1295395 九、發明說明·· 【發明所屬之技術領域】 本發明係關於一種背光模組及其燈管啟動方法，特 別疋關於一種高效能的背光模組及其燈管啟動方法。 【先前技術】 冷陰極螢光燈管（Cold Cathode Fluorescent Lamp，CCFL)因其發光強度高、發光均勻、燈管可以做的 極、、、田且可製成各種形狀，故目前在液晶顯示器、掃描器、 汽車儀表盤、微型廣告燈箱和鏡框製作等領域中大量應 用’作為上述產品的背景光源。 〜 冷陰極螢光燈管之發光原理敘述如下··給予燈管高 電$時，燈管電極射出電子，由電極衝出的電子受電場 的’IV響而運動，因而獲得動能。當這些擁有相當動能的 高速電子與管内水銀撞擊時，此狀態下之水銀分子瞬間 釋出所增得的能量，由不安定之狀態急速返回原來之安 定狀態，此時放出的能量即以紫外線放射出。此紫外線 激發内管壁塗佈之螢光體，螢光體中的電子蓄存能量後 瞬間又將其釋出，同時放出波長較長 之^視光。 而，著液晶顯示器的日漸普及，為了因應大尺寸化 的,、、、員示舄求，燈管的長度曰漸增長。然而，隨著燈管 的長度日漸增長，其所需的啟動電壓也相對的提高，且 並聯，燈5之間’其阻抗特性也會有更大的差異，造成 變壓恭的設計更加困難，且提高成本。 、目刚克服燈管啟動電壓過高及阻抗差異過大的方 弋有兩種其係提升變壓器（inverter)的電壓，以克 1295395 服燈管啟動電壓過高。然目前變壓器在設計上針對啟動 電f的部分都〒達-千伏特以上’若隨著啟動電壓不斷 提高’將變壓器的電Μ不斷地提升，會造成製作上成本 大量增加與產品可靠度下降的問題。因為啟動 高，變壓器越難製作’不但變壓器的繞線比增加，材料 的耐尚壓性也必須增加，否則變壓器容易因絕緣性不佳 造成跳火等現象’導致變壓n燒毀。另外，由於不同的 燈官其阻抗會有些微差異，在同時點亮多個燈管時，此 差異會造成無法同時點亮所有燈管的問題。 其二係在燈管的内壁上或電極上塗佈如絶等物 質’但是’由於錄等物質屬有毒物質，—旦燈管故障廢 J塑塗：：燈管内壁上的鉋等物質會對於環境造成極乂 影響’因此’此種方式^僅造成環境 增添一塗佈的步驟，更加鉍孴工栌杏； 71 乂娜文加耗費工枯，實非一理想解決方 案0 【發明内容】 因此」為解決上述問題，本發明係提出一種背光模 啟動方法’可有效降低啟動電壓，減少變壓 :::::: 果省成本支出’且不需使用絶等有毒物質， i立丨 & g刀別具有一阻抗，光產生哭 其，’光能促使燈管内之部分電子‘ 此阻抗之一啟動電屢即可啟動燈管。燈 η糸與-雜拉組電性連接，藉由調控模組控制轉換後 1295395 二出電壓予燈管。調控模組包括變 麗器可轉換一來自外部 市路，變 盘變遷哭雷m '原電[後輸出’而控制迴路 二制變壓器輸出之電壓大小。户 ; = ; =光燈管、冷陰極勞光燈管、冷陰“ 式ΐΐ二t!汞螢光燈管，且燈管之間係以並聯方 ^ H 產生器係為一發光二極體（Light Emitting i〇de，LED)、有機發光二極體（〇rganic Ught ^i〇de ’ OLED)、雷射（laser)或小型 i = 置電性連接，控制裝置⑽ 二模組係 根據本發明的再一目的，提出一種燈管啟動方 列步驟：（a)提供—f光模組，包括至少—燈管與 部⑻光產生器產生一光能；（c)使燈管内之 ^刀電子游離；⑷輸人小於燈管阻抗之-啟動電壓；以 ⑷啟動燈管。燈管係為外置電極螢光燈管、冷陰極螢 j燈官、冷陰極平㈣光燈管或自*汞螢紐管，且燈 ΐ之rm聯方式配置。光產生器係為一發光二極 .毛光一極體、雷射或一小型的氣體放電燈。光 =係與-控制裝置電性連接，控制裝置可控制光產 叫益，生総之大小。f光模組係應用於顯示器、掃描 為、ά車儀表盤或廣告燈箱。 為讓本發明之上述和其他目的、特徵、和優點能更 明f易懂，下文特舉-較佳實施例，並配合所附圖式， 作詳細說明如下： 1295395 【實施方式】 請參照第1圖，其繪示乃本發明之背光模組之示意 圖。本發明較佳實施例所揭露之背光模組（backlight module)10，包括至少一燈管12、調控模組14與光產生 器16。多個燈管12係冷陰極螢光燈管（Cold Cath〇de Fluorescent Lamp，CCFL)，以並聯方式配置，且與調控 模組14電性連接。調控模組14包括一變壓器與一控制 迴路，變壓器可轉換一來自外部電源之電壓後輸出啟動 電壓予燈管12，而控制迴路與變壓器電性連接，可控制 變壓為輸出之電壓大小。如此一來，由外部輸入的電壓， 例如是一市電（AC)便可經過調控模組14的控制轉換後 輸出燈管12可用的電壓，例如是一直流電（pc)。 母個燈管12分別具有一阻抗，必需先克服燈管j 2 的阻抗後，才能使氣體放電後驅動燈管12。隨著所製作 的燈管長度的不同，啟動電壓與操作電壓隨之改變。含主 參照第2A圖與第2B圖，第2A圖繪示乃燈管長度與啟g 電壓的關係圖，而第2B圖繪示乃燈管長度與操作電壓的 關係圖。在相同的燈管長度下，啟動電壓的值皆大於操 作電壓。如第2A圖所示，隨著所製作的燈管長度的^ 長，啟動電壓隨之增大。如第2B圖所示，隨著所製作= 燈管長度的增長，操作電壓隨之增大。 光產生器16可產生一光能，在燈管12啟動前， 能促使燈管12内之部分電子先游離，故只要輸入小 本阻抗之二啟動電壓值即可啟動燈管12。請參照第「 圖，其繪示乃應用本發明後，燈管長度與啟動電壓 係圖。如第2C圖所示’隨著所製作的燈管長度的增長’ 1295395 啟動電壓隨之增大。然與第2A圖相較後可明顯發現，在 相同燈管長度的情況下，例如是350毫米（mm)的燈管長 度下，原本的燈管12需約lOOOVrms以上的電壓才得以 啟動，而在增加一光產生器16，有光源提供的輔助下， 僅需約800Vrms的電壓即可啟動燈管12。 光產生為16係自發光性，例如是一發光二極體 (Light Emitting Diode，LED)或有機發光二極體 (Organic Light Emitting Diode，0LED)。或者，光產 生杰16可以是雷射（iaser)或一小型的氣體放電燈，利 用輸入一外部電壓以產生光能。另外，光產生器16 一控制裝置18電性連接，如此一來，可藉由控制裝置 18來調整光產生器16所產生光能之大小，以控 12内電子游離的程度。 一至於燈管的啟動方法，包括下列步驟：⑷提供背 光模組ίο,包括至少一燈管12與光產生器l6，·（b)光產 ίη:16產能；(C)使燈管12内之部分電子游離； ()輸入小於燈管阻抗之一啟動電壓；以及⑷啟動燈管 严與it^在t" 1 12啟動之前’先行提供—光能以激發 Γ=12的阻抗，達到啟動燈管12=: 不需要如習知不斷提升變壓器的電壓以克 SIC::需使用絶等有毒物質塗佈在燈管的 能夠有效降低啟動電屢，減 之材枓浪費，節省成本支出，且兼顧環保的效 1295395 綜上所述，上述實施例中之背光模組10係可應用 於各種需背光源的電子裝置中，例如是顯示器、掃描器、 汽車儀表盤或廣告燈箱等。然而，本發明所揭露之燈管 啟動方法，並不只限定於冷陰極螢光燈管，其他種的氣 體放電燈亦可適用於本發明，例如是外置電極螢光燈管 (External Electrode Fluorescent Lamp，EEFL)、冷陰 極平板榮光燈管（Cold Cathode Flat Fluorescent Lamp ’ CCFFL)、自由汞螢光燈管（Hg-free Fluorescent Lamp)等。 雖然本發明已以一較佳實施例揭露如上，然其並非 用以限定本發明，任何熟習此技藝者，在不脫離本發明 之精神和範圍内，當可作各種之更動與潤飾，因此本發 明之保護範圍當視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 第1圖繪示乃本發明之背光模組之示意圖。 第2 A圖繪示乃燈管長度與啟動電壓的關係圖。 第2B圖繪示乃燈管長度與操作電壓的關係圖。 第2C圖繪示乃應用本發明後，燈管長度與啟動電 壓的關係圖。 【主要元件符號說明】 1〇 :背光模組 12 :燈管 14 :調控模組 16 :光產生器 18 :控制裝置BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backlight module and a lamp tube starting method thereof, and more particularly to a high performance backlight module and a lamp starting method thereof. [Prior Art] Cold Cathode Fluorescent Lamp (CCFL) is currently in liquid crystal display due to its high luminous intensity, uniform illumination, poles that can be made, and fields. A large number of applications in the fields of scanners, car dashboards, micro advertising light boxes and frame production are used as background light sources for these products. ~ The principle of the illumination of the cold cathode fluorescent lamp is as follows: · When the lamp is given a high power of $, the lamp electrode emits electrons, and the electrons emitted by the electrode are moved by the 'IV' of the electric field, thereby obtaining kinetic energy. When these high-speed electrons with considerable kinetic energy collide with the mercury in the tube, the mercury molecules in this state instantaneously release the increased energy, and the unstable state returns to the original stable state rapidly, and the energy released at this time is emitted by ultraviolet rays. . The ultraviolet light excites the phosphor coated on the inner tube wall, and the electrons in the phosphor accumulate energy and then release it at the same time, and emit a longer wavelength of the light. However, with the increasing popularity of liquid crystal displays, the length of the lamps has been increasing in response to the demand for large-scale, and pleading. However, as the length of the lamp increases, the required starting voltage is relatively increased, and in parallel, the impedance characteristics of the lamp 5 will be more different, which makes the design of the transformer more difficult. And increase costs. However, there are two types of voltages that increase the voltage of the transformer, and the starting voltage of the lamp is too high. However, at present, the transformer is designed to start the part of the electric power f--thousands of volts or more. [If the starting voltage is continuously increased, the power of the transformer will be continuously increased, which will cause a large increase in production cost and a decrease in product reliability. problem. Because the start-up is high, the transformer is more difficult to manufacture. Not only does the winding ratio of the transformer increase, but the resistance of the material must also increase. Otherwise, the transformer is prone to flashover due to poor insulation, which causes the transformer n to burn. In addition, since the impedance of the lamp is slightly different, when the multiple lamps are illuminated at the same time, this difference may cause the problem that all the lamps cannot be illuminated at the same time. The second is coated on the inner wall of the tube or on the electrode, such as a material such as 'but' because the recorded substance is a toxic substance, and the lamp tube is broken. J plastic coating:: The planing material on the inner wall of the tube will be The environment has a very strong impact 'so the way ^ only causes the environment to add a coating step, more complete apricots; 71 乂 Na Wenjia cost a lot of work, is not an ideal solution 0 [Summary] In order to solve the above problems, the present invention proposes a backlight mode starting method that can effectively reduce the starting voltage and reduce the voltage transformation:::::: If the cost is saved, and no need to use the toxic substances, i 丨 & The g-knife has an impedance, and the light produces a crying. 'Light can cause some of the electrons in the lamp'. One of the impedances can be activated to start the lamp. The lamp η糸 is electrically connected to the hybrid group, and the voltage is output to the lamp through the control module after the conversion of 1295395. The control module includes an inverter that can convert a voltage from the external market, the change of the disk, and the voltage of the output of the control circuit. Household; = ; = light tube, cold cathode light tube, cold cathode "type t two t! mercury fluorescent tube, and the tube is connected in parallel with the H ^ generator system as a light-emitting diode (Light Emitting i〇de, LED), organic light-emitting diode (〇rganic Ught ^ i〇de ' OLED), laser (laser) or small i = electrically connected, control device (10) A further object of the invention is to provide a lamp starting step: (a) providing a -f optical module, comprising at least - a lamp and a portion (8) of the light generator to generate a light energy; (c) a lamp inside the lamp; The knife electron is free; (4) the input voltage is less than the lamp impedance - the starting voltage; (4) the lamp is activated. The lamp tube is an external electrode fluorescent tube, a cold cathode fluorescent lamp, a cold cathode flat (four) light tube or * Mercury fluorescing tube, and the lamp ΐ is connected in rm mode. The light generator is a light-emitting diode. A light-emitting body, a laser or a small gas discharge lamp. The light=system is electrically connected to the control device. The control device can control the light production and the size of the oyster. The optical module is applied to the display, the scanning, the dashboard or the advertising light box. The above and other objects, features, and advantages of the present invention will become more apparent and understood by the appended claims <RTIgt; The backlight module 10 of the preferred embodiment of the present invention includes at least one lamp tube 12, a regulating module 14 and a light generator 16. The plurality of tubes 12 are Cold Cath〇 Fluorescent Lamps (CCFLs), which are arranged in parallel and are electrically connected to the control module 14. The control module 14 includes a transformer and a control loop. The transformer can convert a voltage from an external power source and output a starting voltage to the lamp 12, and the control circuit is electrically connected to the transformer to control the voltage to be converted into an output voltage. Thus, the externally input voltage is, for example, a The mains (AC) can be outputted by the control module 14 to output the voltage available to the lamp 12, for example, a constant current (pc). The female tubes 12 each have an impedance and must first overcome the tube j 2 After the resistance, the gas can be driven to drive the lamp 12. After the length of the lamp is made, the starting voltage and the operating voltage are changed. The main reference is shown in Figures 2A and 2B, and Figure 2A shows Figure 2B shows the relationship between the length of the lamp and the operating voltage. In the same lamp length, the starting voltage is greater than the operating voltage. Figure 2A It is shown that the starting voltage increases with the length of the fabricated lamp. As shown in Fig. 2B, as the length of the lamp is increased, the operating voltage increases. The light generator 16 can generate a light energy, which can cause some of the electrons in the lamp tube 12 to be free before the lamp tube 12 is started. Therefore, the lamp tube 12 can be activated by inputting a small starting voltage value of the small impedance. Please refer to the figure, which shows the length of the lamp and the starting voltage after applying the invention. As shown in Fig. 2C, 'the length of the lamp is increased'. However, compared with Figure 2A, it can be clearly found that in the case of the same lamp length, for example, a lamp length of 350 mm (mm), the original lamp 12 needs to be activated at a voltage of about 100 OVrms or more. With the addition of a light generator 16, with the aid of a light source, the lamp 12 can be activated with a voltage of only about 800 Vrms. The light is generated as a 16-series self-illumination, such as a Light Emitting Diode (LED). Or an Organic Light Emitting Diode (OLED). Alternatively, the Light Emitting 16 can be an iaser or a small gas discharge lamp that uses an external voltage to generate light energy. The generator 16 is electrically connected to the control device 18. In this way, the size of the light energy generated by the light generator 16 can be adjusted by the control device 18 to control the degree of electron detachment in 12. The method for starting the lamp is as follows. Including the following Step: (4) providing a backlight module ίο, including at least one tube 12 and a light generator l6, (b) light production: 16 capacity; (C) freeing some of the electrons in the tube 12; () input is less than the light One of the tube impedances starts the voltage; and (4) activates the lamp with strict and it^ before the t" 1 12 start-up - the light energy to excite the impedance of Γ=12, to reach the start lamp 12=: no need to continue Increase the voltage of the transformer to SIC:: It is necessary to use the toxic substances to be coated on the lamp tube, which can effectively reduce the start-up power, reduce the material waste, save the cost, and take into account the environmental protection effect. 1295395 The backlight module 10 in the embodiment can be applied to various electronic devices that require backlights, such as a display, a scanner, a car dashboard, an advertising light box, etc. However, the lamp tube starting method disclosed in the present invention is not only Limited to cold cathode fluorescent lamps, other types of gas discharge lamps can also be applied to the present invention, such as External Electrode Fluorescent Lamp (EEFL), Cold Cathode Flat Glare Tube (Cold Cathode Flat) Fluore Scent Lamp 'CCFFL), Hg-free Fluorescent Lamp, etc. Although the present invention has been disclosed above in a preferred embodiment, it is not intended to limit the invention, and anyone skilled in the art The scope of the present invention is defined by the scope of the appended claims, unless otherwise claimed. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a backlight module of the present invention. Figure 2A shows the relationship between the length of the lamp and the starting voltage. Figure 2B shows the relationship between the length of the lamp and the operating voltage. Fig. 2C is a diagram showing the relationship between the length of the lamp and the starting voltage after the application of the present invention. [Main component symbol description] 1〇: backlight module 12: lamp tube 14: regulation module 16: light generator 18: control device