1310577 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種光源，特別關於一種螢光燈。 【先前技術】 由於個人化電子產品日新月異’除了對於產品品質的 要求越來越高外，對於產品之功能要求及易於攜帶亦不例 外，當然，顯示器亦為電子產品中不可或缺的一項，故相 對的，對於所使用的顯示器則需要求具有輕薄短小且耗電 菫低之功效。就顯示器而言，液晶顯示器（Liquid crystal1310577 IX. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to a light source, and more particularly to a fluorescent lamp. [Prior Art] Since personalized electronic products are changing with each passing day, in addition to the increasingly high requirements for product quality, the functional requirements and easy portability of products are no exception. Of course, displays are also an indispensable item in electronic products. Therefore, the display used must be light, short, and low in power consumption. In terms of display, liquid crystal display (Liquid crystal
Display，LCD)以其耗電量低、發熱量少、重量輕、以及 非輻射性等等優點，早已被使用於各式各樣的電子產品 中’並且已逐漸地取代傳統的陰極射線管顯示器（c〇ld Cathode Tube Display, CRT Display) 〇 一般而言’液晶顯示器係主要包含一液晶面板、以及 一背光模組。其中’液晶面板係主要具有兩基板、以及一 夾設於兩基板間的液晶層；而背光模組係作為背光源使 用，其係可將來自一光源的光線均勻地分佈在液晶面板之 表面。 一般而言’液晶顯示器主要係以螢光燈（Fluorescent Lamp)作背光模組中之光源。其中，螢光燈又可分為冷陰 極螢光燈（Cold Cathode Fluorescent Lamp, CCFL)、以及 熱陰極螢光燈（Hot Cathode Fluorescent Lamp )。冷陰極榮 光燈係以冷陰極電極來代替會發熱之熱陰極電極（例如： 1310577 鶴絲）’由於冷陰極螢光燈可低溫啟動，再加上高效和長 哥之特點，故使得冷陰極螢光燈成為液晶面板主要之背光 源。 請參照圖1及圖2 ’習知之螢光燈1，係以一 螢光燈為例，係包含一玻璃管U、一内電極12以及一螢 光層13 (Phosphor Layer)。其中，玻璃管η内係充填有 水銀蒸氣（即汞蒸氣）及鈍氣（例如：氙、氬之混合氣體）， 作為放電；I夤（Discharge Medium ),而内電極12係具有 一導線121，並穿射玻璃管u，以接收外部輪入之一電流。 在此，係以使用二個内電極12並分別設置於玻璃管η内 之二端為例，而螢光層13則均勻塗佈於玻璃管丨丨之内壁。 當螢光燈1於點亮時，内電極12經由導線121輸入 電而釋出電子，當電子經電場加速碰撞玻璃管11内部 之放電介質時’則使得放電介質處於激態，然後釋出紫外 光以回到基態。其中，放電介質所釋放之紫外光(υν)則藉 由玻璃管11内部之螢光層13吸收，而釋放出可見光。 然而’由於製作勞光燈1之玻璃管1卜所使用之材質 為鈉㈣璃’或高錯玻璃’而其材質皆含有大量的鈉(Na)、， 燈1被點亮的過程時，玻璃管11中的鈉易與放 相互結合，而成為鈉汞合金（黑色)，並沉 使r㈣i 13中’造成營光層13變質，而產生黑化現象， ::螢13漸漸不能再與紫外光作用，也無法發出可 螢光产丨此^但造絲光燈1之發光效率降低，甚至使 且之辱〒變得更短，需時常更換新的登光燈卜 1310577 因此，如何提供一種可避免燈管黑化現象發生，並提 升使用率及壽命之螢光燈，實屬當前重要課題之一。 【發明内容】 有鑑於上述課題，本發明之目的為提供一種能夠避免 燈管黑化現象發生，並提升使用率及壽命之螢光燈。 緣是，為達上述目的，依本發明之螢光燈，包含一玻 璃管、一隔離層以及一内電極。本發明中，玻璃管係充填 一放電介質，而隔離層係環設於玻璃管之内壁，内電極係 設置於玻璃管内之一端部，並鄰設於隔離層。 承上所述，因依據本發明之一種螢光燈，係將一隔離 層環設於一玻璃管之内壁，且一内電極係設置於玻璃管之 一端部，並鄰設於隔離層。與習知技術相較，本發明之螢 光燈係藉由隔離層環設於玻璃管上，使隔離層不僅可避免 玻璃管中之鈉與玻璃管内充填之放電介質作用，而造成黑 化，更可吸收紫外光，並避免紫外光射出，以使螢光燈充 分利用紫外光，並作用產生可見光源，而達到提升螢光燈 之使用率及壽命之功效。 【實施方式】 以下將參照相關圖式，說明依本發明較佳實施例之一 種螢光燈。 請參照圖3所示，本發明較佳實施例之一種螢光燈2, 係包含一玻璃管21、一隔離層22以及一内電極23。本實 1310577 施例之螢光燈2並無限制，在此係以一冷陰極螢光燈（c〇id Cathode Fluorescent Lamp，CCFL)為例；而於應用上，亦 無限制’例如.照明裝置之光源或液晶顯示器中背光模組 之光源。 於本實施例中’玻璃管21係充填一放電介質，而放 電介質並無限制，於實施上，係為惰性氣體(例如：氬、氖）、 汞(Hg)、或其混合氣體，例如··惰性氣體及汞所混合之氣 體。 請同時參照圖3與圖4所示，本實施例之隔離層22， 係環設於玻璃管21之内壁，而隔離層22之設置方式並無 限制，在此係以一塗佈方式設置。於本實施例中，隔離層 22之材質並無限制，於實施上，係包含三氧化二釔(γ2〇3)， 其材質可避免玻璃管21⑽包含之成份，例如：納_ 與放電介質（例如：汞），相互作用，而造成黑化。故隔離 層22具有保護及避免玻璃管21黑化之功效。此外，隔離 層22之材質更可包含二氧化鈦(Ti〇2)、氧化鈽(Ce0)及氧 化辞(ZnO)至少其中之一’其材質可吸收紫外光，並避免 紫外光射出玻璃管2卜而形成抗紫外光層。於實施上，也 可將三氧化二紀同時與二氧化鈦、氧化飾及氧化辞混合， 以構成隔離層22。 於本實施例中，螢光燈2更包含—螢光層24，係設置 於隔離層22上，使隔離層22位於玻璃f 21及榮光層％ 之間，此外’由於螢光層24可用以吸收紫外光⑴v)並放 出可見光’故本實施例係彻隔離層22與料層％相配 1310577 管21内部之氣體離子轟擊外，更進而使螢光燈2之壽命 延長。 vp 綜上所述，因依據本發明之一種螢光燈，係將一隔離 層環設於一玻璃管之内壁，且一内電極係設置於玻璃管之 一端部，並鄰設於隔離層。與習知技術相較，本發明之螢 光燈係藉由隔離層環設於玻璃管上，使隔離層不^可避免 玻璃管中之鈉與玻璃管内充填之放電介質作用，而造成黑 化’更可吸收紫外光，並避免紫外光射出，以使螢光燈^ 刀利用兔外光’並作用產生可見光源，而達到提升榮光燈 之使用率及壽命之功效。另外，更可藉由包覆杯狀導體於 玻璃管之各端部，以避免内電極受到氣體離子之轟擊，進 而延長螢光燈之壽命。 U上所述僅為糊性，㈣為㈣性者。任何未脫離 本發明之精神與範脅，而對其進行之等效修改或變更，均 應包含於後附之申請專利範圍中。 【圖式簡單說明】 圖1係為習知之一種螢光燈之一示意圖； 圖2係為圖1沿A-A，直線之一剖視圖； ， 圖3為顯示依本發明㈣實施例之— ，意圖；以及 床兀^且之ί 圖4係為们沿㈣，直線之一剖視圖。 元件符號說明： 1310577 1、2 螢光燈 11 ' 21 玻璃管 12 ' 23 内電極 121 、 231 導線 13、24 螢光層 22 隔離層 25 杯狀導體 ，A-A’、B-B’ 線段Display, LCD) has long been used in a wide variety of electronic products due to its low power consumption, low heat generation, light weight, and non-radiation. It has gradually replaced the traditional cathode ray tube display. (c〇ld Cathode Tube Display, CRT Display) 〇 In general, the liquid crystal display system mainly includes a liquid crystal panel and a backlight module. The liquid crystal panel mainly has two substrates and a liquid crystal layer interposed between the two substrates; and the backlight module is used as a backlight to uniformly distribute light from a light source on the surface of the liquid crystal panel. In general, a liquid crystal display mainly uses a fluorescent lamp as a light source in a backlight module. Among them, the fluorescent lamp can be further divided into a Cold Cathode Fluorescent Lamp (CCFL) and a Hot Cathode Fluorescent Lamp. The cold cathode glory lamp replaces the hot cathode electrode that generates heat with a cold cathode electrode (for example: 1310577 crane wire). Because the cold cathode fluorescent lamp can be started at a low temperature, coupled with the characteristics of high efficiency and long brother, cold cathode fluorescent The light becomes the main backlight of the LCD panel. Referring to Figures 1 and 2, the conventional fluorescent lamp 1 is a fluorescent lamp, which comprises a glass tube U, an inner electrode 12 and a phosphor layer 13 (Phosphor Layer). Wherein, the glass tube η is filled with mercury vapor (ie, mercury vapor) and an inert gas (for example, a mixed gas of helium and argon) as a discharge; I夤 (Discharge Medium), and the internal electrode 12 has a wire 121, and The glass tube u is pierced to receive a current from the external wheel. Here, the two ends in which the two internal electrodes 12 are used and respectively disposed in the glass tube η are taken as an example, and the phosphor layer 13 is uniformly applied to the inner wall of the glass tube. When the fluorescent lamp 1 is lit, the internal electrode 12 inputs electricity via the wire 121 to release electrons, and when the electron accelerates against the discharge medium inside the glass tube 11 by the electric field, the discharge medium is in an excited state, and then the ultraviolet light is released. Light returns to the ground state. Among them, the ultraviolet light (υν) released from the discharge medium is absorbed by the fluorescent layer 13 inside the glass tube 11, and visible light is released. However, 'the material used in the glass tube 1 made of the work light 1 is sodium (four) glass 'or high-missed glass' and its material contains a large amount of sodium (Na), when the lamp 1 is lit, the glass The sodium in the tube 11 is easily combined with the release, and becomes a sodium amalgam (black), and sinks to cause the r(4)i 13 to cause the camping layer 13 to deteriorate, resulting in blackening, and the :13 can no longer be combined with ultraviolet light. The function is also unable to emit fluorescent light. However, the luminous efficiency of the silk lamp 1 is reduced, and even the insult becomes shorter. It is necessary to replace the new Dengguang 1310577. Therefore, how to provide a avoidable One of the current important issues is the occurrence of blackening of the lamp and the use of fluorescent lamps with increased usage and longevity. SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a fluorescent lamp which can avoid occurrence of blackening of a lamp and improve usage and life. For the above purpose, the fluorescent lamp according to the present invention comprises a glass tube, an isolating layer and an inner electrode. In the present invention, the glass tube is filled with a discharge medium, and the separation layer is disposed on the inner wall of the glass tube, and the inner electrode is disposed at one end of the glass tube and adjacent to the isolation layer. As described above, a fluorescent lamp according to the present invention has an isolation layer ring disposed on an inner wall of a glass tube, and an inner electrode is disposed at one end of the glass tube and adjacent to the isolation layer. Compared with the prior art, the fluorescent lamp of the present invention is disposed on the glass tube by the spacer layer, so that the isolation layer can not only avoid the action of the sodium in the glass tube and the discharge medium filled in the glass tube, but causes blackening. It can absorb ultraviolet light and avoid ultraviolet light emission, so that the fluorescent lamp can make full use of ultraviolet light and act to generate visible light source, thereby achieving the effect of improving the utilization rate and life of the fluorescent lamp. [Embodiment] Hereinafter, a fluorescent lamp according to a preferred embodiment of the present invention will be described with reference to the related drawings. Referring to FIG. 3, a fluorescent lamp 2 according to a preferred embodiment of the present invention comprises a glass tube 21, an isolation layer 22 and an internal electrode 23. There is no limitation on the fluorescent lamp 2 of the embodiment 1310577. In this case, a cold cathode fluorescent lamp (CCFL) is taken as an example; and in application, there is no limitation. For example, a lighting device The light source or the light source of the backlight module in the liquid crystal display. In the present embodiment, the glass tube 21 is filled with a discharge medium, and the discharge medium is not limited. In practice, it is an inert gas (for example, argon, helium), mercury (Hg), or a mixed gas thereof, for example. · A gas mixed with inert gas and mercury. Referring to FIG. 3 and FIG. 4 simultaneously, the spacer layer 22 of the present embodiment is provided on the inner wall of the glass tube 21, and the manner of disposing the spacer layer 22 is not limited, and is disposed in a coating manner. In the present embodiment, the material of the isolation layer 22 is not limited. In practice, the material includes tantalum trioxide (γ2〇3), and the material thereof can avoid the components contained in the glass tube 21 (10), for example, nano- and discharge medium ( For example: mercury), interaction, and blackening. Therefore, the spacer layer 22 has the effect of protecting and preventing the blackening of the glass tube 21. In addition, the material of the isolation layer 22 may further comprise at least one of titanium dioxide (Ti〇2), cerium oxide (Ce0) and oxidized (ZnO), which is capable of absorbing ultraviolet light and preventing ultraviolet light from being emitted from the glass tube. An anti-ultraviolet layer is formed. In practice, the Erbium may also be mixed with titanium dioxide, oxidized and oxidized to form the separator 22. In the present embodiment, the fluorescent lamp 2 further includes a phosphor layer 24 disposed on the isolation layer 22 such that the isolation layer 22 is located between the glass f 21 and the glory layer %, and furthermore, because the phosphor layer 24 is available The ultraviolet light (1) v) is absorbed and the visible light is emitted. Therefore, in this embodiment, the isolation layer 22 is matched with the material layer % to match the gas ion bombardment inside the 1310577 tube 21, and the life of the fluorescent lamp 2 is further extended. In summary, a fluorescent lamp according to the present invention has an isolation layer ring disposed on an inner wall of a glass tube, and an inner electrode is disposed at one end of the glass tube and adjacent to the isolation layer. Compared with the prior art, the fluorescent lamp of the present invention is disposed on the glass tube by the spacer layer, so that the isolation layer can avoid the action of the sodium in the glass tube and the discharge medium filled in the glass tube, thereby causing blackening. 'It can absorb ultraviolet light and avoid ultraviolet light emission, so that the fluorescent lamp can use the rabbit's external light' to generate visible light source, which can improve the utilization rate and life of the glory lamp. In addition, the cup electrode can be coated on each end of the glass tube to prevent the internal electrode from being bombarded by gas ions, thereby prolonging the life of the fluorescent lamp. U is only a paste, and (4) is a (four) sex. Any equivalent modifications or alterations of the present invention are intended to be included within the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing one of the conventional fluorescent lamps; FIG. 2 is a cross-sectional view taken along line AA of FIG. 1; FIG. 3 is a view showing an embodiment according to the fourth embodiment of the present invention; And the bed 兀 ^ and ί Figure 4 is a section along the line (4), one of the straight lines. Symbol description: 1310577 1, 2 fluorescent lamp 11 ' 21 glass tube 12 ' 23 inner electrode 121, 231 wire 13, 24 fluorescent layer 22 isolation layer 25 cup conductor, A-A', B-B' line segment