TWI409535B - A liquid crystal display panel and the rescue circuit therein - Google Patents
A liquid crystal display panel and the rescue circuit therein Download PDFInfo
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本發明係關於一種液晶顯示面板，特別係關於一種具有資料線修補線和掃描線修補線的液晶顯示面板及其修補電路。The present invention relates to a liquid crystal display panel, and more particularly to a liquid crystal display panel having a data line repair line and a scan line repair line and a repair circuit therefor.
隨著半導體器件和顯示器製造技術的發展，具有圖像品質高、功耗低、輻射小等優越性能的液晶顯示面板已經逐漸成為市場的主流。典型地，液晶顯示面板包括一陣列基板(array substrate)、一彩色濾光片基板(color filter substrate)和位於陣列基板與彩色濾光片基板之間的液晶層。通常，彩色濾光片基板稱為上玻璃基板，並且陣列基板稱為下玻璃基板。With the development of semiconductor device and display manufacturing technology, liquid crystal display panels with superior image quality, low power consumption, and low radiation have gradually become the mainstream of the market. Typically, the liquid crystal display panel includes an array substrate, a color filter substrate, and a liquid crystal layer between the array substrate and the color filter substrate. Generally, a color filter substrate is referred to as an upper glass substrate, and an array substrate is referred to as a lower glass substrate.
在下玻璃基板上，形成有多條掃描線、多條資料線和多個畫素電路。其中，每個畫素電路被定義在一掃描線與相應資料線的交叉位置，每一畫素通過對應的掃描線來接收掃描信號，並且通過對應的資料線來接收畫素電壓，以便基於這些掃描線、資料線與畫素電路在該下玻璃基板上形成顯示區域。此外，在下玻璃基板上還可設置多條修補線(rescue line)，這些修補線的一部分形成於下玻璃基板上，另一部分重疊於這些資料線，即，修補線與資料線為部分相互上下交錯，且彼此電性絕緣。當資料線因缺陷而發生斷路現象時，利用雷射來熔接修補線與資料線的交錯重疊處(也稱為雷射熔接法：Laser Welding)，形成電性連接。從這個意義上說，修補線可作為某一缺陷資料線的替代線路，通過將控制信號改由修補線傳送至對應畫素以正常顯示圖像，從而大大降低報廢率。On the lower glass substrate, a plurality of scanning lines, a plurality of data lines, and a plurality of pixel circuits are formed. Wherein, each pixel circuit is defined at an intersection of a scan line and a corresponding data line, each pixel receives a scan signal through a corresponding scan line, and receives a pixel voltage through a corresponding data line, so as to be based on these The scan line, the data line, and the pixel circuit form a display area on the lower glass substrate. In addition, a plurality of repair lines may be disposed on the lower glass substrate, and a part of the repair lines are formed on the lower glass substrate, and another portion is overlapped with the data lines, that is, the repair lines and the data lines are partially interlaced And electrically insulated from each other. When the data line breaks due to defects, the laser is used to weld the interlaced overlap between the repair line and the data line (also known as Laser Welding) to form an electrical connection. In this sense, the repair line can be used as an alternative line for a certain defect data line, and the rejection signal rate is greatly reduced by changing the control signal from the repair line to the corresponding pixel to display the image normally.
但是，在當前液晶顯示面板中，修補電路大多設計為只針對下玻璃基板上的資料線缺陷，而並不能修復掃描線上的缺陷。因此，當一條或多條缺陷掃描線無法正常接收掃描信號時，修補電路也顯得無能為力。However, in current liquid crystal display panels, the repair circuit is mostly designed to only target data line defects on the lower glass substrate, and does not repair defects on the scan line. Therefore, when one or more defective scan lines cannot receive the scan signal normally, the repair circuit also appears to be powerless.
針對現有技術中液晶顯示面板的修補電路所存在的上述技術缺陷，本發明提供了一種具有資料線修補線和掃描線修補線的液晶顯示面板及其修補電路。In view of the above technical defects existing in the repair circuit of the liquid crystal display panel in the prior art, the present invention provides a liquid crystal display panel having a data line repair line and a scan line repair line and a repair circuit thereof.
依據本發明的一實施例，提供了一種液晶顯示面板修補電路。此修補電路至少包括：一資料線修補線、一掃描線修補線、一環繞線、一連接線、一第一導電層、一第二導電層和一熔接導電層。資料線修補線浮置絕緣橫跨資料線的一端，掃描線修補線浮置絕緣橫跨掃描線的一端。環繞線環繞液晶顯示面板並浮置絕緣橫跨掃描線與資料線的另一端，且環繞線部分重疊於掃描線修補線且電性絕緣。連接線的一端與資料線修補線部分重疊且電性絕緣，連接線的另一端與第一導電層電性耦合，更為具體地，連接線的另一端首先與運算放大器的輸入端電性連接，然後再通過運算放大器的輸出端與第一導電層電性連接。此外，熔接導電層位於環繞線的另一端，且與第一導電層及第二導電層部分重疊且電性絕緣。According to an embodiment of the invention, a liquid crystal display panel repair circuit is provided. The repairing circuit includes at least: a data line repairing line, a scanning line repairing line, a surrounding line, a connecting line, a first conductive layer, a second conductive layer and a welded conductive layer. The data line repair line floats across one end of the data line, and the scan line repair line floats across one end of the scan line. The surrounding line surrounds the liquid crystal display panel and is floatingly insulated across the other end of the scan line and the data line, and the surrounding line portion is overlapped with the scan line repair line and electrically insulated. One end of the connecting line is partially overlapped and electrically insulated from the data line repairing line, and the other end of the connecting line is electrically coupled to the first conductive layer. More specifically, the other end of the connecting line is first electrically connected to the input end of the operational amplifier. And then electrically connected to the first conductive layer through the output of the operational amplifier. In addition, the fused conductive layer is located at the other end of the surrounding line and partially overlaps and is electrically insulated from the first conductive layer and the second conductive layer.
較佳地，連接線與第一導電層間更包括一第一電位放大器。其中，第一電位放大器的輸入端電性連接連接線的另一端，第一電位放大器的輸出端電性連接第一導電層。Preferably, the connection line and the first conductive layer further comprise a first potential amplifier. The input end of the first potential amplifier is electrically connected to the other end of the connection line, and the output end of the first potential amplifier is electrically connected to the first conductive layer.
較佳地，環繞線與該第二導電層間，更包括一第二電位放大器。其中，第二電位放大器的輸入端電性連接第二導電層，第二電位放大器的輸出端電性連接環繞線的一端。Preferably, the surrounding line and the second conductive layer further comprise a second potential amplifier. The input end of the second potential amplifier is electrically connected to the second conductive layer, and the output end of the second potential amplifier is electrically connected to one end of the surrounding line.
較佳地，修補電路更包括一絕緣層，位於環繞線的另一端、第一導電層及第二導電層之上或之下。相應地，熔接導電層位於絕緣層之上或之下。Preferably, the repairing circuit further comprises an insulating layer located above or below the other end of the surrounding line, the first conductive layer and the second conductive layer. Accordingly, the fused conductive layer is located above or below the insulating layer.
依據本發明的又一實施例，提供了一種修補後之液晶顯示面板。此液晶顯示面板包括：一資料線修補線、一掃描線修補線、一第一導電層、一環繞線、一第二導電層、一熔接導電層和一絕緣層。資料線修補線橫跨多條資料線一端設置，並只與多條資料線之一電性連接。掃描線修補線浮置絕緣橫跨掃描線一端。環繞線環繞液晶顯示面板，並與資料線修補線電性連接之資料線的另一端電性連接，且環繞線與掃描線修補線部份重疊且電性絕緣。第一導電層與資料線修補線電性連接，並且第二導電層與環繞線的一端電性連接。熔接導電層部份重疊於環繞線的另一端、第一導電層及第二導電層，且電性連接環繞線的另一端與第一導電層。此外，絕緣層位於環繞線的另一端、第一導電層和第二導電層及熔接導電層之間。According to still another embodiment of the present invention, a repaired liquid crystal display panel is provided. The liquid crystal display panel comprises: a data line repair line, a scan line repair line, a first conductive layer, a surrounding line, a second conductive layer, a fused conductive layer and an insulating layer. The data line repair line is disposed across one end of the plurality of data lines and is electrically connected only to one of the plurality of data lines. The scan line repair line is floating across the end of the scan line. The surrounding line surrounds the liquid crystal display panel and is electrically connected to the other end of the data line electrically connected to the data line repairing line, and the surrounding line and the scanning line repairing line are partially overlapped and electrically insulated. The first conductive layer is electrically connected to the data line repairing line, and the second conductive layer is electrically connected to one end of the surrounding line. The fused conductive layer partially overlaps the other end of the surrounding line, the first conductive layer and the second conductive layer, and is electrically connected to the other end of the surrounding line and the first conductive layer. Further, the insulating layer is located between the other end of the surrounding line, the first conductive layer and the second conductive layer, and the welded conductive layer.
較佳地，資料線之一為一具有缺陷的資料線。依據一實施例，雷射熔接第一預修補點以電性連接資料線修補線與具有缺陷的資料線。雷射熔接第二預修補點以電性連接環繞線與具有缺陷的資料線的另一端。雷射熔接第三預修補點以電性連接熔接導電層與環繞線的另一端，且雷射熔接第四預修補點以電性連接熔接導電層與第一導電層。Preferably, one of the data lines is a defective data line. According to an embodiment, the first pre-patching point is laser-fused to electrically connect the data line repair line with the defective data line. The laser fuses the second pre-patching point to electrically connect the surrounding line to the other end of the defective data line. The third pre-patching point of the laser fusion is electrically connected to the other end of the fused conductive layer and the surrounding line, and the fourth pre-patching point of the laser splicing is electrically connected to the fused conductive layer and the first conductive layer.
較佳地，液晶顯示面板更包括一連接線，以電性連接第一導電層與資料線修補線。此外，更包括一第五預修補點，雷射熔接第五預修補點以電性連接資料線修補線與連接線。Preferably, the liquid crystal display panel further comprises a connecting wire for electrically connecting the first conductive layer and the data line repairing line. In addition, a fifth pre-fixation point is further included, and the fifth pre-patching point of the laser welding is electrically connected to the data line repairing line and the connecting line.
較佳地，第一導電層與資料線修補線間更包括一電位放大器。其中電位放大器的輸入端電性連接資料線修補線，電位放大器的輸出端電性連接第一導電層。Preferably, the first conductive layer and the data line repairing line further comprise a potential amplifier. The input end of the potential amplifier is electrically connected to the data line repairing line, and the output end of the potential amplifier is electrically connected to the first conductive layer.
依據本發明的又一實施例，提供了一種修補後之液晶顯示面板。此液晶顯示面板包括：一掃描線修補線、一資料線修補線、一連接線、一環繞線、一第一導電層、一第二導電層、一熔接導電層和一絕緣層。掃描線修補線橫跨多條掃描線一端設置，並只與多條掃描線之一電性連接。資料線修補線浮置絕緣橫跨資料線一端。環繞線環繞液晶顯示面板，並與掃描線修補線電性連接之掃描線的另一端電性連接，且與掃描線修補線電性連接。連接線的一端與資料線修補線重疊且電性絕緣，連接線的另一端與第一導電層電性連接。第二導電層與環繞線的一端電性連接，以及熔接導電層部份重疊於環繞線的另一端、第一導電層及第二導電層，且電性連接環繞線的另一端與第二導電層。絕緣層位於環繞線的另一端、第一導電層、第二導電層及該熔接導電層之間。According to still another embodiment of the present invention, a repaired liquid crystal display panel is provided. The liquid crystal display panel comprises: a scan line repair line, a data line repair line, a connection line, a surrounding line, a first conductive layer, a second conductive layer, a fused conductive layer and an insulating layer. The scan line repair line is disposed across one end of the plurality of scan lines and is electrically connected only to one of the plurality of scan lines. The data line repair line is floating and insulated across one end of the data line. The surrounding line surrounds the liquid crystal display panel, and is electrically connected to the other end of the scan line electrically connected to the scan line repair line, and is electrically connected to the scan line repair line. One end of the connecting line overlaps with the data line repairing line and is electrically insulated, and the other end of the connecting line is electrically connected to the first conductive layer. The second conductive layer is electrically connected to one end of the surrounding line, and the welded conductive layer partially overlaps the other end of the surrounding line, the first conductive layer and the second conductive layer, and is electrically connected to the other end of the surrounding line and the second conductive Floor. The insulating layer is located between the other end of the surrounding line, the first conductive layer, the second conductive layer, and the solder conductive layer.
較佳地，多條掃描線之一為一具有缺陷的掃描線。依據一實施例，雷射熔接第一預修補點以電性連接掃描線修補線與具有缺陷的掃描線。雷射熔接第二預修補點以電性連接環繞線與具有缺陷的掃描線的另一端。雷射熔接第三預修補點以電性連接環繞線與掃描線修補線。雷射熔接第四預修補點以電性連接熔接導電層與環繞線的另一端，且雷射熔接第五預修補點以電性連接熔接導電層與第二導電層。Preferably, one of the plurality of scan lines is a scan line having defects. According to an embodiment, the first pre-patching point is laser-fused to electrically connect the scan line repair line with the defective scan line. The laser fuses the second pre-patching point to electrically connect the surrounding line to the other end of the defective scan line. The laser welds the third pre-patching point to electrically connect the surrounding line and the scan line repair line. The laser is connected to the fourth pre-fixing point to electrically connect the other end of the conductive layer and the surrounding line, and the laser is welded to the fifth pre-fixing point to electrically connect the conductive layer and the second conductive layer.
較佳地，環繞線與第二導電層間更包括一電位放大器。Preferably, a potential amplifier is further included between the surrounding line and the second conductive layer.
下面參照附圖，對本發明的具體實施方式作進一步的詳細描述。在整個描述中，相同的附圖標記表示相同的部件。應當理解的是，在本申請的說明書附圖中，用於電性連接某一元件與另一元件的「實線」和「虛線」僅僅是為了方便描述本發明的具體實施例，並不能誘導本領域的技術人員將其理解為，實線表示電性連接且虛線表示電性隔離。還應當理解的是，在下文描述中，「第一」、「第二」、「第三」只是為了方便描述本發明的具體實施例並對相同類型的元件功能加以區隔，並不是對本申請進行某種約束或限定。Specific embodiments of the present invention will be further described in detail below with reference to the drawings. Throughout the description, the same reference numerals denote the same components. It should be understood that in the drawings of the present application, "solid line" and "dotted line" for electrically connecting one element to another element are merely for convenience of describing a specific embodiment of the present invention and cannot be induced. Those skilled in the art will understand that solid lines indicate electrical connections and dashed lines indicate electrical isolation. It should also be understood that in the following description, "first", "second", and "third" are merely used to facilitate the description of specific embodiments of the present invention and to distinguish the functions of the same type of elements, and are not intended to be Make some kind of constraint or qualification.
第1圖係繪示現有技術中的液晶顯示面板用於修補資料線的修補電路的原理示意圖。在第1圖中，液晶顯示面板的修補電路至少包括：一環繞線100、多條資料線102、多條掃描線104、資料線斷點(data line open)106、多條資料線修補線108、放大器110和預修補點112。需要指出的是，預修補點112位於液晶顯示面板上多條資料線102中的任意一條與環繞線100的部分重疊區域。在一般情況下，預修補點112雖然位於二者的部分重疊區域，但是資料線102與環繞線100電性絕緣，只有在諸如雷射熔接於預修補點112時，資料線102中的任意一條才電性連接環繞線100。FIG. 1 is a schematic diagram showing the principle of a repair circuit for repairing a data line of a liquid crystal display panel in the prior art. In FIG. 1 , the repair circuit of the liquid crystal display panel includes at least: a surrounding line 100 , a plurality of data lines 102 , a plurality of scanning lines 104 , a data line open 106 , and a plurality of data line repair lines 108 . , amplifier 110 and pre-patching point 112. It should be noted that the pre-fixing point 112 is located in a partially overlapping area of any one of the plurality of data lines 102 on the liquid crystal display panel and the surrounding line 100. In general, the pre-fixed point 112 is located in a partially overlapping area of the two, but the data line 102 is electrically insulated from the surrounding line 100, only if any of the data lines 102 are fused, such as when the laser is fused to the pre-repair point 112. The surrounding line 100 is electrically connected.
環繞線100環繞於液晶顯示面板，浮置絕緣橫跨在若干條資料線102的一端，環繞線100與資料線修補線108部分重疊並且電性絕緣。此外，資料線修補線108浮置絕緣橫跨在對應資料線102的另一端。當多條資料線102中的某一資料線發生電性故障時，通過熔接環繞線100與資料線修補線108的部分重疊區域114，使資料線修補線108代替此缺陷資料線，來接收顯示單元的畫素電壓，並顯示圖像。當具有斷點106的資料線通過資料線修補線108維修後，其修補電路的流向根據第1圖可用箭頭表示為：具有斷點106的資料線之一端首先透過連接點116電性連接至資料線修補線108，然後資料線修補線108透過環繞線100與資料線修補線108的部分重疊區域114電性連接至環繞線100，上述電性連接的方式可採用雷射熔接法(laser welding)。環繞線可另包含一放大器110，使得訊號經由資料線修補線108及環繞線100再傳送至具有斷點106的資料線的另一端時，不至於訊號衰減過多。最後，環繞線100透過雷射熔接後的預修補點112電性連接於具有斷點106的資料線的另一端，以實現資料線的修補功能。The surrounding line 100 surrounds the liquid crystal display panel, and the floating insulation spans one end of the plurality of data lines 102. The surrounding line 100 partially overlaps and is electrically insulated from the data line repairing line 108. In addition, the data line repair line 108 is floating across the other end of the corresponding data line 102. When an electrical fault occurs in a certain data line of the plurality of data lines 102, the partial overlap area 114 of the data line repair line 108 is welded and the data line repair line 108 is replaced by the defect data line to receive the display. The pixel voltage of the cell and display the image. When the data line having the breakpoint 106 is repaired by the data line repair line 108, the flow direction of the repair circuit can be represented by an arrow according to FIG. 1 : one end of the data line having the break point 106 is first electrically connected to the data through the connection point 116. The wire repairing line 108 is then electrically connected to the surrounding line 100 through the partial overlapping area 114 of the surrounding line 100 and the data line repairing line 108. The electrical connection can be performed by laser welding. . The surround line may further include an amplifier 110 such that when the signal is transmitted to the other end of the data line having the breakpoint 106 via the data line repair line 108 and the surround line 100, the signal is not excessively attenuated. Finally, the surrounding line 100 is electrically connected to the other end of the data line having the break point 106 through the laser-prefixed pre-patching point 112 to implement the data line repair function.
由上面的描述可知，現有技術中的液晶顯示面板若出現缺陷資料線時，可以透過環繞在面板外緣的環繞線和資料線修補線來實現正常的圖像顯示。然而，該顯示面板的修補電路也僅僅只解決了資料線發生電性故障時的信號傳輸問題，卻並未涉及到缺陷掃描線的修復問題。這樣一來，如果液晶顯示面板在透過掃描線向畫素處的薄膜電晶體傳遞掃描信號出現電性斷路時，板上的修補電路並不能予以解決。As can be seen from the above description, when a defective data line appears in the liquid crystal display panel of the prior art, normal image display can be realized through the surrounding line and the data line repairing line surrounding the outer edge of the panel. However, the repair circuit of the display panel only solves the problem of signal transmission when the data line is electrically faulty, but does not involve the repair of the defective scan line. In this way, if the liquid crystal display panel is electrically disconnected by transmitting a scanning signal to the thin film transistor passing through the scanning line, the repair circuit on the board cannot be solved.
為了解決如第1圖所示的液晶顯示面板中出現的技術缺陷，第2圖係繪示本發明的一個實施例，具有資料線修補線和掃描線修補線的液晶顯示面板的結構示意圖。採用第2圖的液晶顯示面板上的修補電路，不僅可以修復玻璃基板上的資料線，還可以修復玻璃基板上的掃描線。In order to solve the technical defects occurring in the liquid crystal display panel as shown in FIG. 1, FIG. 2 is a schematic structural view of a liquid crystal display panel having a data line repair line and a scan line repair line according to an embodiment of the present invention. The repair circuit on the liquid crystal display panel of FIG. 2 can not only repair the data lines on the glass substrate, but also repair the scan lines on the glass substrate.
更為詳細地，第2圖中的液晶顯示面板的修補電路至少包括：環繞線200、多條資料線202、多條掃描線204、多條資料線修補線206、連接線208、運算放大器210、切換元件212和多條掃描線修補線214。In more detail, the repair circuit of the liquid crystal display panel in FIG. 2 includes at least a surrounding line 200, a plurality of data lines 202, a plurality of scan lines 204, a plurality of data line repair lines 206, a connection line 208, and an operational amplifier 210. The switching element 212 and the plurality of scan line repair lines 214.
環繞線200環繞於液晶顯示面板，浮置絕緣橫跨在若干條資料線202的一端，並且環繞線200的一部份與多條掃描線修補線214部份重疊且電性絕緣。此外，連接線208的一端與資料線修補線206部分重疊且電性絕緣，連接線208的另一端電性連接至切換元件212。The surrounding wire 200 surrounds the liquid crystal display panel, and the floating insulation spans one end of the plurality of data lines 202, and a portion of the surrounding wire 200 partially overlaps and is electrically insulated from the plurality of scanning line repairing lines 214. In addition, one end of the connecting line 208 is partially overlapped and electrically insulated from the data line repairing line 206 , and the other end of the connecting line 208 is electrically connected to the switching element 212 .
需要指出的是，在第2圖中，掃描線修補線214浮置絕緣橫跨多條掃描線204的一端，資料線修補線206浮置絕緣多條資料線202的一端，環繞線200的一部分與掃描線修補線214部份重疊且電性絕緣，連接線208的一端與資料線修補線206部份重疊且電性絕緣。當液晶顯示面板要求透過修補電路來修復一條或多條資料線時，可採用laser welding來熔接資料線修補線206與具有缺陷之資料線202的重疊區域以及連接線208與資料線修補線206的重疊區域，然後再利用切換元件212上的電性切換，在環繞線200與資料線修補線206之間形成電性通路；類似地，當液晶顯示面板要求透過修補電路來修復一條或多條掃描線204時，可採用laser welding來熔接掃描線修補線214與具有缺陷之掃描線204的重疊區域以及環繞線200與掃描線修補線214的重疊區域，然後再利用切換元件212上的電性切換，在環繞線200與掃描線修補線214之間形成電性通路。It should be noted that, in FIG. 2, the scan line repair line 214 is floatingly insulated across one end of the plurality of scan lines 204, and the data line repair line 206 is floating to insulate one end of the plurality of data lines 202, and surrounds a portion of the line 200. The scan line repair line 214 is partially overlapped and electrically insulated, and one end of the connection line 208 is partially overlapped and electrically insulated from the data line repair line 206. When the liquid crystal display panel requires repairing one or more data lines through the repair circuit, laser welding may be used to weld the overlapping area of the data line repair line 206 and the defective data line 202 and the connection line 208 and the data line repair line 206. The overlapping regions, and then the electrical switching on the switching element 212, form an electrical path between the surrounding line 200 and the data line repair line 206; similarly, when the liquid crystal display panel requires repairing one or more scans through the repair circuit In the case of the line 204, laser welding may be used to weld the overlap area of the scan line repair line 214 and the defective scan line 204 and the overlap area of the surround line 200 and the scan line repair line 214, and then use the electrical switching on the switching element 212. An electrical path is formed between the surrounding line 200 and the scan line repair line 214.
在第2圖中，放大器210包括第一放大器和第二放大器，其中，第一放大器用於電性連接切換元件212和連接線208，第二放大器用於電性連接環繞線200和切換元件212。當修補電路執行修復操作以消除資料線上的電性缺陷時，連接線208電性連接至第一放大器的正輸入端(以符號“+”標示)，並且第一放大器的輸出端(以符號“-”標示)透過切換元件212電性連接至環繞線200；同樣，當修補電路執行修復操作以消除掃描線上的電性缺陷時，環繞線200的一端透過切換元件212電性連接至第二放大器的正輸入端(以符號“+”標示)，並且第二放大器的輸出端(以符號“-”標示)電性連接至環繞線200的另一端。In FIG. 2, the amplifier 210 includes a first amplifier and a second amplifier, wherein the first amplifier is used to electrically connect the switching element 212 and the connection line 208, and the second amplifier is used to electrically connect the surrounding line 200 and the switching element 212. . When the repair circuit performs a repair operation to eliminate electrical defects on the data line, the connection line 208 is electrically coupled to the positive input of the first amplifier (indicated by the symbol "+"), and the output of the first amplifier (with the symbol " - "indicating" is electrically connected to the surrounding line 200 through the switching element 212; likewise, when the repairing circuit performs a repairing operation to eliminate electrical defects on the scanning line, one end of the surrounding line 200 is electrically connected to the second amplifier through the switching element 212 The positive input terminal (indicated by the symbol "+"), and the output of the second amplifier (indicated by the symbol "-") is electrically connected to the other end of the surround line 200.
由上述可知，第2圖中的切換元件212是修復掃描線或者資料線的重要元件之一。也就是說，切換元件既可以電性連接環繞線與掃描線修補線，也可以電性連接環繞線與資料線修補線。為了更加清楚地描述切換元件的內部結構，第3圖係繪示第2圖的切換元件中第一導電層、第二導電層以及熔接導電層之間位置關係的示意圖。As can be seen from the above, the switching element 212 in Fig. 2 is one of the important elements for repairing a scanning line or a data line. That is to say, the switching component can electrically connect the surrounding line and the scanning line repairing line, or electrically connect the surrounding line and the data line repairing line. In order to more clearly describe the internal structure of the switching element, FIG. 3 is a schematic diagram showing the positional relationship between the first conductive layer, the second conductive layer, and the welded conductive layer in the switching element of FIG.
在第3圖中，切換元件212至少包括熔接導電層30、中間絕緣層32、與環繞線一端電性連接的金屬層34、第一導電層36和第二導電層38。其中，第一導電層36與連接線的一端電性連接，第二導電層38與環繞線的另一端電性連接。在其中一種實施例，連接線與第一導電層36之間更包括第一電位放大器，其中第一電位放大器的正輸入端電性連接此連接線的一端，第一電位放大器的輸出端電性連接該第一導電層36。在其中一種實施例，環繞線與第二導電層38間更包括第二電位放大器，其中第二電位放大器的正輸入端電性連接第二導電層38，第二電位放大器的輸出端電性連接此環繞線的另一端。本領域的普通技術人員應當理解，第一電位放大器和第二電位放大器可以採用單運算放大器的電路設計，也可以採用雙運算放大器的電路設計。例如，當掃描線上的掃描電壓與資料線上的畫素電壓基準不同時，切換元件中的第一和第二電位放大器採用雙運算放大器設計。例如，當採用單運算放大器設計時，該運算放大器的電源電壓必須大於掃描電壓和畫素電壓中的最大值。In FIG. 3, the switching element 212 includes at least a fused conductive layer 30, an intermediate insulating layer 32, a metal layer 34 electrically connected to one end of the surrounding line, a first conductive layer 36, and a second conductive layer 38. The first conductive layer 36 is electrically connected to one end of the connecting line, and the second conductive layer 38 is electrically connected to the other end of the surrounding line. In one embodiment, the first potential amplifier is further included between the connection line and the first conductive layer 36, wherein the positive input end of the first potential amplifier is electrically connected to one end of the connection line, and the output end of the first potential amplifier is electrically connected. The first conductive layer 36 is connected. In one embodiment, the second potential amplifier is further included between the surrounding line and the second conductive layer 38, wherein the positive input terminal of the second potential amplifier is electrically connected to the second conductive layer 38, and the output end of the second potential amplifier is electrically connected. The other end of this surround line. It will be understood by those skilled in the art that the first potential amplifier and the second potential amplifier may adopt a circuit design of a single operational amplifier or a circuit design of a dual operational amplifier. For example, when the scan voltage on the scan line is different from the pixel voltage reference on the data line, the first and second potential amplifiers in the switching element are designed with a dual operational amplifier. For example, when using a single op amp design, the op amp's supply voltage must be greater than the maximum of the scan voltage and pixel voltage.
本領域的普通技術人員還應該理解，中間絕緣層32位於熔接導電層30和第一導電層36或第二導電層38之間，因此，絕緣層32可以位於第一導電層36或第二導電層38的上方或下方，相應地，熔接導電層30應當位於絕緣層32的上方或下方。It should also be understood by those skilled in the art that the intermediate insulating layer 32 is located between the fused conductive layer 30 and the first conductive layer 36 or the second conductive layer 38. Therefore, the insulating layer 32 may be located at the first conductive layer 36 or the second conductive layer. Above or below layer 38, correspondingly, the fused conductive layer 30 should be above or below insulating layer 32.
在第3圖中，預修補點300和302均位於熔接導電層30和與環繞線一端電性連接的金屬層34的部分重疊區域，預修補點304位於熔接導電層30和第二導電層38的部分重疊區域，以及預修補點306位於熔接導電層30和第一導電層36的部分重疊區域。不難看出，雷射熔接預修補點300或302可以電性連接金屬層34和熔接導電層30，雷射熔接預修補點304可以電性連接熔接導電層30和第二導電層38，以及雷射熔接預修補點306可以電性連接熔接導電層30和第一導電層36。並且，當雷射熔接預修補點300和304時，液晶顯示面板的修補電路用於修復掃描線上的電性故障。當雷射熔接預修補點302和306時，液晶顯示面板的修補電路用於修復資料線上的電性故障。本領域的普通技術人員還應當理解，當雷射熔接預修補點302和306時，與金屬層34電性連接的環繞線一端已經電性連接至資料線修補線，此時，不應再雷射熔接預修補點300和304。這是因為，熔接導電層30在同一時刻只能電性連接至資料線修補線或者掃描線修補線。為了分別說明液晶顯示面板中的修補電路執行資料線修復和掃描線修復的電路流向，第4圖係繪示第2圖中的液晶顯示面板上的修補電路用於修補資料線的迴路走向示意圖，第5圖係繪示第2圖中的液晶顯示面板上的修補電路用於修補掃描線的迴路走向示意圖。在第4圖和第5圖中，箭頭示意性地表示電路迴路的走向。In FIG. 3, pre-fixed points 300 and 302 are both located in a partially overlapping region of the fused conductive layer 30 and the metal layer 34 electrically connected to one end of the surrounding line, and the pre-patching point 304 is located at the fused conductive layer 30 and the second conductive layer 38. The partially overlapped regions, and the pre-fixed dots 306 are located in a partially overlapping region of the fused conductive layer 30 and the first conductive layer 36. It is not difficult to see that the laser welding pre-fixing point 300 or 302 can electrically connect the metal layer 34 and the fusion conductive layer 30, and the laser welding pre-fixing point 304 can electrically connect the fusion conductive layer 30 and the second conductive layer 38, and the lightning The shot fusion pre-fixation point 306 can electrically connect the fusion conductive layer 30 and the first conductive layer 36. Moreover, when the laser pre-fixes the points 300 and 304, the repair circuit of the liquid crystal display panel is used to repair an electrical fault on the scan line. When the laser welds the pre-patching points 302 and 306, the repair circuit of the liquid crystal display panel is used to repair electrical faults on the data line. It should also be understood by those skilled in the art that when the laser pre-fixes the points 302 and 306, one end of the surrounding line electrically connected to the metal layer 34 is electrically connected to the data line repairing line. The shots are pre-patched to points 300 and 304. This is because the fused conductive layer 30 can only be electrically connected to the data line repair line or the scan line repair line at the same time. In order to separately explain the circuit flow of the repair circuit in the liquid crystal display panel to perform data line repair and scan line repair, FIG. 4 is a schematic diagram showing the loop path of the repair circuit on the liquid crystal display panel in FIG. 2 for repairing the data line. FIG. 5 is a schematic diagram showing the circuit of the repair circuit on the liquid crystal display panel in FIG. 2 for repairing the scan line. In Figures 4 and 5, the arrows schematically indicate the course of the circuit loop.
應當指出，第4圖和第5圖中的修補電路只是示意性地描述了依據本發明的一實施例予以修復資料線和掃描線的電路原理，但本發明的目的不只侷限於此。在第4圖中，修補電路至少包括環繞線400、資料線斷點402、多條資料線修補線404、連接線406、切換元件408、電位放大器410和電位放大器412。在一實施例中，切換元件408對應於第2圖中的切換元件212，並且其內部結構對應於第3圖中金屬層34、第一導電層36和第二導電層38之間的位置關係。It should be noted that the repair circuits in Figs. 4 and 5 only schematically illustrate the circuit principle for repairing data lines and scan lines in accordance with an embodiment of the present invention, but the object of the present invention is not limited thereto. In FIG. 4, the repair circuit includes at least a wraparound line 400, a data line breakpoint 402, a plurality of data line repair lines 404, a connection line 406, a switching element 408, a potential amplifier 410, and a potential amplifier 412. In an embodiment, the switching element 408 corresponds to the switching element 212 in FIG. 2, and its internal structure corresponds to the positional relationship between the metal layer 34, the first conductive layer 36 and the second conductive layer 38 in FIG. .
在多條資料線中的某一資料線發生電性故障時，首先，雷射熔接於預修補點414以電性連接資料線修補線404和該缺陷資料線的一端，然後，雷射熔接於預修補點416以電性連接環繞線400與該缺陷資料線的另一端。與此同時，雷射熔接於預修補點418以電性連接資料線修補線404和連接線406。最後，在切換元件408中，雷射熔接於預修補點420以電性連接熔接導電層30和第一導電層36，以及雷射熔接於預修補點422以電性連接熔接導電層30和金屬層34。依據本發明的一實施例，預修補點420對應於第3圖中的預修補點306，預修補點422對應於第3圖中的預修補點302。值得一提的是，在此各預修補點電性連接兩線段或兩導電層之方法為雷射熔接法(laser welding)，但並不以此為限。執行上述操作後，修復資料線的電路迴路可以表述為，缺陷資料線的一端透過資料線修補線404和連接線406電性連接至切換元件408，並經由切換元件408電性連接至環繞線400，最後透過雷射熔接後的預修補點416電性連接至該缺陷資料線的另一端。在本發明的一實施例中，電位放大器410被設置在切換元件408與資料線修補線404之間，其輸入端電性連接此資料線修補線404，並且其輸出端電性連接至切換元件408。When an electrical fault occurs in one of the plurality of data lines, first, the laser is welded to the pre-repairing point 414 to electrically connect the data line repairing line 404 and one end of the defective data line, and then the laser is welded to The pre-patching point 416 electrically connects the surrounding line 400 to the other end of the defective data line. At the same time, the laser is welded to the pre-patching point 418 to electrically connect the data line repair line 404 and the connection line 406. Finally, in the switching element 408, the laser is fused to the pre-repairing point 420 to electrically connect the fused conductive layer 30 and the first conductive layer 36, and the laser is fused to the pre-repairing point 422 to electrically connect the fused conductive layer 30 and the metal. Layer 34. According to an embodiment of the invention, the pre-patching point 420 corresponds to the pre-patching point 306 in FIG. 3, and the pre-patch point 422 corresponds to the pre-patching point 302 in FIG. It is worth mentioning that the method of electrically connecting the two line segments or the two conductive layers at each pre-repair point is laser welding, but is not limited thereto. After the above operations are performed, the circuit circuit of the repair data line can be expressed as one end of the defective data line is electrically connected to the switching element 408 through the data line repairing line 404 and the connecting line 406, and is electrically connected to the surrounding line 400 via the switching element 408. Finally, the pre-fixed point 416 after the laser welding is electrically connected to the other end of the defect data line. In an embodiment of the invention, the potential amplifier 410 is disposed between the switching element 408 and the data line repairing line 404, and the input end thereof is electrically connected to the data line repairing line 404, and the output end thereof is electrically connected to the switching element. 408.
在理解第4圖中用於修復資料線的修補電路後，用於修復掃描線的修補電路將會變得容易。在第5圖中，修補電路至少包括環繞線500、掃描線斷點502、多條掃描線修補線504、切換元件506、電位放大器508和電位放大器510。在一實施例中，切換元件506對應於第2圖中的切換元件212和第4圖中的切換元件408，並且其內部結構對應於第3圖中金屬層34、第一導電層36和第二導電層38之間的位置關係。After understanding the repair circuit for repairing the data line in FIG. 4, the repair circuit for repairing the scan line will become easy. In FIG. 5, the repair circuit includes at least a wraparound line 500, a scan line breakpoint 502, a plurality of scan line repair lines 504, a switching element 506, a potential amplifier 508, and a potential amplifier 510. In an embodiment, the switching element 506 corresponds to the switching element 212 in FIG. 2 and the switching element 408 in FIG. 4, and its internal structure corresponds to the metal layer 34, the first conductive layer 36 and the third in FIG. The positional relationship between the two conductive layers 38.
在多條掃描線中的某一掃描線發生電性故障時，首先，雷射熔接於預修補點512以電性連接掃描線修補線504和該缺陷掃描線的一端，然後，雷射熔接於預修補點514以電性連接環繞線500與該缺陷掃描線的另一端。與此同時，雷射熔接於預修補點516以電性連接掃描線修補線504和環繞線500。最後，在切換元件506中，雷射熔接於預修補點518以電性連接熔接導電層30和金屬層34，以及雷射熔接於預修補點520以電性連接熔接導電層30和第二導電層38。依據本發明的一實施例，預修補點518對應於第3圖中的預修補點300，預修補點520對應於第3圖中的預修補點304。執行上述操作後，修復掃描線的電路迴路可以表述為，缺陷掃描線的一端透過掃描線修補線504和環繞線500電性連接至切換元件506，並經由切換元件506電性連接至環繞線500的另一端，最後透過雷射熔接後的預修補點514電性連接至該缺陷掃描線的另一端。值得一提的是，在此各預修補點電性連接兩線段或兩導電層之方法可為雷射熔接法(laser welding)，但不以此為限。在本發明的一實施例中，電位放大器510被設置在切換元件506與環繞線500之間，其輸入端電性連接此切換元件506，並且其輸出端電性連接至環繞線500的另一端。When an electrical fault occurs in one of the plurality of scan lines, first, the laser is soldered to the pre-fixed point 512 to electrically connect the scan line repair line 504 and one end of the defect scan line, and then the laser is welded to The pre-patching point 514 electrically connects the surrounding line 500 to the other end of the defective scan line. At the same time, the laser is fused to the pre-repair point 516 to electrically connect the scan line repair line 504 and the surround line 500. Finally, in the switching element 506, the laser is fused to the pre-repairing point 518 to electrically connect the fused conductive layer 30 and the metal layer 34, and the laser is fused to the pre-repairing point 520 to electrically connect the fused conductive layer 30 and the second conductive Layer 38. According to an embodiment of the invention, the pre-patching point 518 corresponds to the pre-patching point 300 in FIG. 3, and the pre-patch point 520 corresponds to the pre-patching point 304 in FIG. After the above operations are performed, the circuit circuit of the repair scan line can be expressed as one end of the defective scan line is electrically connected to the switching element 506 through the scan line repair line 504 and the surround line 500, and is electrically connected to the surround line 500 via the switching element 506. The other end is finally electrically connected to the other end of the defective scan line through the laser-welded pre-fixed point 514. It is worth mentioning that the method of electrically connecting the two line segments or the two conductive layers in each pre-repairing point may be laser welding, but not limited thereto. In an embodiment of the invention, the potential amplifier 510 is disposed between the switching element 506 and the surrounding line 500, the input end of which is electrically connected to the switching element 506, and the output end of which is electrically connected to the other end of the surrounding line 500. .
採用本發明中液晶顯示面板的修補電路，不僅可以實現缺陷資料線上電性故障的可修復能力，而且還可以實現缺陷掃描線上電性故障的可修復能力，從而減少產品的報廢率。此外，在修復資料線或掃描線時，該修補電路使用切換元件實現了單一走線的雙向功能。By adopting the repair circuit of the liquid crystal display panel of the invention, not only the repairability of the electrical fault on the defective data line can be realized, but also the repairability of the electrical fault on the defective scan line can be realized, thereby reducing the scrap rate of the product. In addition, when repairing data lines or scan lines, the patching circuit uses a switching element to achieve a two-way function of a single trace.
100．．．環繞線100. . . Surround line
102．．．資料線102. . . Data line
104．．．掃描線104. . . Scanning line
106．．．掃描線斷點106. . . Scan line breakpoint
108．．．掃描線修補線108. . . Scanning line repair line
400．．．環繞線400. . . Surround line
402．．．資料線斷點402. . . Data line breakpoint
404．．．資料線修補線404. . . Data line repair line
406．．．連接線406. . . Cable
408．．．切換元件408. . . Switching element
110．．．運算放大器110. . . Operational Amplifier
112．．．預修補點112. . . Pre-patching point
114．．．部分重疊區域114. . . Partially overlapping area
116．．．連接點116. . . Junction
200．．．環繞線200. . . Surround line
202．．．資料線202. . . Data line
204．．．掃描線204. . . Scanning line
206．．．資料線修補線206. . . Data line repair line
208．．．連接線208. . . Cable
210．．．運算放大器210. . . Operational Amplifier
212．．．切換元件212. . . Switching element
214．．．掃描線修補線214. . . Scanning line repair line
30．．．熔接導電層30. . . Fusion conductive layer
32．．．中間絕緣層32. . . Intermediate insulation
34．．．金屬層34. . . Metal layer
36．．．第一導電層36. . . First conductive layer
38．．．第二導電層38. . . Second conductive layer
300．．．預修補點300. . . Pre-patching point
302．．．預修補點302. . . Pre-patching point
304．．．預修補點304. . . Pre-patching point
306．．．預修補點306. . . Pre-patching point
410．．．電位放大器410. . . Potential amplifier
412．．．電位放大器412. . . Potential amplifier
414．．．預修補點414. . . Pre-patching point
416．．．預修補點416. . . Pre-patching point
418．．．預修補點418. . . Pre-patching point
420．．．預修補點420. . . Pre-patching point
422．．．預修補點422. . . Pre-patching point
500．．．環繞線500. . . Surround line
502．．．掃描線斷點502. . . Scan line breakpoint
504．．．掃描線修補線504. . . Scanning line repair line
506．．．切換元件506. . . Switching element
508．．．電位放大器508. . . Potential amplifier
510．．．電位放大器510. . . Potential amplifier
512．．．預修補點512. . . Pre-patching point
514．．．預修補點514. . . Pre-patching point
516．．．預修補點516. . . Pre-patching point
518．．．預修補點518. . . Pre-patching point
520．．．預修補點520. . . Pre-patching point
為讓本發明之上述和其他目的、特徵、優點與實施例能更明顯易懂，所附圖式之詳細說明如下：The above and other objects, features, advantages and embodiments of the present invention will become more apparent and understood.
第1圖係繪示現有技術中的液晶顯示面板用於修補資料線的修補電路的原理示意圖；1 is a schematic diagram showing the principle of a repair circuit for repairing a data line of a liquid crystal display panel in the prior art;
第2圖係繪示依據本發明的一個方面，具有資料線修補線和掃描線修補線的液晶顯示面板的結構示意圖；2 is a schematic structural view of a liquid crystal display panel having a data line repair line and a scan line repair line according to an aspect of the present invention;
第3圖係繪示第2圖的切換裝置中第一導電層、第二導電層以及熔接導電層之間位置關係的示意圖；3 is a schematic view showing a positional relationship between a first conductive layer, a second conductive layer, and a welded conductive layer in the switching device of FIG. 2;
第4圖係繪示第2圖中的液晶顯示面板上的修補電路用於修補資料線的迴路走向示意圖；以及FIG. 4 is a schematic diagram showing the loop path of the repair circuit on the liquid crystal display panel in FIG. 2 for repairing the data line;
第5圖係繪示第2圖中的液晶顯示面板上的修補電路用於修補掃描線的迴路走向示意圖。FIG. 5 is a schematic diagram showing the circuit of the repair circuit on the liquid crystal display panel in FIG. 2 for repairing the scan line.
200．．．環繞線200. . . Surround line
202．．．資料線202. . . Data line
204．．．掃描線204. . . Scanning line
206．．．資料線修補線206. . . Data line repair line
208．．．連接線208. . . Cable
210．．．運算放大器210. . . Operational Amplifier
212．．．切換元件212. . . Switching element
214．．．掃描線修補線214. . . Scanning line repair line
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| TWI498627B (en) * | 2013-09-27 | 2015-09-01 | Au Optronics Corp | Display, repair method of displays and manufacture method of displays |
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|---|---|---|---|---|
| US6111558A (en) * | 1997-05-30 | 2000-08-29 | Samsung Electronics Co., Ltd. | Liquid crystal displays including closed loop repair lines and methods of repairing same |
| TW200627030A (en) * | 2004-12-10 | 2006-08-01 | Samsung Electronics Co Ltd | Array substrate, display apparatus having the same and method of repairing the same |
| TW200706986A (en) * | 2005-08-11 | 2007-02-16 | Au Optronics Corp | Display apparatus |
| TWI282457B (en) * | 2000-04-06 | 2007-06-11 | Chi Mei Optoelectronics Corp | Liquid crystal display component with defect restore ability and restoring method of defect |
| TW200912867A (en) * | 2007-09-05 | 2009-03-16 | Au Optronics Corp | Liquid crystal display, driving circuit, and connection repairing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6111558A (en) * | 1997-05-30 | 2000-08-29 | Samsung Electronics Co., Ltd. | Liquid crystal displays including closed loop repair lines and methods of repairing same |
| TWI282457B (en) * | 2000-04-06 | 2007-06-11 | Chi Mei Optoelectronics Corp | Liquid crystal display component with defect restore ability and restoring method of defect |
| TW200627030A (en) * | 2004-12-10 | 2006-08-01 | Samsung Electronics Co Ltd | Array substrate, display apparatus having the same and method of repairing the same |
| TW200706986A (en) * | 2005-08-11 | 2007-02-16 | Au Optronics Corp | Display apparatus |
| TW200912867A (en) * | 2007-09-05 | 2009-03-16 | Au Optronics Corp | Liquid crystal display, driving circuit, and connection repairing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI498627B (en) * | 2013-09-27 | 2015-09-01 | Au Optronics Corp | Display, repair method of displays and manufacture method of displays |
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