TWM441288U - LED driving apparatus - Google Patents

LED driving apparatus Download PDF

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Publication number
TWM441288U
TWM441288U TW101212392U TW101212392U TWM441288U TW M441288 U TWM441288 U TW M441288U TW 101212392 U TW101212392 U TW 101212392U TW 101212392 U TW101212392 U TW 101212392U TW M441288 U TWM441288 U TW M441288U
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Taiwan
Prior art keywords
light
resistor
control unit
emitting diode
diode
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TW101212392U
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Chinese (zh)
Inventor
Hsing-Fu Liu
Yu-Ting Chien
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Macroblock Inc
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Application filed by Macroblock Inc filed Critical Macroblock Inc
Priority to TW101212392U priority Critical patent/TWM441288U/en
Publication of TWM441288U publication Critical patent/TWM441288U/en

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88 五、新型說明: 【新型所屬之技術領域】 -種發光二極體驅練置’特別有關於—種可延遲發光二極 體之光源媳滅時間的發光二極體駆動褒置。 【先前技術】 發光二極體(Light Emitting DiGde,LED)具備有體積小、省 電且耐用料點',並由於發光二極體製程及產量提升,使得成本 曰益降低。因此,發光二極體逐漸成為新—代最具影響力的^源, 其在各種終端設備及照明領域中被廣泛使用。 -般來說,在發光二極體的鶴_中,當電源電壓输提 供時驅動裝置會將電源電壓轉換成驅動電壓,以驅動發光二極 體產生光源。當停止提供電源電壓時,則驅動裝置不會提供驅動 電壓’則發光二極朗立即域。細,停止提供魏電壓而使 得發光二極體之錢立即熄滅,則制者無法於統熄滅後再做 -些簡單的事(例如拿鑰匙等),而降低使用的便利性。 有鑑於此’美國專利號第US7.688008號提出一種照明燈 (LightingLamp),其可於停止供應電源電壓後,藉由驅動計時器 (Timer) (Pulse Width Modulation, PWM) mtM. 生器來驅動發光二極體導通並發光,以延遲發光二極體之光源的 熄滅。然而,刖述專利使用計時器以及脈寬調變訊號產生器,可 能會增加電路設計的複雜额使用成本,因此延遲發光二極體之 光源炮滅的驅動電路,仍有改善的空間。 M441288 【新型内容】 鑒於以上的問題’搞型在於提供—種發光二極體驅動裝 置,藉以當停止供應工作時,部分的發光二極體可持續一段 時間後才德滅,以增加制便利性,並降低電路的設計複雜度及 使用成本。 本新型所揭露之-種發光二極體驅動裝置,適於驅動M個發: 光二極體’此Μ個發光二極體串列以串接,第m個發光二極 體的陰極端耦接接地端’ M為大於j的正整數。此發光二極體驅 ,裝置包括鶴單元、第-:域、魏元件触抗元件。驅動· 單元用以提ϋ動電壓。第—二極體的陽極端接收驅動電壓,第 :二極體的陰極_接第!個發光二極體的陽極端。儲能元件的 ^一端耦接第一二極體的陰極端,儲能元件的第二端輕接接地 端。阻抗S件的第1墟儲能元件的第1,阻抗元件的第二 端減第2〜Μ個發光二紐之陽極端的任一。 ★在-實施例中,前述發光二極體驅練置更包括第一電阻、 第-包阻、第-控制單元與開關單元。第—電阻的 動單元’魏驅動電壓,第一電阻的第二端產侧 一電阻的第一端耦接第一電阻的第二碱,第二電阻的第二端耦接 接地立而。第-控制單元雛第—電阻的第—端,用以接收偵測電 壓’以產生控制訊號。開關單元具有第—端、第二端與第三端, 開關單7L的第-端輪第—二極體的陰極端,開關單元的第二端 轉接第一控解元’叫級控制訊號,_單元的第三端耗接阻 M441288 4几元件的第一端。 在—實施例t,前述發光二極 元。第二控制單元具有第—端、第包括第二控制單 控制單元的第一端耦接驅動單—而而與弟四端,第二 矛而揭接絲早兀,以接收驅動電壓 兀的弟二端耦接第一二極體 一亡制早 ^ 知,第一控制單元的第二端為 接苐一二極體的陰極端,第 幻弟-¾耦 第—端。H制早摘第四喊接阻抗元件的 在-實施射’_第二控卿摘第 接,且第二控制單元包括第二二極體直絲 晶體。笛--日^ 第四電阻與電 且^二極體的陽極端輛接第二控制單元的第—端 :的弟-端耦接第二二極體的陰極端,第三電阻的耦接 地=電阻的第,第三電阻的第一端,的: :爾一元的第三端。電晶體具有第— : :二端二電晶體的第—端-接第四電阻的第-端、電晶體的第 =接弟四電_第二端,電晶體的第三端搞接阻抗元件的第一 在一實施例_,前述電晶體為P型電晶體。 在一實施例t,前述儲能元件為電容。 在一實施例_,前述阻抗元件為電阻。 在-實施例t,前述阻抗元件包括N個電阻。N個電阻 與部分m峨,極體中㈣—個賴接,而第^阻 的第&作為阻k元件的第-端’第N個電阻的第二端作為阻^ ΫΙΗ-Η-ΙΖΟΟ 元件的第二端,其中Ν<Μ。 在只轭例巾,珂述驅動單元為降壓型 型或反驰迦動單元。 本新型所揭露之—種發光二極體驅動裝置,其藉由配置阻抗 场於電容之第_端與第2〜Μ個發光二極體之陽極端的任何一個 :使得當停止提供_壓時,可延遲發光二極體之光源的 价以增力哎_蝴性,並減少電關設計複雜度及使 成本。另外,再搭配第-㈣單元或第二控制單元_區動電 =而據喝以容與阻抗元叙_連接.,使得發光二極體所 產生的免度較為均勻。 有關本新型的特徵與實作,兹配合圖式作實施例詳細說明如 下0 【貫施方式】 將以相同的標號代表相同 在以下所列舉之實施例及圖式中 或相似的元件。 凊荟考「第1圖」所示,其為本新型第一實施例之發光二極 觸裝置的示;|圖。材關之發光二_曝置_適於 驅動發光二鐘15GHM,射M為大於丨紅整數。發光 以串聯織,亦即第i個發光二極體的陰極 而_第】+1個發光二極體的陽極端,其中〇<i^M。 也就是說’第!個發光二極體120J的陰極端_第2個發 先二極體既2的陽極端,第2個發光二極體i2G—2的陰極端輕 M441288 接第3個發光二極體12〇一3的陽極端、…第Μ-l個發光二極體 ojVi-i的陰極端耦接第M個發光二極體的陽極端並 且第1^個發光二極體的陰極端耦接接地端GND。 發光二極體驅動裝置100包括驅動單元110、第一二極體01、 ’::b元件120與阻抗元件130。驅動單元11〇例如接收一電源電壓 -VIN ’亚將電源電壓VIN轉換後,以提供驅動電壓奶。在本實施 •例中’電源麵VIN可駐流電壓或直流·。並且,驅動單元 no可為但不限定為降壓型(Buck)驅動器、升壓型(細贫)驅 動=、升壓姻型(Boost-Buck)驅動器或反馳型(Flyback驅 動:另外’驅動單凡110亦可為直流·直流電源轉換器.、交流_ 直流電源轉換器或電源開關等。又或是、驅動單元別直泣 電壓源或電流源等。 第—極體D1的陽極端接收驅動電壓yj),第一二極體 的陰極端输第i個發光二極體15GJ的陽極端。儲能元 :=端_ —二極體D1的陰極端,儲能树⑽的第二端柄 接接地端伽。在她謝,元件m _但不 電容C。阻抗元件13〇的第-_接儲能树⑽的第一端,阻 杬凡件130的第二端搞接第M個發光二極體⑼—Μ極立山。 上述說明了發光二極體驅動裝置1〇〇之内部元件 而 係。以下,將說明發光二極體驅練置1〇〇的操作。〃接關 首先,例如由-電縣應器提供電源龍购 110,驅動單元⑽將電源賴彻轉換為驅動電壓^2Γ: 7 M441288 此時’由於第一二極細之陽極端的電壓大於其陰極端的電壓, 因而使得第—二極體m導通,則驅動電壓犯輸出至發光二極體 =」的陽極端,致使發光二極體15(〇〜i5〇—m導通並發光。在 ^時’驅動電壓VD亦會對儲能元件12〇的電容c進行充電, 使付儲能元件12〇之電容C產生儲能電壓。 接著,當電源供應器停止提供電源電覆娜時,由於 極體D1之陽極端的電壓 、 二 9狀”陰極糕的電壓,因而使得第- 光 ^ 極體會截止而不發 件130之12G之電容C上的儲能麵,會透過阻抗元 件30之電阻R進行放電,. 發光,直到齡元俾12〇 w 體15〇—M仍持續導通並 b 電合c的儲能電壓放電至低於發光二 極脰150JV[的導通電壓為止。 _、 截止==停止供應電權WN時,發光二極體並不會全部 tr的m物發光二極體仍可藉由舰元㈣之電 滅時間。 《先—極體所產生之光源的熄 為了方便說明,在「第〗图, 第二端耦捲箪M 乂 Θ」中,僅繪示出阻抗元件130的 輕接第Μ個發光二極體15〇 Μ 應停止提供時,f _發先二—私叫,使得工作雜 間後再想、減。但本新型不限於此,;可持續發光一段時 接第2個笋弁-炻锕7 兀件】30的第二端亦可耦 么先一極體150—2的陽極端至 15恤的陽極端的任何—個叫固發光二極體 仍了達到珠述延遲部分發光二極 M441288 體之光源熄滅的相同效果。 請參考「第2圖」所示’其為本新型第二實施例之發光二極 體驅動裝置的示意圖。本實施例之發光二極體驅動裝置2〇〇適於 驅動發光二極體150—1〜150_M,其中M為大於i的正整數。發光 .二極體驅動裝置200包括驅動單元110、第一二極體D1、儲能元 :件120、阻抗元件210。其中,驅動單元110、第一二極體D1 :儲 能元件i20、與發光二極體150J〜150—M的她關係與其相應操 作可茶考「第1圖」之實施例的說明,故在此不再贅述。 在本實施例令,阻抗元件210包括N個電阻RJ〜 電阻分別與部分個發光二極體的至少一個編耦 接’而第1個電阻RJ的第一端作為阻抗元件21〇的第一端:第 N個電阻R_N的第二端作為阻抗元件21〇的第二端,且n<m。 舉例來說’第1個電阻Rj㈣—端祕發光二極體i5〇 ! •的陽極端,第1個電阻RJ的第二_接發光二極體⑸i的陰 極端,亦即第i個電阻R1與發光二極體15〇—2並聯連接;第2個 電阻R—2的第-端耗接發光二極體15()—3的陽極端,第2個電阻 、—2第—_接發光二極體15{)—4的陰極端,亦即第2個電阻 R—2的第二端與發光二極體150一3和150—4並聯連接。 、’、餘第3個電阻R」至第N個發光二極^R_N與發光二極體 =p輕翻可辦别述綱,故在此不再贅述,*電阻〜r—n 、[、电光—極體並聯連接的數量可依使用者視需求自行調整。 並且,每-個電阻之間會間隔至少―發光二極體,而間隔之發光 M441288 二的數量可依賴者視需求自行輕,例如第1個電阻R i 與第2個2之間間隔發光二極體⑼—2,其餘則。 .首先’例如由一電源供應器提供電源、電壓VIN、給驅動單元 110 ’驅動單元110將電源電壓v_換為驅動電壓11〇後輸出。 此時,由於第-二極體D1之陽極端的電壓大於其陰極端的電壓, 因而使得第-二極體m導通,則驅動電請輸出至發光二極體 15〇 一 1的陽極端,致使發光二極體15〇j〜i5〇—m導通並發光。在 此_ ’驅動電壓vd亦會對元件12〇的電容c進行充電, 使得儲能元件120之電容C產生儲能電壓。 接著’虽電源供應|§停止提供電源電愿VIN時,由於第—二 極體之陽極端的電壓不會大於其陰極端的電壓,因而使得第: :極體m截止’靖㈣體15Q」吸m會截止而不發 此時’儲能①件⑽之電容c上的職電壓,會透過阻抗元 _之電阻R上R—N所產生的一放電路徑進行放電,使得發光 ^體150—M以及未與電阻幻〜纽並聯連接之發光二極體仍持 =^亚發光,細魏树12Q之電容c _議放電至低 "冬光—極體150一M的導通電壓為止。 藉此,當停止供應電源賴聰時,發光二極體並不會全部 t而不發光,而部分的發光二極體仍可藉由儲能元件⑽之電 儲能觸續發光,以延遲發光二極體所產生之光源的媳 實施例之發光二極 請參考「第3圖」·,其為本新型第 Μ斗 一 °動裝置的示意圖。本實施例之發光二極體驅動装置3⑻適於 驅動發光—極體⑼―丨〜既M,其中Μ為大於丨的正整數。發光 極體驅動裝置3GG包括驅動單元110、第-二極體D卜儲能元 件120阻抗兀件13〇、第一電阻r卜第二電阻幻、第一控制單 =〇與開關單元32Q。其中,驅動單元η〇、第—二極體以、 ,/元件12〇、阻抗元件削與發光二極體⑼―Η%—Μ的搞接 關係與其相應操作可參考「第1圖」之實施例的說明,故在此不 再贅述。 在本實施例中,第—電阻R1的第-端粞接驅動單元10V以 接收驅動電壓VD,第一電阻幻的第二端產生偵測電壓。^電 阻把的第—端麵接第—電阻R1的第二端,第二電阻扣^: 端耗接接地端(3凡Q。 雷渾第二:單元:1。綱一電阻R1的第一端’用以接收偵測 1 控制單兀31Q據以產生控制訊號。開關單元320具 有弟-端、第二端與第三端,開關單元320的第一端耦接第—二 極體D1的陰極端’開關單元320的第二端輕接第-控制單 310 ’以接收控制訊號,開關單元挪的第三端_且抗元件13 一端;其中,開關單元32。依據猶 開弟--極體m的陰極端與阻抗元件⑽的第—端之間的 當電源供應ϋ提供電源遞時,驅動單元⑽ 電壓viN轉換為驅動電壓VD並輸出。此時,由於第—二鄉= 德極端的電壓大於其陰極端的電壓,㈣__二極體叫 M441288 導通’則驅動電壓VD輸出至發光二極體150—ι的陽極端,致使 發光二極體15〇_1〜150_M導通並發光。並且,驅動電壓^亦會 對儲能元件120的電容C進行充電,使得儲能元件12〇之電容c 產生儲能電壓。 此時,藉由第一電阻R1與第二電阻R2分壓,使得第二電阻 R2的第一端產生例如高邏輯準位的偵測電壓(即第二電阻上 的壓降)’則第-控制單元則對應產生例如低邏輯準位的控制訊 號給開關單元320,以致使開關單元32〇斷開第一二極體m的陰 極端與阻抗元件130的第一端之間的連接,因此所有發光二極體 15(U〜150_M會具有相同的驅動電流,而使得發光二極體 150_1〜15〇_M的亮度較為均勻。 另一方面’當電源供應器停止提供電源電壓聰時,則驅動 單元⑽不會產生驅動電壓VO。此時,第二電阻把的第二端產 生例如低邏解位的侧電壓,則第一控制單元31〇對库產生例 如高邏輯準位的控制訊號給開關單元320,以致使開關單元32〇 導通第-二極體m的陰極端與阻抗元件13G的第—端之間的連 接,進而產生一導通路徑。 接著儲月b兀件120之電容c上的錯能電麼,會透過阻抗元 件紙電阻R進行放電,使得發光二極體i5〇 Μ仍持續導通並 發光,直_树12G之電容C __放電至低於發光二 極體150_M的導通電壓為止。 藉此’當停止供應魏轉彻時,發光二極體並不會全部 12 M441288 截止而不發光,而部分的發光二極體仍可藉由儲能元件120之電 容C的儲能電餅續發光,以延遲發光二極體所產生之光源的燒 滅時間。 5月參考「第4圖」所示,其為本新型第四,實施例之發光二極 體驅動裝·示意I本實施例之發光二極體驅動裝置適於 驅動發光二極體15(U〜150JM,其中M $大於i的正整數。發光 二極體驅動裝置働包括驅動單元ιι〇、第一二極體Μ、儲能元 件120阻抗兀件130與第二控制單元仙。其中,驅動單元I】。、 第一二極體D1、儲能元件12〇、阻抗元件13〇與發光二益體 15〇一1〜150JVI的搞接關係與其相應操作可參考「第i圖」g實施 例的說明,故在此不再贅述。 :… 在本實施僧,第二控制單元41〇具有第一端411、第二端 412、第三端413與第四端414,第二控制單元4K)的第-端411 接收驅動電壓VD,第二控制單元41〇的第二端412祕第一二極 •雜m的陽極端,第二控制單元41〇的第三端413墟第一二極體 pi的陰極端,第二控制單元41〇的第四端414細且抗元件⑽ 的第一端。 當電源供絲提供電源電壓VIN時,鶴_ 會將電源 電壓職轉換為驅動電壓VD並輸出。此時,第二控制單元仙 έ方”、第& 411與第—端412提供第一導電路徑,使得驅動 廖VD經由第二控制單元 J平兀41〇的弟一端411與第二端412、第一二 極體D1輸出至第1個發光二極體…的陽極端,進而使得發光 M441288 二極體150_1〜150_Μ導通並發光 儲能元件120之電容C進行充電, 生儲能電壓。 並且,驅動電壓VD會同時對 以使儲能元件12〇之電容c產88 V. New description: [New technical field] - A kind of illuminating diode erecting device is specially related to a kind of illuminating diode erecting device which can delay the light source annihilation time of the illuminating diode. [Prior Art] Light Emitting DiGde (LED) has a small size, power saving and durable material point, and the cost is reduced due to the luminous diode process and output increase. Therefore, the light-emitting diode has gradually become the most influential source of the new generation, and it is widely used in various terminal equipment and lighting fields. In general, in the crane _ of the light-emitting diode, when the power supply voltage is supplied, the driving device converts the power supply voltage into a driving voltage to drive the light-emitting diode to generate the light source. When the supply voltage is stopped, the drive unit does not provide the drive voltage'. Fine, stop providing the Wei voltage so that the money of the light-emitting diode is immediately extinguished, and the maker can not do it after the system is extinguished - some simple things (such as taking a key, etc.), and the convenience of use is reduced. In view of the above-mentioned U.S. Patent No. US7.688008, a lighting lamp (Lighting Lamp) can be driven by driving a Timer (Pulse Width Modulation, PWM) mtM. The light emitting diode is turned on and emits light to delay the extinction of the light source of the light emitting diode. However, the use of timers and pulse width modulation signal generators may increase the complexity of the circuit design, so there is still room for improvement in the drive circuit that delays the light source of the LED. M441288 [New content] In view of the above problems, 'the type is to provide a kind of light-emitting diode driving device, so that when the supply is stopped, some of the light-emitting diodes can be extinguished for a period of time to increase the convenience. And reduce the design complexity and cost of the circuit. The light-emitting diode driving device disclosed in the present invention is suitable for driving M hairs: the light diodes are connected in series by a series of light-emitting diodes, and the cathode ends of the m-th light-emitting diodes are coupled The ground terminal 'M is a positive integer greater than j. The light-emitting diode drive device includes a crane unit, a -: domain, and a Wei component reactance component. The drive unit is used to raise the voltage. The anode terminal of the first diode receives the driving voltage, and the cathode of the second diode is connected to the first! The anode end of the light-emitting diode. One end of the energy storage component is coupled to the cathode end of the first diode, and the second end of the energy storage component is lightly connected to the ground. The first end of the first energy storage element of the impedance S, the second end of the impedance element is reduced by any one of the anode ends of the second to the second light-emitting diodes. In the embodiment, the light-emitting diode driving device further includes a first resistor, a first-blocking resistor, a first-control unit and a switch unit. The first unit of the first resistor is coupled to the second base of the first resistor, and the second end of the second resistor is coupled to the ground. The first control unit is the first end of the resistor for receiving the detection voltage to generate a control signal. The switch unit has a first end, a second end and a third end, a cathode end of the first end of the switch single 7L, and a second end of the switch unit, and the second end of the switch unit is switched to the first control unit The third end of the _ unit consumes the first end of several components of the M441288 4 device. In the embodiment t, the aforementioned light-emitting diode. The second control unit has a first end, and the first end of the control unit including the second control unit is coupled to the driving unit - and the second end of the second control unit is connected to the second end of the second spear to receive the driving voltage. The second end is coupled to the first diode, and the second end of the first control unit is connected to the cathode end of the diode, and the first terminal is coupled to the first end. The second control unit includes a second diode straight wire crystal, and the second control unit includes a second diode straight wire crystal.笛--日^ The fourth resistor is electrically connected to the anode end of the diode and connected to the first end of the second control unit: the younger end is coupled to the cathode end of the second diode, and the third resistor is coupled to the ground. = the first end of the resistor, the first end of the third resistor, : the third end of the unary. The transistor has a first end of the first-: two-terminal two-electrode-connected to the fourth end of the fourth resistor, a fourth end of the transistor, and a second end, and the third end of the transistor is connected to the impedance element In a first embodiment, the aforementioned transistor is a P-type transistor. In an embodiment t, the energy storage component is a capacitor. In an embodiment, the impedance element is a resistor. In the embodiment t, the aforementioned impedance element comprises N resistors. N resistors and part of m峨, (4) of the pole body are connected, and the second end of the first resistor is used as the first end of the Nth resistor as the resistance ΫΙΗ-Η-ΙΖΟΟ The second end of the component, where Ν<Μ. In the case of a yoke only, the drive unit is a step-down type or a reverse-drive unit. The invention discloses a light-emitting diode driving device, which is configured by configuring an impedance field at any one of an _ terminal of a capacitor and an anode terminal of a second to second light-emitting diodes: when the _pressure is stopped The price of the light source of the light-emitting diode can be delayed to increase the power and design complexity and cost. In addition, with the - (four) unit or the second control unit _ zone power = and according to the drink to the impedance element _ connection, so that the illuminating diode produced more uniform. The features and implementations of the present invention will be described in detail with reference to the accompanying drawings. FIG. The "Picture 1" of the first embodiment of the present invention is shown in Fig. 1, which is a schematic diagram of the light-emitting diode device of the first embodiment. The light of the material is off. _ Exposure _ is suitable for driving the second light of 15GHM, and the injection M is greater than the blush integer. The light is woven in series, that is, the cathode of the i-th light-emitting diode, and the anode end of the +1 light-emitting diode, wherein 〇<i^M. That is to say 'the first! The cathode end of the light-emitting diode 120J_the second terminal of the second diode is 2, the cathode end of the second LED i2G-2 is light M441288, and the third LED 12 is connected The anode end of the third electrode, the cathode end of the first light-emitting diode ojVi-i is coupled to the anode end of the Mth light-emitting diode, and the cathode end of the first light-emitting diode is coupled to the ground GND . The LED driving device 100 includes a driving unit 110, a first diode 01, a '::b element 120 and an impedance element 130. The driving unit 11, for example, receives a power supply voltage -VIN' to convert the power supply voltage VIN to provide a driving voltage milk. In this embodiment, the 'power plane VIN can be a standing voltage or DC. Moreover, the drive unit no can be, but is not limited to, a buck driver, a boost type (thin lean) drive =, a boost type (Boost-Buck) driver, or a reverse type (Flyback drive: another 'driver Single Fan 110 can also be a DC/DC power converter, AC_DC power converter or power switch, etc. Or, the drive unit does not directly cry the voltage source or current source, etc. The anode terminal of the first pole D1 receives The driving voltage yj), the cathode end of the first diode is input to the anode end of the i-th LED 15GJ. Energy storage element: = terminal _ — the cathode end of the diode D1, and the second end handle of the energy storage tree (10) is connected to the ground terminal. In her thanks, the component m _ but not the capacitor C. The first end of the impedance element 13A is connected to the first end of the energy storage tree (10), and the second end of the resisting member 130 is connected to the Mth light emitting diode (9). The above description of the internal components of the light-emitting diode driving device 1 is described. Hereinafter, an operation in which the light-emitting diode is driven by one turn will be described. First, for example, the power supply is purchased by the electric power supply unit, and the drive unit (10) converts the power supply to the drive voltage ^2Γ: 7 M441288 At this time, the voltage at the anode end of the first two poles is greater than the cathode. The voltage at the terminal, so that the first diode m is turned on, the driving voltage is output to the anode terminal of the light-emitting diode =", so that the light-emitting diode 15 (〇~i5〇-m is turned on and emits light. The driving voltage VD also charges the capacitance c of the energy storage element 12〇, so that the capacitor C of the energy storage element 12 generates a storage voltage. Next, when the power supply stops supplying the power supply, due to the pole body D1 The voltage at the anode end, the voltage of the two 9-shaped "cathode cake", so that the first-electrode body is turned off, and the energy storage surface on the capacitor C of the 12G of the sending member 130 is discharged through the resistor R of the impedance element 30. Luminous, until the age of 俾12〇w body 15〇—M is still on and the storage voltage of b is c is discharged to below the conduction voltage of the light-emitting diode 150JV. _, cut-off == stop supply When the power is WN, the light-emitting diode does not have all of tr The light-emitting diode can still be extinguished by the power of the ship (4). The first light source of the polar body is extinguished for convenience, in the "first picture, the second end coupled to the volume M", Only the light-emitting second light-emitting diodes 15 of the impedance element 130 are shown to be stopped, and f _ first-two-private calls are made, so that the working inter-cells can be considered and subtracted. However, the present invention is not limited thereto. , the sustainable light can be connected to the second bamboo shoots - 炻锕 7 兀 】 】 】 30 the second end can also be coupled to the anode end of the first polar body 150-2 to the anode end of the 15 shirt - any call The solid-state light-emitting diode still achieves the same effect as the light source extinguishing of the light-emitting diode M441288 body of the delay portion. Please refer to the "second figure" as shown in the second embodiment of the light-emitting diode driving device of the second embodiment. The light-emitting diode driving device 2 is adapted to drive the light-emitting diodes 150-1~150_M, wherein M is a positive integer greater than i. The light-emitting diode driving device 200 includes a driving unit 110, a first diode D1, an energy storage element: a member 120, an impedance element 210. wherein the driving unit 110, the first two The body D1: the energy storage element i20, the relationship with the light-emitting diodes 150J~150-M, and the corresponding operation thereof can be described in the embodiment of the "Fig. 1", and therefore will not be described herein. The impedance element 210 includes N resistors RJ 〜 resistors respectively coupled to at least one of the partial illuminating diodes, and the first end of the first resistor RJ serves as the first end of the impedance element 21 :: the Nth resistor The second end of R_N serves as the second end of the impedance element 21〇, and n < m. For example, 'the first resistor Rj (four) - the end of the light-emitting diode i5 〇! • the anode end, the first resistor RJ The cathode end of the second light-emitting diode (5) i, that is, the ith resistor R1 is connected in parallel with the light-emitting diode 15〇2; the first end of the second resistor R-2 is connected to the light-emitting diode 15 The anode end of ()-3, the second resistor, the cathode end of the -2 first-light-emitting diode 15{)-4, that is, the second end of the second resistor R-2 and the light-emitting diode 150-3 and 150-4 are connected in parallel. , ', the third resistor R' to the Nth light-emitting diode ^R_N and the light-emitting diode = p light turn can be described separately, so no longer repeat here, * resistance ~ r-n, [, The number of electro-optic-parallel connections can be adjusted according to the user's needs. Moreover, each of the resistors is separated by at least "light emitting diodes", and the number of spaced light emitting M441288 2 can be lightly dependent on the requirements, for example, the first resistor R i and the second 2 are spaced apart from each other. Polar body (9)-2, the rest. First, for example, a power supply is supplied from a power supply, a voltage VIN, and the drive unit 110' drives the unit 110 to change the power supply voltage v_ to the drive voltage 11 〇 and output. At this time, since the voltage at the anode terminal of the first diode D1 is greater than the voltage at the cathode terminal, the first diode is turned on, and the driving power is output to the anode terminal of the light-emitting diode 15〇1. The light-emitting diodes 15〇j~i5〇-m are turned on and emit light. Here, the driving voltage vd also charges the capacitance c of the element 12A such that the capacitance C of the energy storage element 120 generates a storage voltage. Then, 'Whether the power supply| § stops supplying the power supply VIN, since the voltage at the anode end of the first diode is not greater than the voltage at the cathode end, the first: : pole body m cut off 'Jing (four) body 15Q) suction m will be cut off and not at this time 'the energy level of the capacitor (c) on the capacitor c will be discharged through a discharge path generated by the resistor R on the R-N of the resistor R, so that the illuminating body 150-M And the light-emitting diode that is not connected in parallel with the resistor phantom-new is still holding the ^^ sub-light, the capacitance of the fine Wei tree 12Q c_discharge to low " winter light - the turn-on voltage of the polar body 150-M. Therefore, when the power supply is stopped, the light-emitting diodes do not emit all of the light, and some of the light-emitting diodes can still emit light by the energy storage of the energy storage element (10) to delay the light emission. For the light-emitting diode of the light source generated by the diode, please refer to "3rd figure". It is a schematic diagram of the new type of bucket-°° moving device. The light-emitting diode driving device 3 (8) of the present embodiment is adapted to drive the light-emitting body (9) - 丨 ~ both M, where Μ is a positive integer greater than 丨. The illuminating body driving device 3GG includes a driving unit 110, a second-pole body D, an energy storage element 120, an impedance element 13A, a first resistor, a second resistor, and a first control unit = 〇 and a switching unit 32Q. Among them, the driving unit η〇, the first diode, the / component 12〇, the impedance element cutting and the light-emitting diode (9)-Η%-Μ the connection relationship and its corresponding operation can refer to the implementation of "1" The description of the example is not repeated here. In this embodiment, the first end of the first resistor R1 is coupled to the driving unit 10V to receive the driving voltage VD, and the second end of the first resistor generates a detecting voltage. ^ The first end of the resistor is connected to the second end of the resistor R1, the second resistor buckle is: the end is connected to the ground terminal (3 where Q. Thunder second: unit: 1. The first of the resistor R1 The terminal ' is configured to receive the detection 1 control unit 31Q to generate a control signal. The switch unit 320 has a second end, a second end and a third end, and the first end of the switch unit 320 is coupled to the second diode D1. The second end of the cathode end 'switch unit 320 is lightly connected to the first control unit 310' to receive the control signal, the third end of the switch unit is moved _ and one end of the anti-element 13; wherein the switch unit 32. When the power supply is supplied between the cathode end of the body m and the first end of the impedance element (10), the driving unit (10) voltage viN is converted into the driving voltage VD and output. At this time, due to the first - second town = German extreme The voltage is greater than the voltage at the cathode terminal, and (4) the __ diode is called M441288, and the driving voltage VD is output to the anode terminal of the light-emitting diode 150-ι, so that the light-emitting diodes 15〇_1~150_M are turned on and emit light. The driving voltage ^ also charges the capacitance C of the energy storage element 120, so that the energy storage element 12 is The capacitor c generates a storage voltage. At this time, the first resistor R1 and the second resistor R2 are divided, so that the first end of the second resistor R2 generates a detection voltage such as a high logic level (ie, on the second resistor). The first control unit generates a control signal, for example, a low logic level, to the switching unit 320, so that the switching unit 32 turns off the cathode end of the first diode m and the first end of the impedance element 130. The connection between them, therefore all the light-emitting diodes 15 (U~150_M will have the same driving current, so that the brightness of the light-emitting diodes 150_1~15〇_M is relatively uniform. On the other hand 'When the power supply is stopped When the power supply voltage is constant, the driving unit (10) does not generate the driving voltage VO. At this time, the second end of the second resistor generates a side voltage such as a low logic bit, and the first control unit 31 generates high logic for the library, for example. The control signal of the level is given to the switching unit 320, so that the switching unit 32 turns on the connection between the cathode end of the second-pole body m and the first end of the impedance element 13G, thereby generating a conduction path. Error on capacitor c of piece 120 If it can be charged, it will discharge through the impedance component paper resistor R, so that the light-emitting diode i5〇Μ is still turned on and emits light, and the capacitance C__ of the straight tree 12G is discharged to be lower than the turn-on voltage of the light-emitting diode 150_M. Therefore, when the supply of Wei Wei is stopped, the LEDs will not turn off all of the 12 M441288 without emitting light, and some of the LEDs can still be stored by the capacitor C of the energy storage element 120. Continued illumination to delay the burn-out time of the light source generated by the light-emitting diode. May refers to "fourth figure", which is the fourth embodiment of the present invention, and the embodiment of the light-emitting diode driving device An example of a light-emitting diode driving device is adapted to drive a light-emitting diode 15 (U~150 JM, where M$ is greater than a positive integer of i). The light-emitting diode driving device includes a driving unit ιι, a first diode Μ, an energy storage element 120 impedance element 130 and a second control unit. Among them, the drive unit I]. The first diode P1, the energy storage device 12〇, the impedance component 13〇 and the light-emitting diode 1〇1~150JVI can be referred to the description of the “i-th diagram” g embodiment. I will not repeat them here. In the present embodiment, the second control unit 41 has a first end 411, a second end 412, a third end 413 and a fourth end 414, and the first end 411 of the second control unit 4K) receives the driving voltage VD, The second end 412 of the second control unit 〇 is the anode end of the first two poles • the m, the third end of the second control unit 41 413 is the cathode end of the first diode pi, and the second control unit 41 The fourth end 414 of the crucible is thin and resistant to the first end of the component (10). When the power supply wire supplies the power supply voltage VIN, Crane_ converts the power supply voltage to the drive voltage VD and outputs it. At this time, the second control unit, the first & 411 and the first end 412 provide a first conductive path, so that the driver L1 is driven via the second control unit J to the second end 411 and the second end 412. The first diode D1 is output to the anode end of the first light-emitting diode, and the light-emitting M441288 diode 150_1~150_Μ is turned on and the capacitor C of the light-emitting energy storage element 120 is charged to generate a storage voltage. The driving voltage VD will be simultaneously applied to make the capacitance of the energy storage element 12

㈣讀能電壓放電至低於第M個發光二極體15G—m的導通電 壓為止。 在本貫施财’當提供工作電壓VIN時,第二控制單元41〇 僅於其弟—端411與第二端412提供第一導電路徑,而並不會於 ”第一^413與第四端414提供第二導電路徑,因此所有發光二 極體150J〜ι50—Μ會具有相同的驅動電流,而使得發光二極體 150—1〜15〇__Μ的亮度較為均勻。 。月參考「第5圖」所示,其為本新型第五實施例之發光二極 體驅動裴置的不意圖。本實施例之發光二極體驅動裝置500適於 驅動發光二極體15G—丨〜既Μ,其中Μ為大於丨的正整數。發光 二極體驅動裂置5⑻包括驅動單元no、第-二極體m、儲能元 件120、阻抗7^牛130與第二控制單元410。其中,驅動單元11〇、 第一一極體Dl、儲能元件120、阻抗元件130、第二控制單元410 14 M441288 與發光二極體15(L1〜15G—M _接關係與其相應操作可參考「第 1圖」及「第4」®之實關的說明,故在此不再贊述。 在本實施例中,第二控制單元的第一端4ΐι =第二端犯 直絲接’亦即第二控鮮元的第一端奶與第二端二可 視為同-端。並且,且第二控制單元包括第二二極體说、第 =阻R3、第四電隨與電晶_。第二二極體M的陽極端 驗弟二控制單元41_—物。第三電阻R3的第—端減 弟--極體D2的陰極端,第三電阻R3的第:端鱗接地端隱。 第四電阻R4的第-端柄接第三電阻犯.的第1,第四電阻 R4的第二端搞接第二控制單元彻的第三端413。電晶體奶亘 有第-#端、第二端與第三端,電晶體M1的第一翻接第四電阻 R4的第i*而’電晶體Ml的第二端輕接第四電阻R4的第二端, 電晶體Ml的第三端麵接阻抗元件13〇的第一端。(4) The read voltage is discharged until the conduction voltage is lower than 15G-m of the Mth light-emitting diode. When the operating voltage VIN is supplied, the second control unit 41 provides the first conductive path only to the other end 411 and the second end 412, and does not "first ^ 413 and fourth" The terminal 414 provides a second conductive path, so that all of the light-emitting diodes 150J~ι50-Μ have the same driving current, so that the brightness of the light-emitting diodes 150-1~15〇__Μ is relatively uniform. 5 is a schematic view of the light-emitting diode driving device of the fifth embodiment of the present invention. The light-emitting diode driving device 500 of the present embodiment is adapted to drive the light-emitting diodes 15G-丨~, where Μ is a positive integer greater than 丨. The light-emitting diode drive split 5 (8) includes a drive unit no, a second-pole body m, an energy storage element 120, an impedance, and a second control unit 410. The driving unit 11A, the first one body D1, the energy storage element 120, the impedance element 130, the second control unit 410 14 M441288 and the light emitting diode 15 (L1~15G-M_ connection relationship and their corresponding operations can be referred to The descriptions of "1" and "4th" are not mentioned here. In this embodiment, the first end of the second control unit is 4ΐι = the second end is directly connected. That is, the first end milk of the second control unit and the second end 2 can be regarded as the same end. And, the second control unit includes the second diode, the third resistor R3, and the fourth electric and the electro-crystal _ The anode end of the second diode M is controlled by the second control unit 41_-. The third end of the third resistor R3 is the cathode end of the polar body D2, and the third end of the third resistor R3 is hidden by the ground end of the scale The second end of the fourth resistor R4 is connected to the third resistor. The second end of the fourth resistor R4 is connected to the third end 413 of the second control unit. The transistor has a ## end. The second end and the third end, the first end of the transistor M1 is connected to the i-th of the fourth resistor R4, and the second end of the transistor M1 is lightly connected to the second end of the fourth resistor R4, the first of the transistor M1 Three-end An impedance element connected to a first end of 13〇.

在本貫施例中’電晶體M1例如為但不限定為P型電晶體, 其中電晶體Ml的第一端例如為p型電晶體的閑極端,電晶體M 的第二端例如為P型電晶體的源極端,電晶體腫的第三端例如 為P型電晶體的及極端。 ^電源供應益提供電源電壓VIN時,驅動單元no會將電源 電壓VIN轉換為驅動電壓VD並輪出·,且第一二極體D1 第二 二極體D2導通。此時,由於第二控制單元“ο的第一端41ι與第 二端412直接耦接’以提供對應「第4圖」之實施例的第一導電 路徑,則驅動電壓VD可經由第二控制單元41〇的第一端412與 ST、第—二極體D1輸出至第1個發光二極體和的陽 =蝴m鋪15G」〜15_料峨。並 :=:會同時對儲能元件叫 凡件120之電容C產生儲能電壓。 1此%’猎由電阻分壓’則第四電阻R4之第-端的電壓(即第 二上的壓降)近似或等於第四電阻R4之第二端的電壓, 侍曰曰體Ml不導通。因此,第二控制單元並 四㈣觸,職,酬槪二= 15〇一』~M會具有相同的驅動電流,而使得發光二極體 15〇_1〜15〇__Μ的亮度較為均勻。 〜另方面’备電源供應器停止提供電源電壓VIN時,則驅動 =元m不會產生驅動電壓VD,且第一二極細與第二二極體 截止。此時’藉由電阻分壓,則第四電阻似之第二端的電壓 於第四電阻R4之第一端的電壓(即第三電阻R3上的壓降),使 得電晶體M1導通。因此,第二控制單元彻會於其第三端413 與弟四端414提供第二導電路徑’使得儲能元件12〇之電容c的 儲能電壓,經由第二控制單元·的第三端仍與第四端似、阻抗 几件^輸出至第M個發光二極體15〇_m的陽極端,以進行放 電使得第]V[個發光二極體ls〇—M仍持續導通並發光,直到前述 儲能電壓放電至低於第M個發光二極體15Q—M的導通電塵為止。 本新型之實施例所揭露的發光二極體驅動裝置,其藉由配置 阻抗元件(例如電阻)於電容之第—端與第2〜M個發光二極體之 16 M441288 150」”會具有相同的驅動電流,而使得發光二極體 〜150_M的亮度較為均勻。 .另-方面’當電源供應器停止提供電源電壓時,則驅動 單元UG不會纽驅動電壓VD,且第—二極體m與第二二極體 D2截止。此時,藉由電阻分壓,則第四電阻R4之第二端的電壓 大於第四電阻似之第-端的電壓(即第三電阻犯上的壓降),使 得電晶請導通。因此,.:第二控制單元_會於其第三端仍 與第四端414提供第二導電路徑,使得儲能元件m之電容C的 儲能電壓經由第二控制單.元的第三端413與第四端.缸抗 兀件m輸㈣M個發光二極體及M的陽極端,以進行放 電,使得第Μ個發光二極體15_乃持續導通並發光’直到前述 储峨放鶴於第Μ峨:極體_料蝴為止。 跋=之實施例所揭露的發光二極_裝置,其藉由配置 =的任何一個之間,使得當停止提供驅動電· .二=^_間,,的便利性,並減少電路 = ,獅_输抗科連: 使传發光二極體所產生的亮度較為均勻。 新型驗小咖如限定本 '像技藝者’在不脫離本新型之精神和範圍内, J7 M441288 當可作些許之更動與潤飾,因此本新型之專利保護範圍須視本說 明書所附之申請專利範圍所界定者為準。 【圖式簡單說明】 第1圖為本新型第一實施例之發光二極體驅動裝置的示意圖。 第2圖為本新型第二實施例之發光二極體驅動裝置的示意圖。 第3圖為本新型第三實施例之發光二極體驅動裝置的示意圖。 第4圖為本新型第四實施例之發光二極體驅動裝置的示意圖。 第5圖為本新型第五實施例之發光二極體驅動裝置的示意圖。 【主要元件符號說明】 100、200、300、400、500 發光二極體驅動裝置 110 驅動單元 120 儲能元件 130 阻抗元件 150_1〜150_M 發光二極體 310 第一控制單元 320 開關單元 410 第二控制單元 411 第一端 412 第二端 413 第三端 414 第四端 18In the present embodiment, the transistor M1 is, for example, but not limited to, a P-type transistor, wherein the first end of the transistor M1 is, for example, the idle end of the p-type transistor, and the second end of the transistor M is, for example, a P-type. At the source end of the transistor, the third end of the transistor is, for example, a P-type transistor and an extreme. When the power supply is supplied with the power supply voltage VIN, the drive unit no converts the power supply voltage VIN into the drive voltage VD and turns on, and the second diode D2 of the first diode D1 is turned on. At this time, since the first control unit ο is directly coupled to the second end 412 to provide a first conductive path corresponding to the embodiment of FIG. 4, the driving voltage VD can be controlled via the second control. The first end 412 of the unit 41〇 and the ST and the second diode D1 are output to the first light-emitting diode and the anode/female 15G” 1515”. And :=: will simultaneously generate a storage voltage for the capacitor C of the energy storage component. 1% 'hunting by resistor breakdown', then the voltage at the first end of the fourth resistor R4 (i.e., the voltage drop on the second) is approximately equal to or equal to the voltage at the second terminal of the fourth resistor R4, and the donor body M1 is not turned on. Therefore, the second control unit and the four (four) touches, the job, the reward two = 15 〇 one 』 ~ M will have the same drive current, so that the brightness of the light-emitting diodes 15 〇 1 ~ 15 〇 __ 较为 is relatively uniform. ~ When the standby power supply stops supplying the power supply voltage VIN, the drive = element m does not generate the drive voltage VD, and the first two-pole thin and the second diode are turned off. At this time, by the resistor division, the voltage of the second resistor is like the voltage at the first end of the fourth resistor R4 (i.e., the voltage drop across the third resistor R3), so that the transistor M1 is turned on. Therefore, the second control unit will provide the second conductive path 'at its third end 413 and the fourth end 414 such that the storage voltage of the capacitor c of the energy storage element 12 is still via the third end of the second control unit. Similar to the fourth end, the impedance is outputted to the anode end of the Mth light-emitting diode 15〇_m to discharge so that the first V [light-emitting diode ls〇-M is still turned on and emits light, Until the aforementioned storage voltage is discharged to be lower than the conduction dust of the Mth LED 15Q-M. The LED driving device disclosed in the embodiment of the present invention has the same impedance element (for example, a resistor) at the first end of the capacitor and 16 M441288 150" of the second to M LEDs. The driving current makes the brightness of the light emitting diode ~150_M relatively uniform. Another aspect 'When the power supply stops supplying the power supply voltage, the driving unit UG does not drive the driving voltage VD, and the first diode m And the second diode D2 is cut off. At this time, by the voltage division of the resistor, the voltage of the second end of the fourth resistor R4 is greater than the voltage of the fourth end of the fourth resistor (ie, the voltage drop caused by the third resistor), so that The electric crystal should be turned on. Therefore, the second control unit _ will still provide a second conductive path with the fourth end 414 at its third end, so that the storage voltage of the capacitor C of the energy storage element m is via the second control sheet. The third end 413 and the fourth end of the element. The cylinder anti-clamping member m transmits (four) M light-emitting diodes and the anode end of M to discharge, so that the second light-emitting diode 15_ is continuously turned on and emits light until The above-mentioned storage and storage cranes are in Dijon: the polar body _ material is butterfly. 跋=之The illuminating diode-device disclosed in the embodiment is configured by any one of the =, so that when the driving power supply is stopped, the convenience is reduced, and the circuit is reduced, and the lion_transmission resistance is reduced. Corlian: The brightness produced by the light-emitting diode is relatively uniform. The new type of small coffee is limited to the 'artist'. Without any departure from the spirit and scope of this new model, J7 M441288 can make some changes and retouching. Therefore, the scope of patent protection of the present invention is subject to the scope of the patent application attached to the specification. [FIG. 1] FIG. 1 is a schematic view of a light-emitting diode driving device according to a first embodiment of the present invention. 2 is a schematic view of a light-emitting diode driving device according to a second embodiment of the present invention. FIG. 3 is a schematic view of a light-emitting diode driving device according to a third embodiment of the present invention. FIG. 4 is a fourth embodiment of the present invention. FIG. 5 is a schematic view of a light-emitting diode driving device according to a fifth embodiment of the present invention. [Description of main components] 100, 200, 300, 400, 500 light-emitting diode driving device 110 An energy storage unit 120 movable element 130 impedance element 150_1~150_M light-emitting diode 310 of the first control unit 320 controls the switching unit 410 of the second unit 411 first end 412 second end 413 of the third end 414 of the fourth end 18

Claims (1)

六、_請專利範圍: L -種發光4體驅動裝置,適 個發光二極體以串麵接,第固=二極發,讀 -驅動單元,用以接收—電源=二極體驅動裝‘ 成—驅動·,以提供該驅麵屋;土 H亥電源電摩轉镇 —弟-二極體,其陽極端輪軸 電壓,其陰極端搞接第i個發光 早几’以接收該驅動 一—儲能元件,其第一端輕接該第體==端」山.户 二端耦接接地端;以及 —的陰極端,其第 —阻抗元件’其第-端輕接該魏元件的第’ P 舄耦接第2〜M贿光^體 U- 2.如請如所述之發光二 廢,立ί 生’以接收該驅動電 ,、弟一鳊產生一傾測電壓; 心:’其第—端一電_第二端,其第二 ㈣:Γ控制單元,咖第一電阻的第-端,用以接收該 電壓,以產生-控制訊號;以及 -開關單元,具有-第-端、—第二端與—第三端,該開 的該第—端她該第—二極體的陰極端,該開關單元的 端該第_控制單元,以接收該控制訊號,該開關單 19 M441288 元的5亥第二端_接該阻抗元件的第-端。 3.如咕求項I所述之發光二極體驅動褒置,更包括: 端; 一第―!二控制單元’具有一第—端、-第二端、-第三端與 ^叫,該第二控制單元的該第一端_該驅動單元,以接 收麵動電壓,該第二控制單元的該第二端耦接該第-二極體 ㈣極端’該第二控制單元的該第三_玄第—二極體的陰 極^,該第二控制單元的該第四端輕接該阻抗元件的第一端。 屯如請求項3所述之發光二極體驅動裝置,其中該第二控制單元 的,玄第-端與該第二端直接耦接,且該第二控制單元包括. -第二二極體,其陽極端咖第二控制單元的該第一 其第 -第三電阻,其第1執接該第二二極體的陰極端, 端耦接接地端; -第四電阻’其第-喊接該第三電阻的第—端,其第二 端耦接該第二控制單元的該第三端;以及 -電晶體’具有-第〜端、一第二端與一第三端,該電盖 體的該第-端耦接該細電阻的第—端,該電晶體的該第二对 轉接該第四電阻的第二端’該電晶體的該第三端_該阻抗力 件的第一端。 几7 電晶體為一p 5‘如請求項4所述之發光二極體驅動裝置,其中該 型電晶體。 元件為 6·如凊求項1所述之發光二極體驅動裝置,其中該儲能 20 M441288 電容。 7·如請求項1所述之發光二極體驅動裝置,其中該阻抗元件 電阻。 士。月求項1所述之發光二杨體驅動裝置,其中該阻抗元件包括. Ν個電阻’該Ν個電阻分別與部分該m個發光二極體 件接,而第1個電阻的第一端作為該阻抗元 =:㈣電_第二端作為該阻抗元件的第二端, 9.如請求項1所述之發光二極體驅動‘ 降壓型驅動器、一升壓型驅動哭、〃中该驅動單元為一 馳型驅·。 "動。。、—^•降壓型驅動器或-反Sixth, _ please patent range: L - kind of luminous 4 body drive device, suitable for a light-emitting diode to be connected by a series, the first solid = two poles, read-drive unit, for receiving - power = diode drive '成—Drive· to provide the drive house; earth H Hai power supply electric motor to town-di-diode, its anode end axle voltage, its cathode end engages the i-th light early to receive the drive a storage element, the first end of which is lightly connected to the first body == end", the second end of the household is coupled to the ground end; and the cathode end of the first impedance element of the first impedance end of the first impedance is connected to the Wei element The 'P 舄 coupling 2~M bribes ^ body U- 2. If you want to illuminate the two wastes, as shown in the figure, to receive the drive power, the brother produces a tilt voltage; : 'the first end - the second end, the second (four): the control unit, the first end of the first resistor of the coffee, for receiving the voltage to generate a - control signal; and - the switch unit, having - a first end, a second end and a third end, the first end of the opening, the cathode end of the first diode, the end of the switching unit To receive the control signal, the switching unit 19 M441288 Hai element 5 connected to a second end of the resistive element _ - of end. 3. The illuminating diode driving device of claim 1, further comprising: an end; a ―! 2 control unit Having a first end, a second end, a third end, and a ^, The first end of the second control unit is configured to receive a surface voltage, and the second end of the second control unit is coupled to the second diode (four) extreme 'the second control unit The third end of the second control unit is lightly connected to the first end of the impedance element. The light-emitting diode driving device of claim 3, wherein the second control unit is directly coupled to the second end, and the second control unit comprises: the second diode The first third-resistance of the second control unit of the anode end, the first end of the second diode is connected to the cathode end, and the end is coupled to the ground end; the fourth resistor's first-call Connected to the first end of the third resistor, the second end of which is coupled to the third end of the second control unit; and - the transistor 'has a - the first end, a second end and a third end, the The first end of the cover is coupled to the first end of the thin resistor, and the second end of the transistor is coupled to the second end of the fourth resistor 'the third end of the transistor _ the resistive member First end. The transistor of the seventh embodiment is a light-emitting diode driving device according to claim 4, wherein the transistor is of the type. The component is a light-emitting diode driving device according to claim 1, wherein the energy storage 20 M441288 capacitor. The light-emitting diode driving device of claim 1, wherein the impedance element is electrically resistive. Shi. The illuminating two-yang body driving device according to Item 1, wherein the impedance element comprises: one resistors, wherein the resistors are respectively connected to a part of the m light-emitting diodes, and the first end of the first resistor As the impedance element =: (4) electric_the second end serves as the second end of the impedance element, 9. The light-emitting diode drive as described in claim 1 is a 'buck type driver, a step-up type driver is crying, 〃中The drive unit is a drive type. "Action. . , —^• buck driver or -reverse
TW101212392U 2012-06-27 2012-06-27 LED driving apparatus TWM441288U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI491306B (en) * 2012-11-28 2015-07-01 Analog Integrations Corp Ac driven lighting system capable of avoiding dark zone
TWI568120B (en) * 2014-10-03 2017-01-21 惠普發展公司有限責任合夥企業 A clamping circuit and related method
TWI815768B (en) * 2020-04-29 2023-09-11 聯詠科技股份有限公司 Display device and driver thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI491306B (en) * 2012-11-28 2015-07-01 Analog Integrations Corp Ac driven lighting system capable of avoiding dark zone
TWI568120B (en) * 2014-10-03 2017-01-21 惠普發展公司有限責任合夥企業 A clamping circuit and related method
US10497404B2 (en) 2014-10-03 2019-12-03 Hewlett-Packard Development Company, L.P. Clamping circuit
TWI815768B (en) * 2020-04-29 2023-09-11 聯詠科技股份有限公司 Display device and driver thereof

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