201114328 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種光源裝置，透過負電壓源與變壓器 設計’來提高光源裝置之轉換效率與發光單元數量。 【先前技術】 一般的光源裝置通常具有單一個控制單元，並在單一 個控制單元的情況下，用以控制單一組發光單元，使發光 單元產生光源，換言之，此種光源裝置只能操作一組 gg ° 早兀。 故為了使用上的需求’欲同時操作多組發光裝置，_ 般做法是相對應地增加控制單元的數量，讓控制單元的數 目與發光單元之组數相同，使一個控制單元能對應控制一 組發光單元；但如此-來，不僅大幅增加電路面積的使 :^體積增大的情況下，亦造成使用者不便利，同時也 會&南生產成本。 此外’ -般的光源裝置通常在提供電源至 時’會產生轉換效率不佳而造成不必要的功率消耗。 【發明内容】 本發明之目的之一，是在 個控制單元控制多組發光 因此，為了解決上述問題， 提供一種光源裝置，可利用單一 單元。 本發明之目201114328 VI. Description of the Invention: [Technical Field] The present invention relates to a light source device that transmits a negative voltage source and a transformer design to improve the conversion efficiency of the light source device and the number of light-emitting units. [Prior Art] A general light source device usually has a single control unit, and in the case of a single control unit, is used to control a single group of light-emitting units, so that the light-emitting unit generates a light source. In other words, the light source device can only operate one set. Gg ° early. Therefore, in order to use the demand "to operate multiple sets of illuminators at the same time, the general practice is to increase the number of control units correspondingly, so that the number of control units is the same as the number of groups of illuminating units, so that one control unit can control a group accordingly. The light-emitting unit; however, not only greatly increases the circuit area, but also increases the size of the device, which also causes inconvenience to the user, and also causes the production cost in the south. In addition, the general-purpose light source device usually produces poor power conversion when power supply is supplied, resulting in unnecessary power consumption. SUMMARY OF THE INVENTION One of the objects of the present invention is to control a plurality of sets of illumination in a plurality of control units. Therefore, in order to solve the above problems, a light source device is provided, which can utilize a single unit. The object of the invention
是在提供一種光源裝置，可減少 201114328 電路面積。 本發明之目的之一，是在提供—種光源裝置，可節省 生產成本。 本發明之目的之一，是在提供一種光源裝置，可提升 光源裝置之轉換效率。 本發明之一實施例提供了一種一種光源裝置，包含一 直流電壓源、一負電壓源、以及一發光單元。發光單元包 含有複數個串聯之發光二極體，發光單元之陽極耦接直流 電壓源，陰極耦接負電壓源。其中，直流電壓源提供一正 電壓，負電壓源係提供一負電壓，光源裝置利用正電壓與 負電壓之一電壓差，以提升光源裝置之整體效率。 本發明之一實施例一種光源裝置，包含一直流電壓 源、一負電壓源、以及一發光單元。負電壓源，包含一控 制單元、一脈波寬度調變單元（Pulse Width M〇dulati〇n， PWM)、一變壓器、以及一整流單元。控制單元產生一 控制訊號。脈波寬度調變單元，耦接至控制單元，依據控 制訊號以輸出一脈寬訊號；變壓器一次側耦接至脈波寬度 調變單元，並搞合脈寬訊號至二次側，以產生一耗合訊 號；整流單元’耦接至變壓器之二次側，用以將耦合訊號 進行整流以輸出一負電壓。發光單元，為包含有複數個串 聯之發光二極體，發光單元之陽極耦接直流電壓源，陰極 耦接負電壓源之負電壓，發光單元係用以產生光線。其 中，直流電壓源提供一正電壓，負電壓源係提供一負電 壓，光源裝置利用正電壓與負電壓之一電壓差，以提升光 201114328 源裝置之整體效率。 本發明係利用變壓器的 控制多組發光單元，改善單 光早元之問題，並利用正電 升光源裝置之整體效率。。 方式，使單一控制單元能同時 一控制單元只能控制單一組發 壓與負電壓之一電壓差，以提 【實施方式】It is providing a light source device that can reduce the circuit area of 201114328. One of the objects of the present invention is to provide a light source device that can save production costs. SUMMARY OF THE INVENTION One object of the present invention is to provide a light source device which can improve the conversion efficiency of a light source device. An embodiment of the present invention provides a light source device including a DC voltage source, a negative voltage source, and a light emitting unit. The light-emitting unit comprises a plurality of light-emitting diodes connected in series, the anode of the light-emitting unit is coupled to the DC voltage source, and the cathode is coupled to the negative voltage source. Wherein, the DC voltage source provides a positive voltage, the negative voltage source provides a negative voltage, and the light source device utilizes a voltage difference between the positive voltage and the negative voltage to improve the overall efficiency of the light source device. An embodiment of the invention provides a light source device comprising a DC voltage source, a negative voltage source, and a light emitting unit. The negative voltage source comprises a control unit, a pulse width modulation unit (Pulse Width M〇dulati〇n, PWM), a transformer, and a rectifying unit. The control unit generates a control signal. The pulse width modulation unit is coupled to the control unit to output a pulse width signal according to the control signal; the primary side of the transformer is coupled to the pulse width modulation unit, and the pulse width signal is coupled to the secondary side to generate a The rectifying unit is coupled to the secondary side of the transformer for rectifying the coupling signal to output a negative voltage. The illuminating unit is configured to include a plurality of serially connected illuminating diodes. The anode of the illuminating unit is coupled to the DC voltage source, the cathode is coupled to the negative voltage of the negative voltage source, and the illuminating unit is configured to generate light. The DC voltage source provides a positive voltage, the negative voltage source provides a negative voltage, and the light source device utilizes a voltage difference between the positive voltage and the negative voltage to increase the overall efficiency of the light source device. The present invention utilizes a transformer to control multiple sets of illumination units to improve the problem of single-light early elements and to utilize the overall efficiency of the positive-elevation source device. . In a manner, a single control unit can simultaneously control only one voltage difference between a single group of voltages and a negative voltage, and the control unit can be controlled.
首先，請參閱第i圖，第！圖顯示本發明光源裝置— 實施例之示意圖，光源裝置100具有—直流電壓源m、_ 負電麗源D2、以及一發光單元1〇。1击 几平兀10。其中，直流電壓源D1 知供一正電壓，負電壓源D2係提供一負電壓。 發光單元10為複數個發光二極體l〇a所串聯成，發光 早凡1〇陽極耦接至直流電壓源D1，陰極耦接至負電壓源 D2 ’使光源裝置100形成一迴路，並利用正電壓與負電壓 之電壓差，以提升光源裝置1〇〇之整體效率。 在一實施例中，負電壓源D2為一可調整負電壓源， 可依據光源裝置100之串聯發光二極體1〇a之數量，調整 輸出之負電壓值。 由本實施例可以了解，由於負電壓源D2之功率消耗 相當的小，且能夠提供一負電壓給發光單元10，因此，發 光單元10兩端之電壓差變得較大。如此一來，可使得直 流電壓源D1所提供至發光單元1〇之效率變高。 明參閱第2圖，第2圖顯示本發明光源裝置一實施例 之不意圖，光源裝置200具有一直流電壓源D卜一負電壓 201114328 源D2、以及一發光單元ι〇。 發光單元10為複數個發光二極體i〇a所串聯成，發光 單元10之陽極耦接至直流電壓源D1，陰極耦接至負電壓 源D2，且負電壓源D2辆接至發光單元1〇之陽極，使光 源裝置200形成一迴路’並利用正電壓與負電壓之電壓 差’以提升光源裝置200之整體效率。 負電壓源D2更包含一控制單元2〇1、一脈波寬度調變 單元（Pulse Width Modulation，PWM)202、一組變壓器 203、以及一整流單元204。控制單元201與脈波寬度調變 單元202耦接，並產生一控制訊號cs ;脈波寬度調變單元 2〇2接收控制訊號CS，並依據控制訊號cs以輸出一脈寬 訊號psi。此外，脈波寬度調變單元2〇2亦接收直流電壓 源D1所提供之正電壓進行操作。 變壓器203之一次側線圈耦接脈波寬度調變單元 202 ’並將脈寬訊號PS1耦合至變壓器2〇3之二次側線圈’ 並產生一耦合訊號PS2。 整流單兀204包含一整流二極體2〇4a與一電容c，整 流二極體204a陰極耦接至二次側線圈之一端，整流二極體 204a陽極耦接至發光單元1〇之陰極。電容c 一端耦接該 整流一極體204a之陰極，另一端耦接一地電位G。當整流 單兀204接收耦合訊號PS2,並對耦合訊號ps2進行整流， 使形成負電壓，並輸出負電壓以驅動發光二極體 在一實施例中，控制單元201係依據光源裝置2〇〇之 串聯發光二極體l〇a之數量，產生控制訊號cs以調整脈 201114328 1寬度調變單元202輸出之脈寬訊號psi，進而調整負電 奐α之，負電壓源D2為一可變負電壓源，能有 提升光源農置200之整體效率。 有政 ，一實施例中，脈寬訊號psi與耦合訊號PS2為一交 气s號負電壓源D2為一直流訊號，控制單元2〇 i — 方波控制器》 在本實施例中，直流電壓源' D1所輸出之大部分功率 不用㈣°換言之’大部分功率係供應給發光單元10,只 有小部分的功率供應給負電壓源D2，因此，本發明可達到 僅犧牲小部分之功率以換取較大之轉換效率。 π參閱苐3圖，第3圖顯示本發明光源裝置一實施例 之示意圖，光源裝置300與光源裝置2〇〇差異在於，光源 裝置300有\組變壓器3〇3’變壓器3〇3之一次側線圈具 有Ν個串聯子線圈，相對應地，變壓器3〇3之二次侧線圈 具有Ν。個子線圈，故光源裝置3〇〇之負電愿源具有ν 組整流單凡304，共具有N個整流二極體3〇4&與n個電 容C，故光源裝置300可具有N組發光單元1〇，並使發光 單元1〇產生光線。其申，N為正整數。 凊參閲第4圖’第4圖顯示本發明光源裝置一實施例 之示意圖，光源裝置400具有一直流電壓源D卜一負電壓 源D2、以及兩組發光單元丨〇。 發光單元ίο為複數個發光二極體1〇a所串聯成發光 單元10之陽極耦接至直流電壓源D1，陰極耦接至負電壓 源D2，且負電壓源D2搞接至發光單元1〇之陽極，使光 201114328 源裝置400形成一迴路，並利用正電壓與負電壓之電壓 差，以提升光源裝置400之整體效率。 負電壓源D2更包含一控制單元401、一脈波寬度調變 單元402、一變壓器403、以及二個整流單元404。控制單 元401與脈波寬度調變單元402耦接，並產生一控制訊號 CS至脈波寬度調變單元402;脈波寬度調變單元402接收 控制訊號CS，並依據控制訊號CS以輸出一脈寬訊號PS1 至變壓器403。此外，脈波寬度調變單元402亦接收直流 電壓源D1所提供之正電壓進行操作。 變壓器403之一次側線圈耦接脈波寬度調變單元 402,並將脈寬訊號PS1耦合至變壓器403之二次側線圈， 二次側線圈之兩端分別產生耦合訊號PS2 1與PS22。其中 變壓器403之二次側線圈兩端分別耦接整流單元204。 在本實施例中，光源裝置400具有兩個整流單元404， 分別包含兩個整流二極體404a、404b與一電容C，整流二 極體404a陰極耦接至二次側線圈第一端，整流二極體404a 陽極耦接發光單元1 〇之陰極。電容C 一端耦接整流二極 體4 04a之陰極，另一端耦接一地電位G。整流二極體404b 之陽極，耦接整流二極體404a之陰極與二次側之第一端， 整流二極體404b陰極耦接地電位G。相同地，二次側之第 二端亦耦接整流單元404，其耦接方式與二次側之第一端 相同，在此不再贅述。 當二次侧之第一端輸出耦合訊號PS2 1至整流單元 404,整流單元404接收耦合訊號PS21，並對耦合訊號PS21 201114328 進行整流’使形成第一負電壓，並輸出第一負電壓以驅動 發光二極體10a。相同地，二次側之第二端輸出耦合訊號 PS22至整流單元404，整流單元404接收耦合訊號ps22， 並對耗合訊號PS22進行整流，使形成第二負電壓，並輸 出第二負電壓以驅動發光二極體l〇a。 在一實施例中，控制單元4〇1係依據光源裝置4〇〇之 串聯發光二極體10a之數量，產生控制訊號cs以調整脈 波寬度調變單元402輸出之脈寬訊號PS1，進而調整負電 壓值，換言之，負電壓源D2為一可變負電壓源，能有效 提升光源裝置400之整體效率。 在一實施例中，脈寬訊號PS1與耦合訊號ps2hPS22 為一交流訊號，負電壓源D2為一直流訊號，控制單元2〇1 為一方波控制器。 凊參閱第5圖，第5圖顯示本發明光源裝置一實施例 之示意圖，光源裝置500與光源裝置4〇〇差異在於，變壓 器503之一次側線圈具有M個串聯子線圈，相對應地，變 壓1§ 503之二次側線圈具有M個子線圈，故光源裝置5〇〇 之負電壓源D2具有Μ組整流單元5〇4，共具有2M個整 洲· 一極體204a、2M個整流二極體2〇4b、2M個電容c，故 光源裝置500可具有Μ組發光單元1〇，並使發光單元ι〇 產生光線。其中，Μ為正整數。 本發明係利用變壓器的方式，使單一控制單元能同時 控制多組發光單元，改善單一控制單元只能控制單一組發 光單元之問題，並利用正電壓與負電壓之電壓差，以提升 10 201114328First, please refer to the i-th picture, the first! The figure shows a schematic diagram of an embodiment of a light source device according to the present invention. The light source device 100 has a DC voltage source m, a negative power source D2, and a light emitting unit 1A. 1 hit a few flat 兀 10. Among them, the DC voltage source D1 is known to supply a positive voltage, and the negative voltage source D2 is provided with a negative voltage. The light-emitting unit 10 is connected in series with a plurality of light-emitting diodes 10a, the light-emitting element is firstly coupled to the DC voltage source D1, and the cathode is coupled to the negative voltage source D2' to form a loop of the light source device 100, and utilizes The voltage difference between the positive voltage and the negative voltage is used to improve the overall efficiency of the light source device 1 . In one embodiment, the negative voltage source D2 is an adjustable negative voltage source, and the output negative voltage value can be adjusted according to the number of the series light-emitting diodes 1a of the light source device 100. It can be understood from the present embodiment that since the power consumption of the negative voltage source D2 is relatively small and a negative voltage can be supplied to the light emitting unit 10, the voltage difference across the light emitting unit 10 becomes large. As a result, the efficiency of the DC voltage source D1 supplied to the light-emitting unit 1 can be made high. Referring to Fig. 2, which shows an embodiment of the light source device of the present invention, the light source device 200 has a DC voltage source D, a negative voltage 201114328 source D2, and a light emitting unit ι. The light-emitting unit 10 is connected in series with a plurality of light-emitting diodes i〇a. The anode of the light-emitting unit 10 is coupled to the DC voltage source D1, the cathode is coupled to the negative voltage source D2, and the negative voltage source D2 is coupled to the light-emitting unit 1. The anode of the crucible causes the light source device 200 to form a loop 'and utilizes a voltage difference between a positive voltage and a negative voltage' to enhance the overall efficiency of the light source device 200. The negative voltage source D2 further includes a control unit 2〇1, a Pulse Width Modulation (PWM) 202, a set of transformers 203, and a rectifying unit 204. The control unit 201 is coupled to the pulse width modulation unit 202 and generates a control signal cs; the pulse width modulation unit 2〇2 receives the control signal CS and outputs a pulse width signal psi according to the control signal cs. Further, the pulse width modulation unit 2〇2 also receives a positive voltage supplied from the DC voltage source D1 for operation. The primary side coil of the transformer 203 is coupled to the pulse width modulation unit 202' and couples the pulse width signal PS1 to the secondary side coil ' of the transformer 2〇3 and generates a coupling signal PS2. The rectifying unit 204 includes a rectifying diode 2〇4a and a capacitor c. The cathode of the rectifying diode 204a is coupled to one end of the secondary side coil, and the anode of the rectifying diode 204a is coupled to the cathode of the illuminating unit 1〇. One end of the capacitor c is coupled to the cathode of the rectifying body 204a, and the other end is coupled to a ground potential G. When the rectifying unit 204 receives the coupling signal PS2, and rectifies the coupling signal ps2 to form a negative voltage, and outputs a negative voltage to drive the light emitting diode. In an embodiment, the control unit 201 is configured according to the light source device 2 The number of series LEDs l〇a is generated to generate a control signal cs to adjust the pulse width signal psi output by the pulse modulation unit 201114328 1 width modulation unit 202, thereby adjusting the negative voltage 奂α, and the negative voltage source D2 is a variable negative voltage source. It can improve the overall efficiency of the light source farm 200. In one embodiment, the pulse width signal psi and the coupling signal PS2 are a traffic s number negative voltage source D2 is a direct current signal, and the control unit 2 〇 i — a square wave controller 》 in this embodiment, the DC voltage Most of the power output by the source 'D1 is not used (4). In other words, most of the power is supplied to the light-emitting unit 10, and only a small portion of the power is supplied to the negative voltage source D2. Therefore, the present invention can attain only a small portion of the power in exchange for the power. Large conversion efficiency. π Referring to FIG. 3, FIG. 3 is a schematic view showing an embodiment of the light source device of the present invention. The difference between the light source device 300 and the light source device 2 is that the light source device 300 has the first side of the transformer 3〇3' transformer 3〇3. The coil has a series of sub-coils, and correspondingly, the secondary side coil of the transformer 3〇3 has Ν. The sub-coil, so the negative-power source of the light source device 3 has a ν group rectification unit 304, a total of N rectifying diodes 3〇4& and n capacitors C, so the light source device 300 can have N groups of illumination units 1 〇, and cause the light-emitting unit 1 to generate light. Its application, N is a positive integer. 4 is a schematic view showing an embodiment of a light source device according to the present invention. The light source device 400 has a DC voltage source D, a negative voltage source D2, and two sets of light-emitting units 丨〇. The light-emitting unit ίο is connected to the DC voltage source D1 by the plurality of light-emitting diodes 1A connected to the anode of the light-emitting unit 10, the cathode is coupled to the negative voltage source D2, and the negative voltage source D2 is connected to the light-emitting unit 1 The anode causes the light source 201114328 source device 400 to form a loop and utilizes the voltage difference between the positive voltage and the negative voltage to improve the overall efficiency of the light source device 400. The negative voltage source D2 further includes a control unit 401, a pulse width modulation unit 402, a transformer 403, and two rectifying units 404. The control unit 401 is coupled to the pulse width modulation unit 402 and generates a control signal CS to the pulse width modulation unit 402. The pulse width modulation unit 402 receives the control signal CS and outputs a pulse according to the control signal CS. Wide signal PS1 to transformer 403. In addition, the pulse width modulation unit 402 also receives a positive voltage supplied from the DC voltage source D1 for operation. The primary side coil of the transformer 403 is coupled to the pulse width modulation unit 402, and couples the pulse width signal PS1 to the secondary side coil of the transformer 403. The two ends of the secondary side coil respectively generate coupling signals PS2 1 and PS22. The two ends of the secondary side coil of the transformer 403 are respectively coupled to the rectifying unit 204. In this embodiment, the light source device 400 has two rectifying units 404 respectively including two rectifying diodes 404a and 404b and a capacitor C. The cathode of the rectifying diode 404a is coupled to the first end of the secondary coil, and is rectified. The anode of the diode 404a is coupled to the cathode of the light-emitting unit 1 . One end of the capacitor C is coupled to the cathode of the rectifying diode 04a, and the other end is coupled to a ground potential G. The anode of the rectifying diode 404b is coupled to the cathode of the rectifying diode 404a and the first end of the secondary side, and the cathode of the rectifying diode 404b is coupled to the ground potential G. Similarly, the second end of the secondary side is also coupled to the rectifying unit 404, and the coupling manner is the same as that of the first end of the secondary side, and details are not described herein again. When the first end of the secondary side outputs the coupling signal PS2 1 to the rectifying unit 404, the rectifying unit 404 receives the coupling signal PS21 and rectifies the coupling signal PS21 201114328 to form a first negative voltage, and outputs a first negative voltage to drive Light-emitting diode 10a. Similarly, the second end of the secondary side outputs the coupling signal PS22 to the rectifying unit 404, the rectifying unit 404 receives the coupling signal ps22, rectifies the consuming signal PS22, forms a second negative voltage, and outputs a second negative voltage. Driving the light emitting diode l〇a. In an embodiment, the control unit 4〇1 generates a control signal cs according to the number of the series light-emitting diodes 10a of the light source device 4 to adjust the pulse width signal PS1 output by the pulse width modulation unit 402, thereby adjusting The negative voltage value, in other words, the negative voltage source D2 is a variable negative voltage source, which can effectively improve the overall efficiency of the light source device 400. In one embodiment, the pulse width signal PS1 and the coupling signal ps2hPS22 are an alternating current signal, the negative voltage source D2 is a direct current signal, and the control unit 2〇1 is a square wave controller. Referring to FIG. 5, FIG. 5 is a schematic view showing an embodiment of a light source device according to the present invention. The difference between the light source device 500 and the light source device 4 is that the primary side coil of the transformer 503 has M series sub-coils, correspondingly, The secondary side coil of the pressure 1 § 503 has M sub-coils, so the negative voltage source D2 of the light source device 5 Μ has the 整流 group rectifying unit 5 〇 4, which has 2M whole continents · one pole body 204a, 2M rectifier two Since the polar body 2 〇 4b and 2M capacitors c, the light source device 500 can have the Μ group light-emitting unit 1 〇 and cause the light-emitting unit to generate light. Where Μ is a positive integer. The invention utilizes a transformer method, so that a single control unit can simultaneously control multiple groups of light-emitting units, improve the problem that a single control unit can only control a single group of light-emitting units, and utilize the voltage difference between positive voltage and negative voltage to improve 10 201114328
光源 裝置 之 整體效率。 【圖 式 簡單說明】 第1 圖顯 示 本發明光源裝置一 實 施例 之 示 意 圖。 第2 圖顯 示 本發明光源裝置一 實 施例 之 示 意 圖。 第3 圖顯 示 本發明光源裝置一 實 施例 之 示 意 圖。 第4 圖顯 示 本發明光源裝置一 實 施例 之 示 意 圖。 第5 圖顯 示 本發明光源裝置一 實 施例 之 示 意 圖。 【主 要 元件符號說明】 100、 200 > 300 ' 400 ' 500 光 源裝 置 D1 直 流 電壓源 D2 負 電 壓源 201、 301 401 控制單元 202、 402 脈波寬度調變單元 203、 303 403、503 變壓； 器 10 發: 光單元 10a 發光- 二極體 204 ' 304 > 404整流單元 204a ' 304a 、404a、404b 整流二極體 C 電 容 G 低 電 位 11The overall efficiency of the light source device. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing an embodiment of a light source device of the present invention. Fig. 2 is a view showing an embodiment of a light source device of the present invention. Fig. 3 is a view showing an embodiment of a light source device of the present invention. Fig. 4 is a view showing an embodiment of a light source device of the present invention. Fig. 5 is a view showing an embodiment of a light source device of the present invention. [Main component symbol description] 100, 200 > 300 ' 400 '500 light source device D1 DC voltage source D2 Negative voltage source 201, 301 401 Control unit 202, 402 Pulse width modulation unit 203, 303 403, 503 is transformed; 10: Light unit 10a Illumination - Diode 204 '304 > 404 rectification unit 204a '304a, 404a, 404b Rectifier diode C Capacitor G Low potential 11