the scattering particles 132 gradually increases along the surface of the anode 162 opposite to the complex tip 14〇, 'Electron beam and scattering particle m: the probability will increase along the anode opposite to the complex tip 14〇. Therefore, the scattering angle of the light will make the viewing angle of the lighter. Patent requirements, 爰 实施 实施 ' 举 举 举 举 举 举 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 等效 。 等效 等效 等效White should be included in the following [Simplified description of the drawings] 1313477 The first figure is a cross-sectional view of a prior art field emission display device. The second figure is a cross-sectional view of a pixel unit of the field emission display device of the present invention. The third figure is an enlarged view of part III of the second figure. [Main component symbol description] Substrate 150 Cathode 152 Gate 156 Anode 162 Support 130 High resistance layer 154 Transparent panel 160 Complex tip 140 Slot insulator 142 Fluorescent layer 164 Pixel unit 2 Scattering particles 132