M309679 八、新型說明： 【·新型所屬之技術領域】 β本新型涉及一種放電燈驅動裝置，尤其涉及一種應用於液 晶顯示器（liquid crystal display，LCD)背光源模組之放 電燈驅動裝置。 【先前技術】 液晶顯示（Liquid Crystal Display，LCD)面板係以放 電燈（Discharge Lamp)，特別係冷陰極螢光燈（c〇idCathodeM309679 VIII. New description: 【·New technology field】 β This new type relates to a discharge lamp driving device, and more particularly to a discharge lamp driving device applied to a liquid crystal display (LCD) backlight module. [Prior Art] Liquid Crystal Display (LCD) panels are based on Discharge Lamps, especially cold cathode fluorescent lamps (c〇idCathode)
Fluorescent Lamp’ CCFL)作為背光（Backlight)系統之光 源。典型地’冷陰極螢光燈係由換流器電路（Inverter Circui t) 來驅動，其可供應交流訊號至放電燈。 圖5a係一習知電子設備5之平面示意圖，且同時參閱圖 5b，係圖5a從D方向看之侧視圖。該電子設備5包括一液晶 顯示面板510及一放電燈驅動裝置。其中，該放電燈驅動裝置 用於驅動並行設置於液晶顯示面板51〇上的複數放電燈54(參 閱圖5b) ’其包括一控制電路板51。該控制電路板51具有複 數連接器522，包括一平衡電路52及一控制電路53。其中， 該平衡電路52包括複數電感元件521，連接於該等放電燈54。 控制電路53設置於控制電路板51上，用於將一接收到的 電訊號轉化為一可驅動該等放電燈54之電訊號。平衡電路52 亦設置於控制電路板51上，與控制電路5 3相連，用於平衡流 經該專放電燈54的電流。該控制電路板51藉由該等連接哭522 7 M309679 與放電燈54相連。 *該種放電燈驅動裝置係將前級電路（省略繪出）輸出的直 流訊號（約24V)轉化為驅動該等放電燈的交流訊號，故將該 種驅動方式定義為低壓驅動方式。 另一種習知之放電燈驅動裝置與圖5a所示之電子設備5 中的驅動裝置基本相同，區別在於另一放電燈驅動裝置還包括 一功率因數校正電路（P〇wer Factor Correction，PFC)，其 φ直接接收市電電源交流訊號（例如：中國大陸地區為22〇v，北 美地區為110V。），並將該交流訊號透過功率因數校正電路轉 化為一直流訊號（約4〇〇v)輸出至換流器電路，點亮放電燈。相 對於上述低壓驅動方式，該種驅動方式定義為高壓驅動方式。 •由於高壓驅動方式省略把400V訊號轉化為24V的電路，因此， 具有高效率及低成本。 上述兩種驅動方式中，放電燈驅動裝置均透過該等連接器 _與液晶顯示面板連接，然，在測試及組裝流程中，設置於液晶 顯示面板中的燈管與連接器的重複插拔運作會影響背光系統 的穩定性。故，面板廠商為了背光系統的穩定性，其面板通常 攜帶測試過程中所使用之放電燈_裝置（通t為低壓驅動方 式）’省略重複插拔之程序。 由於面板廠商並非專業生產放電燈驅動裝置的廠商，該組 合方式既增加面板廠商的成本和複雜性，又限制成品出貨廠 商’例如·電視廢商，選擇驅動方式的自由度。 8 M309679 【新型内容】 有鑑於此，需提供一種放電燈驅動裝置，其中，平衡電路 與控制電路設置於不同電路板，降低面板廠商的成本和複雜 性。 另外，還需提供一種放電燈驅動裝置，其中，平衡電路與 控制電路亦設置於不同電路板，降低面板廠商的成本和複雜 性。 .此外，還需提供一種電子設備，其中，平衡電路與控制電 路亦設置於不同電路板，降低面板廠商的成本和複雜性。 -種放電燈驅動裝置，用於驅動複數負載。該放電燈驅動 裝置包括-控制電路板、-連接板以及—組高壓線。其中，該Fluorescent Lamp' CCFL) is the light source for backlighting systems. Typically, a cold cathode fluorescent lamp is driven by an inverter circuit that supplies an alternating current signal to the discharge lamp. Figure 5a is a schematic plan view of a conventional electronic device 5, and with reference to Figure 5b, a side view of Figure 5a as seen from the direction D. The electronic device 5 includes a liquid crystal display panel 510 and a discharge lamp driving device. The discharge lamp driving device is for driving a plurality of discharge lamps 54 (refer to FIG. 5b) which are disposed in parallel on the liquid crystal display panel 51, and includes a control circuit board 51. The control circuit board 51 has a plurality of connectors 522 including a balancing circuit 52 and a control circuit 53. The balancing circuit 52 includes a plurality of inductance elements 521 connected to the discharge lamps 54. The control circuit 53 is disposed on the control circuit board 51 for converting a received electrical signal into an electrical signal that can drive the discharge lamps 54. The balancing circuit 52 is also disposed on the control circuit board 51 and is coupled to the control circuit 53 for balancing the current flowing through the dedicated discharge lamp 54. The control circuit board 51 is connected to the discharge lamp 54 by the connection crying 522 7 M309679. * This type of discharge lamp driving device converts the DC signal (about 24V) output from the front stage circuit (not shown) into an AC signal for driving the discharge lamps. Therefore, this driving method is defined as a low voltage driving method. Another conventional discharge lamp driving device is basically the same as the driving device in the electronic device 5 shown in FIG. 5a, except that the other discharge lamp driving device further includes a power factor correction circuit (PFC), which φ directly receives the mains power exchange signal (for example: 22〇v in mainland China and 110V in North America), and converts the AC signal into a constant current signal (about 4〇〇v) through the power factor correction circuit. The current circuit illuminates the discharge lamp. Compared with the above low-voltage driving method, this driving mode is defined as a high-voltage driving method. • Since the high-voltage driving method omits the circuit that converts the 400V signal into 24V, it has high efficiency and low cost. In the above two driving modes, the discharge lamp driving device is connected to the liquid crystal display panel through the connectors _, however, in the testing and assembly process, the lamp tube and the connector are repeatedly inserted and removed in the liquid crystal display panel. Will affect the stability of the backlight system. Therefore, for the stability of the backlight system, the panel manufacturer usually carries the discharge lamp_device (passing through the low voltage driving mode) used in the test process, omitting the repeated insertion and removal procedure. Since the panel manufacturer is not a manufacturer specializing in the production of discharge lamp driving devices, the combination method not only increases the cost and complexity of the panel manufacturers, but also limits the freedom of the finished product shipping company, such as the TV waste merchant, to select the driving method. 8 M309679 [New content] In view of this, it is necessary to provide a discharge lamp driving device in which the balancing circuit and the control circuit are disposed on different circuit boards, thereby reducing the cost and complexity of the panel manufacturer. In addition, there is a need to provide a discharge lamp driving device in which the balancing circuit and the control circuit are also disposed on different circuit boards, reducing the cost and complexity of the panel manufacturer. In addition, there is a need to provide an electronic device in which the balancing circuit and the control circuit are also disposed on different circuit boards, reducing the cost and complexity of the panel manufacturer. A discharge lamp driving device for driving a plurality of loads. The discharge lamp driving device includes a control circuit board, a connection board, and a set of high voltage lines. Among them, the
設置—控制電路 %路’用於將一接收到的訊號轉換為 訊號。該連接板上設置一平衡電路， 電流，其中，該連接板係一四層板， —可驅動該等負載之高壓訊號 用於平衡流經該等負載 9 M309679 且該連接板平行於該控制電路板設置，且相互靠近。該組高壓 、本連接於該控制電路板及該連接板，其中，該控制電路藉由該 組向壓線將高壓訊號輸出至該平衡電路。 種電子设備，包括一面板以及一放電燈驅動裝置。該放 電燈驅動裝置用於驅動並行設置於該面板上的複數負載，其包 括一控制電路板、一連接板以及一組高壓線。其中，該控制電 路板上設置一控制電路，用於將一接收到的訊號轉換為一可驅 •動該等負載之高壓訊號。該連接板上設置一平衡電路，用於平 衡流經該等負載的電流，其中，該連接板大致垂直於該控制電 路板設置。該組高壓線連接於該控制電路板及該連接板，其 中，該控制電路藉由該組高壓線將高壓訊號輸出至該平衡電 • 路。 本新型之放電燈驅動裝置中，平衡電路與控制電路分別設 置於不同電路板，面板廢商出貨時，僅需將具有平衡電路的連 _接板置入面板内，無須置入控制電路板，節約成本、降低複雜 性。 【實施方式】 圖la所示係本新型第一實施方式中電子設備丨之平面示 意圖，且同時參閱圖lb，係本新型圖13從A方向看之侧視圖。 該電子設備1包括一面板110及一放電燈驅動裝置1〇〇。其中， 該放電燈驅動裝置100用於驅動並行設置於該面板110上的複 數負載14(參閱圖lb)’例如·放電燈（j^ scharge Lamp)， M309679 其包括一控制電路板π、一連接板15、一組高壓線17及一組 保護線18。該控制電路板11具有一第一連接器ill及一第三 連接器113，其上設置有一控制電路13。該連接板15具有一 第二連接器112及-第四連接器114，其上設置有一平衡電路 (未標示於圖中）及—保護電路（省略％出）。其中，該平衡 電路包括複數電感元件m，連接於該等貞載14。本實施方式 中’該面板1 〇為液晶顯示面板。 • ㈣電路13設置於控制電路板11上，用於將-接收到的 訊號轉換為一可驅動該等負載14之高壓訊號。平衡電路設置 於連接板15上，用於平衡流經該等負载14的電流。該組高壓 -線17連接控制電路板11及連接板15。詳而言之，第一連接器 'U1設置於控制電路板13,第二連接器112設置於連接板15， 藉由該組高壓線17連接第一連接器lu與第二連接器丨12。因 此，控制電路板η上的高壓訊號可輪出至連接板15。本實施 鲁方式中’該組高壓線17包括一高電平高壓線及一低電平高壓 線。 本新型其匕實施方式中，該組鬲壓線17亦可直接以谭接 的方式連接控制電路板11及連接板15,控制電路13藉由該組 高塵線17將高壓訊號輸出至平衡電路，此時，第一連接器m 與第二連接器112可省略。 保護電路亦設置於連接板15,並輸出一保護訊號至控制電 路13，從而控制控制電路13的輸出。第三連接器ι13設置於 11 M309679 控制電路板11，第四連接器114設置於連接板15，並藉由該 組保護線18連接第三連接器113與第四連接器114。即，該組 保護線18亦連接控制電路板11及連接板Η。 當該等負載14發生異常，例如：短路、開路時，保護電 路透過保護線18將保護訊號輸出至控制電路13，關斷控制電 路13之輸出，用於保護該放電燈驅動裝置ι〇〇。 在本新型其它實施方式中，該組保護線18亦可直接以焊 接的方式連接控制電路板U及連接板15，同樣，第三連接器 113與第四連接器114可以省略。 本實施方式中，該放電燈驅動裝置100的驅動方式為低壓 驅動方式。由於平衡電路與保護電路均自習知的控制電路板u 上移出且5又置於該連接板15上，同時藉由較少的連接界及 高壓線17連接控制電路板n及連接板15。因此，面板廠商出 貪時僅為將連接板15置入面板11〇内，無須置入控制電路 板11，節約成本、降低複雜性。又，連接板15設置於面板11〇 的側邊且大致垂直於控制電路板11，故節省放電燈驅動裝置 100佔據面板110之空間，為成品出貨廠商，例如：電視廠商， 預留更多的設計空間。 本實施方式中，該等負載14的高壓端電極可直接焊接至 連接板15上，而低壓端電極可用連接線連接，故節省成本， 且便於組裝。 圖2a所示係本新型第二實施方式中電子設備2之平面示 12 M309679 意圖，且同時參閱圖2b，係本新型圖2a從B方向看之側視圖。 該電子設備2與本新型圖ia所示之電子設備丨基本相同，區 別在於：圖2a所示之放電燈驅動裝置2〇〇的驅動方式為高壓 驅動方式。該控制電路板21還具有一第五連接器215,透過該 第五連接器215可直接連接市電電源交流電壓（例如：中國大 陸地區為220V ’北美地區為ii〇v。）。又，該放電燈驅動裝置 200還具有一弟六連接器216及一第七連接器217。其中，高 #壓線27之一端是以第一連接器211連接控制電路板21，其另 一端是透過第六連接器216後直接以焊接方式連至連接板 25。本實施方式中，第六連接器216包括一公連接器以及一母 '連接器。同樣，保護線28之一端亦是以第三連接器213連接 •控制電路板2丨，其另一端是透過第七連接器217後連接於連接 板25上之第四連接器214。其中，該第七連接器217亦包括一 公連接器以及一母連接器。 • 本新型其它實施方式中，第六連接器216以及第七連接器 217亦可被省略。 圖3a所示係本新型第三實施方式中電子設備3之平面示 意圖’且同時參閱圖3b，係本新型圖3a從C方向看之侧視圖。 該電子設備3與本新型圖ia所示之電子設備1基本相同，區 別在於：該電子設備3之放電燈驅動裝置300中的連接板35 與控制電路板31共面，且相互靠近。高壓線37及保護線38 直接以焊接方式連接控制電路板31及連接板35。該連接板35 13 M309679 還具有複數連接器322，並藉由該等連接器322與複數負載34 相連’、中每負載34的高壓端電極均透過一連接線39與 連接器322連接。太眘尬士斗，Λ 枣貫施方式中，該連接板35為四層板，故 八在面板310上所佔用的空間較小，同樣，該種方式亦可節省 放電燈驅動裝置300佔據面板310之面積。本實施方式中，面 板廠商出貨時，同樣僅需將連接板35置入面板310内，無須 置入控制電路板3卜而成品出貨商可藉由高壓線37及保護線 • 38直接以焊接方式連接控制電路板31及連接板％。 本新型其它實施方式中，成品出貨商亦可藉由少數連接 器、同壓線37及保護線38連接控制電路板31及連接板35。 圖4a所不係本新型圖&之控制電路13之模組圖。控制 "電路13包括一驅動開關電路131、一變壓電路132、一迴授電 路 133 以及脈衝寬度調變（puise width modulation，PWM) 控制器134。驅動開關電路131用於將一接收到的訊號轉換為 鲁一父流訊號。變壓電路132與驅動開關電路131相連，用於將 該父流訊號轉化為可驅動該負載14之高壓訊號。本實施方式 中’該驅動開關電路131接收到的訊號為一直流訊號（約 24V)’其輸出之交流訊號係一方波訊號，變壓電路ι32輸出之 父流訊號係一弦波訊號。迴授電路133連接連接於變壓電路 132與PWM控制器134之間，用於迴授流經該等負載14之電 流。PWM控制器134連接於驅動開關電路131，用於控制驅動 開關電路131之輸出。本實施方式中，該變壓電路132包括至 14 M309679 少-變壓器（省略紛出），且每一變壓器均可連接至少兩個負 載14 〇 .圖牝所示係本新型圖2a之控制電路23之模組圖。該控 制電路23與本新型圖4am示之控制電路13基本相同，區別 在於.控制電路23還包括-功率因數校正電路，與驅動開 關電路231相連，用於將一接收到的訊號轉換為一直流訊號， 並校正控制電路23之功率因數。本實施方式中，該接收到的 _訊號為市電電源交流電壓。 本新1之放電燈驅動裝置，平衡電路與控制電路分別設置 於不同電路板，使得面板廠商出貨時，僅需將具有平衡電路的 、連接板置入面板内，無須置入控制電路板，降低面板廠商的成 •本，且保證背光系統的穩定性。又，藉由較少的連接器及高壓 線連接控制電路板及連接板，裝配簡單，且增強成品出貨廠商 選擇驅動方式（高壓驅動方式或低壓驅動方式）的自由产。 • 本新型雖以較佳實施例揭露如上，然其並非用以阳定本新 型。惟，任何熟悉此項技藝者，在不脫離本新型之 疋 傅神和範圍 内，§可做稍許更動與潤飾，因此本新型之保 ^ _ 執圍當視後附 之申清專利範圍所界定者為準。 傻町 【圖式簡單說明】 圖la係本新型第_實施方式中電子設備 了卸示咅ι?ΐ。 圖lb係本新型圖ia從a方向看之側視圖。 ° 圖2a係本新型第二實施方式中電子設備之平 两示意圖。 15 M309679 圖2b係本新型圖2a從B方向看之側視圖。 - 圖3a係本新型第三實施方式中電子設備之平面示意圖。 . 圖3b係本新型圖3a從C方向看之側視圖。 圖4a係本新型圖la之控制電路之模組圖 圖4b係本新型圖2a之控制電路之模組圖。 圖5a係一習知電子設備之平面示意圖。 圖5b係圖5a從D方向看之侧視圖。The setting - control circuit % path is used to convert a received signal into a signal. A balance circuit, current is disposed on the connection board, wherein the connection board is a four-layer board, and a high voltage signal capable of driving the loads is used to balance the flow through the load 9 M309679 and the connection board is parallel to the control circuit The boards are set up and close to each other. The high voltage is connected to the control circuit board and the connecting board, wherein the control circuit outputs a high voltage signal to the balancing circuit by the group to the pressing line. An electronic device includes a panel and a discharge lamp driving device. The discharge lamp driving device is configured to drive a plurality of loads disposed in parallel on the panel, and includes a control circuit board, a connecting board, and a set of high voltage lines. The control circuit board is provided with a control circuit for converting a received signal into a high voltage signal that can drive the loads. A balance circuit is provided on the connection plate for balancing current flowing through the loads, wherein the connection plate is disposed substantially perpendicular to the control circuit board. The set of high voltage lines are connected to the control circuit board and the connection board, wherein the control circuit outputs the high voltage signal to the balanced circuit by the set of high voltage lines. In the discharge lamp driving device of the present invention, the balancing circuit and the control circuit are respectively disposed on different circuit boards, and when the panel is shipped, the connection board having the balancing circuit only needs to be placed in the panel without inserting the control circuit board. , saving costs and reducing complexity. [Embodiment] Fig. 1a is a plan view showing an electronic device in the first embodiment of the present invention, and referring to Fig. 1b, is a side view of Fig. 13 seen from the direction A. The electronic device 1 includes a panel 110 and a discharge lamp driving device 1A. The discharge lamp driving device 100 is configured to drive a plurality of loads 14 (see FIG. 1b) that are disposed in parallel on the panel 110, for example, a discharge lamp, and the M309679 includes a control circuit board π, a connection. A board 15, a set of high voltage lines 17 and a set of protection lines 18. The control circuit board 11 has a first connector ill and a third connector 113 on which a control circuit 13 is disposed. The connecting plate 15 has a second connector 112 and a fourth connector 114 on which a balancing circuit (not shown) and a protection circuit (not shown) are disposed. The balance circuit includes a plurality of inductance elements m connected to the load carriers 14. In the present embodiment, the panel 1 is a liquid crystal display panel. • (d) The circuit 13 is disposed on the control circuit board 11 for converting the received signal into a high voltage signal that can drive the loads 14. A balancing circuit is disposed on the connecting plate 15 for balancing the current flowing through the loads 14. The set of high voltage lines 17 are connected to the control circuit board 11 and the connection board 15. In detail, the first connector 'U1 is disposed on the control circuit board 13, and the second connector 112 is disposed on the connection board 15, and the first connector lu and the second connector 丨12 are connected by the set of high voltage lines 17. Therefore, the high voltage signal on the control board n can be rotated out to the connection board 15. In the present embodiment, the set of high voltage lines 17 includes a high level high voltage line and a low level high voltage line. In the embodiment of the present invention, the set of pressing wires 17 can also be directly connected to the control circuit board 11 and the connecting board 15 by the tandem connection, and the control circuit 13 outputs the high voltage signal to the balancing circuit by the set of high dust lines 17. At this time, the first connector m and the second connector 112 may be omitted. The protection circuit is also disposed on the connection board 15 and outputs a protection signal to the control circuit 13, thereby controlling the output of the control circuit 13. The third connector ι13 is disposed on the 11 M309679 control circuit board 11, and the fourth connector 114 is disposed on the connection board 15, and the third connector 113 and the fourth connector 114 are connected by the set of protection wires 18. That is, the set of protection wires 18 is also connected to the control circuit board 11 and the connection board Η. When an abnormality occurs in the load 14, for example, a short circuit or an open circuit, the protection circuit outputs a protection signal to the control circuit 13 through the protection line 18, and turns off the output of the control circuit 13 for protecting the discharge lamp driving device. In other embodiments of the present invention, the set of protection wires 18 may also be directly connected to the control circuit board U and the connection board 15 by soldering. Similarly, the third connector 113 and the fourth connector 114 may be omitted. In the present embodiment, the driving method of the discharge lamp driving device 100 is a low-voltage driving method. Since the balancing circuit and the protection circuit are both removed from the conventional control circuit board u and 5 is placed on the connecting board 15, the control circuit board n and the connecting board 15 are connected by a small number of connection lines and high voltage lines 17. Therefore, when the panel manufacturer is greedy, only the connecting board 15 is placed in the panel 11〇, and the control circuit board 11 does not need to be placed, which saves cost and reduces complexity. Moreover, the connecting plate 15 is disposed on the side of the panel 11A and substantially perpendicular to the control circuit board 11, so that the discharge lamp driving device 100 occupies the space of the panel 110, and reserves more for the finished product carrier, for example, a TV manufacturer. Design space. In this embodiment, the high voltage end electrodes of the loads 14 can be directly soldered to the connecting plate 15, and the low voltage end electrodes can be connected by connecting wires, thereby saving cost and facilitating assembly. 2a is a plan view of the electronic device 2 in the second embodiment of the present invention. Referring to FIG. 2b, a side view of the present invention as seen from the direction B is shown. The electronic device 2 is substantially the same as the electronic device 所示 shown in Fig. ia of the present invention, in that the driving mode of the discharge lamp driving device 2 shown in Fig. 2a is a high voltage driving mode. The control circuit board 21 also has a fifth connector 215 through which the mains AC voltage can be directly connected (e.g., 220V in the mainland of China to ii〇v in North America). Further, the discharge lamp driving device 200 further has a sixth connector 216 and a seventh connector 217. The one end of the high-voltage line 27 is connected to the control circuit board 21 by the first connector 211, and the other end is connected to the connecting board 25 by soldering directly after passing through the sixth connector 216. In this embodiment, the sixth connector 216 includes a male connector and a female connector. Similarly, one end of the protection wire 28 is also connected by the third connector 213. The control circuit board 2 is connected to the fourth connector 214 which is connected to the connection board 25 through the seventh connector 217. The seventh connector 217 also includes a male connector and a female connector. • In other embodiments of the present invention, the sixth connector 216 and the seventh connector 217 may also be omitted. Fig. 3a shows a plan view of the electronic device 3 in the third embodiment of the present invention and also refers to Fig. 3b, which is a side view of Fig. 3a as seen from the direction C. The electronic device 3 is substantially identical to the electronic device 1 shown in Fig. ia of the present invention, in that the connecting plate 35 of the discharge lamp driving device 300 of the electronic device 3 is coplanar with the control circuit board 31 and is close to each other. The high voltage line 37 and the protection line 38 are directly connected to the control circuit board 31 and the connection board 35 by soldering. The connecting plate 35 13 M309679 also has a plurality of connectors 322 connected to the plurality of loads 34 by the connectors 322, and the high voltage terminal electrodes of each load 34 are connected to the connector 322 through a connecting line 39. In the judging method, the connecting plate 35 is a four-layer board, so the space occupied by the panel 310 is small, and similarly, the method can also save the discharge lamp driving device 300 occupying the panel. The area of 310. In this embodiment, when the panel manufacturer ships, it is only necessary to put the connecting board 35 into the panel 310, and the finished product supplier can directly solder by the high voltage line 37 and the protection line • 38 without placing the control circuit board 3. The control circuit board 31 and the connection board % are connected in a manner. In other embodiments of the present invention, the finished product supplier may also connect the control circuit board 31 and the connection board 35 by a small number of connectors, the same pressure line 37, and the protection line 38. Figure 4a is not a block diagram of the control circuit 13 of the present invention & The control " circuit 13 includes a drive switch circuit 131, a transformer circuit 132, a feedback circuit 133, and a pulse width modulation (PWM) controller 134. The driving switch circuit 131 is configured to convert a received signal into a Lu-parent signal. The transformer circuit 132 is coupled to the drive switch circuit 131 for converting the parent stream signal into a high voltage signal that can drive the load 14. In the present embodiment, the signal received by the drive switch circuit 131 is a constant current signal (about 24V). The output of the AC signal is a one-wave signal, and the output of the transformer circuit ι32 is a string signal. The feedback circuit 133 is connected between the transformer circuit 132 and the PWM controller 134 for feeding back the current flowing through the loads 14. The PWM controller 134 is coupled to the drive switch circuit 131 for controlling the output of the drive switch circuit 131. In this embodiment, the transformer circuit 132 includes 14 M309679 few-transformers (omitting spurs), and each transformer can be connected to at least two loads 14 〇. The control circuit 23 of the novel FIG. 2a is shown in FIG. Module diagram. The control circuit 23 is substantially the same as the control circuit 13 of the present invention shown in FIG. 4am, except that the control circuit 23 further includes a power factor correction circuit connected to the drive switch circuit 231 for converting a received signal into a continuous stream. The signal, and corrects the power factor of the control circuit 23. In this embodiment, the received _ signal is a commercial power supply AC voltage. In the discharge lamp driving device of the new one, the balancing circuit and the control circuit are respectively disposed on different circuit boards, so that when the panel manufacturer ships, only the connecting board with the balancing circuit needs to be placed in the panel, and the control circuit board is not required to be placed. Reduce the cost of the panel manufacturer and ensure the stability of the backlight system. In addition, the control board and the connection board are connected by a small number of connectors and high-voltage wires, which is easy to assemble and enhances the free production of the drive mode (high-voltage drive mode or low-voltage drive mode). • Although the present invention is disclosed above in the preferred embodiment, it is not intended to be used in this new form. However, anyone who is familiar with this skill can make a slight change and refinement without departing from the scope of this novel. Therefore, the protection of this new type is defined by the patent scope of the application. Subject to it. Silly Town [Simple description of the drawing] Figure la is a new type of electronic device in the present invention. Figure lb is a side view of the novel view ia as seen from the direction a. Figure 2a is a schematic view of the electronic device in the second embodiment of the present invention. 15 M309679 Fig. 2b is a side view of Fig. 2a of the present invention as seen from the direction B. - Figure 3a is a schematic plan view of an electronic device in a third embodiment of the present invention. Figure 3b is a side elevational view of Figure 3a of the present invention as seen from the direction C. Figure 4a is a block diagram of the control circuit of the novel Figure la. Figure 4b is a block diagram of the control circuit of Figure 2a of the present invention. Figure 5a is a schematic plan view of a conventional electronic device. Figure 5b is a side view of Figure 5a as seen from the direction D.
【主要元件符號說明】 電子設備 1 > 2 ^ 3 放電燈驅動裝置 100 、 200 、 300 面板 110 、 210 、 310 平衡電路 31 控制電路板 η、2卜 31 控制電路 13 、 23 、 33 負載 14、24、34 連接板 15 、 25 、 35 南壓線 17、27 保護線 18、28 連接線 39 連接器 m、112、113、114、2Η、213、 214 、 215 、 216 、 217 、 322 電感元件 12卜 22卜 321 16 M309679 驅動開關電路 131 > 231 . 變壓電路 132 、 232 „ 迴授電路 133 、 233 PWM控制器 134 、 234 功率因數校正電路 235 17[Description of main component symbols] Electronic device 1 > 2 ^ 3 Discharge lamp driving device 100, 200, 300 Panel 110, 210, 310 Balance circuit 31 Control circuit board η, 2b 31 Control circuit 13, 23, 33 Load 14, 24, 34 connecting plates 15, 25, 35 South crimping lines 17, 27 protective wires 18, 28 connecting wires 39 connectors m, 112, 113, 114, 2Η, 213, 214, 215, 216, 217, 322 Inductive component 12卜22卜321 16 M309679 drive switch circuit 131 > 231 . Transformer circuit 132 , 232 „ feedback circuit 133 , 233 PWM controller 134 , 234 power factor correction circuit 235 17