201114331 六、發明說明： 【發明所屬之技術領域】 本發明關於-種靜電放電保 的靜電放電保護電路。 尤扎一種可有效吸收靜電 【先前技術】 靜電在日常生活中無處不在。 / 到，但它可能足以使電路巾的某=些靜電人雜難感覺得 晶片等，功能發生異常或擊穿件’例如電晶體、控制 易受到靜電_響。當有帶㈣訊號處理電路更容 損壞。因此，如何提高電路的穩定性， 減夕零料良料發生’乃成為現今極為重要的課題。 除提高料本相質量外’其外嶋電放電倾電路也很重 要。早期-般是通過二個二歸將電壓箝位在某—點，如零電壓 (接地）、電《壓等。這樣如果當靜魏大時，就报容易在二極 管兩端出現電1過高而損壞二極管，而失去靜電放電保護作用， 進而：!：接影響電路正常I作’甚至損壞電路板上的電子元件。 請參閱圖1，圖1為以應用於液晶顯示器上之習知靜電放電保 護電路1為例的示意圖。以下僅針對繪示於圖上中的靜電放電保 護電路1做說明，而繪示於圖1中的其它電路架構為習知液晶顯 示器的基本架構’在此不再贅述。如圖1所示，習知液晶顯示芎 包含四個靜電放電保護電路1，且三個RGB訊號線以及一個VGA 訊號線分別連接於四個靜電放電保護電路1。由於四個靜電放電保 瘦電路1的電路架構皆相同，以下針對單一靜電放電保護電路1 做說明。 201114331 如圖1所示，靜電放電保護電路i是由二個二極管ι〇 及一個電容14 k成。VGA縣訊號加在二極管10、12的接腳16 ^ = 18連接魏端GND，且接㈣連接於電源端似。正 i不月動Γί個二極管10、12都反偏而截止，靜電放電保護電路 s 虽一個負的異常電壓加到電路板時，二極管10合被導 通’接腳16的電壓就會被箝位在零電壓（接地）。另二，告 的騎·加到，二極f 12會 二 的放果以減少對電源端VCC的影響。 從上述關於靜電放電保護電路i 一接㈣的電壓控：零= 以達到保倾級電路（baek_endeircuit)的仙。 t電較大就會通過訊號_晶顯示_電路板上，而很容 易出現電子元件損壞的情況。 【發明内容】 因此，本發明的目的之-在於提供—種靜 其利用多個穩壓電路有效吸收靜電，以解決上述問題;， 根據-實酬，本發明之靜電放魏護電路包含複 電;、H恤。峨電路並= 一％源端與-地端之間。第-二極管之正極連接於電源端，且第 一二極管之負極連接於複數個穩壓電路。第二二 中 於複數個_路，且第二二極管之極連接 根據另-實施例’如果靜電屬於高頻電壓，本發明之靜電放 201114331 電保§蒦電路可另白八— 聯，且此°RC電路與複數個穩塵電路並 包路連接於電_魏端之間。 ㈣’如果電源歧流電，本發明之靜電放^ 護電路可另包含—第三 =月之^放電保 負極連拉趴〜 知以及-第四二極管。第三二極管之 連接於喊個穩壓電路與電 第四二極營之备扠口仿 蚀&之正極連接於 與地端。、…細二極管之正極連接於複數侧壓電路 本’如_屬於_壓且_交流電， 之電放電保護電路可另包含—RC電路、—第三二極管以 ^四―極管。RC電路與複數個讎電路並聯，且Rc電路連 接、源端與地端之間。第三二極管之負極連接於 端’第三二極管之正極連接於如二極管之負極，且第四；^ 之正極連接於RC電路與地端。 ”關於本發明之優點與精神可以藉由以下的發明詳述及所附圖 式得到進一步的瞭解。 【實施方式】 清參晒2’® 2為根據本發明第-實施例之靜電放電保護電 路3之示意圖，圖2所示，靜電放電保護電路3包含複數個穩 壓電路30a、30b、30c、…、30η、一第一二極管32、一第二-極 官34、一旁路電容36以及一穩壓二極管38。複數個穩壓電路 30a-30n並聯於一電源端VCC與一地端GND之間。第一二極管 32之正極連接於電源端VCC，且第一二極管32之負極連接於複 數個穩壓電路30a-30n。第二二極管34之正極連接於複數個穩壓 電路30a-30n ’且第二二極管34之負極連接於地端gnd。旁路電 201114331 容^的-端連接於第一二極管32之正極與電源端vcc，且旁路 •电谷^6的另端連接於第二二極管34之貞極與地端GND。穩屋 -二極管38的—端連接於該第—二極管32之正極與電源端vcc， 且穩塵二極管38的另一端連接於第二二極管34之負極與地端 GND。 於此實施例中，每一個穩壓電路3〇a、3〇b、3〇c、...、3〇n分 別包含-穩壓二極管300a、300b、施、…、300n以及一電阻她、 302c 、3G2n。電阻3G2a-3G2n分別連接於電源端vcc •與穩壓二極管3〇〇a_3〇0n之負極之間，且穩壓二極管3〇〇3_她之 ，極分別連接於地端GND，於實際應财，若認為只用懸二極 官300a-300n單獨穩壓，供電電流較不符合需求，便可如此實施例 般加上電阻302a-302n作為限流之用，以保護穩壓二極管 30=a 300η不被損壞。電阻3〇2a-302n的阻值是由供電電壓、穩壓 電壓、負載電流、穩壓二極管電流等共同決定。此外，於此實施 例中，穩壓二極管300a-300n可藉由一般所謂的齊納二極管（Zener diode)來實現；而於本發明的其他實施例中，則可視需求而利用 籲其它具有穩壓效果的電子元件來實現。 需說明的是，本發明之穩壓電路30a_30n並不以圖2所繪示的 電路架構為限。舉例而言，如果加在穩壓二極管3〇〇a_3〇〇n的電壓 不高的情況下’穩壓電路30a-30n亦可只用穩壓二極管300a_3〇〇n 來穩壓’而不設置電阻3〇2a-302n。此外，電阻302a-302n亦可串 接於穩壓二極管300a-300n之負極與地端GND之間。換言之，穩 壓電路30a-30n的設計’除了穩壓二極管3〇〇a_3〇〇n為基本元件 外’可視實際應用而調整。 圖2所繪示的靜電放電保護電路3適用於電源為直流電且靜 201114331 電為中低頻·的情況。一般設置有靜電 裝置的訊號線（如圖1幅RGB訊號綠、⑨路3的電子 子裝置的訊觀），是從靜電放電保魏路喊線或其它電 靜電放電保護電路3中，每一個 =接入。在 -η，其中靠近電源端VCC與地端 大於遠離電《 VCC與地端GND之髓電路；;卿值， =穩壓储大於電源端vcc之電顧。換言之，於此實 電源端VCC之電驗與值νι·νη間的相 VCC<Vl<V2<V：3<...<Vn。 以了表不為. 以下分·綱當靜電顆為科，靜魏· 工作原理。 1、 正常工作階段：當靜電電壓介於(Vcc 〇7v^ 之間 時’電路正常工作’且靜電放電保護電路3不動作。需說明的是， 上述0.7V為-般穩塵二極管的輸入電壓，僅作為說明之用，本發 明不以此為限。 2、 VI階段：當靜電電屢介於(Vcc+〇7v^ %之間時，第 一二極管32截止，第二二極管34導通，此時穩壓電路3〇a的穩 壓二極管300a導通，靜電能量由穩壓電路3〇a吸收掉。 3、 V2階段：當靜電電壓介於V2與V3之間時，第一二極管 32截止，第二二極管34導通，此時穩壓電路3〇a、3肋的穩壓二 極管300a、300b導通’靜電能量由穩壓電路3〇a、3〇b吸收掉。 4、 V3階段：當靜電電壓介於V3與V4之間時，第一二極管 32戴止，第二二極管34導通’此時穩壓電路3〇a、3〇b、3〇c的穩 壓二極管300a、300b、3〇〇c依序導通，靜電能量由穩壓電路3〇a、 3〇b、30c吸收掉。 201114331 5、V3至Vn階段的工作原理依此類推，在此不再贅述。 以下分階段說明當靜電電壓為負時，靜電放電保護電路3的 工作原理。 1、 正常工作階段：當靜電電壓介於0乂與_0.7¥之間時，電路 正常工作’且靜電放電保護電路3不動作。 2、 VI階段.當靜電電壓介於:〇.7V與-(V1-VCC)之間時，第 二二極管34截止，第一二極管32導通’此時穩壓電路3〇a的穩 壓二極管300a導通，靜電能量由穩壓電路3〇&吸收掉。 3、 V2階段：當靜電電壓介於_^_¥〇€)與_(V2 VCC)之間時， 第二二極管34戴止，第一二極管32導通，此時穩壓電路3〇&、3肋 的穩壓二極管300a、300b導通，靜電能量由穩壓電路3〇a、3〇b 吸收掉。 4、 V3階段：當靜電電壓介於·(ν2_να：)與_(V3 VCC)之間時， 第二二極管3錢止’第-三極管32導通，此_壓電路n 30c的穩壓二極管300a、300b、300c依序導通，靜電能量由穩壓 電路30a、30b、30c吸收掉。 5、 V3至Vri階段的工作原理依此類推，在此不再贅述。 綜上所述，無論靜電電壓為正或負，當靜電電壓愈強，導通 的穩壓電路就愈多’只要合理的設定穩壓電路3〇a3〇n的穩壓二極 管300a-300n _壓值vl_Vn，靜電能量就會依序被穩壓電路 30a-30n吸收掉。此外，當靜電的瞬間電壓過大時，第一二極管犯 與第二二極管34具有隔離的效果，進而確保整個系統可以正常工 作。再者，當靜電或其它能量在-單位時間内，同時產生正負電 壓時，大部分的能量可在穩麗電路30a_30n Μ自行茂放或吸收，可 有效防止大能量流Ε、干擾系統電路，進而確保電路安全。 201114331 此外，旁路電容36具有清 而懸二極的雜訊 如果有外部異常能量，觀二 裝置尚未開機時 cc ^.ir^-ο,ν^ , V( 請參閱圖3’圖3為根據本發明第二實施例 路5之不意圖。靜電放電保護電路5與前述的靜:電保護電 的主要差別在於靜電放電保護電路5更包人呆護電路3 所示，RC電㈣編魏並^，_ =如圖3 端似_ _之間。需說明的是，圖?== =示相同標號的元件，其結構、作用原理皆相同，在再^中 電路50的電容500可吸收的靜電能量以v〇表示，則‘ 電源端vcc之賴值與穩壓值vl Vn間的 vcc<vo<Vi<V2<V3<...<Vn。 表不為.201114331 VI. Description of the Invention: [Technical Field] The present invention relates to an electrostatic discharge protection circuit for electrostatic discharge protection. One of them can effectively absorb static electricity. [Prior Art] Static electricity is ubiquitous in daily life. / Yes, but it may be enough to make some of the electrical insulation of the circuit towel feel the wafer or the like, the function is abnormal or the breakdown member such as the transistor, the control is susceptible to static electricity. When there is a (four) signal processing circuit, it is more damaged. Therefore, how to improve the stability of the circuit and reduce the occurrence of good materials has become an extremely important issue today. In addition to improving the quality of the material phase, the external electric discharge circuit is also important. In the early days, the voltage was clamped to a certain point by two two-way, such as zero voltage (grounding), electric "voltage, etc." In this way, if the static Wei is large, it is easy to cause the electric 1 to be too high at both ends of the diode to damage the diode, and the electrostatic discharge protection is lost, and then: the influence circuit is normal, and even the electronic components on the circuit board are damaged. Please refer to FIG. 1. FIG. 1 is a schematic view showing a conventional electrostatic discharge protection circuit 1 applied to a liquid crystal display. The following is only for the electrostatic discharge protection circuit 1 shown in the figure, and the other circuit architecture shown in Fig. 1 is the basic structure of the conventional liquid crystal display', which will not be described herein. As shown in FIG. 1, the conventional liquid crystal display 包含 includes four electrostatic discharge protection circuits 1, and three RGB signal lines and one VGA signal line are respectively connected to the four electrostatic discharge protection circuits 1. Since the circuit configurations of the four ESD protection circuits 1 are the same, the following description will be directed to the single ESD protection circuit 1. 201114331 As shown in Figure 1, the ESD protection circuit i is formed by two diodes ι and a capacitor 14k. The VGA county signal is applied to the pins 16 and 12 of the diodes 10 and 12 to connect the Wei terminal GND, and the connection (4) is connected to the power supply terminal. The voltages of the diodes 10 and 12 are reversed and the ESD protection circuit s is clamped. When a negative abnormal voltage is applied to the circuit board, the voltage of the diode 10 is turned on. The voltage of the pin 16 is clamped. At zero voltage (ground). On the other hand, the rider's ride is added, and the second pole f 12 will be used to reduce the impact on the power supply VCC. From the above-mentioned voltage control of the electrostatic discharge protection circuit i (4): zero = to achieve the parallel circuit (baek_endeircuit). When the power is large, it will pass through the signal_crystal display_ on the circuit board, and it is easy to cause damage to the electronic components. SUMMARY OF THE INVENTION Therefore, the object of the present invention is to provide a static electricity that utilizes a plurality of voltage stabilizing circuits to effectively absorb static electricity to solve the above problems. According to the present invention, the electrostatic discharge protection circuit of the present invention includes a re-powered ;, H-shirt.峨 Circuit and = between 1% source and - ground. The anode of the first diode is connected to the power supply terminal, and the cathode of the first diode is connected to a plurality of voltage regulator circuits. In the second two, the plurality of diodes are connected, and the poles of the second diode are connected according to another embodiment. If the static electricity belongs to a high frequency voltage, the electrostatic discharge 201114331 of the present invention can be additionally white-connected. And the °RC circuit and a plurality of stabilizing circuits are packaged and connected between the electric terminals. (4) If the power supply is galvanically isolated, the electrostatic discharge circuit of the present invention may further include - the third = month ^ discharge protection negative connection 趴 ~ know and - the fourth diode. The third diode is connected to the voltage regulator circuit and the fourth pole of the fourth fork of the fork is etched & the anode of the anode is connected to the ground. The anode of the thin diode is connected to the complex side voltage circuit. The electric discharge protection circuit can be further included as an RC circuit, and the third diode is a quadrupole tube. The RC circuit is connected in parallel with a plurality of turns, and the Rc circuit is connected, between the source and the ground. The anode of the third diode is connected to the terminal. The anode of the third diode is connected to the cathode of the diode, and the anode of the fourth diode is connected to the RC circuit and the ground. The advantages and spirit of the present invention can be further understood by the following detailed description of the invention and the accompanying drawings. [Embodiment] Qingshen 2'® 2 is an electrostatic discharge protection circuit according to the first embodiment of the present invention. 3, the electrostatic discharge protection circuit 3 includes a plurality of voltage stabilizing circuits 30a, 30b, 30c, ..., 30n, a first diode 32, a second-pole 34, and a bypass capacitor 36. And a Zener diode 38. The plurality of voltage stabilizing circuits 30a-30n are connected in parallel between a power terminal VCC and a ground terminal GND. The anode of the first diode 32 is connected to the power terminal VCC, and the first diode 32 The negative pole is connected to a plurality of voltage stabilizing circuits 30a-30n. The anode of the second diode 34 is connected to the plurality of voltage stabilizing circuits 30a-30n' and the cathode of the second diode 34 is connected to the ground end gnd. The terminal end of the 201114331 is connected to the positive terminal of the first diode 32 and the power supply terminal vcc, and the other end of the bypass•electric grid 6 is connected to the drain of the second diode 34 and the ground terminal GND. - the end of the diode 38 is connected to the positive terminal of the first diode 32 and the power supply terminal vcc, and the stabilizing diode 38 The other end is connected to the negative terminal of the second diode 34 and the ground terminal GND. In this embodiment, each of the voltage stabilizing circuits 3a, 3〇b, 3〇c, ..., 3〇n respectively includes - Zener diodes 300a, 300b, ..., 300n and a resistor, 302c, 3G2n. The resistors 3G2a-3G2n are respectively connected between the power supply terminal vcc and the cathode of the Zener diode 3〇〇a_3〇0n, and are regulated. Diode 3 〇〇 3 _ her, the pole is connected to the ground GND, in the actual financial, if it is considered that only the suspension diode 300a-300n is separately regulated, the supply current is less than the demand, it can be like this example The resistors 302a-302n are used as current limiting to protect the Zener diode 30=a 300n from being damaged. The resistance of the resistor 3〇2a-302n is determined by the supply voltage, the regulated voltage, the load current, and the Zener diode current. In addition, in this embodiment, the Zener diodes 300a-300n can be implemented by a so-called Zener diode; in other embodiments of the present invention, the use can be utilized as needed. Other electronic components with voltage regulation effect are realized. The voltage stabilizing circuit 30a_30n is not limited to the circuit architecture shown in Fig. 2. For example, if the voltage applied to the Zener diode 3〇〇a_3〇〇n is not high, the voltage stabilizing circuit 30a-30n It is also possible to use only the Zener diodes 300a_3〇〇n to regulate 'without the resistors 3〇2a-302n. In addition, the resistors 302a-302n may be connected in series between the cathodes of the Zener diodes 300a-300n and the ground GND. In other words, the design of the voltage stabilizing circuits 30a-30n 'in addition to the Zener diodes 3〇〇a_3〇〇n being basic components' can be adjusted depending on the actual application. The ESD protection circuit 3 shown in FIG. 2 is suitable for the case where the power source is DC power and the static 201114331 is medium and low frequency. Generally, there are signal lines of electrostatic devices (such as the RGB signal green, 9 channel 3 electronic sub-devices), which are from the electrostatic discharge Bao Wei Road shout line or other electric electrostatic discharge protection circuit 3, each = access. In -η, where the VCC and the ground terminal near the power supply terminal are larger than the power supply circuit of the VCC and the ground GND; the value of the voltage is greater than that of the power supply terminal vcc. In other words, the phase between the electromotive voltage VCC and the value νι·νη is VCC<Vl<V2<V:3<...<Vn. Take the table is not. The following points · outline when the electrostatic particles for the branch, Jing Wei · working principle. 1. Normal working phase: When the electrostatic voltage is between (Vcc 〇7v^ 'the circuit works normally' and the ESD protection circuit 3 does not operate. It should be noted that the above 0.7V is the input voltage of the general damp diode. For the purpose of illustration only, the invention is not limited thereto. 2. Stage VI: When the electrostatic electricity is repeatedly between (Vcc + 〇 7v ^ %, the first diode 32 is turned off, the second diode 34 When it is turned on, the Zener diode 300a of the voltage stabilizing circuit 3〇a is turned on, and the electrostatic energy is absorbed by the voltage stabilizing circuit 3〇a. 3. V2 stage: when the electrostatic voltage is between V2 and V3, the first two poles The tube 32 is turned off, and the second diode 34 is turned on. At this time, the Zener diodes 300a and 300b of the voltage stabilizing circuit 3〇a and 3 are turned on. The electrostatic energy is absorbed by the voltage stabilizing circuits 3〇a and 3〇b. Stage V3: When the electrostatic voltage is between V3 and V4, the first diode 32 is worn, and the second diode 34 is turned on. At this time, the voltage stabilization circuits 3〇a, 3〇b, 3〇c are stabilized. The voltage diodes 300a, 300b, and 3〇〇c are sequentially turned on, and the electrostatic energy is absorbed by the voltage stabilizing circuits 3a, 3〇b, and 30c. 201114331 5. Work in the V3 to Vn stages The principle and the like are not repeated here. The following stages explain the working principle of the ESD protection circuit 3 when the electrostatic voltage is negative. 1. Normal working phase: When the electrostatic voltage is between 0乂 and _0.7¥ When the circuit works normally' and the ESD protection circuit 3 does not operate. 2. Stage VI. When the electrostatic voltage is between: 〇.7V and -(V1-VCC), the second diode 34 is turned off, first The diode 32 is turned on. At this time, the Zener diode 300a of the voltage stabilizing circuit 3〇a is turned on, and the electrostatic energy is absorbed by the voltage stabilizing circuit 3〇. 3. V2 stage: when the electrostatic voltage is between _^_¥〇 When between _(V2 VCC), the second diode 34 is worn, and the first diode 32 is turned on. At this time, the voltage stabilizing circuit 3〇&, the three-ribbed Zener diodes 300a, 300b are turned on, and the static electricity is turned on. The energy is absorbed by the voltage stabilizing circuits 3〇a, 3〇b. 4. V3 stage: When the electrostatic voltage is between ·(ν2_να:) and _(V3 VCC), the second diode 3 The transistor 32 is turned on, and the Zener diodes 300a, 300b, and 300c of the _voltage circuit n 30c are sequentially turned on, and the electrostatic energy is absorbed by the voltage stabilizing circuits 30a, 30b, and 30c. The working principle of the V3 to Vri phase is the same, and will not be repeated here. In summary, regardless of whether the electrostatic voltage is positive or negative, the more the electrostatic voltage is, the more the voltage regulator circuit is turned on. The Zener diodes 300a-300n_voltage value vl_Vn of the voltage stabilizing circuit 3〇a3〇n, the electrostatic energy is sequentially absorbed by the voltage stabilizing circuits 30a-30n. In addition, when the instantaneous voltage of the static electricity is too large, the first two poles The pipe is isolated from the second diode 34, thereby ensuring that the entire system can operate normally. Furthermore, when static electricity or other energy generates positive and negative voltages in a unit time, most of the energy can be self-expanded or absorbed in the stable circuit 30a_30n, which can effectively prevent large energy from flowing and interfere with the system circuit. Make sure the circuit is safe. 201114331 In addition, the bypass capacitor 36 has clear and suspended two-pole noise. If there is external abnormal energy, the cc ^.ir^-ο, ν^ , V is not turned on when the device is not turned on (see Figure 3 'Figure 3 for The second embodiment of the present invention is not intended. The main difference between the electrostatic discharge protection circuit 5 and the aforementioned static electricity protection is that the electrostatic discharge protection circuit 5 is further covered by the protection circuit 3, and the RC power (four) is edited. ^, _ = as shown in Figure 3 between _ _. It should be noted that the figure ? = = = the same number of components, the structure, the principle of action are the same, in the circuit 500 capacitor 500 can be absorbed The electrostatic energy is expressed by v〇, then the value of the power supply vcc and the voltage value vl Vn are vcc<vo<Vi<V2<V3<...<Vn.
圖所綠不的靜電放電保護電路5適用於電源為直流電且靜 電為南頻電壓（勤1GHz〜2GHz)穩況。Rc電路％在靜電 放電保護電路5巾^作原理說明如下。#靜電電麗介於 (電，與V0之間時，第一二極管％截止，第二二極管34 導通，此時靜電經過RC電路50的電容5〇〇、第二二極管34與地 端GND對電容5〇〇充電，在靜電消除後，電容5〇〇再對電阻jo] 放電。換言之，這段期間的靜電是由RC電路5〇吸收掉。 因此，於此實施例中，當有瞬間正負靜電脈衝產生時，會先 由RC電路50的時間常數吸收抵銷。當瞬間靜電脈衝時間超出Rc 電路50的時間常數時，則正電壓能量由穩壓電路3〇a 3〇n分階段 吸收掉，並且轉換成無害低頻能量，同步導流到地端GND上反 之’負電壓能量由穩壓電路30a-30n分階段吸收掉，並且轉換成無 201114331 害低頻能量’同步導流到電源端vcc上。於 路50可以防止靜電放電火花與雜訊的產生。、’〒、’、、用，RC電 請參^ 4,圖4驗據本發明第三實 路6之綠圖。靜魏電賴祕6與前^電 的主要差別在於靜電放電保護電路6更包含-第:放tf6〇t及 -第四二極管62。如圖4所示，第： —極s 60以及 電路編此與電源端vcc，第〇之負極連接於穩壓 極管62之負極，且第四二極势第^一 之正極連接於第四二 ►與地端GND。需說明的3 正極連接於穩I電路30a_30n 姐構、作用中與圖2中所示相同標號的元件， …，。構作用原理皆相同，在此不再贅述。 電為翻於魏為交流電且靜 常工作階段下，第三二極管6〇與第四: f = V1至Vn階段下，第三二極管6〇與第四 導通’再由穩塵電路30a_30n依序 電保護的效果。 n依序及收靜電能量，進而達到靜電放 路7 為根據本發明第四實施例之靜電放電保護電 的主要^I I放餘射路7與麵崎電放魏護電路3 if在於靜電放電保護電路7更包含一 RC電路50、-第 目60以及-第四二極管62。如圖5所示，rc電路5〇與穩 電路30a-30n並聯，且rc雷跋ςη^ & GND之間· 電路5〇連接於電源端VCC與地端 vc ，第一一木吕6〇之負極連接於RC電路50與電源端 四-心極管6〇之正極連接於第四二極管62之負極，且第 圖；f之正極連接於RC電路5〇與地端隱。需說明的是， "_ 2中所不相同標號的元件，其結構、作用原理皆相同， 201114331 在此不再贅述。 如前所述’由於靜電放電保護電路7同時具有RC電路5〇、 第三二極管60以及第四二極管62,因此靜電放電保護電路7適用 於電源為交流電且靜電為高頻電壓（例如1GHz〜2GHz)的情況。The electrostatic discharge protection circuit 5 of the green type is suitable for the power supply to be DC and the static electricity is the south frequency voltage (diligence 1 GHz to 2 GHz). The Rc circuit % is described in the principle of the electrostatic discharge protection circuit 5 as follows. #静电电丽Between (electricity, when between V0, the first diode is cut off, the second diode 34 is turned on, at this time, the static electricity passes through the capacitance of the RC circuit 50, the second diode 34 The capacitor 5 〇〇 is charged with the ground GND, and after the static electricity is removed, the capacitor 5 放电 discharges the resistor jo]. In other words, the static electricity during this period is absorbed by the RC circuit 5 。. Therefore, in this embodiment When an instantaneous positive and negative electrostatic pulse is generated, it is first offset by the time constant of the RC circuit 50. When the instantaneous electrostatic pulse time exceeds the time constant of the Rc circuit 50, the positive voltage energy is regulated by the voltage stabilizing circuit 3〇a 3〇 n is absorbed in stages and converted into harmless low-frequency energy, which is synchronously diverted to the ground GND. Otherwise, the negative voltage energy is absorbed by the voltage stabilizing circuits 30a-30n in stages, and converted into no-201114331 harmful low-frequency energy 'synchronous diversion On the power supply side vcc. On the road 50 can prevent the generation of static discharge sparks and noise., '〒, ',, use, RC power, please refer to ^ 4, Figure 4 according to the invention, the third real road 6 green map The main difference between Jing Wei's Lai Mi 6 and the former ^ electricity is the electrostatic discharge protection. The circuit 6 further includes - a: tf6 〇 t and - a fourth diode 62. As shown in Figure 4, the first: - s 60 and the circuit is programmed with the power supply terminal vcc, the second negative electrode is connected to the voltage regulator The anode of the tube 62 is connected to the fourth diode and the ground terminal GND. The anode of the cathode is connected to the stable I circuit 30a_30n, and the function is the same as that shown in FIG. The components of the label, ..., the structure of the principle are the same, will not be repeated here. The electric is turned into Wei for alternating current and the static working phase, the third diode 6〇 and the fourth: f = V1 to Vn stage Next, the third diode 6 〇 and the fourth conduction 再 are further electrically protected by the stabilizing circuit 30a_30n. n sequentially and collecting static energy, thereby reaching the electrostatic discharge 7 as according to the fourth embodiment of the present invention. The main ^II residual path 7 of the electrostatic discharge protection circuit and the surface acoustic wave protection circuit 3 if the electrostatic discharge protection circuit 7 further comprises an RC circuit 50, a target 60 and a fourth diode 62. As shown in FIG. 5, the rc circuit 5 is connected in parallel with the stabilization circuits 30a-30n, and between rc Thunder η^ & GND · Circuit 5 〇 is connected to the power supply terminal VC C and ground vc, the first one is connected to the anode of the RC circuit 50 and the power terminal four-core tube 6〇 is connected to the cathode of the fourth diode 62, and the figure; It is connected to the RC circuit 5〇 and the ground end. It should be noted that the components of the different numbers in "_ 2 have the same structure and function principle, 201114331 will not be repeated here. Since the discharge protection circuit 7 has the RC circuit 5A, the third diode 60, and the fourth diode 62 at the same time, the electrostatic discharge protection circuit 7 is applied to a case where the power source is an alternating current and the static electricity is a high frequency voltage (for example, 1 GHz to 2 GHz). .
$述靜電放電保護電路3、5、6、7皆可應用於任何電子農置 中’例如液晶顯示器、電視、監視器、電腦等。請參閱圖6，圖6 為根據本發明第五實施例之具有靜電放電保護電路3之電子裝置 的内部電路之示意圖。圖6所繪示的電路架構是以液晶顯示器為 例，但不以此為限。如圖6所示，訊號源8包含多個接腳，且每 一個接腳用以輸出一個對應的訊號。此外，四個靜電放電保護電 路7分別經由RGB訊號線以及VGA訊號線連接於訊號源8的對 應接腳。於此實施例中，四個靜電放電保護電路7共用一組旁路 電容36與穩壓二極管38，如圖6所示。靜電放電保護電路7的結 構設計與作關理如上所述，在此不再贅述。需說明的是，圖: 中的靜電放電保護電路7亦可以前述的靜電放電保護電路3、5、6 替換’視實際應用而定。 相較於先前技術’本發明之靜電放電保護電路大大減小了靜電 對ί路^響提㊅了電子裝置的抗干擾能力’使整機性能更加 穩定可靠’電路本身簡單城用靈活，只要合理的設計每一個穩 壓電路中的縣二極管的龍值，就可以魏.掉絕大部分擾 能量。 、 雖然本發顿前述之較佳實施·露如上，然其並義以限定 〆"明’任何熟習相像技藝者’在不脫離本發日月之精神和範圍内， 些許之更動與潤飾，因此本發明之專梅護翻須視本說 月曰所附之申請專利範圍所界定者為準。 201114331 【圖式簡單說明】 之習知靜電放電保護電路為例的 圖1為以應用於液晶顯示器 示意圖。 圖3為滅太㈣Λ施例之靜電放祕護魏之示意圖。 ^ :艮擄本發明第二實施例之靜電放電保護電路之示意圖。The electrostatic discharge protection circuits 3, 5, 6, and 7 can be applied to any electronic farm, such as liquid crystal displays, televisions, monitors, computers, and the like. Referring to Fig. 6, there is shown a schematic diagram of an internal circuit of an electronic device having an electrostatic discharge protection circuit 3 according to a fifth embodiment of the present invention. The circuit architecture shown in FIG. 6 is exemplified by a liquid crystal display, but is not limited thereto. As shown in FIG. 6, the signal source 8 includes a plurality of pins, and each pin is used to output a corresponding signal. In addition, four ESD protection circuits 7 are connected to the corresponding pins of the signal source 8 via RGB signal lines and VGA signal lines, respectively. In this embodiment, four ESD protection circuits 7 share a set of bypass capacitors 36 and Zener diodes 38, as shown in FIG. The structure design and the relationship of the electrostatic discharge protection circuit 7 are as described above, and will not be described herein. It should be noted that the electrostatic discharge protection circuit 7 in the figure: can also be replaced by the aforementioned electrostatic discharge protection circuit 3, 5, 6 'depending on the practical application. Compared with the prior art, the electrostatic discharge protection circuit of the present invention greatly reduces the anti-interference ability of the electronic device by the static electricity to improve the performance of the whole device. The circuit itself is simple and flexible, as long as it is reasonable. By designing the dragon value of the county diode in each of the voltage regulator circuits, it is possible to remove most of the disturbing energy. Although the above-mentioned preferred implementation of the present invention is as described above, it is intended to limit the 〆"Ming' of any familiar artisan's, without departing from the spirit and scope of the Sun, the slightest change and refinement, Therefore, the singularity of the present invention shall be subject to the definition of the scope of the patent application attached to this transcript. 201114331 [Simple description of the drawing] The conventional electrostatic discharge protection circuit is taken as an example. Fig. 1 is a schematic view of application to a liquid crystal display. Fig. 3 is a schematic diagram of the static electricity protection of Wei Tai (4). ^ : A schematic view of an electrostatic discharge protection circuit of a second embodiment of the present invention.
圖為根據本發明第三實施例之靜電放電保護電路之示意圖。 圖5為根據本發明第四實施例之靜電放電保護電路之示意圖。 圖6為根據本發明第五實施例之具有靜電放電保護電路 子裝置的内部電路之示意圖。 【主要元件符號說明】 1、3、5、6、7 8 10、12、32、34、60、62 14、500 16、18、20、40 30a-30n • 36 38 ' 300a-300n 50The drawing shows a schematic diagram of an electrostatic discharge protection circuit according to a third embodiment of the present invention. Figure 5 is a schematic diagram of an electrostatic discharge protection circuit in accordance with a fourth embodiment of the present invention. Fig. 6 is a view showing an internal circuit of an electrostatic discharge protection circuit sub-device according to a fifth embodiment of the present invention. [Description of main component symbols] 1, 3, 5, 6, 7 8 10, 12, 32, 34, 60, 62 14, 500 16, 18, 20, 40 30a-30n • 36 38 ' 300a-300n 50
302a-302n > 502 R、G、B ·、. VGA VCC GND 靜電放電保護電路 訊號源 二極管 電容 接腳 穩壓電路 旁路電容 穩壓二極管 RC電路 電阻 訊號線 電源端 地端302a-302n > 502 R, G, B ·, VGA VCC GND Electrostatic Discharge Protection Circuit Signal Source Diode Capacitor Pin Regulator Circuit Bypass Capacitor Zener Diode RC Circuit Resistor Signal Line Power Terminal Ground