201116838 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種液晶顯示裝置組件之測試設備及 轉接裝置，特別疋指一種液晶顯示裝置之主機板電路（Main Board)檢測設備及轉接裝置。 【先前技術】 參閱圖1，目前生產線對例如液晶電視（LCD τν)的主機 板電路90進行測試時，通常的做法是配合液晶電視的機種 選用對應的電源基板(POWER B〇ARD)91、液晶顯示器（LCD PANEL)92以及連接導接線901〜903作測試；但是，當需要 測試的主機板電路90的機種改變時，其周邊配套的測試設 備包括電源基板91 '液晶顯示器92及連接導接線901〜903 需要全部作配套更換’因此目前的測試方法的需要花費以下 成本： 1·機具成本：單一機型的主機板電路90在測試時需要 套針對該機型设計的電源基板91及液晶顯示器92，不同 機型的主機板電路90則需要不同電源基板91及液晶顯示器 92,如此一來，需購置不同尺寸及不同供應商的電源基板 91及液晶顯示器92，液晶顯示器92又屬於高單價物品，造 成整體測試成本無法降低。 2. 人力及時間成本：當生產線更換不同機種的主機板 電路90時，因為必需更換該機種適用的液晶顯示器92,生 產線需要安排較多的人力和時間來更換。 3. 面板維修成本：由於液晶顯示器92不是專門的測試 201116838 。又備，長期用來作測試設備使用，其損壞率很高，須送供應 商維修’造成維修費用的支出。 4.導接線更換成本：以主機板電路9〇連接液晶顯示器 92的導接線903為例，係使用一低電壓差動訊號 (Low-Voltage Differential Signaling;以下簡稱 LVDS)專用 的纜線，由於是當作生產線測試之用途，每測試一片主機板 電路90至少需插拔一次而容易造成損壞，使此導接線9〇3 成爲耗材，造成耗材支出費用增加。 鲁 【發明内容】 因此，本發明之目的，即在提供一種測試不同機種的主 機板電路時’無須更換不同配套組件而能降低測試成本的共 用電源及顯示器以檢測不同主機板電路的設備及轉接裝置。 於疋，本發明共用電源及顯示器以檢測不同主機板電路 的設備包括一電源供應器、一液晶顯示器及一轉接裝置，該 電源供應器用以輸出-預定電力；該液晶顯示器接收該主機 板電路的一控制訊號以進行一測試程序。該轉接裝置包含一 鲁 第一電路及一第二電路；該第一電路電性連接於該電源供應 器及該主機板電路之間，用以將該預定電力轉換為供應不同 機種的主機板電路所需之電源；該第二電路電性連接於該主 機板電路及該顯示器之間，用以將該主機板電路產生的控制 訊號轉換對該顯示器進行該測試程序所需的訊號格式。 本發明共用電源及顯示器以檢測不同主機板電路的轉 接裝置包括-第-電路及—第二電路，該第_電路電性連接 於-電源供應器及-待檢測的主機板電路之間，用以將該電 201116838 源供應器產生的-預定電力轉換為供應不同機種的主機板 €路所需n該第二電路電性連接於該主機板電路及-厂、器之間用以將該主機板電路產生的控制訊號轉換對該 顯示器進行測試程序所需的訊號格式。 本發明共用電源及顯示器以檢測不同主機板電路的設 備及轉接裝置之功效在於：測試不同機種的主機板電路時， 無須更換不同配套組件，因此可“主機板電路的測試成 本，並提昇生產線上測試主機板電路的效能。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在以 下配合參考圖式之較佳實施例的詳細說明中，將可清楚的呈 現。 I·系統架構： 參閱圖2，本發明的較佳實施例中，一測試設備i 係 用以檢測液晶電視所用的主機板電路3〇，測試設備1〇〇包 含一電源供應器3卜一液晶顯示器32及一電性連接在主機 板電路30、電源供應器31及液晶顯示器之間的轉接裝 置1。 本發明的目的是提供一種適用於測試不同種類的主機 板電路30的測試設備1〇〇，藉此使得待測試的主機板電路 30的種類改變時，其他周邊所用的測試設備包括電源供應 器31、液晶顯示器32和用以連接轉接裝置i的導接線⑽卜 504無須重複插拔或改變，需要更換的只有轉接裝置ι連接 到主機板電路3〇之間的兩條導接線5〇2、5〇3。 201116838 液晶顯示器32具有一液晶面板320、一時序控制板 (Timing controller ;簡稱 T_C〇N b〇ARD)321、一 換流器 (Inverter unit)322 及一背光模組（CCFL Backlight Unit)323， 液晶顯示器32的作用主要是接受主機板電路3〇的控制以 及LVDS信號並進行圖像顯示；電源供應器31用以輪出電 力供應轉接裝置1及供給24V電力予換流器322。 轉接裝置1包括一第一電路U及一第二電路12，第一 電路11電性連接於電源供應器31及主機板電路3〇之間， 用以經由導接線501接收預定電力並轉換為供應主機板電 路30所需之電源由導接線5〇2傳輸給主機板電路3〇;第二 電路12電性連接於主機板電路3〇及液晶顯示器32之間， 用以經由導接線503接收主機板電路30產生的一控制訊號 並轉換對液晶顯示器32進行測試程式所需之控制和圖像訊 號’再藉由導接線504傳輸給液晶顯示器32。 以下將轉接裝置1區分為第一電路U及第二電路12 介紹本發明的作用原理，第一電路u的相關圖式為圖3至 圖7’第二電路12的相關圖式為圖8至圖1〇。 H·第一電珞11 : 參閱圖2,第一電路丨丨的作用是經由導接線5〇1接收 預定電力並轉換為供應主機板電路3〇所需之電源由導接線 5〇2傳輸給主機板電路3〇,因此包括配合不同機種的主機板 電路30需要的各種穩壓電源的輸出電壓。 本較佳實施例中，可供測試的主機板電路3〇電性連接 第—電路11端具有多數個電源接腳及二控制接腳電源接 201116838 腳之要求區分為15伏、12伏、5伏或3.3伏之電壓，第一 控制接腳PS_ONA為高準位開機或低準位開機，第二控制 接腳AC_dr〇P一D之電源需求為3 3伏正向、3 3伏反向或12 伏正向之電壓。 參閱圖3’第一電路U包括一第一輸入埠21〇、一第一 輪出埠 220、一自動放電（Aut〇 discharge when ac p〇wer off) 模組111、一直流轉換暨過壓保護（DC t〇 dc With over voltage protect)模組 112、一第一位準（Level)轉換器 11〇、 一第二位準轉換器113及三組電子開關3〇1〜3〇3。 第一電路11與主機板電路30連接的導接線5〇2可根據 主機板電路30的電源電壓要求來設計，也就是從第一電路 11的第一輸出埠220進行挑選，同時考慮主機板電路3〇的 電源接腳定義（PIN define) ’即可設計適用的連接導接線。 第一電路11的第一輸入埠21〇連接電源供應器31並具 有五組接腳 15V—CN、12V_CN、3V3_MSB、ps_〇N 及 AC—drop—det;第一輸出埠220連接主機板電路3〇並具有七201116838 VI. Description of the Invention: [Technical Field] The present invention relates to a testing device and a switching device for a liquid crystal display device assembly, and more particularly to a main board testing device and a rotating device of a liquid crystal display device Connect the device. [Prior Art] Referring to Fig. 1, when the production line tests the motherboard circuit 90 of, for example, a liquid crystal television (LCD τν), the usual method is to select a corresponding power supply substrate (POWER B〇ARD) 91, liquid crystal for the LCD TV model. The display (LCD PANEL) 92 and the connection wires 901 to 903 are tested; however, when the model of the motherboard circuit 90 to be tested is changed, the surrounding test equipment includes the power substrate 91 'liquid crystal display 92 and the connection guide 901 ~903 needs to be replaced as a whole. Therefore, the current test method requires the following costs: 1. Machine cost: The single-board motherboard circuit 90 needs to be set for the power supply substrate 91 and liquid crystal display designed for the model. 92. The motherboard circuit 90 of different models needs different power substrate 91 and liquid crystal display 92. Therefore, the power substrate 91 and the liquid crystal display 92 of different sizes and different suppliers need to be purchased, and the liquid crystal display 92 belongs to a high unit price item. As a result, the overall test cost cannot be reduced. 2. Manpower and time cost: When the production line replaces the motherboard circuit 90 of different models, the production line needs to be arranged with more manpower and time to replace it because it is necessary to replace the liquid crystal display 92 suitable for the model. 3. Panel repair cost: Since LCD 92 is not a special test 201116838. Also prepared for long-term use as a test equipment, the damage rate is very high, must be sent to the supplier to repair the cost of maintenance costs. 4. Guide wire replacement cost: Take the guide wire 903 of the motherboard circuit 9 connected to the liquid crystal display 92 as an example, a cable dedicated to Low-Voltage Differential Signaling (LVDS) is used. For the purpose of the production line test, each test piece of the main board circuit 90 needs to be inserted and removed at least once, which is easy to cause damage, so that the guide wire 9〇3 becomes a consumable material, resulting in an increase in consumable expenses. Lu [Summary] Therefore, the object of the present invention is to provide a common power supply and display capable of reducing test costs without having to replace different supporting components when testing a motherboard circuit of different types to detect different motherboard circuits and to turn Connect the device. In the present invention, the device for sharing power and display to detect different motherboard circuits includes a power supply, a liquid crystal display and a switching device for outputting - predetermined power; the liquid crystal display receiving the motherboard circuit A control signal to perform a test procedure. The switching device includes a first circuit and a second circuit; the first circuit is electrically connected between the power supply and the motherboard circuit to convert the predetermined power into a motherboard for supplying different models. The second circuit is electrically connected between the motherboard circuit and the display for converting the control signal generated by the motherboard circuit to the signal format required for the test program to perform the test procedure. The switching device for sharing the power supply and the display to detect different motherboard circuits includes a -first circuit and a second circuit, the first circuit being electrically connected between the power supply and the motherboard circuit to be detected, The second circuit is electrically connected between the motherboard circuit and the factory, and is used to convert the predetermined power generated by the power source of the 201116838 source into a motherboard for supplying different models. The control signal generated by the motherboard circuit converts the signal format required for the test program to be tested. The utility model has the advantages that the device and the switching device for detecting the power of different motherboard circuits of the invention have the following functions: when testing the motherboard circuit of different models, there is no need to replace different supporting components, so the test cost of the motherboard circuit can be improved, and the production line can be upgraded. The performance of the above-described and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments of the present invention. System Architecture: Referring to FIG. 2, in a preferred embodiment of the present invention, a test device i is used to detect a motherboard circuit used in a liquid crystal television. The test device 1 includes a power supply 3 and a liquid crystal display 32. And a switching device 1 electrically connected between the motherboard circuit 30, the power supply 31 and the liquid crystal display. It is an object of the present invention to provide a test device suitable for testing different types of motherboard circuits 30, Thereby, when the type of the motherboard circuit 30 to be tested is changed, the test equipment used in other peripherals includes the power supply 31. The liquid crystal display 32 and the conductive wire (10) 504 for connecting the switching device i do not need to be repeatedly inserted or removed, and only the two guiding wires 5 〇 2 connected between the switching device ι and the motherboard circuit 3 需要 are required to be replaced. 5, 3. 201116838 The liquid crystal display 32 has a liquid crystal panel 320, a timing control board (Timing controller; T_C〇N b〇ARD for short) 321, an inverter unit 322 and a backlight module (CCFL Backlight). Unit 323, the role of the liquid crystal display 32 is mainly to accept the control of the motherboard circuit 3 以及 and LVDS signals and image display; the power supply 31 for rotating the power supply switching device 1 and supplying 24V power to the inverter The switching device 1 includes a first circuit U and a second circuit 12. The first circuit 11 is electrically connected between the power supply 31 and the motherboard circuit 3 to receive predetermined power via the wire 501. The power required for conversion to the main board circuit 30 is transmitted to the main board circuit 3 by the conductive line 5〇2; the second circuit 12 is electrically connected between the main board circuit 3〇 and the liquid crystal display 32 for guiding via the conductive line. 503 receiving the main The control signal and the image signal required for the test circuit of the liquid crystal display 32 are transmitted to the liquid crystal display 32. The switching device 1 is divided into the first circuit U. And the second circuit 12 introduces the working principle of the present invention. The correlation diagram of the first circuit u is the related diagram of the second circuit 12 of FIG. 3 to FIG. 7 is FIG. 8 to FIG. 1〇. H·first electric port 11 : Referring to FIG. 2, the function of the first circuit 是 is to receive the predetermined power via the conductive wire 5〇1 and convert it into the power supply for the main board circuit 3, and the power supply is transmitted to the motherboard circuit 3 by the conductive wire 5〇2, so It includes the output voltages of various regulated power supplies required for the motherboard circuit 30 of different models. In the preferred embodiment, the testable motherboard circuit 3 is electrically connected. The first circuit 11 has a plurality of power pins and the second control pin is connected to the power supply of 201116838. The requirements are divided into 15 volts, 12 volts, and 5 volts. Volt or 3.3 volts, the first control pin PS_ONA is high level or low level, the second control pin AC_dr 〇 P-D is required to be 3 3 volts forward, 3 3 volts reverse or 12 volt forward voltage. Referring to FIG. 3, the first circuit U includes a first input port 21〇, a first wheel output port 220, an automatic discharge (Aut〇discharge when ac p〇wer off) module 111, and a DC conversion and overvoltage protection. (DC t〇dc With over voltage protect) module 112, a first level converter 11A, a second level converter 113 and three sets of electronic switches 3〇1~3〇3. The conductive wire 5〇2 connected to the motherboard circuit 30 of the first circuit 11 can be designed according to the power supply voltage requirement of the motherboard circuit 30, that is, selected from the first output port 220 of the first circuit 11, while considering the motherboard circuit 3〇's PIN define' can be used to design suitable connection wires. The first input port 21 of the first circuit 11 is connected to the power supply 31 and has five sets of pins 15V-CN, 12V_CN, 3V3_MSB, ps_〇N and AC_drop_det; the first output port 220 is connected to the motherboard circuit 3〇 and have seven
組接腳 15VA、12VA、5V_MCU、5VA、3V3_MCU、PS_0NA 及C—drop—D ’其中的接腳ps一〇na及AC_drop_det是控 制接腳，其餘則是電源接腳。 當主機板電路30的微處理器（圖未示）需要的是5伏之 電壓時，第三接腳5V_MCU及第四接腳5VA的電源，由直 流轉換暨過壓保護模組112將第一輸入埠21〇的接腳 12V—CN的第一電壓12伏轉換為供應第三接腳5v_mcu的 第一電壓5伏，同時受第一控制接腳PS_0NA經第一位準 201116838 轉換器110轉換電壓準位後控制電子開關3〇3來産生第四接 腳5VA之電源，當主機板電路3〇需要的是33伏之電壓時， 第五接腳3V3_MCU的電源是直接取自接腳3V3JUSB。 由於電源供應器31並無提供5伏電壓，茲將直流轉換 暨過壓保護模組112如何利用電源供應器31提供之12伏電 壓轉換產生5伏電壓之原理詳細說明如下。 參閱圖4A及圖4B，直流轉換暨過壓保護模組112以 虚線作區隔的右半部（圖4A)為直流轉換部分及左半部（圖 4B)為過壓保護部分，各元件作用原理說明如下： 參閱圖4A ’為直流轉換暨過壓保護模組112的直流轉 換。卩分，主要包括數個電晶體q8、Q4、Q5及一 pWM控制 器40(型號為APM712〇)等元件，其中的電晶體Q8爲輸入 端’用以接收接腳12V—CN(如圖3)的12伏電壓，PWM控 制器40用以控制以輸出一 pWM電源經電晶體Q4、Q5及 電感L2及電谷c 13等元件構成的一開關濾波電路4丨而輸 出5伏電壓至接腳5V_MCU，電阻R56、R57及電容ci6 等元件用以组成一電壓反饋網路42，電壓反饋網路42的元 件參數用以確定PWM控制器40的輸出電壓值。 參閱圖4B，為直流轉換暨過壓保護模組丨丨2的過壓保 護部分，輸入電壓選取自接腳3.3V_MSB，當輸出的接腳 5V_MCU電壓高於一預定電壓，例如5 4伏時，則電晶體 Q6導通，然後經電晶體q1〇反相，引起電晶體卩丨丨及電晶 體Q8截止並關斷PWM控制器4〇的供電電源，使接腳 5V-MCU輪出降爲0V,藉此達到保護5伏電壓供電的負載 201116838 電路的目的。 一般正常工作時，當接腳12V—CN上電，電晶體QU 由於包Ha R40的作用一直處於導通狀態令電晶體立即 導通而使直流轉換暨過壓保護模組112供電；另外，電晶體 Q6、Q10、Q11、二極體D4、D1〇及電阻請等組成一單 觸發自鎖電路43,—旦接腳5V_MCU之電壓異常升高，將 使電晶體Q6瞬間導通’電晶體Q6，c爲高，電晶體Qi〇，c 爲低，電晶體Q11，C爲高，D1〇截止，接腳12V—cn通過 電阻R49，二極體D4繼續維持電阻R39 (Q6,C)高，破保 _ 電晶體Q11 -直處於截止狀態，要實現解鎖，只有關機後 重新開機。 再參閱圖3’對於不同機種的主機板電路3〇，其第一控 制接腳PS-ONA產生之開機電壓準位是不同的，而第一位 準轉換器11〇用以轉換第一控制接腳PS_〇NA電壓準位並 控制電子開關301〜303的導通或截止。 虽主機板電路30需要的是15伏或12伏之電壓時，以 第一輸出埠220來看，第一接腳15VA及第二接腳nvA的 鲁 輸入電壓是利用第一輸入埠210的接腳15v_cn、12v_cn 的電源，接受第一控制接腳PS一ONA經第一位準轉換器11〇 轉換電壓準位後控制電子開關301〜3〇2而產生。 配合圖5,第一位準轉換器110是接受第一控制接腳 PS一ONA控制的一電壓準位選擇電路，且連接至至其中一路 (接腳15VA)的電子開關301為電晶體Q3,由於其他二路（接 腳12VA，接腳5VA)的控制原理相似，以下僅針對如何產 10 201116838 生接腳15VA所需15伏電壓作介紹。 開關單元81爲第—控制接腳ps_〇NA的電壓準位選 擇’選擇1爲高電壓準位開機，選擇3爲低電壓準位開機; 電晶體Q3即爲電連接至接腳應的電子開關3〇1，為電 晶體Q7提供控制訊號，電晶體Q3截止時，電晶體⑺截 止；電晶體Q3導通時，雷曰种Λ7 +道4 X年遇吋电日日體Q7也導通，輸出15伏電壓 至接腳15VA，同時LED1點亮。 再參閱圖3，由於電源供應器31只能產生一種 AC-droP_det彳s號，然而，待測試的主機板電路3〇可能需 要三種AC_dr〇P_D信號，分別為3_3伏正向、3 3伏反向或 12伏正向之電壓，因此，本較佳實施例利用，，位準轉換，，的 概念實現將一種信號轉換爲三種信號，以便測試各種主機板 電路30。 因此，第二位準轉換器113即是將第一輸入埠210的第 二控制接腳AC_drop_det的一預定電壓經位準轉換後，輸出 包括3.3伏正向'3.3伏反向或12伏正向之電壓的控制訊號 予第一輸出埠220的第二控制接腳AC_drop_D。 參閱圖6,第二位準轉換器113具有接收電源供應器31 的輸入之控制接腳AC_drop_det(電源供應端），藉由輸入接 腳12VA、3.3V_MSB、電子開關S2，S3爲電壓準位選擇開 關，再配合電晶體Q14以完成訊號反相功能’然後由輪出 之控制接腳AC_drop_D(主機板電路端）輸出予主機板電路 3〇,藉此輸出包括3.3伏正向、3.3伏反向或12伏正相三種 電壓準位。 201116838 參閱圖7 ’自動放電模組！丨丨主要包括一關機狀態識別 電路44、一放電電子開關45(多路共用）及數個放電電阻， 當關機狀態識別電路44偵知關機後即藉由該放電電子開關 45及該等放電電阻放電。 關機識別電路44包括電阻ri、二極體D1、電容C2、 電晶體Q2;開機後，接腳12V_CN之電源經電阻、二極 體D1給電容C2充電，使電晶體Q2的E極電壓接近i2v 且一直維持不變，當電源AC關機時，接腳12V_CN的電壓The group pins 15VA, 12VA, 5V_MCU, 5VA, 3V3_MCU, PS_0NA and C_drop-D' have pins ps_〇na and AC_drop_det which are control pins, and the rest are power pins. When the microprocessor (not shown) of the motherboard circuit 30 requires a voltage of 5 volts, the power of the third pin 5V_MCU and the fourth pin 5VA is firstly converted by the DC conversion and overvoltage protection module 112. The first voltage 12 volts of the pin 12V-CN input to the 埠21〇 is converted to the first voltage 5 volts supplying the third pin 5v_mcu, and is converted by the first control pin PS_0NA via the first level 201116838 converter 110. After the level is controlled, the electronic switch 3〇3 is controlled to generate the power of the fourth pin 5VA. When the motherboard circuit 3 requires 33 volts, the power of the fifth pin 3V3_MCU is directly taken from the pin 3V3JUSB. Since the power supply 31 does not provide a voltage of 5 volts, the principle of how the DC conversion and overvoltage protection module 112 utilizes the 12 volt voltage conversion provided by the power supply 31 to generate a voltage of 5 volts is explained in detail below. Referring to FIG. 4A and FIG. 4B, the right half of the DC conversion and overvoltage protection module 112 is separated by a broken line (FIG. 4A), and the DC conversion part and the left half (FIG. 4B) are overvoltage protection parts, and components. The principle of action is as follows: Refer to Figure 4A' for DC conversion of DC conversion and overvoltage protection module 112. Divided, mainly includes several transistors q8, Q4, Q5 and a pWM controller 40 (model APM712〇) and other components, wherein the transistor Q8 is the input terminal 'to receive the pin 12V-CN (Figure 3 12 volts, the PWM controller 40 is used to control the output of a pWM power supply through the transistors Q4, Q5 and the inductor L2 and the electric valley c 13 and other components of a switching filter circuit 4 输出 and output 5 volts to the pin The 5V_MCU, the resistors R56, R57 and the capacitor ci6 are used to form a voltage feedback network 42. The component parameters of the voltage feedback network 42 are used to determine the output voltage value of the PWM controller 40. Referring to FIG. 4B, the overvoltage protection part of the DC conversion and overvoltage protection module 丨丨2, the input voltage is selected from the pin 3.3V_MSB, when the output pin 5V_MCU voltage is higher than a predetermined voltage, for example, 5 4 volts, Then, the transistor Q6 is turned on, and then inverted by the transistor q1〇, causing the transistor 卩丨丨 and the transistor Q8 to be turned off and the power supply of the PWM controller 4 关 to be turned off, so that the pin 5V-MCU wheel is reduced to 0V. This achieves the purpose of protecting the load of the 201116838 circuit powered by 5 volts. Generally, during normal operation, when the pin 12V-CN is powered on, the transistor QU is always in the conduction state due to the action of the package Ha R40, so that the transistor is immediately turned on to supply the DC conversion and overvoltage protection module 112; in addition, the transistor Q6 , Q10, Q11, diode D4, D1 〇 and resistors, etc. constitute a single-trigger self-locking circuit 43, the voltage of the pin 5V_MCU is abnormally increased, which will make the transistor Q6 turn on instantaneously, the transistor Q6, c is High, transistor Qi〇, c is low, transistor Q11, C is high, D1〇 is cut off, pin 12V-cn passes through resistor R49, diode D4 continues to maintain resistance R39 (Q6, C) high, break _ The transistor Q11 - is in the off state, to unlock, only restart after power off. Referring to FIG. 3', for the motherboard circuit 3 of different models, the first control pin PS-ONA generates a different starting voltage level, and the first level converter 11 is used to convert the first control interface. The pin PS_〇NA voltage level and controls the on or off of the electronic switches 301 303 303. When the motherboard circuit 30 requires a voltage of 15 volts or 12 volts, the first input port VA 220, the Lu input voltage of the first pin 15VA and the second pin nvA is connected by the first input port 210. The power supply of the pins 15v_cn and 12v_cn is generated by controlling the electronic switches 301 to 3〇2 after the first control pin PS_ONA is converted to the voltage level by the first level converter 11〇. 5, the first level converter 110 is a voltage level selection circuit that is controlled by the first control pin PS-ONA, and the electronic switch 301 connected to one of the paths (pin 15VA) is the transistor Q3. Since the control principle of the other two paths (pin 12VA, pin 5VA) is similar, the following only describes how to produce 15 volts required for 15 201116838 pin 15VA. The switch unit 81 selects the voltage level of the first control pin ps_〇NA to select '1 for the high voltage level, and 3 for the low voltage level; the transistor Q3 is the electron that is electrically connected to the pin. The switch 3〇1 provides a control signal for the transistor Q7. When the transistor Q3 is turned off, the transistor (7) is turned off; when the transistor Q3 is turned on, the Thunder type 7+ channel 4 X years is met, and the day and body Q7 is also turned on, and the output is turned on. 15 volts to pin 15VA while LED1 is lit. Referring again to FIG. 3, since the power supply 31 can only generate one AC-droP_det彳s number, however, the motherboard circuit 3 to be tested may require three AC_dr〇P_D signals, which are 3_3 volt forward and 3 3 volt reverse. To the voltage of 12 volts forward, the preferred embodiment of the present invention utilizes the concept of level conversion to convert one signal to three signals in order to test various motherboard circuits 30. Therefore, the second level shifter 113 is a level-converted conversion of a predetermined voltage of the second control pin AC_drop_det of the first input port 210, and the output includes 3.3 volts forward '3.3 volts reverse or 12 volts forward. The voltage control signal is supplied to the second control pin AC_drop_D of the first output port 220. Referring to FIG. 6, the second level shifter 113 has a control pin AC_drop_det (power supply terminal) for receiving the input of the power supply 31, and the voltage is selected by the input pins 12VA, 3.3V_MSB, and the electronic switches S2 and S3. The switch, in conjunction with the transistor Q14, completes the signal inversion function' and then outputs the control pin AC_drop_D (the motherboard circuit terminal) to the motherboard circuit 3〇, whereby the output includes a 3.3 volt forward, 3.3 volt reverse Or 12 volts positive phase three voltage levels. 201116838 See Figure 7 'Auto Discharge Module! The 丨丨 mainly includes a shutdown state recognition circuit 44, a discharge electronic switch 45 (multiplexed) and a plurality of discharge resistors. When the shutdown state recognition circuit 44 detects the shutdown, the discharge electronic switch 45 and the discharge resistors are used. Discharge. The shutdown identification circuit 44 includes a resistor ri, a diode D1, a capacitor C2, and a transistor Q2. After the power is turned on, the power supply of the pin 12V_CN is charged to the capacitor C2 via the resistor and the diode D1, so that the E-electrode voltage of the transistor Q2 is close to i2v. And has remained unchanged, when the power supply AC is turned off, the voltage of the pin 12V_CN
下降，經電阻R1使電晶體Q2導通，電晶體Q2，c有高電 壓準位輸出，此時二極體D1截止，電容C2只能通過電晶 體Q2放電’電容C2的容量越大’雄持放電的時間越長。 放電電子開i 45包括電阻R5、R2、電容C36、電晶體 Q1組成；電阻R3、R22組成接腳15V_CN的放電回路；電 阻R4爲接腳12V_CN放電回路，由於電晶體的成本遠大於 二極體，爲節省成本且簡化電路，將電晶體Q1的放電電子 開關作爲共用，故在接腳12V—CN的放電回路中增加二極體Decide, the transistor Q2 is turned on by the resistor R1, and the transistor Q2, c has a high voltage level output. At this time, the diode D1 is turned off, and the capacitor C2 can only be discharged through the transistor Q2. The larger the capacity of the capacitor C2 is. The longer the discharge is. Discharge electron opening i 45 includes resistors R5, R2, capacitor C36, transistor Q1; resistors R3, R22 form the discharge loop of pin 15V_CN; resistor R4 is the pin 12V_CN discharge loop, because the cost of the transistor is much larger than the diode In order to save cost and simplify the circuit, the discharge electronic switch of the transistor Q1 is shared, so the diode is added to the discharge circuit of the pin 12V-CN.
D2作隔離二極體使用，保證在不放電時，這些放電回路不 影響15伏及12伏電壓的正常工作，此電路同時可擴展到 3.3伏電壓的回路放電。 III.第二電路12 : /閱圖8’第二電路12的作用是供不同機型的主I 電路30測試時共用—款液晶顯示器32,藉由第二電路1 可減少測試用的液晶顯示器32的種類和數量，節省購置$ 晶顯示器32的費用，且無需更換液晶顯示器32以節省換· 12 201116838 的人力和時間’此外，第二電路12更保護液晶顯示器32 以降低其測試損壞率而減少維修費用，且無須不斷插拔連接 液晶顯示器32的導接線504而可降低耗材費用》 由於不同的液晶電視的主機板電路30的電源供電電 壓、LVDS訊號腳位元定義、LVDS訊號的格式可能不一樣， 所以需要第二電路12及配套導接線503來實現正確轉換， 針對測試用的液晶顯示器32的物理解析度的要求，可將目 前生産的液晶電視的機種分類成WXGA( 1366X768)及FHD # ( 1920xl08〇)兩大類，其中WXGA類型的機種占80%以 上’ FHD類型的機種目前只占20%以下，當然除了前述的 機種/型號，其他液晶電視的機種/型號也可適用，本較佳實 施例是選用WXGA解析度的型號CMO V26B1-L01的液晶 顯不益32’需求電源為5伏電壓。 第二電路12包括一第二輸入埠410、一第二輸出埠 420、一 電壓識別轉換（Auto adaptive power supply transfer) 模組121、一靜電保護（ESD protection)模組122、一主機板 鲁 格式轉換（LVDS data format setting for M/B)模組 123 及一面 板格式轉換（LVDS data format setting for Panel)模組 124。 在導接線方面，主機板電路30的LVDS連接器 (connector)306有二類，一類是用以連接軟性電路板（FFC)， 另一類是用以連接雙絞線（Twist wire)，第二輸入埠410即 是配合電性連接主機板電路30的LVDS連接器306，用以 分別接收12伏或5伏的電壓訊號及一 LVDS資料（10 pairs LVDS data)訊號，液晶顯不益32以固定不變的導接線504 13 201116838 電性連接第二輸出埠420，由於是固定連接在第二電路12 上，因此變換不同種類的主機板電路30時無須重舉插拔導 接線504。 本較佳實施例在介面相容及腳位元重新分配（Assign) 方面，主要是透過導接線503、504的重新設計來實現電源 接腳（Power pin)、LVDS 訊號接腳（包括 LVDSVDD ; GND ; LVDSDATA_SET(或 SELLVDS) ; LVDS DATA (ΤΧΑ0-/+， TXA3-/+,TXB0-/+,TXB3-/+); LVDS CLOCK (TXAC-/+, TXBC-/+))、格式設定接腳（F〇rmat setting pin)的重新分配。 l f:源、供應方面，本較佳實施例中，待測試的主機板電 路30輸出的電源電壓是I2伏或5伏，因此須利用電壓識別 轉換模組121轉換為液晶顯示器32所需的5伏電壓。 電壓識別轉換模組121的作用是設定正確的工作電 壓，彳呆證與選定的測試液晶顯示器32要求的額定電壓一 致，現可設定的電源電壓爲5伏和12伏二種’其供電回路 如果選定的液晶顯示器32(如型號CMO26VBL01)所需的電 源m5伏，且當主機板電路30輸出的電源電壓是5伏 時，電壓識別轉換模組121自動將5伏電源直接輸出到液晶 顯示器32,如果主機板電路30輸出的電源電壓是12伏， 則將12伏經直流轉換(DC to DC)爲5伏’再輸出給液晶顯 示器32。 其他實施例中，亦可選用需求電壓為12伏之液晶顯示 器32，如果選定（預留設計）的液晶顯示器32所需的電源電 壓是12伏，此時由外接I2伏電壓供電，當主機板電路3〇 14 201116838 開機後’電源PANEL_VCC轉爲有效電壓準位時，才將這 12V電源導通至液晶顯示器32，確保液晶顯示器32的開機 時序（POWER ON Sequence)與原系統設計不變。 茲將電壓識別轉換模組121如何將來自主機板電路3〇 的電壓或外部電壓轉換為液晶顯示器32所需的5伏或12 伏電壓之原理說明如下。 參閱圖9,電壓識別轉換模組121包括一外部電源輸入 端70、一外部開關7〇1、一第一電壓開關7〇2、第二電壓開 關703、一主板電源輸入端71、一識別電路72、一設定單 凡73、一反向模組731、一直流電壓轉換模組74及一面板 電源輸出端75 ;其中的外部開關7〇1、第一電壓開關7〇2 及第二電壓開關7〇3皆是輸入為高（High)準位為導通 (ON) ’輸入低（l〇w)準位則截止（〇FF)。 爲保證液晶顯示器32的電源開啟/關閉（PGwer〇n/〇ff) 的供電時序，由主機板電路3〇的輸出電壓供給主板電源輸 入端71 ’區分為供應5伏（第一電壓）或12伏（第二電壓）， 此時手動操作蚊單元73須設定在第—位置，其輸出為高 阻抗；或由外部電源輸入端7〇供應外部的12伏電壓（第三 電壓），此時手動操作設定單元73須設定在第二位置，其輸 出為接地，分別介紹如下。 主板電源輸入端71供應5伏電壓時，操作設定單元73 在第-位置，使得狀單元73之輸出為高阻抗，通過自動 债測（Amo detect 5 V or i 2V)之識別電路72輸出為低準位電 壓，經反向模組731成為高準位電壓，驅使第一電壓開關 15 201116838 術導通及未經反向模，组731之低準 7°3截止’藉此通過第-電屋開關7。2將5伏!=關 板電源輸出端75。 电輸出 >、，。面 主扳電源輸入端71供應12伏 元73在第二位置，通過自動偵 * _作設定岸 #雪厭、識別電路72輸出為高季 位電壓，經反向模組731成為低 孕 關搬截止及未經反向模組731 較弟一電壓開 〈呵準位電壓驅使第二雷 開關703導通，再通過直流電壓轉換模組74轉 壓輸出給面板電源輸出端75。 …、 電D2 is used as an isolation diode to ensure that these discharge circuits do not affect the normal operation of 15 volts and 12 volts when not discharging. This circuit can also be extended to a 3.3 volt loop discharge. III. Second circuit 12: / Figure 8' The second circuit 12 functions to share the liquid crystal display 32 when the main I circuit 30 of different models is tested, and the liquid crystal display for testing can be reduced by the second circuit 1. The type and number of 32 saves the cost of purchasing the crystal display 32, and there is no need to replace the liquid crystal display 32 to save the manpower and time of the 201116838. In addition, the second circuit 12 protects the liquid crystal display 32 to reduce its test damage rate. The maintenance cost is reduced, and the cost of consumables can be reduced without continuously plugging and unplugging the connection wires 504 of the liquid crystal display 32. The power supply voltage of the motherboard circuit 30 of different LCD TVs, the definition of the LVDS signal pin, and the format of the LVDS signal may be Different, so the second circuit 12 and the matching guide wire 503 are required to achieve correct conversion. For the physical resolution requirements of the liquid crystal display 32 for testing, the currently produced LCD TV models can be classified into WXGA (1366X768) and FHD. # ( 1920xl08〇) two categories, of which WXGA type models account for more than 80% 'FHD type models currently only account for less than 20%, of course, in addition to the aforementioned Model/model, other LCD TV models/models are also applicable. In the preferred embodiment, the model CMO V26B1-L01 with WXGA resolution is used. The 32' power supply is 5 volts. The second circuit 12 includes a second input port 410, a second output port 420, an auto adaptive power supply transfer module 121, an ESD protection module 122, and a host board format. The LVDS data format setting for M/B module 123 and the LVDS data format setting for panel module 124. In terms of the wiring, the LVDS connector 306 of the motherboard circuit 30 has two types, one for connecting a flexible circuit board (FFC) and the other for connecting a twisted wire (Twist wire), the second input. The 埠410 is an LVDS connector 306 that is electrically connected to the motherboard circuit 30 for receiving a voltage signal of 12 volts or 5 volts and a signal of 10 LVDS data, respectively. The variable lead wire 504 13 201116838 is electrically connected to the second output port 420. Since it is fixedly connected to the second circuit 12, it is not necessary to re-plug the wire 504 when changing the different types of the motherboard circuit 30. In the preferred embodiment, in terms of interface compatibility and pin assignment, the power pin and the LVDS signal pin (including LVDSVDD; GND) are mainly implemented through redesign of the wires 503 and 504. ; LVDSDATA_SET (or SELLVDS); LVDS DATA (ΤΧΑ0-/+, TXA3-/+, TXB0-/+, TXB3-/+); LVDS CLOCK (TXAC-/+, TXBC-/+)), format setting pin (F〇rmat setting pin) redistribution. In the preferred embodiment, the power supply voltage outputted by the motherboard circuit 30 to be tested is I2 volts or 5 volts, so that the voltage recognition conversion module 121 needs to be converted into the liquid crystal display 32. Volt voltage. The function of the voltage identification conversion module 121 is to set the correct working voltage, and the proof voltage is the same as the rated voltage required by the selected test liquid crystal display 32. The current settable power supply voltage is 5 volts and 12 volts. The power supply required for the selected liquid crystal display 32 (such as the model CMO26VBL01) is m5 volts, and when the power supply voltage output by the motherboard circuit 30 is 5 volts, the voltage recognition conversion module 121 automatically outputs the 5 volt power supply directly to the liquid crystal display 32. If the power supply voltage output from the motherboard circuit 30 is 12 volts, 12 volts is DC-converted (DC to DC) to 5 volts and output to the liquid crystal display 32. In other embodiments, a liquid crystal display 32 having a required voltage of 12 volts may be selected. If the power supply voltage required for the selected (reserved design) liquid crystal display 32 is 12 volts, the external power supply is supplied by the I2 volt voltage. Circuit 3〇14 201116838 After turning on the power supply PANEL_VCC to the effective voltage level, the 12V power supply is turned on to the liquid crystal display 32, ensuring that the power-on sequence (POWER ON Sequence) of the liquid crystal display 32 and the original system design are unchanged. The principle of how the voltage identification conversion module 121 converts the voltage from the motherboard circuit 3 或 or the external voltage to the 5 volt or 12 volt required for the liquid crystal display 32 is explained below. Referring to FIG. 9, the voltage identification conversion module 121 includes an external power input terminal 70, an external switch 7〇1, a first voltage switch 7〇2, a second voltage switch 703, a motherboard power input terminal 71, and an identification circuit. 72. A setting unit 73, a reverse module 731, a DC voltage conversion module 74 and a panel power output terminal 75; wherein the external switch 7〇1, the first voltage switch 7〇2 and the second voltage switch 7〇3 is the input high (High) level is ON (ON) 'Input low (l〇w) level is off (〇FF). In order to ensure the power supply timing of the power supply on/off (PGwer〇n/〇ff) of the liquid crystal display 32, the output voltage supplied from the motherboard circuit 3〇 is supplied to the main board power input terminal 71' to be supplied with 5 volts (first voltage) or 12 Volt (second voltage), at this time, the manually operated mosquito unit 73 must be set at the first position, and its output is high impedance; or the external power input terminal 7 〇 is supplied with an external 12 volt (third voltage), at this time manually The operation setting unit 73 has to be set at the second position, and its output is grounded, as described below. When the main board power input terminal 71 supplies a voltage of 5 volts, the operation setting unit 73 is at the first position, so that the output of the unit 73 is high impedance, and the output of the identification circuit 72 by the automatic debt measurement (Amo detect 5 V or i 2V) is low. The level voltage is turned into a high level voltage through the reverse module 731, driving the first voltage switch 15 201116838 to be turned on and without the reverse mode, and the low level of the group 731 is cut off by 7° 3 'by the first electric house switch 7. 2 will be 5 volts! = off board power output 75. Electric output >,,. The main power input terminal 71 of the main panel supplies 12 volts 73 in the second position, and the output is set to a high season voltage by the automatic detection _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The cut-off and non-reverse module 731 is turned on by the voltage of the second module. The second lightning switch 703 is turned on, and then outputted to the panel power output terminal 75 through the DC voltage conversion module 74. …, Electricity
另外，當選擇來自外部之非5¥之 仙#分 Γ 口丨電/原輸入端70 供應其他電壓電源（即第三電塵），例如33v或i2V等， 時’因設定單it 73是設置在第二位置，其輸出為接地，= 一電壓開關702及第二電壓開關7()3均截止，並驅使外部開 關7(H導通’因此’面板電源輸出端75只會從外部電源^ 入端70通過外部開關701供應所需3 3或。伏電壓。In addition, when selecting a non-5¥仙##ΓΓ丨/原 input 70 to supply other voltage power (ie, third dust), such as 33v or i2V, etc., In the second position, its output is grounded, = a voltage switch 702 and a second voltage switch 7 () 3 are both turned off, and drive the external switch 7 (H is turned on 'so the panel power output 75 only from the external power source Terminal 70 supplies the required 3 3 or volts through external switch 701.
再參閱圖8,在靜電保護模組122方面，由於在生産線 作為測試設備，㈣受到外界的電磁干擾和操紅反覆插拔 時意外帶電干擾，這類干擾都是從LVDS訊號的第二輸入埠 41〇引入’如此容易使液晶顯示器32内部的時序控制板321 的訊號處理輸入端損壞，因此，靜電保護模組122即是一種 防止靜電（ESD)擊穿的熱插拔電路來保護液晶顯示器32避 免損壞。 圖10爲靜電保護模組122對一個訊號通道進行保護的 示意圖’如有一個過高正脈衝雜波訊號被加到輸入端，會首 16 201116838 先被電阻限制，再被上拉一第一二極體D1鉗位到至一預定 電壓3.3V ’如有一個尖峰負脈衝雜波訊號同樣先被電阻r 限制，再被下拉一第二二極體D2鉗位到地的電壓準位，達 到保護後端的液晶顯示器32的目的。 再參閱圖8,主機板格式轉換模組123是爲主機板電路 30而設的’主要是滿足不同液晶電視（LcD τν)的設定要 求，使液晶電視的主機板電路30能夠正確輸出LVDs訊 號；面板格式轉換模組124則是測試液晶顯示器32而設的， 使液晶顯示器32能接收的LVDS訊號格式與主機板電路3〇 的輸出訊號正確匹配，從而確保顯示正確的圖像。 綜上所述’本發明共用電源及顯示器以檢測不同主機板 電路的設備100及轉接裝置1測試不同機種的主機板電路 30時，無須更換不同配套組件，因此可節省主機板電路3〇 的測試成本’並提昇生產線上測試主機板電路3 〇的效能， 在維持原設計的情況下，可以測試多種的主機板電路3〇， 達到了減少工廠測試設備成本、降低測試損耗及提高生產效 率，故確實能達成本發明之目的。 惟以上所述者，僅為本發明之較佳實施例而已，當不能 以此限定本發明實施之範圍’即大凡依本發明申請專利範圍 及發明說明内容所作之簡單的等效變化與修飾，皆仍屬本發 明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是一系統方塊圖，說明目前生產線對例如液晶電視 的主機板電路進行測試的設備； 17 201116838 圖2是一系統方塊圖，說明本發明共用電源及顯示器以 檢測不同主機板電路的設備的較佳實施例包括一第一電路 及一第二電路； 圖3是一電路方塊圖’說明第一電路的元件組成及連揍 關係； 圖4A是一電路圖，說明第一電珞的直流轉換暨過壓保 濩模組以虛線作區隔的右半部為直流轉換部分； 圖4B是一電路圖，說明第一電路的直流轉換暨過壓保 護模組以虛線作區隔的左半部為過壓保護部分； 馨 圖5疋一電路圖，說明第一位準轉換器的相關電路； 圖6是一電路圖，說明第二位準轉換器的相關電路； 圖7是一電路圖，說明自動放電模組的相關電路； 圖8是一電路方塊圖，說明第二電路的元件組成及連接 關係； 圖9是一電路方塊圖，說明第二電路的電壓識別轉換模 組的相關元件；及 圖10是一示意圖，說明第二電路的靜電保護模組對一 · 個訊號通道如何進行保護。 18 201116838Referring to FIG. 8, in the aspect of the electrostatic protection module 122, since the production line is used as a test device, (4) is subjected to external electromagnetic interference and accidental charging interference when the operation is repeated, the interference is from the second input of the LVDS signal.埠41〇Introduction 'so easy to damage the signal processing input terminal of the timing control board 321 inside the liquid crystal display 32, therefore, the electrostatic protection module 122 is a hot plug circuit for preventing static electricity (ESD) breakdown to protect the liquid crystal display 32 to avoid damage. FIG. 10 is a schematic diagram of the protection of a signal channel by the electrostatic protection module 122. If an excessively high positive pulse clutter signal is added to the input terminal, the first 16 201116838 is first limited by the resistance, and then pulled up by the first two. The pole body D1 is clamped to a predetermined voltage of 3.3V. If there is a spike negative pulse clutter signal, it is first limited by the resistor r, and then pulled down by a second diode D2 to the ground voltage level to achieve protection. The purpose of the back end of the liquid crystal display 32. Referring to FIG. 8 , the motherboard format conversion module 123 is configured for the motherboard circuit 30 to meet the setting requirements of different LCD TVs (LcD τν), so that the motherboard circuit 30 of the LCD TV can correctly output the LVDs signal; The panel format conversion module 124 is configured to test the liquid crystal display 32, so that the LVDS signal format that the liquid crystal display 32 can receive is correctly matched with the output signal of the motherboard circuit 3, thereby ensuring that the correct image is displayed. In summary, when the device 100 and the switching device 1 for detecting different motherboard circuits of the present invention are used to test the motherboard circuit 30 of different models, there is no need to replace different supporting components, thereby saving the motherboard circuit. Test cost' and improve the performance of the test board circuit on the production line. When the original design is maintained, a variety of motherboard circuits can be tested, reducing the cost of factory test equipment, reducing test loss and improving production efficiency. Therefore, the object of the present invention can be achieved. However, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention, All remain within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a system block diagram showing a device for testing a motherboard circuit such as a liquid crystal television at a current production line; 17 201116838 FIG. 2 is a system block diagram illustrating a common power supply and a display of the present invention to detect different The preferred embodiment of the device of the motherboard circuit comprises a first circuit and a second circuit; FIG. 3 is a circuit block diagram illustrating the component composition and the connection relationship of the first circuit; FIG. 4A is a circuit diagram illustrating the first The DC conversion and overvoltage protection module of the electric cymbal is divided into DC parts by the dotted line. Figure 4B is a circuit diagram showing that the DC conversion and overvoltage protection module of the first circuit is separated by a broken line. The left half is the overvoltage protection part; the circuit diagram of 馨5疋1 illustrates the related circuit of the first level converter; Fig. 6 is a circuit diagram illustrating the related circuit of the second level converter; Fig. 7 is a circuit diagram FIG. 8 is a circuit block diagram illustrating the component composition and connection relationship of the second circuit; FIG. 9 is a circuit block diagram illustrating the second circuit The voltage recognition conversion module is related to components; and FIG. 10 is a schematic diagram showing how the electrostatic protection module of the second circuit protects a signal channel. 18 201116838
【主要元件符號說明】 〔習知〕 30......... •主機板電路 90·.. ......主機板電路 301-303 電子開關 91". ......電源基板 306 ....... 連接器 92... 液晶顯不器 31......... 電源供應器 901- 903導接線 32......... 液晶顯示器 〔本創作〕 320 ....... 液晶面板 100 · ......測試設備 321 ....... 時序控制板 1 ···· ......轉接裝置 322 ....... 換流器 11… ......第一電路 323 ....... 背光模組 110 · ......第一位準轉換器 410....... 第二輸入埠 111 · ......自動放電模組 420 ....... 第二輸出璋 112 · ......直流轉換暨過壓 501〜504 接線 保護模組 70......... 外部電源輸入端 113 · ......第一位準轉換器 701 ....... 外部開關 12... ......第一電路 702 ....... 第一電壓開關 121 …電壓識別轉換模組 703 ....... 第二電壓開關 122 · ......靜電保§蔓模組 71......... 主板電源輪入端 123 · …主機板格式轉換模 72......... 識別電路 組 73......... 設定單元 124 . …面板格式轉換模組 731 ....... 反向模組 210 · ......第一輸入埠 74……直流電壓轉換模組 220 · ......第一輸出埠 75......... 面板電源輪出端[Main component symbol description] [Practical] 30......... • Motherboard circuit 90·........ Motherboard circuit 301-303 Electronic switch 91". ..... Power Substrate 306 ....... Connector 92... Liquid Crystal Display 31... Power Supply 901- 903 Conductor 32......... Display [this creation] 320 ....... LCD panel 100 · ... test equipment 321 ....... timing control board 1 ···· 322 ....... inverter 11... ...... first circuit 323....... backlight module 110 · ... first level converter 410.. ..... second input 埠 111 · ...... automatic discharge module 420 ....... second output 璋 112 · ... DC conversion and overvoltage 501~504 wiring Protection module 70......... External power input 113 · ... first level converter 701 .... external switch 12... The first circuit 702 .... the first voltage switch 121 ... the voltage identification conversion module 703 .... the second voltage switch 122 ... ... electrostatic protection § vine module 71 ......... Motherboard power supply terminal 123 · ... motherboard format conversion module 72...... ... identification circuit group 73......... setting unit 124. ... panel format conversion module 731 .... reverse module 210 · ... first input 埠74... DC voltage conversion module 220 · ... first output 埠 75......... panel power wheel outlet
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