1297900 九、發明說明： 【發明所屬之技術領域】 本發明提供一種驅動多燈管之變壓器結構，尤指一種 能驅動多燈管並使電流平均流通複數燈管， 複數燈管的平均亮度。 ^升正體a 【先前技術】 資訊類產品諸如。夜晶顯示器、掃描器以及影印機等 設備，都需要運用燈管來加以照日月，例如：冷陰極燈管或 熱=極燈管，隨著科技的進步對於提升整體燈管的亮度以 及免度均勻成為一種趨勢。目前習知雙燈管驅動系統可分 為：（1)請參考第1圖，一直流電源VIN電連接一驅動電路 11，該，動電路U電連接一變壓器T1之一次側線圈端卜 2。接著，經由該變壓器之二次側線圈端3、4輸出電壓， 其中該變壓器之二次側線圈# 3接地，而二次側線圈端4 電連接雙冷陰極燈管CCFU、CCFL2之電容n、C2。最後， 燈管CCFL1另一端接地，而燈管CCFL2則連接至一脈衝寬 度調變（Pulse Width Modulation，PWM)控制電路 13(簡稱 PWM控制電路），用以反饋回該驅動電路丨丨。因此，該p懸 控制電路13及依據冷陰極燈管CCFL2的輸出來控制&^^脈 波的輸出’作為迴授控制的依據，如此即可驅動兩燈管系 統’·（2)請參考第2圖，其與第1圖的電路配置完全相同， 唯一的差異性為冷陰極燈管CCFL1的另一端不接地，而電 接至該PWM控制電路13，如此一來，整體電路的迴授控制 是由雙冷陰極燈管CCFL1、CCFL2共同達到。然而上述二者 雙燈管驅動系統之雙冷陰極燈管CCFL1、CCFL2不容易達到 每根燈管電流一致，使得整體亮度平均。 此外’習知雙燈管驅動系統技術所採用 可為德參考第3圖，其中電路架構與第構； 1297900 之變壓器 管數目越 越多，而 器去推動 他元件如 平衡獨立 均勻之目 數目’而 貴0 去推動 多，則 造成逆 獨立之 平衡變 燈管所 的，而 所增加 獨立之燈管。所以當背光 逆受為（Inverter)所需 變為之成本昂貴。如果不 燈管，則需要每根獨立之 壓器、平衡電容以及平衡 流過之電流能夠相同，而 此方法雖然可以降低逆變 之電流平衡元件，亦會造 (backlight )燈 之變壓器數目也 使用獨立之變壓 燈管處，增加其 電感…等，用以 達到整體之亮度 器所需之變壓器 成逆變器成本昂1297900 IX. Description of the Invention: [Technical Field] The present invention provides a transformer structure for driving a plurality of lamps, in particular, an average brightness capable of driving a plurality of lamps and allowing current to flow through a plurality of lamps and a plurality of lamps. ^升正体 a [Prior Art] Information products such as. Night crystal displays, scanners, photocopiers, etc., all need to use lamps to take photos of the sun and the moon, such as: cold cathode lamps or hot = pole lamps, with the advancement of technology to improve the brightness and avoidance of the overall tube Uniformity becomes a trend. At present, the conventional dual lamp driving system can be divided into: (1) Please refer to FIG. 1 , the continuous current power supply VIN is electrically connected to a driving circuit 11, and the dynamic circuit U is electrically connected to the primary side coil end of the transformer T1. Then, the voltage is outputted through the secondary side coil ends 3, 4 of the transformer, wherein the secondary side coil #3 of the transformer is grounded, and the secondary side coil end 4 is electrically connected to the capacitance of the double cold cathode lamp CCFU, CCFL2, C2. Finally, the other end of the lamp CCFL1 is grounded, and the lamp CCFL2 is connected to a Pulse Width Modulation (PWM) control circuit 13 (referred to as a PWM control circuit) for feedback back to the drive circuit. Therefore, the p-suspension control circuit 13 and the output of the pulse wave according to the output of the cold cathode lamp CCFL2 are controlled as the basis of the feedback control, so that the two lamp system can be driven. (2) Please refer to 2, which is identical to the circuit configuration of FIG. 1, the only difference is that the other end of the cold cathode lamp CCFL1 is not grounded, but is electrically connected to the PWM control circuit 13, so that the feedback of the whole circuit is performed. The control is achieved by the dual cold cathode lamps CCFL1 and CCFL2. However, the double cold cathode lamps CCFL1 and CCFL2 of the above two double lamp driving systems are not easy to reach the same current of each lamp, so that the overall brightness is averaged. In addition, the conventional dual-lamp driving system technology can be used as reference to Figure 3, in which the circuit structure and the first structure; the more the number of transformer tubes of 1297900, the more the unit is to push the components such as balance and independent uniform number of objects' And if you want to push more than 0, it will result in a counter-independent balance of light bulbs, and the addition of independent lamps. So when the backlight is reversed, it becomes expensive. If there is no lamp, each independent voltage regulator, balance capacitor and balanced current flow can be the same. Although this method can reduce the current balance component of the inverter, the number of transformers that will also use the backlight is also used. Independent transformer transformer tube, increase its inductance, etc., to achieve the overall brightness of the transformer required for the inverter
狢職=之故，本發明鑒於習知技術之缺失，乃思及改良 X月之μ心，發明出本案之『驅動多燈管之變壓器結構』。 【發明内容】 本發明之主要目的係提供一種驅動多燈管之變壓器結 構，使得電流能平均流通複數燈管，來提升液晶顯示面板 之顯示效果。 本發明之另一目的係提供一種驅動多燈管之變壓器結 構 Μ在點冗燈管（k i c k - 〇 f f)時’信號經由該一次側線圈 輸入，藉由該鐵心組係將能量轉換於該複數二次側線圈， 用以輸出高電壓以驅動該複數燈管，其中該複數二次側線 圈平均繞線於該鐵心組上，該複數二次側線圈具有相同的 電流流過該複數燈管，使得整體的該複數燈管亮度均勻 有鏗於此’為了達到以上目的’本發明提供一種驅動 多燈管之變壓器結構，包含： 一變壓器，包含； 一鐵心組’該鐵心組包含一第一鐵心以及一第二 鐵心； 一繞線架，具有一中空區域，該中空區域用以容 置該第一鐵心以及該第二鐵心，形成一封閉磁路； 一次側線圈，係將該一次侧線圈繞線於該繞線 7 1297900 架；以及 複數二次側線圈，分別繞線於該第一鐵心以及該 第二鐵心之側邊鐵心，且該複數二次側線圈分別與複 數燈管電連接，用以驅動該複數燈管。 了解 本案得藉由以下列圖示與詳細說明，俾得一更深入之 【實施方式】 5月參閱第6圖係為本案第一較佳實施例之應用於逆變 态之驅動四根燈管之變壓器剖面示意圖。如第6圖所示， 應用於逆變器之驅動四根燈管之變壓器，包含··一變壓器 =及四根燈官（Lampi、Lamp2、Lamp3、Lamp4 )。該變壓 器包含：一鐵心組、一繞線架20、一次側線圈3〇以及複 數組二次側線圈（32、33〜35)。接著，該鐵心組包含一第_ 鐵心12以及一第二鐵心14，而該繞線架2〇具有一中空區 域，該中空區域用以容置該第一鐵心12以及該第二鐵心 ^4，形成一封閉磁路，且該鐵心組係可為ee、、或 等、、Ό 2型態。其中，該一次側線圈3 〇繞線於該繞線架2 〇， 且一電源1 0經由該一次側線圈30輸入。最後，該複數二 =側線圈（32、33〜35)分別繞線於該第一鐵心12以及該第 八鐵心14之側邊鐵心，，而該複數二次側線圈（32、33〜35) 么f人複數k g電連接，所以該複數二次―側線圈（32、33〜35) 二有相同的電流流過該複數燈管’且分別電連接該四根燈 ⑽P1、Lamp2、Lamp3、Lamp4)，以穩定流通的電流量， 進而提升整體的燈管平均亮度。 織^明，閱第7圖，係為本案第二較佳實施例之應用於逆 ，之驅動四根燈管之變壓器剖面示意圖。如帛7圖所 :哭其架構與第6圖相似，唯-的差異性在於該變 了之:亥少-人側線圈3 0繞線於該繞線架2 〇表面之側邊位 而忒複數—次側線圈（3 2、3 3〜3 5)分別位於該一次側線 8 12979〇〇 另外，本發明之驅動多燈管之變壓器方法，其步驟包 . 含： (a) 該電源10信號經由該一次侧線圈3 0輸入； (b) 該複數二次側線圈（3 2、3 3〜3 5)平均繞線於該鐵心 組上； (c) 藉由該鐵心組將該一次側線圈30的能量轉換於該 複數二次側線圈（32、33〜35);以及 (d) 該複數二次側線圈（32、33〜35)會有相同的電流流 過該複數燈管（Lampl、Lamp2〜Lamp8 )。 鲁 並藉由（e)當點亮燈管時，該變壓器用以平衡該複數燈 官（Lampl、Lamp2〜Lamp8 )所流通的電流量，以達到整體 燈管的平均亮度一致。 另外，本發明之驅動多燈管之變壓器可應用於一液晶 顯示器、應用於一液晶顯示器之一背光模組、一掃描器、 —影印機以及需要運用多組燈管之設備，藉以平衡該複數 垃I ( Lampl、Lamp2〜Lamp8)所流通的電流量，進而達到 整體燈管的平均亮度一致。 、 本案得由熟知此技術之人士任施匠思而為諸般修飾， φ 4皆不脫如附申請專利範圍所欲保護者。 【圖式簡單說明】 - ，1〜5圖係為習知之雙燈管驅動系統示意圖。 -第6圖係為本案第一較佳實施例之應用於逆變器之驅動 四根燈管之變壓器剖面示意圖。 第7圖係為本案第二較佳實施例之應用於逆變器之驅動 四根^燈管之變壓器剖面示意圖。 第8圖係為本案第三較佳實施例之應用於逆變器之驅動 ^燈管之變壓器剖面示意圖。 第9圖係為本案第四較佳實施例之應用於逆變器之 八根燈管之變壓器剖面示意圖。 動 1297900 第1 〇圖係為本案第五較佳實施例之應用於逆變器之驅 動八根浮接燈管之變壓器剖面示意圖。 ’ 【主要元件符號說明】 … 驅動電路11In view of the dereliction of duty, the present invention has invented the "transformer structure for driving multiple lamps" in the present invention in view of the lack of the prior art. SUMMARY OF THE INVENTION The main object of the present invention is to provide a transformer structure for driving a plurality of lamps, so that current can flow a plurality of lamps on average to improve the display effect of the liquid crystal display panel. Another object of the present invention is to provide a transformer structure for driving a multi-lamp tube. When a flash tube (kick - 〇ff) is used, a signal is input through the primary side coil, and the core group converts energy into the complex a plurality of secondary side coils for outputting a high voltage to drive the plurality of lamps, wherein the plurality of secondary side coils are wound on the core group, the plurality of secondary side coils having the same current flowing through the plurality of coils The lamp tube makes the overall brightness of the plurality of lamps uniform. In order to achieve the above object, the present invention provides a transformer structure for driving a plurality of lamps, comprising: a transformer comprising: a core group comprising a core group a first core and a second core; a bobbin having a hollow region for receiving the first core and the second core to form a closed magnetic circuit; a side coil is wound around the winding 7 1297900; and a plurality of secondary side coils are respectively wound around the first core and the side core of the second core, and the plurality of secondary side coils are divided Complex number of lamps connected to the power for driving the plurality of lamps. To understand the case, the following diagrams and detailed explanations can be used to obtain a more in-depth method. [Embodiment] May 6 is the first preferred embodiment of the present invention. Schematic diagram of the transformer profile. As shown in Fig. 6, the transformer used to drive the four lamps of the inverter includes a transformer = and four lamp officers (Lampi, Lamp2, Lamp3, Lamp4). The transformer comprises: a core group, a bobbin 20, a primary side coil 3〇, and a complex array secondary side coil (32, 33 to 35). Then, the core group includes a first core 12 and a second core 14, and the bobbin 2 has a hollow area for receiving the first core 12 and the second core 4, A closed magnetic circuit is formed, and the core group can be ee, or or the like, Ό 2 type. The primary side coil 3 is wound around the bobbin 2 〇, and a power source 10 is input via the primary side coil 30. Finally, the plurality of side coils (32, 33 to 35) are respectively wound around the first core 12 and the side core of the eighth core 14, and the plurality of secondary coils (32, 33~) 35) If the person has a plurality of kilometers of electrical connection, the plurality of secondary coils (32, 33 to 35) have the same current flowing through the plurality of lamps and electrically connect the four lamps (10) P1, Lamp2, respectively. Lamp3, Lamp4), to stabilize the amount of current flowing, and thus improve the overall brightness of the overall tube. Weaving ^ Ming, see Figure 7, is a cross-sectional view of the transformer used to drive the four lamps in the reverse of the second preferred embodiment of the present invention. As shown in Fig. 7: The structure of crying is similar to that of Fig. 6, but the difference is that the change is made: the less-human-side coil 30 is wound on the side of the surface of the winding frame. The complex-secondary coils (3 2, 3 3 to 3 5) are respectively located at the primary side line 8 12979. In addition, the transformer method for driving a multi-lamp of the present invention, the step package thereof, includes: (a) the power supply 10 signal Input through the primary side coil 30; (b) the plurality of secondary side coils (3 2, 3 3 to 3 5) are wound on the core group on average; (c) the primary side is supported by the core group The energy of the coil 30 is converted to the plurality of secondary side coils (32, 33 to 35); and (d) the plurality of secondary side coils (32, 33 to 35) have the same current flowing through the plurality of lamps (Lampl, Lamp2~Lamp8). By (e) when the lamp is lit, the transformer is used to balance the amount of current flowing through the plurality of lamps (Lampl, Lamp2 to Lamp8) to achieve uniform brightness of the overall lamp. In addition, the transformer for driving a multi-lamp of the present invention can be applied to a liquid crystal display, a backlight module applied to a liquid crystal display, a scanner, a photocopier, and a device that needs to use a plurality of sets of lamps, thereby balancing the plural The amount of current flowing through the lamp I (Lamp, Lamp2 to Lamp8) is consistent with the average brightness of the overall lamp. This case has been modified by people who are familiar with this technology, and φ 4 is not removed as intended by the scope of the patent application. [Simple diagram of the diagram] - , 1 ~ 5 diagram is a schematic diagram of the conventional dual lamp tube drive system. - Figure 6 is a schematic cross-sectional view of a transformer for driving four inverters in accordance with a first preferred embodiment of the present invention. Figure 7 is a cross-sectional view showing the transformer applied to the inverter of the second preferred embodiment of the present invention. Figure 8 is a cross-sectional view showing the transformer applied to the driving lamp of the inverter in the third preferred embodiment of the present invention. Figure 9 is a cross-sectional view showing the transformer of the eight lamps applied to the inverter in the fourth preferred embodiment of the present invention. Motion 1297900 The first diagram is a cross-sectional view of a transformer for driving eight floating light tubes applied to an inverter according to a fifth preferred embodiment of the present invention. ’ [Main component symbol description] ... drive circuit 11
變壓器 ΤΙ、Τ2、Τ3、Τ4、Τ5、Τ6、Τ7〜ΤΝ 雙燈管 CCFL1、CCFL2、CCFL3 〜CCFLN 電容 Cl、C2、C3〜CN 脈衝寬度調變控制電路13 突波抑制器TVS • 電流感測器1 6、17 電阻 R、Rl、R2、R3〜RN 直流電源VIN 交流電源V 0 電源1 0 第一鐵心1 2 第二鐵心1 4 繞線架2 0 次側線圈3 0 0 複數二次侧線圈32、33〜35 複數組燈管 Lampl、Lamp2〜Lanip4、Lampl、Lanip2〜Lanip8 U型式燈管Ul、U2〜U4Transformer ΤΙ, Τ2, Τ3, Τ4, Τ5, Τ6, Τ7~ΤΝ Dual lamp CCFL1, CCFL2, CCFL3~CCFLN Capacitance Cl, C2, C3~CN Pulse width modulation control circuit 13 Surge suppressor TVS • Current sensing Device 1 6, 17 Resistor R, Rl, R2, R3 ~ RN DC power supply VIN AC power supply V 0 Power supply 1 0 First core 1 2 Second core 1 4 Winding frame 2 0 Side coil 3 0 0 Multiple times Side coils 32, 33~35 Multiple array lamps Lampl, Lamp2~Lanip4, Lampl, Lanip2~Lanip8 U-type lamps Ul, U2~U4