M306717 八、新型說明： 【新型所屬之技術領域】 本創作係關於一種氣體放電燈(gas discharge iampS)，特別是， 關於一種冷陰極螢光燈。 【先前技術】 從蠟燭、白熾燈(incandescentiamps)到氣體放電燈，照明技術 使人類脫離曰出而作日落而息的桎插，徹底改變人類的生活方式。 氣體放電燈放電發光的基本過程分3個階段：放電燈接上電 源後產生穩疋的自持放電(Seif_containecj Discharge)，由陰極發射的 電子被外電場加速，電能轉化為自由電子的動能；快速運動的電 ，與氣體原子碰撞，氣體原子被激發，自由電子的動能又轉化為 氣體原子的内能；受激氣體原子從激發態返回基態，將獲得的内 能以光輪射的形式釋放出來。上述過程重複進行，燈就持續發光。 放電燈的光她與電流密度的大小、氣體的麵及氣壓的高低有 鲁 關。一定種類的氣體原子只能輕射某些特定波長的光譜線。 “氣體放私燈1作時，若要維持放電電流，陰極必須不斷提供 電子’ 一般主要有以下形式。其一，熱電子發射(th_ai emiSS1〇n):陰極表面存在許多電子，但這些電子平常狀態下不能逸 Λ表面’但隨著陰極溫度升高會有越多的電賴得足夠能量克服 工力四數(work function)而從陰極逸出，熱電子發射是電弧放電最主 要Ϊ — 射方式’其中功函數為絕對零度之時，電子逸出所需 最】犯里，、—正肖隹子轟擊發射(p0sitive charged i〇ns c〇msi〇n π·):當陰極附近空間的電場夠大，正離子被此電場加速，轟 4WELLP006001TW-新型.doc •M306717 擊陰極表面，若正離子醜4A於功函數兩倍，將有—電子由阶 極逸出，另-電子被正離子吸收。其三，場致發射_如脱i 刪剛疆）：當施加陰極的電場夠鱗，將使陰極的位障降低， 而產生電子發射。其四，電子森擊發射（electr〇ns -ssion)·•若轟擊電極的電子具有足夠能量，亦能由電極擊出電子。 螢光燈(fluorescent lamps)為氣體放電燈的一種，且為現今最常 用賴明設備之-。$光燈又可分成㈣紐_ cath〇de • fluorescent lamp, t ^^(c〇ld cath〇de lamp，CCFL) ’ -般兩者主要的差別在於熱陰極榮光燈預先加熱， 以產生熱電子發射，例如熱陰極螢光燈兩端具有燈絲(filament); 而冷陰極f光胞彳;f需此加齡驟。參考圖丨，說明冷陰極榮光燈 =〇的發光原理。使燈管内填充汞原子106與惰性氣體114，當燈 官於電極102加上電場後，造成電極1〇2產生電子1〇4釋放，釋 放之電子104與内部之汞原子應產生撞擊，被激起的汞原子繼 由不女疋之狀怨，又迅速地返回安定之狀態，剩餘的能量便以紫 外線108(主要波長為253.7nm與185nm)之形式被釋放出來。螢光 春 劑112因吸收這個波長之紫外線，將紫外線108之能量變換為可 見光116而造成發光。尤其近年來，液晶顯示器(Liquid crystd di印lay, LCD)背光模組的應用大幅成長，例如筆記型電腦顯示面 板、LCD監視器以及LCD電視等，而冷陰極螢光燈即是lcd顯 示器中提供光源的主要元件之一。 冷陰極螢光燈管具有高亮度與壽命長的特性，不但可以提供 液晶顯示器的背光源和掃描器的光源，也可作為各類薄型廣告的 如明光箱’鲁療用X光看片機，指示看板，及藝術照明使用。另 4WELLPO〇6〇〇1TW-新型.doc M3 06717 方面冷陰極螢光燈官具有其他之特性，例如可搭配導光板來 使用、、安定、色輝度均勻、耐震耐衝擊、具調光性、财點滅、以 及低消耗功率。再者，冷陰極螢光燈管之管徑、管長、以及色輝 度均可依需求而進行設計製造。 i體放電依氣體壓力、施加賴、電極雜、電賴率的不 同’而有多種多樣的形式，習知的技術係利用杯狀(cup)電極或w 棒(Wrod)電極來增加自由電子發射，減少啟動電壓。 【新型内容】 ^創作之一方面在於提供一種冷陰極螢光燈，供接收來自一 驅動單元產生的一電場，這冷陰極螢光燈包含：一燈管；一螢光 劑(flu〇rescence)，塗抹於此燈管之内壁；汞(mercury)及惰性氣體， 封入该燈官之中；以及一陣列(aiTay)式陰極電極；其中驅動單元所 產生的電場被施予此冷陰極螢光燈，且此冷陰極螢光燈利用陣列 式陰極電極來增加釋放的自由電子數量。 籲 【實施方式】 本創作揭露一種冷陰極螢光燈。為了使本創作之敘述更加詳 盡與完備，可參照下列描述並配合圖2至圖3之圖式。 參考圖2，其為本創作之一實施例。本創作提供一種冷陰極螢 光燈200。這冷陰極螢光燈2〇〇包含一燈管21〇、一螢光劑212， 其被塗抹於燈管210之内壁、汞原子206、惰性氣體214、一陣列 式陰極黾極202，以及自由電子204。一驅動單元218產生一電場 施予陰極電極202，使陣歹I]式陰極電極202逸出自由電子204，自 4WELLP006001TW-新型.d〇c M306717 由電子204被電場加速，並與汞原？ 2〇6發生非完全彈性碰撞， 使汞原子206外層的價電子由低能階躍升到高能階，最後以光子 的形式轄射’並由高能階返回低能階。冷陰極榮光燈2〇〇之陰極 電極202被排列成陣列形式，可增加該陰極電極2〇2所釋放的自 由电子204數里，自由電子2〇4越多表示碰撞汞原子的機率 越大’因此可進-步降低冷陰極營光燈2〇〇之啟動電壓。 於-些具體實施例巾’驅鱗元218產生交流電場 ’配合陣 • 列式電極2〇2改變電場之電壓及操作頻率更能有效地引發電弧放 ，現象’使燈管210内的自由電子2〇4數量更增加。需要注意的 疋，電弧放電現象將伴隨高熱產生，使陰極變熱，且於另一些具 體實施例中’驅動單元218產生的電場係直流電場。 一’、 .於另外的具體實施例中’燈管21()為玻璃製成，例如棚砂玻 璃(b_ilicate細）、鈉触璃(她—，而較佳為爛砂玻 帛。值^提的疋’本創作之冷陰極螢統可朗於各種背光模 組中’燈管210之管徑大小和管長之選擇性並無限制，若用途例 # 如為液晶電視，則其管長可為218.6mm〜1500mm，管外徑可為 〜4mm;若為顯示器所用，則其管長可為225 2咖〜娜·， 官物可為2mm〜2.6mm。另一方面’燈管21〇之形狀也有許多選 擇性，例如：一形、L形、门形、或xj型等。 參考圖3,陣列式陰極電極2〇2(圖2)中之每一電極的頂端可為 义端形式，以促進每-電極之尖端放電現象。且於一些具體實施 扣……E(m，g}等更排列成上下交錯形式，如此能更有效益地 4WELLP006001TW-新型.doc M306717 ==面，空間。需要注意的是圖3只是一例舉性質的 式陰極=極’任何其他形狀之陣列式電極都可制於本創 例如配β冷陰極螢光燈200外形排列成圓形。 作之申4= 例而已，並非用以限定本創 之等效改魏修飾，均脱含在下叙_職=。下所凡成 【圖式簡單說明】 圖1說明習知的冷陰極螢光燈發光原理； 以及 圖2說明-種根據本創作之一具體實施例的冷陰極榮光燈； 圖3描缘陣列式陰極電極 【主要元件符號說明】 100, 200冷陰極螢光燈 102陰極電極 202陣列式陰極電極 104, 204自由電子 106,206汞原子 108, 208紫外線 110, 210 燈管 112,212螢光劑 114, 214惰性氣體 116, 216可見光 218驅動單元 4WELLP006001TW-新型.doc M306717 (m，g)陰極電極 E(1,1)5 E(ij2)? E(i?n)? E(2ji), E(2,2), E(25p)? E(m?1)? E(m?2)5M306717 VIII. New Description: [New Technology Field] This paper is about a gas discharge iampS, especially a cold cathode fluorescent lamp. [Prior Art] From candles, incandescent lamps (ampandescentiamps) to gas discharge lamps, lighting technology has enabled humans to break away from the shackles and make sunsets, completely changing the way people live. The basic process of discharge and discharge of gas discharge lamps is divided into three stages: the discharge lamp is connected to the power supply to generate a stable self-sustaining discharge (Seif_containecj Discharge), and the electrons emitted by the cathode are accelerated by the external electric field, and the electric energy is converted into the kinetic energy of free electrons; The electricity collides with the gas atoms, the gas atoms are excited, and the kinetic energy of the free electrons is converted into the internal energy of the gas atoms; the excited gas atoms return to the ground state from the excited state, and the internal energy obtained is released in the form of light. The above process is repeated and the lamp continues to emit light. The light of the discharge lamp is closely related to the magnitude of the current density, the surface of the gas and the pressure of the gas. Certain types of gas atoms can only illuminate the spectral lines of certain wavelengths. "When the gas smuggling lamp 1 is used, if the discharge current is to be maintained, the cathode must continuously supply electrons." Generally, the following forms are mainly used. First, thermionic emission (th_ai emiSS1〇n): there are many electrons on the surface of the cathode, but these electrons are common. In the state, the surface cannot be escaped. But as the cathode temperature rises, the more electricity is available, the energy is sufficient to overcome the work function and escape from the cathode. The thermal electron emission is the main cause of arc discharge. In the way 'where the work function is absolute zero, the electrons need to escape most, —— 正 隹 隹 轰 轰 轰 ( ( ( ( : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : Large enough, positive ions are accelerated by this electric field, blast 4WELLP006001TW-new.doc •M306717 hit the cathode surface, if the positive ion ugly 4A is twice the work function, there will be - electrons escape from the step, and the other - electrons are absorbed by the positive ions Third, field emission _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ )··If bombardment The pole electrons have enough energy and can also be used to strike electrons from the electrodes. Fluorescent lamps are a kind of gas discharge lamps, and are the most commonly used devices in the world today. The light can be divided into four (4) New_cath 〇de • fluorescent lamp, t ^^(c〇ld cath〇de lamp,CCFL) ' The main difference between the two is that the hot cathode glory lamp is preheated to generate hot electron emission, such as hot cathode fluorescent lamps There is a filament; and the cold cathode f photocell; f requires this ageing step. Referring to the figure 丨, the principle of the cold cathode glory = 〇 light is emitted. The lamp tube is filled with mercury atom 106 and inert gas 114, when After the lamp officer applies an electric field to the electrode 102, the electrons 1〇4 are generated by the electrode 1〇2, and the released electrons 104 and the internal mercury atoms should collide, and the excited mercury atoms are followed by the blasphemy. It quickly returns to a stable state, and the remaining energy is released in the form of ultraviolet light 108 (the main wavelength is 253.7 nm and 185 nm). Fluorescent spring 112 absorbs the ultraviolet light of this wavelength and converts the energy of ultraviolet light 108 into visible light 116. And cause luminescence. In recent years, the application of liquid crystal display (LCD) backlight modules has grown dramatically, such as notebook computer display panels, LCD monitors, and LCD TVs, while cold cathode fluorescent lamps are provided in lcd displays. One of the main components of the light source. The cold cathode fluorescent tube has the characteristics of high brightness and long life, not only can provide the backlight of the liquid crystal display and the light source of the scanner, but also can be used as a variety of thin advertisements such as the light box. Use X-ray to watch the tablet, indicate the kanban, and use the art lighting. Another 4WELLPO〇6〇〇1TW-New.doc M3 06717 aspect cold cathode fluorescent lamp official has other characteristics, such as can be used with light guide plate, stability, uniform color, shock and shock resistance, dimming, wealth Click off, and low power consumption. Furthermore, the tube diameter, tube length, and color luminance of the cold cathode fluorescent lamp can be designed and manufactured according to requirements. The i-body discharge has various forms depending on the gas pressure, the application pressure, the electrode miscellaneous, and the electric latitude. The conventional technique uses a cup electrode or a wrod electrode to increase the free electron emission. , reduce the starting voltage. [New content] ^ One aspect of the creation is to provide a cold cathode fluorescent lamp for receiving an electric field generated from a driving unit, the cold cathode fluorescent lamp comprising: a lamp; a flu〇rescence Applying to the inner wall of the tube; mercury and inert gas enclosed in the lamp; and an array of (aiTay) cathode electrodes; wherein the electric field generated by the driving unit is applied to the cold cathode fluorescent lamp And this cold cathode fluorescent lamp utilizes an array of cathode electrodes to increase the amount of free electrons released. [An embodiment] The present invention discloses a cold cathode fluorescent lamp. In order to make the narrative of this creation more detailed and complete, refer to the following description and cooperate with the diagrams of Figures 2 to 3. Referring to Figure 2, it is an embodiment of the present invention. This creation provides a cold cathode fluorescent lamp 200. The cold cathode fluorescent lamp 2A includes a tube 21〇, a phosphor 212, which is applied to the inner wall of the tube 210, the mercury atom 206, the inert gas 214, an array cathode bungee 202, and the free Electronics 204. A driving unit 218 generates an electric field to apply the cathode electrode 202 so that the cathode electrode 202 of the array I] escapes from the free electron 204, from the 4WELLP006001TW-new type .d〇c M306717 by the electron 204 being accelerated by the electric field, and with the mercury source? 2非6 incomplete elastic collision, the valence electrons of the outer layer of mercury atom 206 jump from low energy level to high energy level, and finally ruling in the form of photons and returning to low energy level by high energy level. The cathode electrodes 202 of the cold cathode glory lamp 2 are arranged in an array form, and the number of free electrons 204 released by the cathode electrode 2〇2 can be increased. The more free electrons 2〇4, the greater the probability of colliding with mercury atoms. Therefore, the starting voltage of the cold cathode camping lamp can be further reduced. In some embodiments, the towel 'driver element 218 generates an alternating electric field' to cooperate with the array electrode 2 〇 2 to change the voltage of the electric field and the operating frequency to more effectively induce the arc discharge, the phenomenon 'making the free electrons in the tube 210 The number of 2〇4 is even more increased. It should be noted that the arcing phenomenon will be accompanied by high heat generation to heat the cathode, and in other specific embodiments the electric field generated by the drive unit 218 is a DC electric field. In another embodiment, the 'light tube 21' is made of glass, such as shed glass (b_ilicate fine), sodium touch glass (she-, and preferably rotten sand glass). The cold cathode ray system of the present invention can be used in various backlight modules. The diameter of the tube 210 and the selectivity of the tube length are not limited. If the use example # is an LCD TV, the tube length can be 218.6. Mm~1500mm, the outer diameter of the tube can be ~4mm; if it is used for the display, the length of the tube can be 225 2 coffee ~ Na ·, the official object can be 2mm ~ 2.6mm. On the other hand, the shape of the tube 21〇 is also many Selectivity, for example: one shape, L shape, gate shape, or xj type, etc. Referring to Fig. 3, the top end of each electrode of the array type cathode electrode 2〇2 (Fig. 2) may be in the form of a sense end to promote each - The tip discharge phenomenon of the electrode. And in some specific implementations... E(m, g}, etc. are arranged in an upper and lower staggered form, so that it can be more effective 4WELLP006001TW-new type.doc M306717 == face, space. Need attention It is FIG. 3 that is merely an example of a cathode of the nature of the cathode. Any other array of electrodes can be fabricated in the present invention. The shape of the β-cold cathode fluorescent lamp 200 is arranged in a circular shape. The application of the 4th example is not limited to the equivalent modification of the original modification, and is excluded from the following description. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates a conventional cold cathode fluorescent lamp illumination principle; and FIG. 2 illustrates a cold cathode glory lamp according to an embodiment of the present invention; FIG. 3 depicts a trace array cathode electrode [main component symbol Description] 100, 200 cold cathode fluorescent lamp 102 cathode electrode 202 array cathode electrode 104, 204 free electron 106, 206 mercury atom 108, 208 ultraviolet 110, 210 lamp 112, 212 fluorescent agent 114, 214 inert gas 116, 216 visible light 218 drive Unit 4WELLP006001TW-New.doc M306717 (m, g) Cathode Electrode E(1,1)5 E(ij2)? E(i?n)? E(2ji), E(2,2), E(25p)? E(m?1)? E(m?2)5
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