' 1 201127196 六、發明說明：. 【發明所屬之技術領域】 本發明係關於一種操作方法，尤指一種應用於交流發 光二極體的操作方法。 【先前技術】 隨著光電科技的不斷發展，發光二極體(Light Emitting Diode’LED)已大量應用於各種領域。其中，傳統led晶片 均以直流電源驅動’在以交流電為主的一般生活環境中使 用時必須外加交流轉直流之控制電路以及降壓元件方可正 鲁 常操作’如此不僅增加製造成本’操作效率亦隨之降低。 因此，自2005年以來，陸續有廠商發表以交流電直接操作 之發光二極體(AC LED)晶片。 由於交流發光二極體本身具有一啟動電壓，於交流驅 動電壓超過啟動電壓時’交流發光二極體才開始導通發 光。此時，驅動發光二極體之驅動電流則會因啟動電壓而 變化成不同於正弦波波形的電流訊號，因此，使得交流發 光二極體之驅動電流的測定發生困難。並且，由於交流發 鲁 光一極體為電流驅動之元件，不同的驅動電流即會產生不 同的發光亮度，於檢測與篩選交流發光二極體時，若是無 法k供固定的驅動電流，會使得交流發光二極體的發光亮 度產生差異，可能會影響產品品質。 第一圖所示為交流發光二極體的應用電路圖。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation method, and more particularly to an operation method applied to an alternating current light-emitting diode. [Prior Art] With the continuous development of optoelectronic technology, Light Emitting Diode (LED) has been widely used in various fields. Among them, the traditional LED chip is driven by DC power supply. In the general living environment mainly based on AC power, it is necessary to add AC to DC control circuit and buck component to operate normally. This not only increases the manufacturing cost. It also decreases. Therefore, since 2005, manufacturers have successively published light-emitting diode (AC LED) wafers that operate directly on alternating current. Since the AC light-emitting diode itself has a starting voltage, the AC light-emitting diode starts to conduct light when the AC driving voltage exceeds the starting voltage. At this time, the driving current for driving the light-emitting diode changes to a current signal different from the sinusoidal waveform due to the starting voltage, so that measurement of the driving current of the alternating current emitting diode is difficult. Moreover, since the AC-emitting Lu-polar body is a current-driven component, different driving currents will generate different luminances. When detecting and screening the AC LED, if the driving current cannot be fixed, the AC will be exchanged. The difference in the brightness of the light-emitting diodes may affect the quality of the product. The first figure shows the application circuit diagram of the AC LED.
父流發光二極體的應用電路1具有一交流電源1〇、一 ; 交流發光二極體11以及一電阻12等元件以串聯的方式連 接。交流電源10可提供驅動電壓以驅動交流發光二極體U 4/14 201127196 發光，並可藉由電阻12調整流經交流發光二極體Η之驅 動電流。 第一圖所示為交流發光二極體的檢測電路圖。 • 檢測電路2為一交流電源10與待測交流發光二極體j j 串聯，並提供一交流驅動電壓及電流以進行測試。其中， 而要於一固疋的驅動電流條件基準上，才能夠對不同交流 發光二極體11的發光亮度作檢測、篩選與分級的動作 傳統的交流發光二極體n的檢測方法，係為利用試錯 • 法(try and error)的方式進行測試，其利用任意選擇一交流測 試電壓，施加於檢測電路2以測得對應之測試驅動電流， 且不斷地重複調整交流測試電壓測試，最終可得到一交流 測試電壓對應預定的測試電流。 改良之交流發光二極體丨丨的檢測方法，其係選擇一交 流發光二極體11作為一標準並進行量測以測得一預設驅動 電流(Inns)之峰值驅動電壓（Vp)再取得其峰值驅動電流 (Ip)，最後，即可利用此峰值驅動電流(Ip)對其他的交流發 • 力二極體11測試峰值驅動電壓(VP)。但是，若是選擇作為 標準的交流發光二極體u的電氣特性並非位於所有待測交 "ηΛ光-極體11的電性特性分佈的巾心、點，則會造成量測 數值的偏移。 【發明内容】 目此’本發明之目的在於解決上述先前技術之不便。 本毛月提出種父流發光二極體的操作方法而可以用 以預測-亥乂桃發光“極體工作於一預設驅動電流下之一電 /2進而可以進行後續操作。本發明之操作方法是將不同 5/14 201127196 的驅動電壓施加於該交流發光二極體以得出 流’並透過-内插法計算出該交流發光二極體動電 設驅動電流下之預測電壓。本發明之操作方法亦可 述驅動電壓和驅動㈣而得出該交流發光二極 ；^ 電壓特性曲線’藉此亦可得出該交流發光二極體工 預設驅動電流下之預測電壓。 本案發明人提出本案之發明概念，本發明之機_胃 公知技術截然不同，俾以提供一種交流發光二極體的操^ 方法，以促進產業升級。 *The application circuit 1 of the parent current LED has an AC power source 1 , an AC light-emitting diode 11 and a resistor 12 and the like are connected in series. The AC power source 10 can provide a driving voltage to drive the AC LED U 4/14 201127196 to emit light, and the driving current flowing through the AC LED can be adjusted by the resistor 12. The first figure shows the detection circuit diagram of the AC light-emitting diode. • The detection circuit 2 is an AC power source 10 connected in series with the AC light-emitting diode j j to be tested, and provides an AC drive voltage and current for testing. Among them, the detection method of the illumination brightness of different AC light-emitting diodes 11 can be detected, screened and graded on the basis of a solid current driving current condition. The conventional AC light-emitting diode n detection method is The test is performed by a try and error method, which uses an arbitrary selection of an AC test voltage, is applied to the detection circuit 2 to measure the corresponding test drive current, and continuously adjusts the AC test voltage test repeatedly, and finally An AC test voltage is obtained corresponding to a predetermined test current. The improved method for detecting an AC light-emitting diode is to select an AC LED 11 as a standard and measure to measure a peak driving voltage (Vp) of a predetermined driving current (Inns). Its peak drive current (Ip), finally, can be used to test the peak drive voltage (VP) of other AC power diodes 11 using this peak drive current (Ip). However, if the electrical characteristics of the AC light-emitting diode u selected as the standard are not located at the center or point of the electrical distribution of all the electrical characteristics to be measured, the measurement value will be shifted. . SUMMARY OF THE INVENTION The object of the present invention is to solve the inconvenience of the prior art described above. Ben Maoyue proposes a method for operating a parent-flowing light-emitting diode that can be used to predict - the operation of the 乂 乂 “ “ “ 极 极 工作 工作 工作 工作 工作 工作 工作 工作 工作 工作 工作 工作 工作 工作 。 。 。 。 。 。 。 。 。 。 The method is to apply a driving voltage of different 5/14 201127196 to the alternating current light emitting diode to obtain a flow 'and pass-interpolate method to calculate a predicted voltage under the alternating current driving current driving current. The operation method can also describe the driving voltage and driving (4) to obtain the AC light emitting diode; ^ the voltage characteristic curve ' thereby obtaining the predicted voltage under the preset driving current of the AC light emitting diode. The inventor proposes In the inventive concept of the present invention, the machine of the present invention has a completely different technique, and provides a method for operating an alternating current LED to promote industrial upgrading.
因此，透過本發明之操作方法可以準確且快迷地對大 量的交流發光二極體進行檢測與後續相關操作’據此可以 提供穩定的實際驅動電流以統一測試的基礎，並進行產品 等級的篩選與分級的動作，提昇產品品質。 以上之概述與接下來的詳細說明及附圖，皆是為了能 進一步說明本發明為達成預定目的所採取之方式、手段及 功效。而有關本發明的其他目的及優點，將在後續的說明 及圖式中加以闡述。Therefore, through the operation method of the present invention, a large number of AC light-emitting diodes can be detected accurately and quickly, and subsequent related operations can be provided, thereby providing a stable actual driving current for uniform testing and screening of product grades. Improve the quality of products with grading actions. The above summary, the following detailed description and the annexed drawings are intended to further illustrate the manner, the Other objects and advantages of the present invention will be described in the following description and drawings.
【實施方式】 第三圖所示為交流發光二極體工作於工作區的電流電 壓特性曲線圖。 第四圖所示為根據本發明實施例之交流發光二極體的 操作方法。 如第三圖所示，其中的兩條曲線分別對應不同電性特 性的交流發光二極體11，其具有不同的驅動電壓與驅動電 流的特性。由於一般交流發光二極體U工作於工作區的電 6/14 201127196 流電壓特性(Irms-Vp curve)為一接近線性的曲線。因此，倘 若假設其僅為簡單線性關係，在此線性關係的條件下，若 是需要預測交流發光二極體^之固定的驅動電流與一 • f壓關係，僅制用簡單的數學計算方法，配合上兩個 • $考驅動電壓與騎電流的數值，即可求得。配合上此種 假設，本發明可簡單利用一計算公式，計算得到一較為接 近的驅動電壓或是驅動電流的數值，雖然其數值不完全正 確’但是差距亦不大，可用以作為實際量測時的參考。 • 根據本發明之方法，可藉由如第二圖所示之交流電源 10提供-第-驅動電壓(Vfl)，施加於交流發光二極體η 的檢測電路2，即可量測對應於交流發光二極體u之一第 一驅，電流_，如步驟S41所示。其中，第一驅動電壓(vfi) 為-交流電壓訊號，以及第二驅動電流⑽)為—交流電流訊 唬。再藉由交流電源10提供一第二驅動電壓(νΩ)，施加於 檢測電路2，即可量測得對應於交流發光二極體u之一第 二驅動電流(ΙΩ)，如步驟S42所示，其中，第二驅動電壓(vf2) 鲁為一交流電壓訊號，且其電壓不同於第一驅動電壓(Vfl” 以及第二驅動電流(If2)為一交流電流訊號。此外，根據前揭 假設，由於交流發光二極體u導通於工作區後的驅動電流 與驅動電壓之特性為一線性關係，即可利用内插法計算， 可得到預設驅動電流(irms)所對應之第三驅動電壓(Vrms)， 如步驟S43所示，第三驅動電壓為交流發光二極體u工作 在預設驅動電流(lrms)下之預測電壓，且此第三驅動電壓 (Vrms)亦為一交流電壓訊號。 此外’利用此第三驅動電壓(Vrms)即可對其他所有具有 相同電性特性的交流發光二極體11進行後續的操作，像是 7/!4 201127196 量測 '測試或驗證，如步驟S44戶斤*。而將此第三驅動電 壓(Vrms)施加於交流發光二極體u所測得之實際驅動電流 (Irms )’可做為預設驅動電流與實際驅動電流的比對，以驗 ，測試條件的正確性。其中，若是測試條件維持正常，則 實際驅動電流(irms，)會與預設驅動電流(Irms)接近或相同。 本發明之第三驅動電壓(Vrms)與預設驅動電流(Irms)之 對應之内插法的計算公式如下所示：[Embodiment] The third figure shows the current-voltage characteristic curve of the AC light-emitting diode operating in the work area. The fourth figure shows an operation method of an alternating current light emitting diode according to an embodiment of the present invention. As shown in the third figure, the two curves correspond to the alternating current illuminating diodes 11 of different electrical characteristics, which have different characteristics of driving voltage and driving current. Since the general AC LED U operates in the work area, the current voltage characteristic (Irms-Vp curve) is a nearly linear curve. Therefore, if it is assumed that it is only a simple linear relationship, in the case of this linear relationship, if it is necessary to predict the relationship between the fixed driving current of the AC light-emitting diode and the f-pressure, only a simple mathematical calculation method is used. The last two • $ test drive voltage and ride current value can be obtained. In conjunction with this assumption, the present invention can simply use a calculation formula to calculate a relatively close driving voltage or driving current value, although the value is not completely correct 'but the difference is not large, and can be used as the actual measurement time. Reference. According to the method of the present invention, the -first driving voltage (Vfl) can be supplied to the detecting circuit 2 of the alternating current light emitting diode η by the alternating current power source 10 as shown in the second figure, and the corresponding alternating current can be measured. The first drive of the light-emitting diode u, the current_, is as shown in step S41. The first driving voltage (vfi) is an alternating current voltage signal, and the second driving current (10) is an alternating current signal. Then, a second driving voltage (νΩ) is supplied from the AC power supply 10, and is applied to the detecting circuit 2, so that a second driving current (ΙΩ) corresponding to one of the AC light-emitting diodes u can be measured, as shown in step S42. The second driving voltage (vf2) is an alternating current voltage signal, and the voltage thereof is different from the first driving voltage (Vfl) and the second driving current (If2) is an alternating current signal. Further, according to the foregoing assumption, Since the driving current and the driving voltage characteristic of the AC light-emitting diode u are in a linear relationship, the interpolation can be used to calculate the third driving voltage corresponding to the preset driving current (irms). Vrms), as shown in step S43, the third driving voltage is a predicted voltage of the alternating current light emitting diode u operating at a preset driving current (lrms), and the third driving voltage (Vrms) is also an alternating current voltage signal. In addition, by using this third driving voltage (Vrms), all other AC LEDs 11 having the same electrical characteristics can be subsequently operated, such as 7/!4 201127196 measurement 'test or verification, as step S44 Households*. And this is the first The driving voltage (Vrms) applied to the AC driving diode u measured by the actual driving current (Irms) can be used as a comparison between the preset driving current and the actual driving current to verify the correctness of the test conditions. If the test condition remains normal, the actual drive current (irms,) will be close to or the same as the preset drive current (Irms). Interpolation of the third drive voltage (Vrms) of the present invention and the preset drive current (Irms) The calculation formula for the method is as follows:
Vrms = Vfl+ iy^-VflQxCIrms-Ifn m-ifi 根據上述之計算公式，僅需提供一第一驅動電遷⑽）籲 及第二驅動電壓(νβ)對交流發光二極體丨丨進行測試，並分 別量測得第一驅動電流㈣及第二驅動電流⑽)，即可利= 上述之計算公式，與一預設驅動電流(Irms)進行比較，即可 计异得到一第三驅動電壓(Vrms)。即可將此第三驅動電厥 (Vrms)施加於交流發光二極體的檢測電路2以對其他具^ 相同電性特性之交流發光二極體n進行後續的特性測^ 相關操作。 哥 、將此第三驅動電壓(Vrms)施加於交流發光二極體的檢鲁 測電路2,即可驗證交流發光二極體^之實際驅動電 (Irms’)與預設驅動電流(Irms)的差異。其中第一驅動電流: 第二驅動電流以及實際驅動電流係為流經交流發光二極 U之電流。 換言之，根據本發明之交流發光二極體的操作方法， 可利用交流發光二極體11導通於工作區之電流與電壓特性 為接近於線性的關係’因此可將交流發光二極體導通於工 作區之電流與電壓特性視為具有相同斜率的線性關係。即 8/14 201127196 是丄於此具有相同斜率的電流與電壓特性曲線中，可藉由 任，兩點之第-驅動電壓(vfl)及第二驅動電壓⑽二加 於，流發光二極體1丨，並制得其職之第—驅動電流则 • 及第二驅動電流(If2)。藉此，即可計算得到電流與電壓特性 曲_斜㈣(咖£2)/(修_。基於上述料·且再根據第 一驅動電壓(Vfl)、第一驅動電流(Ifl)與預設驅動電流 (Irms)，即可計算出與上述之内插法相同的計算公式。 值得一提的是，第一驅動電壓(Vfl)及第二驅動電壓 • (Vf2)的設定，可依據交流發光二極體11之規格值的上下 限，或是可用其他實驗的方法或是經驗法則來決定，例如： 預設驅動電流(Irms)設定於20mA，驅動電壓(Vrms)應落於 90 Vrms的附近，即可依照經驗法則或是實驗數據，適當調 整驅動電壓(Vrms)正負2 Vrms作為第一驅動電壓(vf 1)及第 二驅動電壓(Vf2)。且第一驅動電壓(Vfl)及第二驅動電壓 (Vf2)可為固定數值或是依照不同交流發光二極體有不同的 第一驅動電壓(Vfl)及第二驅動電壓(Vf2)的設定。並且，該 鲁 第三驅動電壓(Vrms)位於該第一驅動電(vfl)壓與該第二驅 動電壓(Vf2)之間’而第一驅動電壓(Vfl)及第二驅動電壓 (Vf2)的設定不應與第三驅動電壓(Vrms)差距過大，由於本 發明藉由假設交流發光二極體11導通於工作區後的驅動電 流與驅動電麼之特性為一線性關係。’實際上，驅動電流與 驅動電壓之特性僅是接近線性關係，因此，若是第一驅動 ' 電壓(Vfl)及第二驅動電壓（Vf2)的設定與第三驅動電壓 (Vrms)差距過大’則可能造成較大的誤差。 如第1表所示’為利用此種操作方法對>定數量（於 本例為150顆交流發光二極體）之交流發光二極體η進行 9/14 201127196 驗=所得到的數據。可得到-定數量之交流發光二極體11 所里測到的平均實際驅重力電流(irms，M 199】3 ，其最大 值j 2〇.6mA，最小值為]9 5 mA，標準差為〇 ，其甲， 預。又驅動電流細s)設定於—A。此數據較傳統的操作方 法决速簡潔，並且比改良之操作方法準確許多，從誤差百 刀，為0.43 /可驗證出利用本發明之操作方法確實可 使知實際_電離阳’)準確地落於預設驅動電流㈣s)的 附近’並且不會產生如前述改良之操作方法之量測數據偏 移的現象。 第1表所不為根據本發明之方法對一定數量之交流發 光二極體驗證的結杲統言_| 〇 實際驅動電流(irms，） 數值（mA) 誤差百分比 平均值(Averaee) 19.913 -0.43 % 最大值(Max.) 20.6 3.00 % 最小值(Min.) 19.5 -2.50 % 標準差(STED 0.1378 " 0.69 % -- 、如上所述’利用本發明之交流發光二極體的操作方 法可對大量的父机發光二極冑U進行量測與測試等等操 作^用此方法對大量不同的交流發光二極體u各自施加 -第广驅動電壓，即可達到提供一穩定的實際驅動電流 (Irms’)的測試的目的，以統—測試的基礎， 的筛選與分㈣動作，叫職昇產品品料目的 淮，以上所述，僅為本發明的具體實施例之詳細 及圖式而已’並非用以限制本發明，本發明之所有範園應 201127196 以下述之申請專利範圍為準，任何熟悉該項技藝者在本發 明之領域内，可輕易思及之變化或修飾皆可涵蓋在以下本 案所界定之專利範圍。 . 【圖式簡單說明】 第一圖所示為交流發光二極體的應用電路圖。 第二圖所不為父流發光二極體的檢測電路圖。 第三圖所示為交流發光二極體工作於工作區的電流電壓 • 特性曲線圖。 第四圖所示為根據本發明實施例之交流發光二極體的操 作方法。 【主要元件符號說明】 I :應用電路 2:檢測電路 10 :交流電源 II :交流發光二極體 ® 12 :電阻 S41-S44 :說明本發明實施例之交流發光二極體的操作 方法 11/14Vrms = Vfl+ iy^-VflQxCIrms-Ifn m-ifi According to the above calculation formula, only a first driving electromigration (10) is required to call the second driving voltage (νβ) to test the AC LED, and The first driving current (four) and the second driving current (10) are respectively measured, and the above calculation formula is compared with a predetermined driving current (Irms), and a third driving voltage (Vrms) can be obtained. ). The third driving electric field (Vrms) can be applied to the detecting circuit 2 of the alternating current light emitting diode to perform subsequent characteristic measuring operations on the other alternating current light emitting diodes n having the same electrical characteristics. Brother, the third driving voltage (Vrms) is applied to the detection circuit 2 of the AC light-emitting diode, and the actual driving power (Irms') of the AC light-emitting diode and the preset driving current (Irms) can be verified. The difference. The first driving current: the second driving current and the actual driving current are currents flowing through the alternating current illuminating diode U. In other words, according to the operation method of the alternating current light emitting diode of the present invention, the current and voltage characteristics of the alternating current light emitting diode 11 being turned on in the working area can be close to a linear relationship. Therefore, the alternating current light emitting diode can be turned on. The current and voltage characteristics of the zone are considered to have a linear relationship with the same slope. That is, 8/14 201127196 is a current and voltage characteristic curve having the same slope, and the second driving voltage (vfl) and the second driving voltage (10) can be applied to the current emitting diode. 1丨, and obtain the first job - the drive current and the second drive current (If2). By this, the current and voltage characteristics can be calculated _ oblique (four) (C2) / (Repair _. Based on the above material and then according to the first driving voltage (Vfl), the first driving current (Ifl) and the preset The driving current (Irms) can be used to calculate the same calculation formula as the above interpolation method. It is worth mentioning that the setting of the first driving voltage (Vfl) and the second driving voltage (Vf2) can be based on the alternating current illumination. The upper and lower limits of the specification value of the diode 11 can be determined by other experimental methods or rule of thumb, for example: the preset driving current (Irms) is set at 20 mA, and the driving voltage (Vrms) should fall near 90 Vrms. According to the rule of thumb or experimental data, the driving voltage (Vrms) plus or minus 2 Vrms can be appropriately adjusted as the first driving voltage (vf 1) and the second driving voltage (Vf2), and the first driving voltage (Vfl) and the second The driving voltage (Vf2) may be a fixed value or a different first driving voltage (Vfl) and a second driving voltage (Vf2) according to different AC LEDs, and the third driving voltage (Vrms) Located between the first driving power (vfl) voltage and the second driving voltage (Vf2) The setting of the first driving voltage (Vfl) and the second driving voltage (Vf2) should not be excessively different from the third driving voltage (Vrms), since the present invention assumes that the driving current of the alternating current light emitting diode 11 after being turned on in the working area It has a linear relationship with the characteristics of the driving power. 'In fact, the characteristics of the driving current and the driving voltage are only linear, so if the first driving voltage (Vfl) and the second driving voltage (Vf2) are set and If the third driving voltage (Vrms) is too large, it may cause a large error. As shown in Table 1, 'for this operation method, the number is set to (in this case, 150 AC light-emitting diodes) The AC light-emitting diode η is subjected to 9/14 201127196 test = the obtained data. The average actual driving force current (irms, M 199) 3 measured in a predetermined number of AC light-emitting diodes 11 is obtained, which is the largest. The value is j 2 〇.6 mA, the minimum value is >9 5 mA, the standard deviation is 〇, and its A, pre-loading current s) is set to -A. This data is simpler and faster than the traditional operation method. The operation method is much more accurate, from the error of the knife, for 0.43 / can verify that the method of operation of the present invention does allow the actual _ ionization yang ') to fall exactly in the vicinity of the preset drive current (four) s) and does not produce a measurement data offset as described above for the improved method of operation. The phenomenon. Table 1 is not a summary of the verification of a certain number of AC light-emitting diodes according to the method of the present invention _| 〇 actual drive current (irms,) value (mA) error percentage average (Averaee) 19.913 -0.43 % Max. (Max.) 20.6 3.00 % Min (Min.) 19.5 -2.50 % Standard deviation (STED 0.1378 " 0.69 % -- as described above] The operation method of the AC LED using the present invention can be A large number of parent-emitting LEDs are used for measurement and testing, etc. ^This method is used to apply a wide driving voltage to a large number of different AC LEDs to provide a stable actual driving current ( The purpose of the test of Irms') is based on the basis of the test-and-test, the screening and sub-(4) actions, and the above-mentioned details of the specific embodiments of the present invention. 'It is not intended to limit the invention, and all of the scope of the invention is based on the scope of the following claims. Anyone skilled in the art, in the field of the invention, can be easily changed or modified. Following The patent scope defined in the case. [Simplified description of the diagram] The first diagram shows the application circuit diagram of the AC LED. The second diagram is not the detection circuit diagram of the parent LED. The current voltage and characteristic graph for the operation of the alternating current LED in the working area. The fourth figure shows the operation method of the alternating current LED according to the embodiment of the invention. [Description of main components] I: application circuit 2 : Detection circuit 10 : AC power supply II : AC light emitting diode ® 12 : Resistor S41-S44 : Operation method of the AC light emitting diode according to the embodiment of the present invention 11/14