M275521 八、新型說明： 【新型所屬之技術領域】 本創作係關於一種具輔助繞組之平衡變壓器，特別是 關於一種冷陰極螢光燈管（CCFL)之驅動電路中所使用$ 變壓器。 ' 【先前技術】 冷陰極螢光燈管（CCFL，Cold Cathode FlU0rescen Lamp)已知係使用於液晶顯示面板（LCD Pane 1 )中做肩 月光核組（Backlight System)之光源。此等冷陰極螢夫 煜官係由一稱為換流器（Inverter)之驅動電路所驅動 由ίΐ術進步及消費者的需求，LCD面板尺寸不斷增大， ，得燈管已無法滿足其照明，因而需要使甩二個或更 夕:^ g。為了確保LCD面板的亮度均勻，必須隨時調節 各燈管之電流，使流經每一燈管之電流量相等。但由於户 陰極螢光燈管係高度不穩定且具有負阻抗特性等種種^ 因=得燈管阻抗很難維持—致，造成各燈管阻抗改變而 ，電成揲法達成相等。各燈管之間電流不相等，除了會使 勾外’電流太大的燈管還會減短壽命，使得各燈 S間的老化速率（Aging Rate)不一致。 技術中，使複數個冷陰極螢光燈管具有相同亮度 回方式’是對每—個燈管使用個別的驅動電路及 所有燈管的電流可以-共同控制信號來予以 驅動外=弟一圖顯示習知技術採用個別驅動電路來 燈总螢管之電路架構，其中係以二燈管為例。 且& 、2係分別受電路13、14及變壓器15、16所驅 ⑧ 5 M275521 =工V n、12之電流ίη、ίΐ2分別回授至電 ::流相等之效果。然而，由於需要為每一燈管設：一： 動匕制電路，此種電路相纟+ 一 用較大的”。 對地具有“之70件成本，且佔 :種，知不需要設置多個驅動控制電路之技術，係使 ，）元件’來使各燈管之間的電流差異盡 二tL縮小。第二w顯示f知技術採用單—驅動電路來驅 動β陰極螢紐管之·_圖，其係以二燈管為例。如 圖所不，二燈管21、22係成並聯連接，並由一電路23及 一變f器25所驅動。二燈管2卜22之高壓端係分別串接 一電容27、28做為鎮流元件（BaUast)。二電容27、28 係具有相同之阻抗，且其阻抗值遠大於燈f 21、22之阻 抗：足=使得流經二燈管2卜22之電流心的大小主 要受電容阻抗所支配。亦即，即使二燈管21、22之阻抗 產生差異時，對電流hl、L之差異的影響非常輕微而可 忽略。因此二個受共同高壓驅動源所驅動之燈管2丨、 可被调節成具有相近之電流值。然而，為了使電流分配控 制可以更精確，亦即，使電流hl、L之差異盡可能縮小， 此電路將必須使用高阻抗之鎮流元件，故需要異常高的驅 動電壓。高驅動電壓的產生與處理是非常耗費成本且困難 達成的，因此此種方式並未被廣泛地使用。 請參考第三圖，為習知技術採用差動扼流器來平衡冷 陰極螢光燈管電流之電路架構圖。當電流Isi、&相同時， 則流過第一線圈302和第二線圈304之電流也相等，並， M275521 電流IS1在第一線圈302產生的磁動勢與電流〖Μ在第二線 圈304產生的磁動勢也相等，並且相互抵銷，因此在差動 扼流器30中並無磁通互通。同時，差動扼流器3〇中產生 的，磁通Φ卜Φ2可以各自經外側的空氣間隙完成迴路， 但疋由於空氣間隙的磁阻报高因此此迴路所引致的帝 效應一般可以忽略。 电成 ©第一燈官L1的電流與第二燈管L2的電流 不相同時，則電流I3I在第一線目302上所產生的磁動勢2 與電流I32在第二線圈304上所產生的磁動勢也不相同， 即差動扼流器30中的磁動勢不相等，二者的差值會於 動扼流器30中產生大量的磁通φ，該磁通φ切割第一線 圈3(^2與第二線圈3〇4,並會在其端點間感應產生一個修 正，壓Δν，該修正電壓會迫使第一燈管u的電流〔 與第二燈管L2的電流I”回復平衡均等。 31 帝於白知使用差動扼流裔3〇作為平衡冷陰極榮光燈 ’仍需同時使用額外的燈管保 !平均日!的保護與電壓檢知器犯作為檢知線圈上= 里同^，差動扼流器30將線圈上流過之電流量訊穿 =:;33以穩定流經二燈管L1、L2之電流心” 路31連接於差動扼流器30之二個線圈上， 差動扩法哭、凡件（Q1、Γ、Q3·.·等）組成，可作為偵測 衡，3〇哉上的電流是否達到規格内，若是極度不平 時之伴號給控制1133，作為燈管電流異常 瘦動作。習知使用額外的燈管保護電路3 l、Q2、⑽等三個電晶體’來作為燈管保護時的^ ⑧ M275521 關動作。然，燈營 (Q卜^^、“、^又兒路^組成所需要的電子元件 於組裝生產時” 、D5···)其元件數量多且昂責，並 【新型内容】的浪費時間及人力。 變壓二=係提供-具辅助繞組之多燈管平衡 時將訊號傳送到控t不平衡或異常時之訊號制，並同 本創作為_種：’以達成燈管異常時之保護動作。 陰極燈管1包：：繞組之平衡變壓器，其連接於二個冷 於磁芯上捲燒有—第作相^祕徑之磁芯； 该第一綠固命# 線圈、一弟二線圈及一輔助線圈； 該二冷陰捲繞方向相反。其中，當通過 麼，在帝、、*=;电〜平衡時，輔助線圈兩端無感應電 ;二:：不平衡或異常時，該輔助線圈會感應-電懕 差电堡差可以作為保護回授訊號使用。 — 術内ί 了1貝審查委員能更進-步暸解本創作特徵及技 :附：=閱”有關本創作之詳細說明與附圖，然而 'θ^提供芩考與說明用，並非用來對本創作加以限 市丨j〇 【實施方式】 月i考第四圖，為本創作具輔助繞組之平衡變壓器動 作原理示忍圖。本創作具輔助繞組之平衡變壓器4〇 ^ g I禾才不不），係具有一磁芯401，該磁 二401可作為磁通流通的路徑；在磁芯1上則捲繞有一 第線圈402、一第二線圈404及一輔助線圈406。第一 線圈402與第二線圈4〇4係相互呈反方向捲繞於該磁芯 M275521 上，使得平衡㈣器4G呈加極性變㈣ :通過該二線圈（·、404)之電流〇4ΐ、ί42);衡二 ，助線圈4G6兩端無感應，在電流不平衡時，該辅才 線圈406會感應一電壓差^¥乍 、 人 磁V4D1尨山二V 作為保缦回授訊號使用。 個门字狀磁芯組成或由兩個 成或由一個门字狀與一 I字狀磁芯組成。 清後參考第四圖，當電流ί4” h ;㈣2和第二線圈樹之電流也相等，並貝= 產生的磁動勢也相等，並且相互抵電= : Π Γ無磁通互通。同時，平繼器“ 友門卜-生的漏磁通W、Φ2可以各自經外側的空 路’但是由於空氣間隙的磁阻报高因此此迴 斤7丨致的電感效應一般可以忽略。 第— 丄電流141與電流ί42不相同時，則電流1“在 上所3 生的磁動勢與電流142在第二線圈404 生的磁動勢也不相同，即平衡咖4〇之磁請 芯401 =不相ί ’二者的差值會於平衡變壓器40之磁 後_合;^大里的磁通Φ ’該磁通①切割辅助線圈406 後，=會錢—電壓差Δν，作為保護回授訊號使用。 極螢St電為路tit創 第一線圈402,且一端連卞^於圖°人其卜中’平衡變廢器4〇之 連接到一參考端G。陰之㈣=广_ 端連接於-冷陰極二線圈其一 吕L2，另一鳊透過一電壓檢知器41 M275521 2接到-控㈣43。平衡變壓器4G之該輔助線圈彻， k過一保護電路42連接到該控制器43。同時，該 圈402與該第二線圈4〇4之線圈匝數相同。 、、’M275521 8. Description of the new model: [Technical field to which the new model belongs] This creation is about a balance transformer with auxiliary windings, especially about a transformer used in the driving circuit of a cold cathode fluorescent lamp (CCFL). '[Previous technology] Cold cathode fluorescent lamp (CCFL, Cold Cathode FlU0rescen Lamp) is known to be used as a light source for the shoulder moonlight core (Backlight System) in a liquid crystal display panel (LCD Pane 1). These cold-cathode firefighting officers are driven by a drive circuit called an inverter, which is improved by the technology and consumer demand. The size of LCD panels is constantly increasing, and the lamps can no longer meet their lighting requirements. , So you need to make two or more: ^ g. In order to ensure that the brightness of the LCD panel is uniform, the current of each lamp must be adjusted at any time so that the amount of current flowing through each lamp is equal. However, because the cathode fluorescent lamp system is highly unstable and has negative impedance characteristics, etc., it is difficult to maintain the impedance of the lamp, which causes the impedance of each lamp to change. The currents between the lamps are not equal. In addition to making the lamp's current too large, the lamp's life will be shortened, so that the aging rates between the lamps S are different. In the technology, a plurality of cold-cathode fluorescent lamps have the same brightness. The method is to use a separate drive circuit for each lamp and the current of all lamps can be driven by a common control signal. The conventional technology uses an individual driving circuit to light the circuit structure of the main fluorescent tube, of which two tubes are taken as an example. And & and 2 are respectively driven by circuits 13, 14 and transformers 15, 16 M 5 M275521 = currents η, ί 2 of V n, 12 are fed back to electricity :: current equal effect. However, because of the need to set up for each lamp: one: moving the circuit, this type of circuit + one with a larger one. The ground has "70 pieces of cost, and accounted for: kind, I do n’t need to set more The technology of the drive control circuit is based on the components) to reduce the current difference between the lamps by tL. The second display shows that the known technology uses a single-drive circuit to drive the β cathode fluorescent tube, which uses two lamps as an example. As shown in the figure, the two lamps 21 and 22 are connected in parallel and driven by a circuit 23 and a transformer 25. The high-voltage ends of the two lamps 22 and 22 are respectively connected in series with a capacitor 27 and 28 as a ballast element (BaUast). The two capacitors 27 and 28 have the same impedance, and their impedance values are much larger than the impedances of the lamps f 21 and 22: Foot = the size of the current core flowing through the two lamps 22 and 22 is mainly dominated by the capacitor impedance. That is, even when the impedances of the two lamps 21 and 22 are different, the influence on the difference between the currents hl and L is very slight and can be ignored. Therefore, the two lamp tubes 2 丨 driven by a common high-voltage driving source can be adjusted to have similar current values. However, in order to make the current distribution control more accurate, that is, to make the difference between the currents hl and L as small as possible, this circuit will have to use a high-impedance ballast element, so an abnormally high driving voltage is required. The generation and processing of high driving voltage is very costly and difficult to achieve, so this method has not been widely used. Please refer to the third figure for a circuit diagram of a conventional technique using a differential choke to balance the current of a cold cathode fluorescent lamp. When the currents Isi and & are the same, the currents flowing through the first coil 302 and the second coil 304 are also equal, and the magnetomotive force and current generated by the current IS1 in the first coil 302 and the current in the second coil 304 The generated magnetomotive forces are also equal and cancel each other out, so there is no magnetic flux communication in the differential choke 30. At the same time, the magnetic flux Φb Φ2 generated in the differential choke 30 can complete the loop through the outer air gap, but because of the high magnetic resistance of the air gap, the dipole effect caused by this loop can generally be ignored. When the electric current of the first lamp officer L1 is not the same as the current of the second lamp L2, the magnetomotive force 2 generated by the current I3I on the first wire 302 and the current I32 generated by the second coil 304 The magnetomotive forces are also different, that is, the magnetomotive forces in the differential choke 30 are not the same. The difference between the two will generate a large amount of magnetic flux φ in the dynamic choke 30. This magnetic flux φ cuts the first The coil 3 (^ 2 and the second coil 300) will induce a correction between the ends of the coil 3 and the voltage Δν. This correction voltage will force the current of the first lamp u [and the current I of the second lamp L2 "Return to balance and equality. 31 Di Yubaizhi used differential choke 30 as a balanced cold cathode glory lamp 'still needs to use additional lamp protection at the same time! The protection of the average day! And the voltage detector as the detection coil Up = same as ^, the differential choke 30 passes through the amount of current flowing through the coil = :; 33 to stabilize the current core flowing through the two lamps L1, L2. The circuit 31 is connected to the differential choke 30. On the two coils, the differential expansion method (Q1, Γ, Q3, etc.) can be used as a detection balance. If the current on the 30Ω reaches the specification, if The extremely unusual companion number is given to the control 1133 as an abnormally thin tube current. It is known to use three additional transistor protection circuits 3 l, Q2, ⑽, etc. as the lamp protection ^ 275 M275521 OFF Action. Of course, the lamp camp (Q ^^, ", ^ You Erlu ^ electronic components required for assembly and production", D5 ...) has a large number of components and responsibilities, and [new content] A waste of time and manpower. Transformer 2 = Provides the signal system when the multi-lamps with auxiliary windings are balanced to the signal system when the t is unbalanced or abnormal, and is the same as this creation: 'To achieve an abnormal lamp The protective action of the time. Cathode tube 1 package :: winding balance transformer, which is connected to two cores which are colder than the core and burned-the first phase ^ secret diameter of the core; the first green solid life # coil, One younger two coils and one auxiliary coil; The two cold cathodes are wound in opposite directions. Among them, when passing through, there is no induced electricity at both ends of the auxiliary coil when the power is balanced; two :: unbalanced or When the abnormality occurs, the auxiliary coil will induce the difference-the electric difference can be used as a protection feedback signal. It ’s useful in the art. The review committee can further understand the characteristics and techniques of this creation: Attachment: = read "Detailed descriptions and drawings about this creation, but 'θ ^ is provided for examination and explanation, not for It is used to limit the creation of this creation 丨 j〇 [Embodiment] The fourth picture of the month i test shows the operation principle of the balance transformer with auxiliary winding for this creation. The balance transformer with auxiliary winding for this creation 4〇 ^ g No, no), it has a magnetic core 401, which can be used as a path for magnetic flux to flow; a magnetic core 1 is wound with a first coil 402, a second coil 404, and an auxiliary coil 406. First The coil 402 and the second coil 400 are wound around the magnetic core M275521 in opposite directions, so that the balancer 4G becomes polarized. The current passing through the two coils (·, 404) is 〇4ΐ, ί42) Heng Er, there is no induction at both ends of the auxiliary coil 4G6. When the current is unbalanced, the auxiliary coil 406 will induce a voltage difference. ^ ¥, Human Magnetic V4D1 Sheshan II V is used as a feedback signal. Two gate-shaped magnetic cores or two gate-shaped magnetic cores and one I-shaped magnetic core. With reference to the fourth figure after the Qing Dynasty, when the current ί4 ”h; ㈣2 and the current of the second coil tree are also equal, and the magnetomotive force generated is also equal, and they are mutually counteracted =: Π Γ without magnetic flux intercommunication. At the same time, The flat relay "Youmen Bu-sheng's leakage magnetic fluxes W and Φ2 can respectively pass through the outer air path '. However, due to the high magnetic resistance of the air gap, the inductance effect caused by this return can generally be ignored. No. 时 When the current 141 is not the same as the current ί42, the magnetomotive force generated by the current 1 "3 above and the magnetomotive force generated by the current 142 in the second coil 404 are also different. Core 401 = No phase 'The difference between the two will be combined after the magnetic balance of the balance transformer 40; ^ Dali's magnetic flux Φ' This magnetic flux ① After cutting the auxiliary coil 406, = money-voltage difference Δν as protection The feedback signal is used. The pole fire St Electric creates the first coil 402 for the circuit tit, and one end is connected to the reference terminal G in the figure 'Balance waste changer 40. Yin's ㈣ = wide The _ terminal is connected to one of the two cold-cathode coils, L2, and the other is connected to the -control unit 43 through a voltage detector 41 M275521 2. The auxiliary coil of the balance transformer 4G is completely connected to the protection circuit 42 Controller 43. At the same time, the number of turns of the coil 402 and the second coil 404 is the same.
=考第五圖，當流過燈管U#L2之電流（hi、M 1 =日：’則電☆ l41*第一線圈4Q2上所產生的磁動勢 即：二：在第二線圈404上所產生的磁動勢也不相同， 士弟四圖中，平衡變麼器40之磁芯4G1中的磁動 目=，二者的差值會於平衡變壓器4〇之磁芯仙1中產生 ^置的磁通Φ。該磁通㈣割辅助 =圏樓之兩端感應-電壓差Δν，作為保護 ::電二差μ則會透過該保護電路42被傳送到該‘ 作‘：!“43接收到保護回授訊號後即停止工作， 乍為4官琶沅不平衡或異常時之保護。 墨變為一高頻週期方波，經昇 C2敕―τ升^後產生鬲電壓，高電壓與電容C1、電容 管中燈管L2及平衡變壓器產生諧振。因燈 而=t 電感L2為並聯諧振，其容抗、阻抗不同 =昼.4。。假設平衡變壓器4。的繞組數為二， rLa官的電流為141與142。則根據安培定理（A即ere， 鐵心W，因 ΓίΓ:2，，^ 壓為νΐΐ/Γ 2 42右^% ，/41=/42 ，又N1的端電 K二 ~，. 端電壓 AV2’Fi=I4 ’ U尔雷、::流進等於流出的原理，使燈 _、目同。另D1、D2、Ri為一電壓檢知器41 , M275521 正半週之弦波電遷至脈波寬度調整線路(回授線 、平衡變壓器4〇之辅助繞組406接至D3、R2、 峰值檢知器，檢知„ DC電壓後再與R3、 電晶體Q1的問極端，盆門+曰 土至 -定值 則1㈣須設定低於電壓 ，燈管U、L2其-異常（燈管燒毀、沒接好）時 40之二線圈的制衡關係沒了，會感應-高電屢 組4〇6，此時電晶體Q1的閑-源極端電壓卿 、、电日日體Q1之臨界電屡，所以電晶體qi d-s會導通，將使得控制器43停止動作，達成功= = 之進步性要件，故麦依專 〜甲请，請詳杳並准+太 Τ 兴4 一 准卞本木以保障創作者之權 Γ。右釣局之貴審查委員有任何的稽疑，請不吝來函指 按，以上所述，僅為本創作最佳之具體 創作之特徵並不侷限於此，任何 貞' 、 範圍。 單說明 案::二輕易思及之變化或修飾，皆可涵蓋在以下本 白知技術才木用個別驅動電路夹 岭木·動冷陰極螢光 電路架構； * % 習知技術採用單一驅動電路來 吟水·Ι£動冷陰極營夯 電路架構圖； 4 習知技術採用差動扼流器來 水十衡冷陰極螢光燈 【圖式簡 第一圖為 燈管之 第二圖為 燈管之 第三圖為 11 M275521 管電流之電路架構圖； 第四圖為本創作具輔助繞組之平衡變壓器動作原理示意 圖；及 第五圖為採用本創作平衡變壓器來平衡冷陰極螢光燈管 電流之電路架構圖。 【主要元件符號說明】 習知： ， 燈管1卜12、2卜22、U、L2 電路 13、14、23 變壓器15、16、25 電流 I 1 1、I 12、I 21、I 22、 131 Λ I 32 電容27、28 差動扼流器30 線圈 302、304 保護電路31 電壓檢知器3 2 控制器33 本創作： 平衡變壓器40 磁芯4 01 第一線圈402 第二線圈404 輔助線圈406 電流 I 41、I 42 12 M275521 漏磁通Φ1、Φ 2 電壓差A V 參考端G 電壓檢知器41 保護電路42 控制器43 昇壓變壓器45= Consider the fifth picture, when the current flowing through the lamp tube U # L2 (hi, M 1 = day: 'then electricity ☆ l41 * the magnetomotive force generated on the first coil 4Q2 is: two: on the second coil 404 The generated magnetomotive force is also different. In the four figures of the scholar, the magnetomotive force in the magnetic core 4G1 of the balance transformer 40 =, the difference between the two will be in the magnetic core fairy 1 of the balance transformer 40. Generates a set magnetic flux Φ. The magnetic flux castration assist = the induction-voltage difference Δν at both ends of the tower, as protection :: the electric difference μ will be transmitted to the 'work' through the protection circuit 42 :! "43 After the protection feedback signal is received, it stops working. At first, it is the protection when the 4 guanpa is unbalanced or abnormal. The ink changes into a high-frequency periodic square wave, which generates 鬲 voltage after C2 敕 -τ rise ^. The high voltage resonates with the capacitor C1, the lamp tube L2 in the capacitor tube, and the balance transformer. Due to the lamp, the inductance L2 is a parallel resonance, and its capacitive reactance and impedance are different = day. 4. Assume that the number of windings of the balance transformer 4. Second, rLa's current is 141 and 142. According to Ampere's theorem (A is ere, iron core W, because ΓίΓ: 2, ^ pressure is νΐΐ / Γ 2 42 right ^%, / 41 = / 42, and The terminal voltage K2 of N1 ~ ,. The terminal voltage AV2'Fi = I4 'U Erlei, :: the principle of inflow equals to outflow, so that the lamp _, the same purpose. Another D1, D2, Ri is a voltage detector 41 , M275521 The positive half-cycle sine wave is relocated to the pulse width adjustment circuit (feedback line, auxiliary winding 406 of the balance transformer 40 is connected to D3, R2, peak detector, and „DC voltage is detected and then communicated with R3, If the transistor Q1 is extreme, the pot door + soil to-set the value to 1. It must be set lower than the voltage. When the lamp U, L2 is abnormal (the lamp is burned, not connected properly), the balance of 40 is not relevant. Now, it will induce the high-voltage repeater group 406. At this time, the free-source extreme voltage of transistor Q1, and the critical voltage of the electric sun-body Q1, so the transistor qi ds will be turned on, which will make the controller 43 Stop action and achieve success = = Progressive requirements, so Mai Yizhuan ~ A please, please refer to the details + Τ Τ44 卞 卞 Motoki to protect the creator's rights The skepticism of the letter, please refer to the letter, according to the above, the characteristics of the specific creation that is only the best of this creation are not limited to this, any zhen ', scope Single explanation :: The changes or modifications that can be easily considered can be covered in the following white paper. Individual driving circuits are used in this technology. Ridge wood · moving cold cathode fluorescent circuit architecture; *% The conventional technology uses a single driving circuit. Laiyin Shui · 1 £ The circuit diagram of the dynamic cold cathode rammer circuit; 4 The conventional technology uses a differential choke to water the ten-balance cold cathode fluorescent lamp [Schematic diagram. The first picture is the lamp and the second picture is the lamp. The third picture of the tube is the circuit structure diagram of the 11 M275521 tube current; the fourth picture is the schematic diagram of the operation principle of the balance transformer with auxiliary windings; and the fifth picture is the use of the balance transformer to balance the current of the cold cathode fluorescent lamp Circuit architecture diagram. [Description of the main component symbols] Known:, Lamps 1-12, 2-22, U, L2 Circuits 13, 14, 23 Transformers 15, 16, 25 Current I 1 1, I 12, I 21, I 22, 131 Λ I 32 Capacitor 27, 28 Differential choke 30 Coil 302, 304 Protection circuit 31 Voltage detector 3 2 Controller 33 Original creation: Balancing transformer 40 Core 4 01 First coil 402 Second coil 404 Auxiliary coil 406 Current I 41, I 42 12 M275521 leakage magnetic flux Φ1, Φ 2 Voltage difference AV Reference terminal G Voltage detector 41 Protection circuit 42 Controller 43 Booster transformer 45
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