TW200917191A - Driving unit for displaying apparatus with light emitting diode - Google Patents

Driving unit for displaying apparatus with light emitting diode Download PDF

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Publication number
TW200917191A
TW200917191A TW96138231A TW96138231A TW200917191A TW 200917191 A TW200917191 A TW 200917191A TW 96138231 A TW96138231 A TW 96138231A TW 96138231 A TW96138231 A TW 96138231A TW 200917191 A TW200917191 A TW 200917191A
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Taiwan
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control
auxiliary
transistor
terminal
input
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TW96138231A
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Chinese (zh)
Inventor
Jian-Long Kuo
Tsung-Yu Wang
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Nat Kaohsiung First University Of Science Technology
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Priority to TW96138231A priority Critical patent/TW200917191A/en
Publication of TW200917191A publication Critical patent/TW200917191A/en

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Abstract

A driving unit for displaying apparatus with light emitting diode comprises a main control circuit and an auxiliary control circuit. The main control circuit provides a control transistor connected with a light emitting diode in series. The auxiliary control circuit has a not gate and an auxiliary transistor. The not gate is connected between a control terminal of the control transistor and a control terminal of the auxiliary transistor and an auxiliary input terminal of the auxiliary transistor is connected with an output terminal of the control transistor. Accordingly, when the auxiliary transistor and the control transistor are complementary in switching on and off operation, the driving waveforms for the light emitting diode will be therefore improved.

Description

200917191 九、發明說明: 【發明所屬之技術領域】 本發明係關於一種發光二極體顯示裝置之驅動單元,特 別是關於利用一辅助控制電路辅助一主控制電路進行發光 二極體之亮或滅之控制。 【先前技術】 隨著發光二極體元件技術快速的發展,使其相較於傳統 的發光元件,如燈泡及日光燈等,具有較長的生命週期、高 亮度、高效率及低成本等優點,因此許多業者逐漸將發光2 極體元件使用於各種顯示裝置之應用中,例如由數個發光: 極體組成一排燈陣列’使用者可藉由一驅動單元進行^ 陣列的閃爍控制。 五200917191 IX. Description of the Invention: [Technical Field] The present invention relates to a driving unit of a light-emitting diode display device, and more particularly to assisting a main control circuit for performing illumination or extinction of a light-emitting diode by using an auxiliary control circuit Control. [Prior Art] With the rapid development of the light-emitting diode element technology, it has the advantages of long life cycle, high brightness, high efficiency and low cost compared with conventional light-emitting elements such as light bulbs and fluorescent lamps. Therefore, many manufacturers gradually use the LED body element in various display device applications, for example, by a plurality of illuminations: the pole body constitutes a row of lamp arrays, and the user can perform the flicker control of the array by a driving unit. Fives

為用贫无二極體顯示裝置之驅動單元如第〗圖所示, 包含一驅動控制元件91、數個電晶體92、數個發^ 几件93及數個限流電阻94。該驅動控制元件%且 輪出㈣端聊,·1),以分別連接該數個電晶體92/ 各該电晶體92、發光二極體元件93及限流電阻 聯連接。如此,該驅動控制元件91之_ 、吻、…可分別送出,賊予各 ,以便控制該電晶體92之導通或斷開&離, 日日體· 該發光二極體93亮或滅。斷開狀^而分別控 然而…般而言’上述制具有下列缺點 圖所不’當該電晶體92自該驅動控制元件9 轉態的控制信號〔即由高電壓準位Η轉態為低電壓^ 200917191 的控制信號〕時’該電晶體92即斷開,此時該發光二極體 93之陽極〔位於該發光二極體93與電晶體92串聯連接處 〕成浮接〔Floating〕狀癌,而使得儲存於該電晶體92之 可生電谷Cs内之電荷經由該發光二極體93及限流電阻 94,接地端放電,因此如第3圖所示,每個負緣轉態的控 制6號將形成斷開延遲的現象,由於該斷開延遲之時間可持 續數個毫秒,如此將不册該發光二極體93亮滅的控制, ,如若要將發光二極體93之亮度進行閉迴路控制時,由於 壳度正比於電流’因此可藉由第3圖的驅動波形進行亮度的The driving unit for using the lean diode display device includes a driving control element 91, a plurality of transistors 92, a plurality of generating members 93 and a plurality of current limiting resistors 94 as shown in the drawing. The drive control element is connected to the plurality of transistors 92/each of the transistors 92, the light-emitting diode elements 93, and the current limiting resistors, respectively. In this way, the _, kiss, ... of the drive control element 91 can be respectively sent out, and the thief can be controlled to control the conduction or disconnection of the transistor 92, and the light-emitting diode 93 is turned on or off. Disconnected and separately controlled, however, the above-mentioned system has the following disadvantages: when the transistor 92 is rotated from the drive control element 9 (ie, from a high voltage level to a low state) When the control signal of the voltage ^200917191] is turned off, the transistor 92 is turned off, and the anode of the light-emitting diode 93 (located at the junction of the light-emitting diode 93 and the transistor 92) is floated. Cancer, so that the charge stored in the electricity generating valley Cs of the transistor 92 is discharged through the light-emitting diode 93 and the current limiting resistor 94, and the grounding end is discharged. Therefore, as shown in FIG. 3, each negative-edge transition state is shown. The control No. 6 will form a disconnection delay phenomenon, since the time of the off-delay can last for several milliseconds, so that the control of the light-emitting diode 93 is not extinguished, if the light-emitting diode 93 is to be When the brightness is closed loop control, since the shell degree is proportional to the current', the brightness can be performed by the driving waveform of FIG.

回授,但該驅動波形在該高電壓準位Η轉態為低電壓準=L 時產生的波形失真將會影響控制的精確度。基於上述原因, 有必要進-步改良上述習用發光二極體顯示襄置之驅動單 元。 ^ 有鑑於此,本發明改良上述之缺點,其係將一辅助控制 電路之輔助電晶體與-主控制電路之控制電晶體進行互補 的切換控制崎行發光二極體亮或滅之㈣,其確實可改善 該發光二極體之驅動波形’因此能提升控制的精確性。 【發明内容】 。本發明之主要目的係提供一種發光二極體顯示裝置之 驅動早兀,其係藉由—獅控制f路獅-主控制電路控制 發无二極體之亮或滅,使得本發有提升控_精確^ 功效。 々 ^發明之次要目的係提供一種發光二極體顯示裝置 驅動單元’其係在—辅助控觀路及—主控制電路之間連接 200917191 -多工器及-解多工器,使得本發明具有 及減少電路體積之功效。 电路》又置成本 =據本發明之料二極體顯示打之驅動單元,盆包含 電曰=及:Γ控制電路。該主控制電路具有-控制 :::其與一發光二極體串聯連接。該辅助控制電路具有 f 一輔助電晶體’該反閘連接在該控制電晶體之押制 =及輔助電晶體之辅助控制端之間,且該辅助電晶體之^助 輸t端連接到雜龍晶體之輸㈣。藉此,_辅助電曰 體操作成與該控制電晶體相互補 ·曰曰 善該發光二極體之驅動波形。麵輯卩收態,以改 【實施方式】 為讓本㈣之上歧其他㈣、雜及優點 ,!·重’下文特舉本發明之軔祛杳#也丨、,x a 化”、貝易 細說明如下:例,聽合所關式,作詳 示二二圖所示,本發明第一實施例之發光二極體顯 2二/丨I疋包含一驅動控制元件卜數個主控制電路 電路3。該鶴控制元件丨具有數個輪^ =端卩⑼〜制),各該輪出控制端p(G) p⑴、..或 ,接各該主控制電路2及各_助控财路3。各該主㈣ :2連接一發光二極體4。如此,藉由該驅動控制元:; 之各該輸出控制端p(〇)、p(1)、… 1 以同步控制該主控制電 — 工枱說 ^ ^王卿電路2及該輔助控制電路3,從而. hi先二極體4之亮或滅之控制。 仃 凊參照第5圖所示,其揭示本發明主控制電路2、補助 200917191 路3之細部電路圖’以及與發光二極體4相互間.的電 2接狀態。該主控制電路2設有—控制電晶體21及一限 ^電阻22。該控制電晶體21具有—控制端2ιι、一輸入端 犯及-輸出端213。該主控制電路2之控制端2ιι連接該 驅動控制元件i之其中之-輸出控制端p⑼、ρ(ι)、…或 =-1),以便接收自該驅動控制元件丨之㈣錢,進而控 J該控制電晶體21形成導通或斷開狀態;該輸入端212連 接一電源Vcc;該主控制電路2之輪出端213則連接該發光 二極體4之陽極〔AnGde〕端;且該發光二極體4之陰極〔 ⑽*〕端透過與該發光二極體4串聯之限流電阻22而連 接到接地端。 i 料參照第5賴示’本發明第—實施例之輔助控制電 路3設有一反閘31及一輔助電晶體32。該反問具有一輸入 端311及一輸出端312。該辅助電晶體32具有一輔助控制 端32卜一輔助輸入端322及一輔助輸出端奶。該反間31 之輸入端31卜各驅動控制元件i之輸出控制端p⑼、p⑴ 、…或P(n-l)及該控制電晶體21之控制端211相互連接; 該反閘31之輸出端312連接到該辅助電晶體%之輔助控制 端321,該辅助電晶體32之辅助輸入端322、該控制電晶體 21之輸出端213及發光二極體4之陽極共同連接;該輔助 電晶=32之輔助輸出端323則直連接至接地端。 -月再參照第5圖所示,本發明第一實施例之控制電晶體 21可選肖雙極性接面電晶體〔Bipohf Junction Transistor, BJT〕,則其控制端21卜輪入端2i2及輸出端2i3分別對 200917191 i m的基極、集極及射極聽名稱。同樣地,_助電晶 錢,、可選用餅’則其辅助控制端3n、辅助輸入端3】2 及輔助輸出端313亦分別為基極、集極及射極。為方便說明 :作:::抓的符號名稱進行本發明第-實施例的電路 =照第6圖所示,當本發明第一實施例之驅動控制元 厂低電愿準位L轉態為高電塵準位H的控制信號 "送至該控制電晶體21之基極時,該控制電晶體^ 時該電源VGG提供—電流,赠過該料二極體4 電阻22’再叙接地端形成—迴路。又,該控制信 丨步送至該反開31之輸入端311,經由該反閘31 μ控齡#UC1轉換成—高準位轉態為低電屋準 信。卢S制信號C2,該辅助電晶體32之基極因接收該控制 斷開’因此該電流不會分流到該辅助控制電路3 電^ 制電純21操作成導通時,該輔助控制 :動作’此時該發光二極體迅速點亮。 和制^1照第7圖所示,當本發明第—實施例之驅動 電鲜位Η轉態為低準位L的控 源I、發光二極體4及限流電阻Μ之 ^上形同斷路’該電流停止流經該發光二極體心然 電晶體21之基極-射極接面間因寄生電容& 所儲存之電荷將藉由該輔助护 ”克服如上述習用之浮接現象。更詳而=== 200917191 號C3送至該控制電晶體21之基極同日夺 之輸入端311,經由該反閘31 至5亥反閘31 低電壓準衫電群=:^:^34轉換成— 電晶體32之基極因接收該控制信號C4後^該辅助 輔助電晶體32之集極導接至接地端,由m 之集極係連接雜制電晶體21<_, 晶體21於基極·射極接面間之電荷迅速 助^電 32而釋放至接地端。藉此 °〆辅助電曰曰體 滅。 3發先—極體4將迅速由亮轉 八词不不發明第—實施例 助控制電路3辅助該主控制電路2進行驅動該發光二極體 1時’在該發光二極體4之陽極〔亦為控制電晶體Μ之奶 1所量酬的驅動波形,不論該控制電晶體2ι控制成導i 或斷開狀態,在該驅動波形之正緣ul處時,該發光二極责 4能即時導通;而在負緣u2處時,該發光二極體 .進入斷開狀態。 另外,本發明之驅動單元之控制電晶體21係可選用一 場效電晶體〔Field Effect Transistor, FET〕,則其控制端 211 、、輸入端212及輸出端213分別對應财的間極二、汲極及 源極符號名稱。同樣地,該輔助電晶體32亦可選用fet, 則其辅助控制端32卜輔助輸入端322·及辅助輸出端323亦 分別為閘極、汲極及源極。由於其電路連接及其電路操作原 理與選用BJT時相同,於此不多作贅述。 請參照第9圖所示’其揭示本發明第二實施例之發光二 —10 — 200917191 極體顯示裝置之驅動料。相較於第—實施例,第二實施例 之辅助控制電路3另設有多工器33及-解多卫器34。更 進一步言之’第二實施例與第一實施例之電路結構不同處在 於.該反閘31之輸入端311透過該多工器33連接各該控制 電晶體21之控制端211;而該輔助電晶體32之輔助^二端 322透過該解多工器34連接各該控制電晶體21之輪出端 2B。該多工器33為一 n輸入對丨輸出之多工器〔如8對1 多工器〕,其具有數個輸入端一輸出端丫及 一選擇輸入端組S。該解多工器34為一丨輸入對n輸出之 多工器〔如1對8解多工器〕,其具有一輸入端D、數個輸 出端X(0)〜X(n-l)及一選擇輸入端組r。 j 請再參照第9圖所示,各該驅動控制元件1之輸出控制 端P(0)、p(l)、…或P(n-l)、各該控制電晶體21之控制端 211及多工器33之其中之一輸入端Z(0)、z(1)、…或z(n l) 共同連接;該多工器33之輸出端γ連接到該反閘31的輸 入端311 ;另外,該驅動控制元件i另具有一位址輸入端組 ADDR,該位址輸入端組ADDR連接到該多工器33之選擇 輸入端組S。 請再參照第9圖所示’該輔助控·制電路3之辅助電晶體 32之輸入端322連接到該解多工器34之輸入端D ;該解多 工益34之個別輸出端χ(〇)、X⑴、…或χ(η_ι)分別連接到 各個主控制電路2之控制電晶體21之輸出端213 ;同樣地 ,該驅動控制元件1之位址輸入端組ADDR亦連接到該解 多工器34之選擇輸入端組r。藉由增設該多工器%及解多 200917191 、=34本發明第一貫施例可僅利用一個輔助控制電路3 輔助控制數個主控制電路2,從而控制數個發光二極體4之 亮滅。藉此,第二實施例除了具有第一實施例之功效之外, 亦可減少驅動單元設置體積及成本。 請再參照第9圖所示,以下將詳細說明本發明第二實施 例之驅動單元之電路動作原理。當該驅動控制元件〗之各輸 出控制端P⑼、P(l)、...或pw)欲依序產生—控制信號時 ,首先將驅動控制元件1之各個輸出控制端p(〇)、PQ)、… 或P(n-l)利用二進位進行位址的編碼,例如,該驅動控制元 件1之輸出控制端P(〇)〜卩㈣)數量為8,則第一個輸出控制 知P(0)即編碼為(〇〇〇)2,當該輸出控制端j>(〇)產生一控制信 號時,該編碼值〇〇〇透過該位址輸入端組ADDR傳送至該 多工器33及解多工器34,以便該多工器33可選擇將輸入 端Z(0)與輸出端γ相互接通,且該解多工器34亦同步選擇 將該輸入端D及輸出端X(0)相互接通,如此,可如第一實 施例相同的電路動作控制該對應的發光二極體4之亮或滅 。再者,若當控制信號依序由該驅動控制元件丨其餘的輸出 控制端P(l)〜Ρ(η·1)產生時,亦可由上述的電路動作原理達成 〇 如上所述’相較於習用發光二極體顯示裝置之驅動軍元 本發明藉由該輔助控制電路3辅助該主控制電路2進行發光 一極體4之焭滅控制,其確實可藉由改善該發光二極體之驅 動波形’進而可增加控制的精確性。 雖然本發明已利用上述較佳實施例揭示,然其並非'用以 —12 — 200917191Feedback, but the waveform distortion generated when the drive waveform is turned to the low voltage level = L at the high voltage level will affect the accuracy of the control. For the above reasons, it is necessary to further improve the above-described driving unit of the conventional light-emitting diode display device. In view of the above, the present invention improves the above-mentioned disadvantages by switching the auxiliary transistor of the auxiliary control circuit and the control transistor of the main control circuit to control the switching light-emitting diode to be bright or extinguished (4). It is indeed possible to improve the driving waveform of the light-emitting diode', thus improving the accuracy of the control. SUMMARY OF THE INVENTION The main object of the present invention is to provide a driving diode display device for driving early, which is controlled by the lion-controlled lion-master control circuit to control the brightness or deactivation of the diode-free body, so that the present invention has a lifting control _Exact ^ efficacy. The second objective of the invention is to provide a light-emitting diode display device driving unit 'connecting between the auxiliary control path and the main control circuit 200917191 - multiplexer and - demultiplexer, so that the present invention Has the effect of reducing the size of the circuit. The circuit is again set to cost = according to the invention, the diode display shows the driving unit, and the basin contains the electric 曰= and: Γ control circuit. The main control circuit has a control ::: which is connected in series with a light emitting diode. The auxiliary control circuit has f-auxiliary transistor 'the reverse gate is connected between the control transistor and the auxiliary control terminal of the auxiliary transistor, and the auxiliary transistor is connected to the hybrid terminal The loss of crystals (four). Thereby, the _ auxiliary electric body is operated to be complementary to the control transistor. 驱动 The driving waveform of the illuminating diode is good.卩 卩 , , , , , , , , , , 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为 为The details are as follows: for example, the listening and closing mode, as shown in the detailed two-two figure, the light-emitting diode display 2 2 / 丨 I 第一 of the first embodiment of the present invention comprises a driving control element and a plurality of main control circuits. Circuit 3. The crane control element 丨 has a plurality of wheels ^ = end 卩 (9) ~ system, each of the wheel control terminals p (G) p (1), .. or, each of the main control circuit 2 and each _ control money Road 3. Each of the main (four): 2 is connected to a light-emitting diode 4. Thus, the output control terminals p(〇), p(1), ... 1 of the drive control unit: Controlling the power - the station says ^ ^ Wang Qing circuit 2 and the auxiliary control circuit 3, thereby controlling the light or off of the first diode 4. Referring to Figure 5, it discloses the main control circuit of the present invention. 2. The circuit diagram of the detailed section of 200917191 and the circuit 2 and the state of the electrical connection with the light-emitting diode 4. The main control circuit 2 is provided with a control transistor 21 and a resistor 2 2. The control transistor 21 has a control terminal 2, an input terminal and an output terminal 213. The control terminal 2 of the main control circuit 2 is connected to the drive control component i - the output control terminal p (9), ρ (ι ), or = -1), in order to receive (4) money from the driving control element, thereby controlling the control transistor 21 to be turned on or off; the input terminal 212 is connected to a power source Vcc; the main control circuit 2 The wheel end 213 is connected to the anode (AnGde) end of the light-emitting diode 4; and the cathode [(10)*] end of the light-emitting diode 4 is connected through the current limiting resistor 22 connected in series with the light-emitting diode 4. Referring to the fifth embodiment, the auxiliary control circuit 3 of the first embodiment of the present invention is provided with a reverse gate 31 and an auxiliary transistor 32. The reverse has an input terminal 311 and an output terminal 312. The transistor 32 has an auxiliary control terminal 32, an auxiliary input terminal 322 and an auxiliary output terminal milk. The input terminal 31 of the opposite phase 31 is the output control terminal p(9), p(1), ... or P(nl) of each driving control element i. And the control terminals 211 of the control transistor 21 are connected to each other; the output of the reverse gate 31 The terminal 312 is connected to the auxiliary control terminal 321 of the auxiliary transistor, the auxiliary input terminal 322 of the auxiliary transistor 32, the output terminal 213 of the control transistor 21 and the anode of the LED 4 are connected in common; the auxiliary transistor The auxiliary output terminal 323 of =32 is directly connected to the ground terminal. - Referring again to Fig. 5, the control transistor 21 of the first embodiment of the present invention can select a bipolar junction transistor (Bipohf Junction Transistor, BJT). ], the control terminal 21, the wheel terminal 2i2 and the output terminal 2i3, respectively listen to the base, collector and emitter of the 200917191 im. Similarly, the _ helper crystal, the optional cake ‘the auxiliary control terminal 3n, the auxiliary input terminal 3 ′′ 2 and the auxiliary output terminal 313 are also the base, the collector and the emitter, respectively. For convenience of explanation: the following: The name of the symbol is used to carry out the circuit of the first embodiment of the present invention. As shown in FIG. 6, when the driving control unit of the first embodiment of the present invention has a low power level L, When the control signal of the high electric dust level H is sent to the base of the control transistor 21, the power supply VGG provides a current, and the resistor 22' is re-synchronized. End formation - loop. Moreover, the control signal is sent to the input terminal 311 of the reverse open 31, and the reverse gate 31 μ age #UC1 is converted into a high level transition state to a low power house reference. Lu S system signal C2, the base of the auxiliary transistor 32 is disconnected by receiving the control 'so the current will not be shunted to the auxiliary control circuit 3 when the power is pure 21 operation is turned on, the auxiliary control: action ' At this time, the light-emitting diode is quickly lit. As shown in FIG. 7, when the driving electric field of the first embodiment of the present invention is turned to the low level L, the source I, the light-emitting diode 4, and the current limiting resistor are formed. With the open circuit 'the current stops flowing through the base-emitter junction of the light-emitting diode circuit 21 due to the parasitic capacitance & the stored charge will overcome the floating connection as described above by the auxiliary protection Phenomenon, more detailed === 200917191 C3 is sent to the input terminal 311 of the base of the control transistor 21, through the reverse gate 31 to 5 hai reverse gate 31 low voltage quasi-shirt group =: ^: ^ 34 is converted into - the base of the transistor 32 receives the control signal C4, the collector of the auxiliary auxiliary transistor 32 is connected to the ground, and the collector of m is connected to the hybrid transistor 21<_, crystal 21 The charge between the base and the emitter junction is quickly assisted by the power 32 and released to the ground. Thereby, the auxiliary body is extinguished. 3 first - the polar body 4 will quickly turn from the eight words without inventing The first embodiment assists the control circuit 3 to assist the main control circuit 2 when driving the light-emitting diode 1 'at the anode of the light-emitting diode 4 (also for controlling the electric crystal) The driving waveform of the milk of the milk 1 is controlled, whether the control transistor 2 is controlled to be in the i or off state, the light emitting diode 4 can be turned on immediately at the positive edge ul of the driving waveform; When the edge u2 is located, the light-emitting diode enters an open state. In addition, the control transistor 21 of the driving unit of the present invention can select a field effect transistor (FET), and the control terminal 211, The input end 212 and the output end 213 respectively correspond to the inter-polar pole 2, the drain pole and the source symbol name. Similarly, the auxiliary transistor 32 can also be used as the fet, and the auxiliary control terminal 32 is auxiliary input terminal 322 · and auxiliary The output terminal 323 is also a gate, a drain, and a source. Since the circuit connection and the circuit operation principle are the same as those in the case of selecting a BJT, the details are not described herein. Please refer to FIG. 9 for the disclosure of the present invention. The light-emitting device of the second embodiment is a driving material for the polar body display device. The auxiliary control circuit 3 of the second embodiment is further provided with a multiplexer 33 and a de-multi-guard 34 as compared with the first embodiment. Further speaking, 'the second embodiment and the second The circuit structure of the embodiment is different in that the input end 311 of the reverse gate 31 is connected to the control terminal 211 of each control transistor 21 through the multiplexer 33; and the auxiliary terminal 322 of the auxiliary transistor 32 transmits the solution The multiplexer 34 is connected to the wheel-out terminal 2B of each of the control transistors 21. The multiplexer 33 is an n-input-output multiplexer (such as an 8-to-1 multiplexer) having a plurality of inputs The output terminal 丫 and a selection input terminal group S. The multiplexer 34 is an input-to-n output multiplexer (such as a 1-to-8 demultiplexer) having an input terminal D and a plurality of output terminals. X(0)~X(nl) and a selection input group r. j. Referring again to FIG. 9, the output control terminals P(0), p(l), ..., or P(nl) of each of the drive control elements 1, the control terminals 211 of the control transistors 21, and the multiplexer. One of the input terminals Z(0), z(1), ... or z(nl) of the device 33 is connected in common; the output terminal γ of the multiplexer 33 is connected to the input terminal 311 of the reverse gate 31; The drive control element i additionally has an address input group ADDR, which is connected to the selection input group S of the multiplexer 33. Referring to FIG. 9 again, the input terminal 322 of the auxiliary transistor 32 of the auxiliary control circuit 3 is connected to the input terminal D of the demultiplexer 34; the individual output terminals of the solution multi-function 34 ( 〇), X(1), ... or χ(η_ι) are respectively connected to the output terminal 213 of the control transistor 21 of each main control circuit 2; likewise, the address input terminal group ADDR of the drive control element 1 is also connected to the solution The selector 34 selects the input group r. By adding the multiplexer % and the solution multi-200917191, =34, the first embodiment of the present invention can control a plurality of main control circuits 2 by using only one auxiliary control circuit 3, thereby controlling the brightness of several light-emitting diodes 4 Off. Thereby, in addition to the effects of the first embodiment, the second embodiment can also reduce the installation unit volume and cost. Referring again to Fig. 9, the circuit operation principle of the driving unit of the second embodiment of the present invention will be described in detail below. When the output control terminals P(9), P(l), ... or pw) of the drive control element are to sequentially generate a control signal, the output control terminals p(〇), PQ of the drive control element 1 are first driven. ), or P(nl) encodes the address using the binary, for example, the number of output control terminals P(〇)~卩(4) of the drive control element 1 is 8, and the first output control knows P(0) That is, coded as (〇〇〇)2, when the output control terminal j> (〇) generates a control signal, the coded value is transmitted to the multiplexer 33 and the solution through the address input terminal group ADDR. The multiplexer 34 is configured such that the multiplexer 33 can selectively connect the input terminal Z(0) and the output terminal γ to each other, and the demultiplexer 34 also synchronously selects the input terminal D and the output terminal X(0). They are connected to each other, and thus, the same LED operation can be controlled to turn on or off the corresponding LEDs 4 as in the first embodiment. Furthermore, if the control signal is sequentially generated by the drive control element 丨 the remaining output control terminals P(1) to Ρ(η·1), the above-mentioned circuit operation principle can also be achieved as described above. The driving medium of the conventional light-emitting diode display device is provided by the auxiliary control circuit 3 to assist the main control circuit 2 in performing the annihilation control of the light-emitting diode 4, which can surely improve the driving of the light-emitting diode The waveform 'in turn increases the accuracy of the control. Although the present invention has been disclosed using the above preferred embodiments, it is not used for -12 - 200917191

限定本發明,任何熟習此技藝者在不脫離本發明之精神和矿 =之内,相對上述實施例進行各種更動與修改仍屬本發明= 為因準此本發明之保護範圍當視後附之申請專 —13〜 200917191 【圖式簡單說明】 第1圖:習用發光二極體顯示裝置之驅動單元之電路示 思圍。 ^ ㈢川货尤一租遐顯不裝置之驅動單元之雷曰, 開關接收-負緣轉態之控制信號之控制示意圖。 日日) 極Hi1制發光&quot;極體顯稀置之絲單元之發光. 極體之驅動波形示意圖。 動二;^第-實施例之發光二極體顯示裝置之 第5目:本發明第—實施例之發光二極體顯示裝置之」 控制電路及辅助控制電路之細部電路示意圖。 —</ RTI> </ RTI> </ RTI> </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> </ RTI> </ RTI> </ RTI> <RTIgt; Application for special -13~ 200917191 [Simple description of the diagram] Figure 1: Circuit diagram of the drive unit of the conventional LED display device. ^ (3) The Thunder of the drive unit of the Chuan-Kan-Yun-Yan-Yu-Xuan-Xuan-Xuan-Xuan-Xuan-Xuan-Xun---------------------------------------------- Day and day) The light of the Hi1 system is illuminated by the polar body. The driving waveform of the polar body is schematic. [Embodiment 2] The light-emitting diode display device of the first embodiment is a schematic diagram of a detailed circuit of the control circuit and the auxiliary control circuit of the light-emitting diode display device of the first embodiment of the present invention. -

第6 ® .本發明第—實施例之發光二極軸示裝 控制示意圖- 第7圖:本發明第—實施例之發光二極體顯示 控制電晶體操作成斷開狀態及輔助電晶體操作成導通; 之控制示意圖。 控作成導通狀態及輔助電晶體操作成斷開緣 第8圖:本發明第—實施狀發光二極軸示裝置 光二極體之驅動波形示意圖。x 第9圖:本發明第二實施例之發光二極體顯稀置之驅 動單元之電路示意圖。 · 【主要元件符號說明】 1驅動控制元件 2主控制電路 —14 — 200917191 21 控制電晶體 211 212 輸入端 213 22 限流電阻 3 31 反閘 311 312輸出端 32 321 辅助控制端 322 323 輔助輸出端 33 34 解多工器 4 91 驅動控制元件 92 93 發光二極體元件 94 Y 輸出端 Cs S 選擇輸入端組 Cl D 輸入端 C2 R 選擇輸入端組 C3 Vcc 電源 C4 ul 正緣 u2 控制端 輸出端 辅助控制電路 輸入端 辅助電晶體 辅助輸入端 多工器 發光二極體 電晶體 限流電阻 寄生電容 控制信號 控制信號 控制信號 控制信號 負緣 P(0)〜P(n-l) 輸出控制端 X(0)〜X(n-l) 輸出端 Z(0)〜Z(n-l) 輸入端 ADDR 位址輸入端組 —15 —6th. The schematic diagram of the light-emitting diode display control of the first embodiment of the present invention - FIG. 7: The light-emitting diode display of the first embodiment of the present invention controls the operation of the transistor to be in an off state and the auxiliary transistor is operated. Conduction; control schematic. The control is made into a conducting state and the auxiliary transistor is operated as a broken edge. Fig. 8 is a schematic view showing the driving waveform of the photodiode of the first embodiment of the present invention. x Fig. 9 is a circuit diagram showing the driving unit of the light-emitting diode of the second embodiment of the present invention. · [Main component symbol description] 1Drive control component 2 main control circuit—14 — 200917191 21 Control transistor 211 212 Input terminal 213 22 Current limiting resistor 3 31 Reverse gate 311 312 Output terminal 32 321 Auxiliary control terminal 322 323 Auxiliary output terminal 33 34 Demultiplexer 4 91 Drive control unit 92 93 LED component 94 Y output Cs S Select input group Cl D Input C2 R Select input group C3 Vcc Power supply C4 ul Positive edge u2 Control terminal output Auxiliary control circuit input terminal auxiliary transistor auxiliary input terminal multiplexer LED transistor current limiting resistor parasitic capacitance control signal control signal control signal control signal negative edge P(0)~P(nl) output control terminal X(0 )~X(nl) Output Z(0)~Z(nl) Input ADDR Address Input Group—15 —

Claims (1)

200917191 、申請專利範圍 1、一種發光二極體顯示裝置之驅動單元,其包含: 主控制電路’其具有一控制電晶體及一限流電阻,該 控制電阳體、限流電阻與—發光二極體串聯連接,該控 制電阳體具有-控制端、—輸人端及—輸出端,該控制 電B曰體之控制端連接到—驅動控制元件之其中之一輸出 控制端’該控制電晶體之輸人端連接到—電源,該控制 電晶體之輸出端連接到一發光二極體之一陽極端;及 辅助控制電路,其具有一反閘及一辅助電晶體,該反 閘具輸人端及-輸出端,該辅助電晶體具有一輔助 f制端獅輸人端及—辅助輸出端,該反閘之輸入 ,連接該控制電晶體之控制端,該反閘之輸丨端連接該 ,助電晶體之辅助控制端’該輔助電晶體之辅助輸入端 山,該控制電晶體之輸出端,該獅電晶體之辅助輸出 鳊連接到接地端。 2、二種發光二極體顯示裝置之驅動單元,其包含: 二:制電路’其具有一控制電晶體及一限流電阻,該 晶體、限流電阻與—發光二極體串聯連接, 雷^體具有—控制端、—輸入端及一輸出端,該^ ,曰體之控制端連接到-驅動控制元件之其中之 ’該控制電晶體之輸入端連接到一電源,該二 ,曰曰體之輪出端連接到—發光二極體之—陽極端工1 工控制電路’其具有-反閘、-辅助電晶體、一 器及一解多工器,該反閘具有一輸入端及一輸出端了 200917191 该辅助電晶體具有—辅助控制端、 ;:r端,該輔助電晶懸之輔===:之 辅助輸入端及 輪 =接該控制電晶體之輸出端,該輔助電晶體^輔助 出端連接到接地端。 3、 依申請專利範圍第2項所 .w 一極體顯不裝置之驅 動早元’其中該多工器具有數個岭 八负數個輸入端、一輸出端及一 選擇輸入端組。 4、 依申。請專樣圍第3項所叙發光二極義示裝置之驅 動單凡,其巾該多XH之其中之—輸人端連接到各該控 制電晶體之控制端。 5、 依申請專利範圍第3項所述之發光二極體顯示裝置之驅 動單元,其中該多工器之輸出端連接到該反閘的輸入端 6、 依申請專利範圍第3項所述之發光二極體顯示裝置之驅 動單元’其中該多工器之選擇輸入端組連接到該驅動控 制元件之一位址輸入端組。 7、 依申請專利範圍第2項所述之發光二極體顯示裝置之驅 動單元,其中該解多工器具有一輸入端、數個輸出端及 一選擇輸入端組。 8、 依申請專利範圍第7項所述之發光二極體顯示裝置之驅 動單元,其中該解多工器之輪入端連接該輔助電晶體之 輔助輸入端。 —17 — 200917191 9、依申請專利範圍第7項所述之發光二極體顯示裝置之驅 動單元,其中該解多工器之個別輸出端連接到各該控制 電晶體之輸出端。 10、 依申請專利範圍第7項所述之發光二極體顯示裝置之驅 動單元,其中該解多工器之選擇輸入端組連接到該驅動 控制元件之一位址輸入端組。 11、 依申請專利範圍第1或2項所述之發光二極體顯示裝置 之驅動單元,其中該控制電晶體及辅助電晶體選自一雙 極性接面電晶體及一場效電晶體之一。 十 —18 —200917191, the scope of application patent 1, a driving unit of a light-emitting diode display device, comprising: a main control circuit 'having a control transistor and a current limiting resistor, the control electric body, current limiting resistor and - light two The pole body is connected in series, and the control electric male body has a control end, an input end and an output end, and the control end of the control electric B body is connected to one of the drive control elements, the output control end. The input end of the crystal is connected to the power source, the output end of the control transistor is connected to one of the anode ends of the light emitting diode; and the auxiliary control circuit has a reverse gate and an auxiliary transistor, and the reverse gate is input And the auxiliary transistor has an auxiliary f-system lion input end and an auxiliary output end, and the input of the anti-gate is connected to the control end of the control transistor, and the input end of the anti-gate is connected to the The auxiliary control terminal of the auxiliary transistor is the auxiliary input terminal of the auxiliary transistor, and the output terminal of the control transistor is connected to the ground terminal of the auxiliary output of the lion transistor. 2. A driving unit for two kinds of LED display devices, comprising: two: a circuit having a control transistor and a current limiting resistor, wherein the crystal and the current limiting resistor are connected in series with the light emitting diode, The body has a control terminal, an input terminal and an output terminal, and the control terminal of the body is connected to the drive control component, wherein the input end of the control transistor is connected to a power source, the second, The wheel end of the body is connected to the light-emitting diode-anode-end work control circuit, which has a reverse gate, an auxiliary transistor, a device and a demultiplexer, the gate has an input terminal and An output terminal is 200917191. The auxiliary transistor has an auxiliary control terminal, a :r terminal, an auxiliary input terminal of the auxiliary electro-optic suspension suspension ===: an auxiliary input terminal and a wheel = an output terminal of the control transistor, the auxiliary electric device The crystal ^ auxiliary output is connected to the ground. 3. According to item 2 of the patent application scope, the driving unit of the one-pole display device has a plurality of ridges and eight negative input terminals, an output terminal and a selection input terminal group. 4, Yi Shen. Please refer to the driver of the illuminating diode display device in the third section. The towel is connected to the control terminal of each control transistor. 5. The driving unit of the light-emitting diode display device according to claim 3, wherein the output end of the multiplexer is connected to the input terminal 6 of the reverse gate, according to the third item of the patent application scope. A driving unit of the LED display device wherein the selection input group of the multiplexer is connected to one of the address input groups of the drive control element. 7. The driving unit of the LED display device of claim 2, wherein the demultiplexer has an input terminal, a plurality of output terminals, and a selection input terminal group. 8. The driving unit of the light-emitting diode display device according to claim 7, wherein the wheel-in terminal of the demultiplexer is connected to the auxiliary input terminal of the auxiliary transistor. The drive unit of the LED display device of claim 7, wherein the individual outputs of the demultiplexer are connected to the output terminals of the control transistors. 10. The driving unit of the LED display device according to claim 7, wherein the selection input group of the demultiplexer is connected to one of the address input groups of the driving control element. The driving unit of the light-emitting diode display device according to claim 1 or 2, wherein the control transistor and the auxiliary transistor are selected from one of a dual polarity junction transistor and a field effect transistor. Ten — 18 —
TW96138231A 2007-10-12 2007-10-12 Driving unit for displaying apparatus with light emitting diode TW200917191A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109217272A (en) * 2018-11-07 2019-01-15 东莞铭普光磁股份有限公司 A kind of APD optical module and its protection circuit and guard method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109217272A (en) * 2018-11-07 2019-01-15 东莞铭普光磁股份有限公司 A kind of APD optical module and its protection circuit and guard method

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