1325075 九、發明說明： 【發明所屬之技術領域】 本發明係有關-種檢職路與方法，制是-種液⑽示面板的檢測 電路與方法及其液晶顯示面板。 【先前技術】 液晶顯示面板(LCD panel)於製造完成後要出廠之前，必須先經過檢測 的程序。經由檢測程序而測試液晶顯示面板中用以控制各個畫素顯示 的薄膜電晶體(thin film transistor，TFT)之運作是否正常。設置於液晶顯示面 板四周的面板檢測電路，其佈制方合檢測賴的赋而有所不同， 現行較為常見的檢測電路佈線方式有環狀短路佈線(sh〇rtlay〇m)與桿狀 短路佈線(short bar layout)兩種〇 傳統上，不論是環狀短路佈線的檢測電路或桿狀短路佈線的檢測電 路’於檢測完畢後皆需個雷射切娜檢測電路姆，以防檢_路胃 液晶顯示面板的正常運作。然而，傳統的做法需多增加雷射切割之步驟， 且雷射切割會產生許多切割微粒進而影響液晶顯示面板。因此，習知技術 中有在短路佈線與掃描線或資料線之間加入控制開關，而在測試時讓控制 開關導通，待測試結束後則讓控制開關斷路。如此，便可以省去傳統使用 雷射切割的步驟，可得到更為簡化的製程與降低成本的功效。 一般而言，所提供的控制開關之電位與液晶顯示面板内部之閘極杵制 訊號之電位相等(或相近），故在閘極控制訊號由低電位轉成高電位時會☆ 限於元件特性導致所能提供的電壓值有限’而無法讓顯示區内的掃描線快 5 1325075 速到_位。故只能藉由拉長閘極訊號抬高的_，亦即將·訊號維 持在两電位的時間拉長，或者提高控制訊號的電髮值來改善液晶面板中抓 充電的情形。然而，如此的作法將使得測試的時間拉長同時也會造成較 大的電源消耗。 . ，如何改善習知技術中液晶顯示面板的檢測電路所衍生之問題， • 為一亟待解決的議題。 【發明内容】 # 冑鏗於此本發明提出一種液晶顯示面板的檢測電路與方法及其液晶顯 示祕。藉由本發衝提“裝^綠，_職峨，料提高訊號 線電位’以增加測試精，減少測試時間，進而提高測試效率。 本發明提出—驗諸示面__電路，肋檢難有複數條訊號 線之液晶顯示面板’該檢測電路包含：複數個控制開關分別具有第一端、 第二端與第三端’第一端分別對應輕接訊號線，第二端分別墟至測試線， 籲並由測試線傳送測試電壓；二極體具有陽極與陰極，陰極耗接控制開關之 第三端’陽極接收控制電壓，依據控制電廢與測試電壓，提高控制開關的 第一端之電壓位準。 • 本㈣亦提出-餘晶顯示面板’包含：複數親躲、複數個控制 .開關及二極體。每-個控制開關分別具有第-端、第二端與第三端，第_ 端分別輕接每一條訊號線，第二端分別輕接至測試線，並由測試線傳送測 試電壓；二極體具有陽極與陰極，陰蝴接控細關之第三端，陽極接收 控制電壓，依據控制電屋與測試電麼，提高控制開關的第一端之電壓位準。 6 1325075 本發明亦提出一種液晶顯示面板的檢測方法，用以檢測具有複數條訊 號線之液晶顯示面板，該檢測方法包含下列步驟：分別耦接每一條訊號線 至每一個控制開關之第一端；分別耦接每一個控制開關之第二端至測試 線；由測試線傳送測試電壓；耦接控制開關之第三端至二極體之陰極；由 二極體之陽極接收控制電壓；依據控制電壓與測試電壓，提高控制開關的 第一端之電壓位準。 有關本發明的較佳實施例及其功效，茲配合圖式說明如後。 【實施方式】 請同時參照「第1圖」與「第2圖」，分別為液晶顯示面板的檢測電路之 一實施例示意圖(一)與(二）。兩圖之差異在於「第2圖」將「第丨圖」中的其 中一個控制開關10單獨繪示，以便於更詳盡之說明。本發明所提出之液晶 顯不面板的檢測電路’用以檢測具有複數條訊號線之液晶顯示面板，其中 液晶顯示面板包含複數條訊號線30，檢測電路包含：控制開關1〇、二極體 20、測試線40、測試電壓輸入端5〇及控制電壓輸入端6〇。 控制開關10對應液晶顯示面板1中的複數條訊號線3〇而設置，其中 每一個控制開關10分別具有第一端12、第二端14與第三端丨6。每一個控 制開關10的第一端12分別對應耦接訊號線30,其中訊號線3〇包含液晶顯 示面板1所具有之複數條資料線32或複數條掃描線34。控制開關1〇的第 二端14分別麵接至測試線4〇，並由測試線4〇傳送測試電壓輸入端5〇所提 供之測試訊號。 二極體20具有陽極22與陰極24，其中陰極24耦接控制開關1〇之第 7 1325075 低電位(-6伏特)轉為高電位(27伏特)時，由上方圖式可知因為沒有設置二 極體2〇,因此控制電壓無法藉由電容福合效應，而提高控制電壓(約等於二 極體20之陰極24的電壓值），因此，控制開關1〇之第一端^的最高電愿 僅有15伏特。反觀下方圖式，可發現因為設置二極體2〇，可使控制電壓在 瞬間由27伏特提高為45伏特(二極體之陰極Μ的電壓值瞬間提升），也就 是說控綱關10之閘極電壓瞬間提升，使得控綱關1〇之第一端12的電 壓位準提高為22轉，較原本未設置二極體Μ的裝置，提高了 7伏特的 電壓位準。其中，控制電壓、測試電壓與控制開關第一端的電壓並不以上 述之電壓值為限。 凊〜、第4圖」’該圖所示為液晶顯示面板的檢測方法之流程圖，用 以檢測具有概條職紅液晶顯和板，驗财法包釘列步驟。 步驟S10 ·分別輕接每一條訊號線至每一/^固控制開關之第一端。 步驟S2G :分_接每—個控制關之第二端至測試線。 步驟S30 :由測試線傳送測試電壓。 步驟S4〇 :耦接控制開關之第三端至二極體之陰極。 步驟S50 :由二極體之陽極接.收控制電壓，使二極體導通並將控制電壓 傳送至控制開關之第三端。 疋成步驟S50之後’可包含下列步驟：產生第一電容於控制開關之第一 ”第—端之間。產生第二電容於控制開關之第二端與第三端之間。藉由 -極體使控制開關之第三端與二極體之陰極間之電壓為浮動電壓（編㈣ voltage) 〇 1325075 步驟S6(K依據控制電壓與測試電壓，提高控制開關的第一端之電壓位 準。 雖然本發_技_容已經雜佳實施觸露如上，然其並非用以限 定本發明’任何熟習此技藝者，在不脫離本發明之精神所作些許之更動與 潤姊’皆應涵蓋於本發顿範_，因此本發明之保護軸當視後附之申、 請專利範圍所界定者為準。 【圖式簡單說明】1325075 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a method and method for detecting a job, and a circuit and a method for detecting a liquid crystal (10) panel and a liquid crystal display panel thereof. [Prior Art] The liquid crystal display panel (LCD panel) must pass the test procedure before it is manufactured. It is tested whether the operation of the thin film transistor (TFT) for controlling the display of each pixel in the liquid crystal display panel is normal through the detection program. The panel detection circuit disposed around the liquid crystal display panel differs in the layout of the detection method. The more common detection circuit wiring methods are ring short circuit wiring (sh〇rtlay〇m) and rod short circuit wiring. (short bar layout) two kinds of traditionally, whether it is the detection circuit of the ring short-circuit wiring or the detection circuit of the rod-shaped short-circuit wiring, a laser shear detection circuit is required after the detection, in order to prevent the inspection_路胃The normal operation of the LCD panel. However, the conventional approach requires an additional step of laser cutting, and laser cutting produces a number of cutting particles that affect the liquid crystal display panel. Therefore, in the prior art, a control switch is added between the short-circuit wiring and the scan line or the data line, and the control switch is turned on during the test, and the control switch is disconnected after the test is finished. In this way, the traditional use of laser cutting steps can be eliminated, resulting in a more simplified process and reduced cost. Generally, the potential of the control switch provided is equal to (or similar to) the potential of the gate clamp signal inside the liquid crystal display panel, so when the gate control signal is turned from a low potential to a high potential, it is limited to the component characteristics. The voltage value that can be supplied is limited', and the scan line in the display area cannot be fastened to the speed of 5 1325075 to the _ position. Therefore, it is only possible to increase the length of the _ by the extended gate signal, and to increase the time at which the signal is maintained at two potentials, or to increase the power-on value of the control signal to improve the charging of the liquid crystal panel. However, such an approach will lengthen the test time and also cause a large power consumption. How to improve the problems arising from the detection circuit of the liquid crystal display panel in the conventional technology, and it is an urgent issue to be solved. SUMMARY OF THE INVENTION The present invention proposes a detection circuit and method for a liquid crystal display panel and a liquid crystal display thereof. By the present invention, “installing green, _ job, and increasing the signal line potential” to increase the test precision, reducing the test time, and thus improving the test efficiency. The present invention proposes that the test __ circuit, the rib test is difficult The liquid crystal display panel of the plurality of signal lines includes: the plurality of control switches respectively have a first end, a second end and a third end respectively; the first end respectively corresponds to the light signal line, and the second end respectively leads to the test line Calling and transmitting the test voltage by the test line; the diode has an anode and a cathode, and the cathode is connected to the third end of the control switch to receive the control voltage, and according to the control of the electric waste and the test voltage, the voltage of the first end of the control switch is increased. • This (4) also proposes that the 'Crystal display panel' contains: a plurality of de-hiding, a plurality of controls, a switch and a diode. Each of the control switches has a first end, a second end and a third end, respectively _ The terminals are respectively connected to each signal line, the second end is lightly connected to the test line, and the test voltage is transmitted by the test line; the diode has an anode and a cathode, and the third end of the fine control is closed, and the anode receives the control. Voltage According to the control of the electric house and the test electric power, the voltage level of the first end of the control switch is increased. 6 1325075 The present invention also provides a liquid crystal display panel detecting method for detecting a liquid crystal display panel having a plurality of signal lines, The detecting method includes the following steps: respectively coupling each signal line to the first end of each control switch; respectively coupling the second end of each control switch to the test line; transmitting the test voltage by the test line; coupling the control switch a third end to the cathode of the diode; receiving a control voltage from the anode of the diode; increasing the voltage level of the first end of the control switch according to the control voltage and the test voltage. Preferred embodiments of the invention and their effects [Embodiment] Please refer to "1st drawing" and "2nd drawing" at the same time, which are schematic diagrams (1) and (2) of one embodiment of the detection circuit of the liquid crystal display panel. The difference between the two figures is that "the second picture" shows one of the control switches 10 in the "figure map" separately for further explanation. The detection circuit of the liquid crystal display panel of the present invention is for detecting a liquid crystal display panel having a plurality of signal lines, wherein the liquid crystal display panel comprises a plurality of signal lines 30, and the detection circuit comprises: a control switch 1 二, a diode 20 The test line 40, the test voltage input terminal 5〇 and the control voltage input terminal 6〇. The control switch 10 is disposed corresponding to a plurality of signal lines 3 in the liquid crystal display panel 1, wherein each of the control switches 10 has a first end 12, a second end 14, and a third end 丨6, respectively. The first end 12 of each of the control switches 10 is coupled to the signal line 30, wherein the signal line 3 includes a plurality of data lines 32 or a plurality of scan lines 34 of the liquid crystal display panel 1. The second end 14 of the control switch 1〇 is respectively connected to the test line 4〇, and the test signal provided by the test voltage input terminal 5〇 is transmitted from the test line 4〇. The diode 20 has an anode 22 and a cathode 24, wherein when the cathode 24 is coupled to the 7 1325075 of the control switch 1 低 low potential (-6 volts) to a high potential (27 volts), it can be seen from the above figure that there is no setting two The polar body is 2〇, so the control voltage cannot increase the control voltage (about the voltage value of the cathode 24 of the diode 20) by the capacitance blessing effect, and therefore, the highest wish of the first end of the control switch 1〇 Only 15 volts. On the other hand, the following figure shows that the control voltage can be increased from 27 volts to 45 volts in an instant (the voltage value of the cathode 二 of the diode is instantaneously increased) because of the setting of the diode 2 ,, that is, the control is closed. The gate voltage is instantaneously increased, so that the voltage level of the first terminal 12 of the control gate is increased to 22 rpm, which is a voltage level of 7 volts higher than that of the device which is not provided with the diode Μ. Wherein, the control voltage, the test voltage and the voltage at the first end of the control switch are not limited to the above-mentioned voltage values.凊~, 4th ”” This figure shows a flow chart of a method for detecting a liquid crystal display panel, which is used to detect a step of displaying a liquid crystal display panel. Step S10: Lightly connect each signal line to the first end of each of the control switches. Step S2G: The _ is connected to the second end of each control switch to the test line. Step S30: The test voltage is transmitted by the test line. Step S4: coupling the third end of the control switch to the cathode of the diode. Step S50: receiving the control voltage from the anode of the diode, turning on the diode and transmitting the control voltage to the third end of the control switch. After the step S50, the method may include the following steps: generating a first capacitance between the first end of the control switch and generating a second capacitance between the second end and the third end of the control switch. The voltage between the third end of the control switch and the cathode of the diode is a floating voltage (Editing (4) voltage) 〇1325075 Step S6 (K according to the control voltage and the test voltage, the voltage level of the first end of the control switch is raised. Although the present invention has been described above in detail, it is not intended to limit the invention to any of the skilled artisan, and some of the changes and simplifications that do not depart from the spirit of the invention should be covered. The invention is based on the fact that the protection shaft of the present invention is defined by the scope of the application and the scope of the patent.
第1圖：液晶顯示面板的檢測電路之_實施例示意圖(_) 第2圖.液晶顯示面板的檢測電路之一實施例示意圖(二) 第3圖.液晶顯示面板的檢測電路之電壓波形圖 第4圖.液晶顯不面板的檢測方法之流程圖 【主要元件符號說明】 1 :液晶顯示面板 10:控制開關 12 :第一端 14 :第二端 16 :第三端 20 :二極體 22 :陽極 24 :陰極 30 :訊號線 11 1325075 32 :資料線 34 :掃描線 40 :測試線 50 :測試電壓輸入端 . 60:控制電壓輸入端 . 70:第一電容 72 :第二電容 12Fig. 1 is a schematic diagram of a detection circuit of a liquid crystal display panel. (FIG. 2) A schematic diagram of an embodiment of a detection circuit of a liquid crystal display panel (2) Fig. 3 is a diagram showing a voltage waveform of a detection circuit of a liquid crystal display panel Fig. 4 is a flow chart of a method for detecting a liquid crystal display panel [Description of main components] 1 : Liquid crystal display panel 10: Control switch 12: first end 14: second end 16: third end 20: diode 22 : anode 24: cathode 30: signal line 11 1325075 32: data line 34: scan line 40: test line 50: test voltage input. 60: control voltage input. 70: first capacitor 72: second capacitor 12