M3 08423 八、新型說明： 【新型所屬之技術領域】 本創作係關於一種隔離式變壓器，尤指一種用於背光 模組驅動電路之隔離式變壓器。 【先前技術】 近年來，液晶顯示器（LCD)正成為電視的主流顯示 技術。一般用於LCD電視之LCD面板實際上係一電子控 制的光閘，需要有背光源產生之光線方能顯示可視影像， 目刖LCD電視最常用以冷陰極螢光燈（⑶d Cath〇de 册刪咖Lamp，CCFL)作為其背光源，主要原因在於盆他 背光技術製作背光源時成本過高，例如發光二極體。 -般CCFL是一種長而細的密封玻璃管，玻璃管兩p 分設有兩電極，破殖其&壯+ + 而 破璃官内裝有惰性氣體和水銀分子，主 係於兩電極處送人古网、 m , 要 处k入呵壓，同時並減低玻璃管内之氣壓，人 水銀分子產生紫外綠古、击帝 々 y ’ 、7同、电子，而與玻璃管内氣體分子式 原子衝擊，將氣濟八工、紅& 于或 肘轧版刀子激發至高能階不穩 氣體分子返回安定妝能〇士 1 心 晏該 疋狀心4，過剩的能量將以紫外光 放出，紫外光照射到玻璁$ 0形式 、 所塗佈的螢光材料上，使* 光材料激發而發出可見光。 使赏 現今一般背光源的動 _ ^ χ 包路係如弟四圖所示，一M3 08423 VIII. New description: [New technical field] This creation is about an isolated transformer, especially an isolated transformer used in the backlight module drive circuit. [Prior Art] In recent years, liquid crystal displays (LCDs) are becoming mainstream display technologies for televisions. The LCD panel generally used for LCD TVs is actually an electronically controlled shutter. It needs to have the light generated by the backlight to display the visible image. The most commonly used LCD TVs are cold cathode fluorescent lamps ((3)d Cath〇de The main reason for the use of the Lamp Lamp, CCFL, is that the cost of the backlight is very high, such as a light-emitting diode. - The CCFL is a long and thin sealed glass tube. The glass tube has two electrodes at two points, which are used to destroy the & strong + + and the glass is filled with inert gas and mercury molecules, mainly at the two electrodes. Send the ancient network, m, to be k into the pressure, while reducing the pressure inside the glass tube, the human mercury molecules produce ultraviolet green ancient, hit the emperor 々 y ', 7 with, electrons, and the atomic impact of the gas molecule in the glass tube, Exciting the gas, the red & or the elbow plate knife to the high energy level unstable gas molecules to return to the stable makeup can be gentleman 1 heart 晏 heart shape 4, excess energy will be emitted by ultraviolet light, ultraviolet light On the coated phosphor material in the form of glass 0 0, the *-light material is excited to emit visible light. To make the current general backlight movement _ ^ 包 Bao Road is as shown in the fourth picture, one
(3 0 )連接於一升麼變屬… FL 次側之其中一浐、，七 ° ( 4 〇 ) 一 -人側的兩端，二(3 0 ) is connected to a liter of a genus... one of the FL secondary sides, seven degrees ( 4 〇 ) one - the two sides of the human side, two
θ/、 而亚連接至地端，因此CCFL ( 3 CM 之電壓係一高一低，去 〇 )兩端 輸入後，即被驅動點古 3 〇 )獲侍向壓高頻電源 動點冗。惟於實際應用中，該ccfl M308423 〇 )與罩設於背光源上的金屬燈罩（5 Ο )之間會等效形 成有複數個雜散電容（Cl )〜（Cn )，造成CCFL ( 3 0 ) 上不同位置處具有不.同壓降（V?)〜（vn )分矿，其關係 如此一來，對應流經該等雜散 為 V】>V2>V3> . · · >v ν η 〜^ 是 ΐρΐρΐρ - · · 電谷（C】）〜（Cn )電流（I】）〜（In )關係將 >In;由於雜散電容（C】）〜（cn)的效應而導致CCFL( 由 〇 )兩端電流（ΙΐΝ) (Ι〇υτ)大小不相同（Iin〉i〇ut) 。w 於CCFL ( 3 〇 )内的氣體分子會聚集在玻璃管輸入電流 車乂大之一端’因而造成不可逆轉的光梯度，使CCFL ( 3 〇 )兩纟而的免度不平均，甚至會影響CCFL ( 3 0 )之使 用可°卩，因此目前CCFL驅動電路於應用上，仍有相當多 缺點待克服。 【新型内容】 _為角午決習用背光模組驅動電路造成背光模組發光不均 句之問題，本創作之主要目的在提供—種用於背光模組驅 動電路之隔離式變壓器，使背光模組可發出均句的光亮 度。 儿 式變技術手段係令前述隔離 隔離式變壓器包含右 H月先杈組之間’該 又&的巴S有一次側及二次豆 接該電源供應單元， 〃、邊—夂側係連 桩±“ “側係連接背光模組，並包含有 一接地之中央抽頭端。 JL匕3有 利用前述技術手段，由於該二次側 至地端，因此本創# ^ 中央抽頭係連接 口此不刎作之隔離式 一之一次側兩端將輸出 4 M308423 共地之高頻高壓電源予背光模組，令背光模#且兩端產生均 勾的電流，進而可呈現均勻的亮度。 本創作隔離式變廢器之一次财與二次谢分別具有一繞 本創作隔離式變壓器之一次側與二次側分別具有二繞 組或二繞組，當一次側的所有繞組係並聯連接時，二次側 的所有繞組係串聯連接。 【實施方式】 關於本創作用於背光模組驅動電路之隔離式變壓哭的 第二實施例，請參閱第一圖所示，該隔離式變麼器 係-具有接地中央抽頭之變壓器，該變壓器包含有：y . 人側（1 0 1 )’係連接一電源供應單元（2 〇 ) 以取得電源供應單元提供的電源信號； -人调i ϋ 2 )，係具有 ^ Φ ^ ^ ^ ------ 丫天柚頭端 =兩輸出端分別連接一冷陰極榮光燈（3〇)的兩端 係連接至接地端；如此，該二次側（1〇丨 出次側（1 0 1)的交流電源並予以卿， 至4冷陰極螢光燈營f q "光“（3〇)，令該冷陰極螢光燈管（ 而獲得相同高電位的電源信號。、 =第—實施例中，由於該變麼器二 之中央抽頭係連接地端，因此二 端係輪屮(1〇2)之兩輪 、，出八地之南頻高壓電源予冷陰極榮光 如此該冷陰極螢光燈（3 〇 约 ) 電源信號，而令兩端輸入相同的電：均:：相同的高電， J白〕电概，而能均勻發光。 M308423 μ本創作除上述實施例之外，另有下列實⑽’請參閱 第二圖所示’本創作隔離式變壓器（1 0 a )之第二實施 例係由:個子變壓器（TT) ( T2T相互連接所組成，其H 第子交壓器（Τ1 )，係包含有一次側（丄丄 二次側（1 2 )，該一次側（Ί Ί )禕、棗技 _ 一 人w C 1 1 )係連接一電源供應單 凡（2 0 )以取得電源供應單元提供的電源信號，而二次 側（1 2 )的-端連接至該冷陰極螢光燈f (θ /, and the sub-connection to the ground, so CCFL (3 CM voltage is one high and one low, go 〇) after input at both ends, that is, driven to the point 3 〇) to obtain the servo high-frequency power supply. However, in practical applications, the ccfl M308423 〇) and the metal lamp cover (5 Ο ) disposed on the backlight are equivalently formed with a plurality of stray capacitances (Cl ) 〜(Cn ), resulting in CCFL (3 0 There are no different pressure drops (V?)~(vn) in different positions, and the relationship is such that the corresponding spurs are V]>V2>V3>. · >v ν η ~^ is ΐρΐρΐρ - · · electric valley (C)) ~ (Cn) current (I)) ~ (In) relationship will be >In; due to the effect of stray capacitance (C)) ~ (cn) The current (ΙΐΝ) (Ι〇υτ) of CCFL (by 〇) is not the same size (Iin>i〇ut). w The gas molecules in the CCFL (3 〇) will accumulate at the end of the glass tube input current turret', thus causing an irreversible light gradient, making the CCFL (3 〇) two ambiguous and uneven, even affecting The use of CCFL (30) can be used, so there are still many shortcomings to be overcome in the application of CCFL drive circuits. [New content] _ is the problem of the uneven illumination of the backlight module caused by the backlight module driving circuit for the corner afternoon. The main purpose of this creation is to provide an isolated transformer for the backlight module driving circuit, so that the backlight mode The group can emit the brightness of the average sentence. The child-changing technical means is that the above-mentioned isolated and isolated transformer comprises a right-handed first-side and a second bean connected to the power supply unit, and the side-side-side link The pile ± "" side is connected to the backlight module and includes a grounded center tap end. JL匕3 has the above-mentioned technical means. Because of the secondary side to the ground end, the original #^ central tap type connection port does not work. The isolated side of the first side will output 4 M308423. The high-voltage power supply is applied to the backlight module, so that the backlight mode # and both ends generate a uniform current, thereby exhibiting uniform brightness. The first and second sides of the split-type transformer of the present invention have two windings or two windings respectively on the primary side and the secondary side of the isolated transformer, and when all the windings on the primary side are connected in parallel, All windings on the secondary side are connected in series. [Embodiment] With regard to the second embodiment of the isolated variable voltage crying used in the backlight module driving circuit, as shown in the first figure, the isolated transformer is a transformer having a grounded center tap. The transformer includes: y. The human side (1 0 1 )' is connected to a power supply unit (2 〇) to obtain the power signal provided by the power supply unit; - the person adjusts i ϋ 2 ), which has ^ Φ ^ ^ ^ - ----- 丫天柚头端=The two output terminals are respectively connected to a cold cathode glory lamp (3〇) and the two ends are connected to the ground terminal; thus, the secondary side (1〇丨 output secondary side (1 0 1) The AC power supply is given to Qing, to 4 cold cathode fluorescent lamp camp fq " light "(3〇), so that the cold cathode fluorescent tube (and obtain the same high potential power signal., = first - implementation In the example, since the central tap of the changer is connected to the ground end, the two-wheeled rim (1〇2) of the two-wheeled, two-frequency south-frequency high-voltage power supply to the cold cathode glory so that the cold cathode fluorescent Light (3 )) power signal, and input the same power at both ends: both:: the same high power, J white] The M308423 μ creation is in addition to the above embodiment, and the following is the actual (10)'. Please refer to the second figure. The second embodiment of the present isolated transformer (10 a) is composed of: a sub-transformer. (TT) (T2T is connected to each other, and its H-th sub-pressure exchanger (Τ1) contains the primary side (丄丄 secondary side (1 2 ), the primary side (Ί Ί ) 祎, jujube skill _ one person w C 1 1 ) is connected to a power supply unit (2 0 ) to obtain a power supply signal provided by the power supply unit, and the end of the secondary side (1 2 ) is connected to the cold cathode fluorescent lamp f (
端； J 一第二子變壓哭广 口口 （ T2 )，係包含有一次側（丄 二次側（1 4 )，兮 Λ . 的一次側（11)=次側（13)係與第一子變厂堅器（丁υ 亚私，同樣連接至電源供應單元彳 而第二子變壓哭Γ to、t 干 σ ( 2)與第一子變壓器（τ 4 ) ( 1 2 )係串聯诖垃曰 的一-人側（1 側（1 4 )—端Μ兮笛1 义土。》(Τ2)的二次 、 /、4乐—子變壓器（T1)二次側 的另端連接，而第二子變壓器（T2) 螢光燈管（3 〇 ) M s 而貝J人该冷陰極 (川⑼二:欠:另，連接；又，第-/第二子變壓器 至接地端。 12) (14)的串聯節點係連接 由上述說明可知 該兩子變壓器（Tl)只知例的變壓裔（10〇係由 (T2)的一次側（]])組成，其中兩子編（τυ 側（1 2 ) ( 1 4 ) §, ( 1 3 )以亚聯連接，而兩二次 (“）的串聯節=一串：連接，又兩二次側（… 實施例的等效線路印盘接地端’如此-來本 車乂仏戶'施例相同，而同樣提供 6 M308423 該冷陰極餐光燈管（30)一共地高頻高壓 又請關第三圖所示，本創作之第、。 ◦ C )係包含有： 、"^例遵壓器（i …-第-子變壓器（T1)，係包含有— —人側（1 2 ) ’該"'次側（1 1 )係連接―1 1 )及 -(20)以取得電源供應單元 ：源供應單 側（1 2 )的一 i山、4 电原k號，而二戈 ^ s而連接至該冷陰極螢光燈管fq _人 端； v d 0 )的_ 一中央抽頭子變壓器（T3)，係包含有 =次側（16)，該一次側（1㈧係與^人第側（15) :(丁1)的-次側（！丄）並聯，而 子變壓 有兩輸出端及-中央抽頭端，其中 ：6)包含 壓器（T1)二次側Γ ] 9 1 】出知係與第一子變 人侧（1 2 )的另端連接， 又 連接至接地端； 中央抽頭端則 一一第二子變壓器（Τ2)，係包含有—次 一次側（1 4 ) # ( 1 3 )及 ό, Λ 4 )，该—次側（13)係與第一子變屙哭r 的一次伽f 1 1、、， 夂乂土态（T1 ) 而Μ 1 1 )亚聯，同樣連接至電源供應單元 而弟二子變屢器（Τ2)與中央 20)， 連接，gr7兮 > 夂&杰（T3 )的另令山 ^ 亥罘二變壓器（T2 )的二次側（1 4、一山而 第一子變壓哭（τ 、 山 ）一端與該 的m / )的另'而連接，而第二子變壓器（丁2) 該第-/第二子變…⑴（T2 :!編接，如此 (丁3 ) σσ C ( T2)及中央抽頭子變壓哭 令一次側（1 2 ) ( 1 4 )(工β )卽奉萨、击口口 如上述所述，本實施例得6)即串和連接。 男她例係…弟一戶、施例大致相同，不同之 7 M308423 處在於第二較佳實施例 之心“ 例的第一7第二子變壓器⑺）（T2) 之間進一步連接右一 φ 有 中央抽頭之子變壓器（Τ3 )。由於φ 央抽頭之子變壓哭r Trv _丄 Τ DO ()故有一與接地端連接的令央抽頭 令而’故該接地的中央拙 央抽碩鸲即等效於第二較佳實施例的串 %郎點接地端，而能祖# ^ 1、共地的高頻高壓電源予該冷陰極 螢光燈管（3 0 )。J; a second sub-variable crying mouth (T2), which includes the primary side (丄 secondary side (1 4 ), 一次. The primary side (11) = secondary side (13) system and A sub-changer (Ding Yi Ya private, also connected to the power supply unit 彳 and the second sub-pressure squeezing to, t dry σ ( 2) and the first sub-transformer (τ 4 ) ( 1 2 ) series in series一 曰 一 - 人 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 , The second sub-transformer (T2) fluorescent tube (3 〇) M s and the shell J the cold cathode (Chuan (9) two: owed: another, connected; again, the first / second sub-transformer to the ground. 12 (14) The series node connection of the above (14) is known from the above description. The two sub-transformers (Tl) are only known as the transformers (10〇 is composed of the primary side of (T2)), and the two sub-programs (τυ) Side (1 2 ) ( 1 4 ) §, ( 1 3 ) is connected by sub-connection, and two-time (") series of nodes = one string: connection, and two secondary sides (... equivalent circuit of the embodiment The grounding end of the disk is so the same as the one in the car, and the same is provided. M308423 The cold cathode light tube (30) has a total of high frequency and high voltage. Please refer to the third figure. The first part of this creation. ◦ C) contains: , "^examples (i ...- The first-sub-transformer (T1) includes - a human side (1 2 ) 'the '' secondary side (1 1 ) is connected to -1 1 ) and - (20) to obtain a power supply unit: source supply list a side (1 2 ) of an i mountain, 4 electric original k, and two Ge ^ s connected to the cold cathode fluorescent tube fq _ human end; vd 0) _ a central tap sub-transformer (T3), The system includes a sub-side (16), which is connected in parallel with the -sub-side (!) of the first side (15): (D), and the sub-transformation has two outputs and a central Tap end, where: 6) contains the secondary side of the press (T1) 9 9 1 】 is connected to the other end of the first sub-personal side (1 2), and is connected to the ground; the center tap end The first sub-transformer (Τ2) includes the first-time side (1 4 ) # (1 3 ) and ό, Λ 4), and the first-stage (13) system and the first sub-deformed crying r One gamma f 1 1 , , , 夂乂 态 (T1 ) and Μ 1 1 ) Connected to the power supply unit and the second sub-resonator (Τ2) and the central 20), connected, gr7兮>夂& Jie (T3) of the other side of the mountain ^ 罘 two transformer (T2) (1 4, a mountain and the first child transformed pressure crying (τ, mountain) one end connected with the m /) another ', and the second sub-transformer (Ding 2) the first / / second sub-variation ... (1) (T2 :! Coupling, so (Ding 3) σσ C (T2) and the central tap change pressure crying first side (1 2) (1 4) (work β) 卽 卽 、, mouth mouth as described above, this The embodiment gives 6) string and connection. The male and her family are the same, and the application is roughly the same. The different 7 M308423 is in the heart of the second preferred embodiment. The first 7th second transformer (7) of the example (T2) is further connected to the right φ. There is a central tapped transformer (Τ3). Since the φ central tapper is under pressure, crying r Trv _丄Τ DO (), there is a central tap connected to the ground terminal, so the central 拙 抽 抽 接地The utility model is effective for the string source of the second preferred embodiment, and the high-frequency high-voltage power source of the common ground is applied to the cold cathode fluorescent lamp (30).
^ ^ 本創作利用一個具有接地中央抽頭的子 以器或複數個子變屋器以串並聯連接方式組成一具有接 ^中央抽頭的變壓器，！I此輸出共地之高頻高麼電源予燈 b ’因此可令燈管發出均勻的光線；&外，當二次側的中 =抽頭接地後’二次側兩輸出端的電壓值只有第四圖中變 壓器二次側高電壓處電壓值之一[如此較低的電壓值可 避免變壓器因處於持續高壓狀態下運作而損壞。 、、’τ'上所述，本創作實為一極具進步性與實用性之佳 作，且未見於刊物或公開使用，符合新型專利之申請要件， 爰依法提出申請。 【圖式簡單說明】 第一圖··係本創作之第一實施例的等效電路圖。 第二圖··係本創作之第二實施例的等效電路圖。 第三圖：係本創作之第三實施例的等效電路圖。 第四圖：係習用背光源之驅動電路的等效電路圖。 【主要元件符號說明】 (10) (l〇a) (l〇b)隔離式變塵器 (1 0 1 ) —次側 （1 0 2 )二次側 8 M308423^ ^ This creation uses a sub-conductor with a grounded center tap or a plurality of sub-variables to form a transformer with a central tap in series and parallel connection! I output the high frequency of the ground high, the power supply to the lamp b 'thus can make the lamp emit a uniform light; &, when the secondary side of the middle = the tap is grounded, the voltage value of the secondary output is only the first One of the voltage values at the secondary high voltage of the transformer in the four figures [such a lower voltage value can prevent the transformer from being damaged due to continuous high pressure operation. As stated on the 'τ', this creation is a highly progressive and practical work, and it has not been found in publications or publicly used, and it meets the requirements for new patent applications. BRIEF DESCRIPTION OF THE DRAWINGS The first figure is an equivalent circuit diagram of the first embodiment of the present invention. The second figure is an equivalent circuit diagram of the second embodiment of the present creation. Third figure: an equivalent circuit diagram of the third embodiment of the present creation. The fourth figure is an equivalent circuit diagram of the driving circuit of the conventional backlight. [Explanation of main component symbols] (10) (l〇a) (l〇b) Isolated dust filter (1 0 1 ) - secondary side (1 0 2 ) secondary side 8 M308423
(11) (13)(15)—次側 (12) (14) (16)二次側 (2 0 )電源供應單元（3 σ)冷陰極螢光燈 (4 0 )升壓變壓器 (4 1 ) 一次侧 （4 2 )二次側 (50)金屬燈罩 9(11) (13) (15) - secondary side (12) (14) (16) secondary side (2 0) power supply unit (3 σ) cold cathode fluorescent lamp (40) step-up transformer (4 1 ) Primary side (4 2 ) secondary side (50) metal lampshade 9