1241617 玖、發明說明 内容、實施方式及圖式簡單說明） (發明說明應敘明：發明所屬之技術領域、先前技術 【發明所屬之技術領域】 本發明係關於一種場發射顯示哭及並贫 〇及具在封裝置，特別係關於一種密 封性能優良且使用壽命長之場發射顯示器之密封裝置。 【發明背景】 平面顯示器發展迅速’其用於顯示電腦及其他電子設備產生之視覺 圖像。平面顯示器，如冷陰極場發射顯示器，與習知陰極射線管顯示器 相比，具有重量輕及耗電小之特點。 場發射顯示器藉由發射電子撞擊螢光顯示屏發光以顯示視覺圖像。參 場發射顯示n主要包括形賴示幕之前面板及具有電子發射端之後面 板。後面板包括有用於控制電子發射端之電子發射之電路。， 電子發射端與該前面板相離形成間隙。為獲得穩定之顯示效果，電 子發射端需在真空壓強小於10—6托之真空環境下發射電子。故，場發射 顯示器需良好之真空密封確保其内部真空環境。 習知技術藉由在場發射顯示器内設置吸氣劑以獲得更好之真空環 境。請參照第二圖，美國專利第5, 688, 708號（公告日為1997年u月 18日）揭示一種場發射顯示器1〇〇，其包括：覆有螢光層1〇4之陽極板 102、具有複數電子發射端108之陰極板106、及安置於陰極板1〇6與陽 極板102之間之側壁112，側壁112之間形成一定間距。採用坡壤材料 密封劑（未標示）將側壁丨丨2固定於陰極板1〇6與陽極板1〇2上以形成定 〇續次頁（發明說明頁不敷使用時，請註記並使用續頁） Ϊ241617 發明說明If胃 °亥場發射顯示器100進一步包括複數與密封區域相通之收容腔118，且 第―、第二吸氣劑120、122分別收容於不同之收容腔118内。第一、第 二吸氣劑120、122可吸除密封區域内之殘留氣體以提高真空環境。然 而’該場發射顯示器1〇〇具複數收容腔U8使其體積較大，且因收容腔 118向外凸出使其安裝到系統中產生不便。另外，玻璃材料密封劑、陰 極板106、陽極板1〇2及側壁Π2之間熱膨脹係數不同，長期使用會因 外界環境溫度變化致使陰極板106、陽極板1〇2及側壁U2之間之密封 失效，降低場發射顯示器之使用壽命及可靠性。 · 【發明目的】 本發明目的在於提供一種具良好密封性且結構堅固之用於場發射顯 示器之密封裝置。 本發明之另一目的在於提供一種使用壽合長且可靠性高之場發射顯 示器。 【發明特徵】 本發明場發射顯示器包括：覆有螢光層之陽極板、陰極板、與陰極· 板相抵靠之緩衝層、形成於緩衝層上之電子發射端、矽薄膜層及具内部 空間之密封裝置。陽極板、螢光層、緩衝層、電子發射端、陰極板及石夕 薄膜層收容於該内部空間内。該密封裝置包括前面板、後面板及側壁， 該側壁固定於前面板與後面板之間形成該内部空間，且該側壁由鐵鎳鈷 合金製成，該合金含鐵54% □續次頁（發明說明頁不敷使用時，請註記並使用續頁） 1241617 發明說明續頁 ， 、鎳29%、鈷17%。為提高機械強度與真空環境，密封裝置進一步包括 由吸氣材料組成之内壁，該内壁可實現間隔與固定之作用，同時，又提 供較強之除氣效果，可吸除水汽、氧氣、二氧化碳及其他氣體，故場發 射顯示器之使用壽命及可靠性得到提高。 【較佳實施例說明】 請參照第一圖所示’係本發明場發射顯示器1，其包括一覆有營光 層40之陽極板30、一與螢光層40相離之、$衝層60、複數形成於緩衝層 上60之電子發射端50、一與緩衝層60抵靠之陰極板70、一矽薄膜層· 80及一密封裝置5’該雄、封裝置5界定一内部空間（未標示）。陽極板3〇、 螢光層40、緩衝層60、電子發射端50、陰極板70及石夕薄膜層80設置 於密封裝置5之内部空間内。 密封裝置5包括前面板10、後面板20及側壁90。側壁90固定於前 面板10與後面板20間以形成密封之内部空間。 前面板10及後面板20可採用玻璃製造。側壁9〇由鐵鎳鈷合金製 成，且鐵鎳鈷合金中含鐵54%、鎳29%及鈷17%。鐵鎳鈷合金含雜質碳不φ 超過0· 1%。鐵鎳鈷合金強度很大，其拉應力為4430千克/平方釐米，壓 應力為3000千克/平方釐米。鐵鎳鈷合金與製成側壁90之玻璃材料之熱 膨脹係數相一致，側壁90設於前面板10、後面板20之間以起到機械隔 離作用。為增強密封裝置5之機械強度及内部空間之真空環境，密封裝 置5進一步包括由吸氣材料製造之内壁92，該吸氣材料具機械強度與穩 定性，内壁92收容 □續次頁 （發明說明頁不敦使用時，請註記並使用續頁） 7 1241617 發明說明續頁 * 在内部空間且雜_ 9〇。内壁92之吸紐_娜狀鐵祕合金 Cndiovarl-x，其中x在〇. 1到〇. 5範圍内。鉻可吸除殘留於密封裝置5 内之水汽、氧氣、二氧化碳及其他氣體。 陽極板30係形成於前面板10上可透光之透明電極，透明電極可採 用氧化銦錫製造。螢光層40因受電子發射端5〇發出之電子撞擊而發光。 陰極板70由導電材料製成，矽薄膜層8〇形成於後面板2〇上，位於陰極 板70與後面板2〇之間，使陰極板7〇與後面板2〇之間有效接觸。 安裝時，内壁92依附於側壁90，側壁90設置於前面板10與後面鲁 板20之間，側壁9〇與前面板1〇、後面板2〇接觸區可採用玻璃密封劑 密封以形成密封之内部空間。鐵鎳鈷合金製成之側壁9〇熔點高於玻璃材 料製成之前面板1〇及後面板20熔點，亦可對前面板、後面板2〇與 側壁90接觸區域加熱，使前面板1〇、後面板2〇與側壁9〇接觸區域軟 化使側壁90固定到前後面板上形成密封之内部空間。内壁92可吸除内 部空間之殘留氣體以提高真空度，且内壁92亦增強密封裝置5之強度。 工作時，發射電壓施加於陰極板7〇與陽極板3〇之間，電子從電子φ 發射端50發出並於電子發射端5〇至陽極板3〇之間加速，最後被螢光層 40所接收，螢光層4〇發光而實現顯示。 側壁90、前面板1〇及後面板20具相同之熱膨脹係數，不會因螢光 層40產生之熱量及外部溫度的變化影響側壁9〇及前面板i〇、後面板2〇 之間的密封，可確保密封裝置5的密封性及可靠性。側壁 〇續次頁（發明說明頁不敷使用時’請註記並使用續頁） 8 1241617 90採用強倾大的_私金且内 - 與後面板20提供較強之土 认付於側壁90，為前面板10 強之除_，可崎錢^^_裝置5 _额。_供較 高。 4好之娜，且使㈣命及可靠性得到提 綜上所述，本發明符合發明專利要件，爰依法提出專利申請。惟， 以上所述者僅為本發明之較佳實施例，舉4熟悉本案技藝之人士，在援 依本案創作精神所作之等效修飾或變化，皆應包含於以下之申請專利範 圍内。1241617 (Brief description of the invention, description of the embodiment, and the drawings) (The description of the invention should state: the technical field to which the invention belongs, the prior art [the technical field to which the invention belongs] The present invention relates to a field emission display crying and poor. The sealing device is particularly a sealing device for a field emission display with excellent sealing performance and long service life. [Background of the Invention] Flat-panel displays are rapidly developing, and are used to display visual images generated by computers and other electronic devices. Flat Displays, such as cold-cathode field emission displays, are lighter and consume less power than conventional cathode ray tube displays. Field emission displays emit light by striking electrons on a fluorescent display screen to display visual images. The emission display n mainly includes a front panel and a rear panel with an electron emitting end. The rear panel includes a circuit for controlling the electron emission of the electron emitting end. The electron emitting end is separated from the front panel to form a gap. In order to obtain stability Display effect, the electron emitting end needs to be under a vacuum pressure of less than 10-6 Torr It emits electrons under the environment. Therefore, the field emission display needs a good vacuum seal to ensure its internal vacuum environment. The conventional technology uses a getter in the field emission display to obtain a better vacuum environment. Please refer to the second picture, the United States Patent No. 5, 688, 708 (published on January 18, 1997) discloses a field emission display 100, which includes an anode plate 102 covered with a fluorescent layer 104 and a plurality of electron emission terminals 108. The cathode plate 106 and the side wall 112 disposed between the cathode plate 106 and the anode plate 102, and a certain distance is formed between the side walls 112. A slope material sealant (not labeled) is used to fix the side wall 丨 2 to the cathode plate 〇06 and anode plate 102 to form a fixed page. Continued pages (if the description page of the invention is insufficient, please note and use the continued page) Ϊ241617 Description of the invention If the stomach ° Hel field emission display 100 further includes a plurality and a sealed area The same receiving chamber 118, and the first and second getters 120 and 122 are respectively contained in different receiving chambers 118. The first and second getters 120 and 122 can suck out the residual gas in the sealed area to improve Vacuum environment. And 'the field emission display 100 has a plurality of receiving chambers U8 to make it larger in volume, and it is inconvenient to install in the system because the receiving chamber 118 protrudes outward. In addition, glass material sealant, cathode plate 106, anode The thermal expansion coefficients between the plate 102 and the side wall Π2 are different. Long-term use will cause the seal failure between the cathode plate 106, the anode plate 102, and the side wall U2 due to changes in the external ambient temperature, reducing the life and reliability of the field emission display. [Objective of the invention] The object of the present invention is to provide a sealing device for a field emission display with good sealing and strong structure. Another object of the present invention is to provide a field emission display with a long lifetime and high reliability. [Features of the invention] The field emission display of the present invention includes: an anode plate covered with a fluorescent layer, a cathode plate, a buffer layer abutting the cathode · plate, an electron emission terminal formed on the buffer layer, a silicon thin film layer, and an internal structure. Space sealing device. The anode plate, the fluorescent layer, the buffer layer, the electron emission terminal, the cathode plate, and the Shi Xi film layer are contained in the internal space. The sealing device includes a front panel, a rear panel and a side wall, the side wall is fixed between the front panel and the back panel to form the internal space, and the side wall is made of an iron-nickel-cobalt alloy containing 54% iron. When the description page of the invention is insufficient, please note and use the continuation page) 1241617 The description page of the invention description, nickel, 29%, cobalt 17%. In order to improve the mechanical strength and vacuum environment, the sealing device further includes an inner wall composed of a getter material. The inner wall can realize the function of spacing and fixing, and at the same time, it can provide a strong degassing effect. It can absorb water vapor, oxygen, carbon dioxide and For other gases, the service life and reliability of the field emission display are improved. [Description of the preferred embodiment] Please refer to the first figure, which is a field emission display 1 of the present invention, which includes an anode plate 30 covered with a camping layer 40, a separation layer separated from the fluorescent layer 40, and a $ punch layer. 60. A plurality of electron emitting terminals 50 formed on the buffer layer 60, a cathode plate 70 abutting the buffer layer 60, a silicon thin film layer 80, and a sealing device 5 ', the male and sealing device 5 define an internal space ( Not labeled). The anode plate 30, the fluorescent layer 40, the buffer layer 60, the electron emission terminal 50, the cathode plate 70, and the Shixi film layer 80 are disposed in the internal space of the sealing device 5. The sealing device 5 includes a front panel 10, a rear panel 20 and a side wall 90. The side wall 90 is fixed between the front panel 10 and the rear panel 20 to form a sealed internal space. The front panel 10 and the rear panel 20 may be made of glass. The sidewall 90 is made of an iron-nickel-cobalt alloy, and the iron-nickel-cobalt alloy contains 54% of iron, 29% of nickel, and 17% of cobalt. Iron-nickel-cobalt alloy contains impurity carbon not more than 0.1%. Iron-nickel-cobalt alloys are very strong, with a tensile stress of 4430 kg / cm2 and a compressive stress of 3000 kg / cm2. The thermal expansion coefficient of the iron-nickel-cobalt alloy is consistent with that of the glass material made of the side wall 90. The side wall 90 is provided between the front panel 10 and the rear panel 20 for mechanical isolation. In order to enhance the mechanical strength of the sealing device 5 and the vacuum environment of the internal space, the sealing device 5 further includes an inner wall 92 made of a getter material, which has mechanical strength and stability. The inner wall 92 accommodates the □ Continued page (Explanation of the invention) When the page is not used, please note and use the continuation page) 7 1241617 Description of the invention Continuation page * In the internal space and miscellaneous_ 9〇. The inner wall 92's suction button_na-like iron secret alloy Cndiovarl-x, where x is in the range of 0.1 to 0.5. Chromium can remove moisture, oxygen, carbon dioxide and other gases remaining in the sealing device 5. The anode plate 30 is a transparent electrode formed on the front panel 10, and the transparent electrode can be made of indium tin oxide. The fluorescent layer 40 emits light by being impacted by electrons emitted from the electron emitting terminal 50. The cathode plate 70 is made of a conductive material. A silicon thin film layer 80 is formed on the rear panel 20 and is located between the cathode plate 70 and the rear panel 20 so that the cathode plate 70 and the rear panel 20 are in effective contact. During installation, the inner wall 92 is attached to the side wall 90. The side wall 90 is disposed between the front panel 10 and the rear panel 20. The contact area of the side wall 90, the front panel 10, and the rear panel 20 may be sealed with a glass sealant to form a seal. Interior space. The melting point of side wall 90 made of iron-nickel-cobalt alloy is higher than the melting point of front panel 10 and rear panel 20 made of glass material. The contact area of front panel, rear panel 20 and side wall 90 can also be heated to make front panel 10, The contact area between the rear panel 20 and the side wall 90 is softened so that the side wall 90 is fixed to the front and rear panels to form a sealed internal space. The inner wall 92 can suck out the residual gas in the inner space to increase the degree of vacuum, and the inner wall 92 also enhances the strength of the sealing device 5. During operation, the emission voltage is applied between the cathode plate 70 and the anode plate 30, and the electrons are emitted from the electron φ emission terminal 50 and accelerated between the electron emission terminal 50 and the anode plate 30. Finally, the electrons are emitted by the fluorescent layer 40. Upon receiving, the fluorescent layer 40 emits light to realize display. The side wall 90, the front panel 10 and the rear panel 20 have the same thermal expansion coefficient, and the heat generated by the fluorescent layer 40 and changes in external temperature will not affect the seal between the side wall 90, the front panel i0, and the rear panel 20. , Can ensure the tightness and reliability of the sealing device 5. Side wall 0 Continued pages (Inventive explanation pages are insufficient, please note and use the continuation page) 8 1241617 90 Use strong pour _private gold and inner- and rear panel 20 to provide stronger soil to pay on the side wall 90, In addition to the top 10 of the front panel _, can be money ^^ _ device 5 _ amount. _ Supply is high. 4 Hao Na, and the death and reliability are improved. In summary, the present invention complies with the requirements of the invention patent, and a patent application is filed according to law. However, the above is only a preferred embodiment of the present invention. For example, those who are familiar with the skills of this case, equivalent modifications or changes made in accordance with the spirit of this case should be included in the scope of patent applications below.
99