TW200532306A - A liquid crystal display with electro-static discharge protection - Google Patents
A liquid crystal display with electro-static discharge protection Download PDFInfo
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- TW200532306A TW200532306A TW93107172A TW93107172A TW200532306A TW 200532306 A TW200532306 A TW 200532306A TW 93107172 A TW93107172 A TW 93107172A TW 93107172 A TW93107172 A TW 93107172A TW 200532306 A TW200532306 A TW 200532306A
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- circuit ring
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Abstract
Description
200532306 五、發明說明（1) "- 【發明所屬之技術領域】 本發明是有關於一種液晶顯示面板，且特別是一種具有靜 電放電防護功能之液晶顯示面板。 【先前技術】 在薄膜電晶體（Thin-Film Transistor ; TFT)驅動之液晶 顯不面板製作過程中，常會有靜電累積的現象產生，且由 於液晶顯示面板之需求，選用絕緣性質的玻璃基板，導致 在製作過程中產生的靜電累積量無法消除，因而容易引起 靜電放電（Electro-Static Discharge ;ESD)的問題，造 成元件受損，並大幅降低了液晶顯示器元件之良率。 由於薄膜電晶體製作過程中，一些製程環境會產生靜電的 累積，如：化學氣相沉積（Chemical Vap〇r phase200532306 V. Description of the invention (1) "-[Technical field to which the invention belongs] The present invention relates to a liquid crystal display panel, and more particularly to a liquid crystal display panel with an electrostatic discharge protection function. [Previous technology] During the manufacture of thin-film transistor (TFT) driven liquid crystal display panels, static electricity accumulation often occurs, and due to the needs of liquid crystal display panels, the use of insulating glass substrates has led to The accumulated static electricity generated during the manufacturing process cannot be eliminated, so it is easy to cause the problem of Electro-Static Discharge (ESD), causing damage to the device, and greatly reducing the yield of the liquid crystal display device. Because of the thin film transistor manufacturing process, some process environments can generate static electricity accumulation, such as: chemical vapor deposition (Chemical Vapor phase)
Deposition ; CVD)、濺鍍（sputtering)或乾式蝕刻等電鑛 相關製程。另外，還有一些於製程轉換或基板傳輸的過輕 中、，亦會有來自於外界的靜電產生。由於絕緣之玻璃基柄 無法自行將靜電累積消除，因此，在元件與面板上之導瘤 部分將形成-明顯的電位差異，一旦發生靜電放電，瞬間 產生的兩電壓或高電流則會造成元件及電路的可靠度 (reliability)降低，甚至是元件及電路的永久性損^褒。 并：”：護或是靜電破壞問題之改善都是保護元件 ;以減j : ί的重要課題。一般而言，可針對靜電來源 : 達到降低靜電產生的機率，例如採用 -些除靜電的設備，或是於製程條件及機台狀態上進行改Deposition; CVD), sputtering or dry etching. In addition, some are too light during process conversion or substrate transfer, and static electricity from the outside may also be generated. Since the insulated glass-based handle cannot eliminate static electricity accumulation by itself, a significant potential difference will form between the nodule part on the component and the panel. Once electrostatic discharge occurs, the instantaneous two voltages or high current will cause the component and The reliability of the circuit is reduced, even the permanent damage of the components and the circuit. And: ": The improvement of protection or electrostatic destruction problems are protective components; in order to reduce the important issue of j: ί. Generally speaking, you can target the source of static electricity: to reduce the probability of static electricity generation, such as using some equipment to remove static electricity , Or make changes in process conditions and machine status
200532306 五、發明說明（2) 善。但此種方法，僅能藉由對靜電來源的控制來減少靜電 之產生，仍無法完全避免靜電累積的問題，而無法完全解 決靜電放電的問題。因此，在面板之電路設計上，時常設 置一些具靜電放電防護功能之電路設計，以達到元件防護 的目的。 目前主要應用在液晶平面顯示面板上的防護靜電放電之電 路設計，係為在面板上主動顯示區以外的周邊區域，設置 一環狀短路式（short-ring)的防護電路環，用以導通分散 累積於面板上顯示區内的靜電量，防止靜電的局部累積而 避免靜電放電的產生。其中，雖然防護電路環的電阻值若 越小’則分散累積靜電之能力則越高，但卻容易造成訊號 干擾的問題。因此，現有的面板周邊防護電路環設計，對 7 1員示區内的靜電累積量之分散成效仍有限。若能針對液 曰曰曰顯7F面板設計一靜電放電防護成效更佳的防護電路環結 構’將相當有利於液晶顯示面板之製造。 【發明内容】 明之目的之一是在提供一種具靜電放電防護功能之液 ^肩示面板’並且同時擁有斷線缺陷修補之能力，使液晶 放5 ^ 3 t之靜電累積可有效地被導通分散’而降低靜電 路有崎签二，另外，更能將靜電放電防護的設計與修補線 質的影響T ，以減少線路佈局對顯示區域之顯示範圍與品 根據本發明之卜 上速目的’ k出一種具靜電放電防護功能之200532306 V. Description of invention (2) Good. However, this method can only reduce the generation of static electricity by controlling the source of static electricity. It still cannot completely avoid the problem of static electricity accumulation and cannot completely solve the problem of electrostatic discharge. Therefore, in the circuit design of the panel, always have some circuit design with electrostatic discharge protection function to achieve the purpose of component protection. At present, the circuit design for electrostatic discharge protection mainly used on liquid crystal flat display panels is to set a short-ring protective circuit ring in the peripheral area outside the active display area on the panel to conduct dispersion. The amount of static electricity accumulated in the display area on the panel prevents the local accumulation of static electricity and the generation of electrostatic discharge. Among them, although the smaller the resistance value of the protective circuit ring is, the higher the ability to disperse and accumulate static electricity is, but it is easy to cause the problem of signal interference. Therefore, the existing design of the protective circuit ring around the panel has limited effectiveness in dispersing the accumulated static electricity in the 71-member display area. If a 7F panel can be designed with a protective circuit ring structure with better electrostatic discharge protection effect, it will be quite beneficial to the manufacture of liquid crystal display panels. [Summary of the Invention] One of the purposes of the invention is to provide a liquid ^ shoulder display panel with electrostatic discharge protection function and also has the ability to repair disconnection defects, so that the static electricity accumulation of 5 ^ 3 t can be effectively dispersed by conduction. 'While reducing the static circuit has the second sign, in addition, the electrostatic discharge protection design and repair line quality influence T can be reduced to reduce the layout of the display area of the display area and the quality of the circuit layout. A kind of electrostatic discharge protection function
200532306 發明說明（3) ΐ 7 f: t板。本發明利用在面板上顯示區域之週邊設置 導通分散咬果〇防羞電路裱，以達到良好的累積靜電之 係設計為i舆顯；示區域的内部防護電路環’ 板外緣的外部;構直；相連’：是利用較靠近面 面板經由磨邊導角製程，將外部防護電路 ^； :防護電路環即與顯示區域失去電性連通性，而❿二 修補線路，用以進行顯示區轉^成為 發明-較佳實施例，係為在-液晶顯示：板上，靠 壤繞於顯示區域之週邊。其巾，短路式㈣電至 >、一内部防護電路環，以及至少一外部防護已二 防護電路環係位於較靠近顯示區域的外路衣。内一 護電路環分別盥面板上的資粗 、、 ’且内部防 ^刀別面板上的貝枓線路以及掃描線路 ，但白位於不同平面，而不與顯示區域社 ^另:卜，外部防護電路環係位於内部防護電路= 圍’較#近面板外緣的位置，且外部防護产 顯示區域以及内部防護電路環電性相通：係同時與 狀態，以使面板製造過程中產生於顯—紐路連通 積，可經由外部防護電路環的電性連二二的靜電累 分散至外部防護電路環與内部防護電路環之上而同時導通 外部防護電路環可在顯示面板完成後，1 = t二 而被切除，而解除顯示區域内之短路連 能邊導角製程 外部防護電路環被移除之後，内部防護改二。並且，當 电路裱即失去與顯 第9頁 200532306 五、發明說明（4) 示區域内的電連通性，進而 〜' ;程，對顯示區域内的線路斷線缺：：線路’可配合雷射 其中，外部防護電路環可藉由與資行修補。 通，而與顯示區域具電性連通特性、、路或掃描線路相連 包含複數個保護元件，位於内部防外，顯示面板上更 路環之間，用以防止訊號干擾。‘;楚電路環與外部防護電 電路環與顯示區域之連通路轳上^ 70件设計於外部防護 環以及顯示區域電性相連通：於：：：：外部防護電路 連同外部防護電路環_起被移除於面板磨邊導角製程中， 由於，應用本發明之具靜 ;由複數條短路式防護電路環板，可 果。另外，介π ί 板具有更佳的靜電放電防護埒 ^.. 亦藉由内部防護電路環的結構設計，傕内政 修補線路之功用…後分別具有靜電放電防護與 :U發明之液晶顯示面板，不僅具有良好的靜電放番 «功犯，以有效降低靜電放電對元件損害之 電 2靜電分散路徑與修補線路結合為同一條線路〔在二能 斷線缺陷之目的。 力外達到修補 t藉由本發明之液晶顯示面板設計，不僅有效 電之危害，更同時增加缺陷修補之功效，而大幅=電故 示元件之產品良率與可靠度。 W升了顯 iHn 第10頁 200532306200532306 Description of the invention (3) ΐ 7 f: t plate. The present invention utilizes the arrangement of conducting and dispersing bites on the periphery of the display area on the panel. The anti-shy circuit is framed to achieve a good accumulated static electricity. The design is i; the internal protection circuit ring of the display area is outside the outer edge of the board; Straight; connected ': The outer protective circuit is made by the edge-faced lead angle process that is closer to the surface panel ^: the protective circuit ring loses electrical connectivity with the display area, and the second repair line is used for display area transfer ^ Become an invention-preferred embodiment, which is on-LCD display: panel, around the periphery of the display area. The towel, short-circuit type electric shock to >, an internal protective circuit ring, and at least one external protective two protective circuit ring are outer garments located closer to the display area. The inner protective circuit ring is respectively thick and thin on the bathroom panel, and the internal anti-knife circuit and scanning circuit on the panel, but the white is located on a different plane than the display area. ^ Other: Bu, external protection The circuit ring system is located at the position of the internal protection circuit = 围 '比 # near the outer edge of the panel, and the display area of the external protection product and the internal protection circuit ring are electrically connected: at the same time with the state, so that the display in the process of panel manufacturing The circuit connection product can be distributed to the external protective circuit ring and the internal protective circuit ring through the electrical protection of the external protective circuit ring, and the external protective circuit ring can be turned on at the same time. After the display panel is completed, 1 = t two After being cut off, the external protection circuit ring of the short-circuit-connected edge-lead-angle process in the display area was removed, and the internal protection was changed to two. And, when the circuit is mounted, it loses connection with the display. Page 9 200532306 V. Description of the invention (4) The electrical connectivity in the display area, and then ~ '; process, the line disconnection in the display area is missing: The line can cooperate with the Shooting it, the external protective circuit ring can be repaired with the bank. It is electrically connected to the display area, connected to the circuit, or to the scanning line. It contains a number of protection elements, which are located outside the interior and between the loops on the display panel to prevent signal interference. '; Chu circuit ring and the external protective electric circuit ring and the display area on the connection path ^ 70 pieces are designed to be electrically connected to the external protective ring and the display area: in ::::: external protective circuit with external protective circuit ring_ It was removed in the process of panel edging and lead angle. Because of the application of the invention, it is possible to use a plurality of short-circuit protection circuit ring boards. In addition, the π π board has better electrostatic discharge protection. ^ .. Also by the structure design of the internal protective circuit ring, the function of the internal repair circuit ... After that, it has electrostatic discharge protection and: U-invented liquid crystal display panel, Not only has a good electrostatic discharge «power crime, in order to effectively reduce the damage caused by electrostatic discharge to the electricity 2 The static dispersal path and the repair line are combined into the same line [for the purpose of the second line disconnection defect. Reaching repairs by force t By the design of the liquid crystal display panel of the present invention, not only the damage caused by electricity is effectively increased, but also the effectiveness of defect repair is increased, and the product yield and reliability of electricity display components are greatly increased. W raised iHn Page 10 200532306
【實施方式】 本發明係提供一種具靜電放電（Electr〇—Static Discharge ;ESD)防護功能之液晶顯示面板，利用在顯示 區外緣位置，設置多條電性相連接的環狀短路式 (short-ring)防護電路環，用以提高累積靜電的分散效 果，其中，部份防護電路環設計為與顯示區域相連通，而 另一=份之防護電路環則不與顯示區域結構相連。另外， 電路ϊ衣上並δ又置有可防止訊號互相干擾的保護元件 (guard)，以降低電路環對顯示區内的線路訊號干擾情 形。最後，利用顯示面板製作後段之磨邊製程，即可將連 通於顯示區域之防護電路環以及保護元件切除，使防護電 路環與顯示區内的短路現象消失，而面板上剩下的防護 路環則轉變成為修補線路（repair line)，配合上雷射製 程’用以修補顯示區内的線路斷線缺陷。 以下將以實施例對本發明之方法加以詳細說明。 實施例1 本發明揭露了一種具靜電放電防護效果的液晶顯示面板電 路結構設計。分別參照第1圖、第2圖與第3圖，第i圖係為 依照本發明第一較佳實施例的液晶顯示面板之陣列結構1 視示意圖，第2圖係為磨邊處理後的液晶顯示面板之'°陣列 結構上視示意圖，而第3圖係為第1圖之第一較佳實施例的 防護電路環部份結構放大示意圖，亦即為第1圖中 區域130内之放大示意圖。 ^[Embodiment] The present invention provides a liquid crystal display panel with an Electrostatic Discharge (ESD) protection function. A plurality of electrically connected ring-shaped short circuits (short -ring) a protective circuit ring to improve the dispersion effect of accumulated static electricity. Among them, some protective circuit rings are designed to communicate with the display area, and another protective circuit ring is not connected to the structure of the display area. In addition, δ is provided on the circuit jacket to prevent signals from interfering with each other, so as to reduce the interference of the circuit ring on the line signal in the display area. Finally, using the edging process of the rear section of the display panel, the protective circuit ring and the protective component connected to the display area can be cut off, so that the short circuit phenomenon between the protective circuit ring and the display area disappears, and the remaining protective road ring on the panel Then it is transformed into a repair line, which is used in conjunction with the laser process to repair the line disconnection defect in the display area. The method of the present invention will be described in detail in the following examples. Embodiment 1 The present invention discloses a circuit structure design of a liquid crystal display panel with electrostatic discharge protection effect. Referring to FIG. 1, FIG. 2 and FIG. 3 respectively, FIG. I is a schematic view of the array structure 1 of the liquid crystal display panel according to the first preferred embodiment of the present invention, and FIG. The top view of the '° array structure of the display panel, and FIG. 3 is an enlarged schematic view of a part of the structure of the protective circuit ring of the first preferred embodiment of FIG. 1, which is an enlarged schematic view of the area 130 in FIG. 1. . ^
200532306 五、發明說明（6) 參照第1圖，在一液晶顯示面板丨〇〇上，區域11〇係為具有 晝素陣列的顯示區，而資料線路丨〇 2與掃描線路丨04則交叉 控制顯示區域110内的各薄膜電晶體（Thiri Film Transistor ; TFT) 101的開關行為，以控制顯示區域11〇内 的晝素顯示狀態。本發明於顯示區域丨丨〇外的周邊區，設 置兩條裱狀紐路式的防護電路環，分別為較靠近顯示區域 11 0周邊的一内部防護電路環丨〇6，以及較靠近面板外緣的 一外部防護電路環1 〇 8。 内部防護電路環1 06係設計為不與顯示區域丨丨〇内部結構直 接相連結，但與外部防護電路環1〇8相連接。且内部防護 電路裱106分別與資料線路1〇2，以及掃描線路1〇4交叉排 列，彼此位於不同平面，而不相接觸。外部防護電路環 則没計為連結資料線路102或是掃描線路1〇4，而與顯 示區域110内部相連通，使顯示區域11〇内部形成一短路連 通狀態。 $外在内部防遵電路環1 〇 6與外部防護電路環1 〇 8之間， 白叹置有連接在母一資料線路丨〇 2或是連接每一掃描線路 ^之_上的保護元件丨〇 9，用以避免線路之間的訊號千擾， 保濩元件1 〇 9係设計為薄膜電晶體開關元件所組成，例如 可由兩個薄膜電晶體構成一保護元件，且保護元 9並 與外部防護電路環1 〇 8相連接。 2中’存在於顯示區域11〇内部的靜電累積量，即可藉由 二料線路102以及掃描線路1〇4，經過保護元件1〇9而分散 傳运至外部防護電路環1〇8上。並且，再利用外部防護電200532306 V. Description of the invention (6) Referring to the first figure, on a liquid crystal display panel 丨 〇, the area 11 is a display area with daylight array, and the data line 〇〇2 and the scanning line 丨 04 are cross-controlled The switching behavior of each thin film transistor (Thiri Film Transistor; TFT) 101 in the display area 110 is to control the daylight display state in the display area 110. In the present invention, two frame-like protection circuit rings are arranged in the peripheral area outside the display area, which are respectively an internal protection circuit ring near the periphery of the display area 110, and closer to the outside of the panel. Edge of an external protective circuit ring 108. The internal protective circuit ring 106 is designed not to be directly connected to the internal structure of the display area, but to be connected to the external protective circuit ring 108. In addition, the internal protection circuit mounting 106 is arranged crosswise with the data line 102 and the scanning line 104, and they are located on different planes without contacting each other. The external protective circuit ring is not counted as connecting to the data line 102 or the scanning line 104, but communicates with the inside of the display area 110, so that a short-circuit connection state is formed inside the display area 110. Between the external anti-compliance circuit ring 1 06 and the external protective circuit ring 1 08, Bai Lai sets a protection element connected to the female-data line 丨 〇2 or connected to each scanning line ^ 〇9, in order to avoid signal interference between lines, the protection element 10 is designed as a thin film transistor switching element. For example, two thin film transistors can be used to form a protection element, and the protection element 9 and the The external protective circuit ring 1 08 is connected. The amount of static electricity accumulated in 2 ′ within the display area 110 can be dispersed and transported to the external protection circuit ring 108 through the second material line 102 and the scanning line 104 through the protection element 109. Also, reuse external protective power
200532306 五、發明說明（7) 路環108與内部防護電路環1〇6之電性相連通設計，而使顯 不區域11 0内部的靜電累積量亦能同時再另外分散傳送至 内部防護電路環1 〇 6之上。 ^面=製作完成時，面板周邊需進行一磨邊導角製程，則 較為罪近顯示面板1〇〇外緣的外部防護電路環1〇8，以及保 護元件109即可經由磨邊導角製程，予以切除，而解除原 本顯示區域110内的短路連通狀態。此時，面板上僅剩下 内4防屢電路環1〇6存在於顯示區域之周邊。 ，舨第2圖，係為經由磨邊導角製程切除後的液晶顯示面 板之陣列結構上視示意圖。其中，内部防護電路環1〇6， f為外部防護電路環1 〇 8的移除，而失去與顯示區域丨丨〇内 邛=性相連通的特性。此時的内部防護電路環丨〇 6不再具 $分散靜電累積的能力，而轉換成為一修補線路。 ^顯示區域11 〇内出現斷線缺陷，則可利用内部防護電路 環1 0 6進行修補。如第2圖中所示，若一資料線路2 〇 2上， 於位置20 1出現斷線（open)缺陷時，則將内部防護電路環 \06灰與資料線路2〇2於位置203以及位置2〇5，以雷射製程進 行修補’使原本不相連的内部防護電路環1 〇 6與資料線路 巧2，於位置2〇3與位置2〇5相連結，而形成導通狀態。接 者’再將内部防護電路環106於位置2〇7及位置2〇9，以 射進行切斷。 於疋’原本傳送至資料線路2〇2上的訊號22〇，仍可藉由内 部防護電路環106與資料線路2〇2的短路連通路徑，由資料 線路2 0 2上產生斷線位置2 〇1的一端傳送至斷線位置2 〇 1的、200532306 V. Description of the invention (7) The design of the electrical connection between the circuit ring 108 and the internal protective circuit ring 106 allows the static electricity accumulation in the display area 110 to be simultaneously dispersed and transmitted to the internal protective circuit ring. 1 〇6 above. ^ Face = When the production is completed, a edging process is required at the periphery of the panel. The external protective circuit ring 108 and the protection element 109 which are relatively close to the outer edge of the display panel 100 can be passed through the edging process. , Cut off, and release the short-circuit communication state in the original display area 110. At this time, only the inner 4 anti-repeating circuit ring 106 is left on the periphery of the display area. Fig. 2 is a schematic top view of an array structure of a liquid crystal display panel cut away by a edging process. Among them, the internal protective circuit ring 106, f is the removal of the external protective circuit ring 108, and loses the characteristic of being in communication with the display area 丨 丨. At this time, the internal protection circuit ring no longer has the ability to dissipate static electricity accumulation, but is converted into a repairing circuit. ^ A broken wire defect appears in the display area 11 〇, you can use the internal protection circuit ring 106 to repair. As shown in Figure 2, if an open defect occurs at position 20 1 on a data line 2 0 2, the internal protective circuit ring \ 06 gray and data line 2 0 2 are located at position 203 and position. In 2005, the laser process was used to repair the original protective circuit ring 10 and the data line Q2, which were originally not connected. They were connected to position 203 and position 205 to form a conductive state. Then, the internal protection circuit ring 106 is cut at positions 207 and 209 by radio. The signal 22〇 originally transmitted by Yu 'to the data line 202 can still be connected to the data line 202 by the short-circuit communication path between the internal protection circuit ring 106 and the data line 202, resulting in a disconnection position 2 on the data line 202. 1 end is transferred to the disconnection position 2
200532306 五、發明說明（8) U顯示區上出現斷線以外之其他區域的顯示狀 2内部防護電路環106形成的修補線路，而不受 斷線缺的影變另夕卜甚县 ^ ^ 撕绩姑π μ ^ 另外右疋於任知描線路2〇4上出現 題時，亦能同樣藉由内部防護電路環1〇6當 作G補線路’配合雷射進行斷線之修補。 關於ϋ月之防護電路環的實際結構，則可參照第3圖所 1 m 糸為第1圖中的虛線區域130之内部結構上視示 二二1外部防護電路環308可由多層金屬層構成，例 312以及Λ用顯示元件製作之閘極金屬311、源/汲極金屬 312以及旦素電極金屬314三層金屬共同組成三層金 位於不同平面，源/汲極金屬3 1 2位於閘極金屬3丨丨上方，曰 而畫素電極314則又位於源/汲極金屬之上方，三 此之間則以接觸窗320 (contact hole)互相連接。如此， $大幅增加外部防護電路環3〇8供給累積靜電所分散的路 徑，因而提高對累積之靜電導通分散的成效。 另外，保護元件3〇9(虛線所示）則由兩個薄膜電晶體所组 成i由於外部防護電路環308，係與面板内之掃描線路以 ?貝:!線路相連通，因此為了避免在進行面板電性檢測 日,，貝料訊號的傳送會受到外部防護電路環3 〇 8造成的訊 唬干擾，於是，更設置了兩個薄膜電晶體作為保護元 3 0 9。至於内部防護電路環3〇6，則為導電性佳的單層金屬 線路，例如可直接使用源/汲極金屬312予以圖形定^出。 保護元件309中的兩個薄膜電晶體係藉由閘極金屬3ιι而盥 顯不區域内部的資料線路或是掃描線路相連接。外部防護200532306 V. Description of the invention (8) U-shaped display areas other than broken lines appear in the shape of 2 internal repair circuit ring 106 repair line, without being affected by the lack of broken lines, other Xibu County ^ ^ Ji Gu π μ ^ In addition, when you have a problem on Renzhi's circuit 204, you can also use the internal protective circuit ring 106 as a G compensation circuit to repair the disconnection with laser. Regarding the actual structure of the protective circuit ring of the moon, you can refer to 1 m in Figure 3, where the internal structure of the dashed area 130 in Figure 1 shows that the external protective circuit ring 308 can be composed of multiple metal layers. Example 312 and gate metal 311, source / drain metal 312, and denier electrode metal 314 made of display elements together constitute three layers of gold on different planes, and source / drain metal 3 1 2 is on gate metal Above, the pixel electrode 314 is located above the source / drain metal, and the three are connected to each other by a contact hole 320 (contact hole). In this way, the external protective circuit ring 308 significantly increases the path provided by the accumulated static electricity, thereby improving the effectiveness of the accumulated static conduction dispersion. In addition, the protection element 309 (shown by a dashed line) is composed of two thin film transistors. Because of the external protective circuit ring 308, it is connected to the scanning circuit in the panel by a ::! Line, so in order to avoid On the panel electrical test day, the transmission of the shell material signal will be disturbed by the bluff caused by the external protective circuit ring 3 08. Therefore, two thin film transistors are set as the protection element 309. As for the internal protection circuit ring 306, it is a single-layer metal circuit with good conductivity. For example, the source / drain metal 312 can be directly used for pattern determination. The two thin-film transistor systems in the protection element 309 are connected by the gate metal 3m and the data lines or scanning lines inside the display area. External protection
第14頁 200532306_ 五、發明說明（9)_ ' " -- ，=%308則藉由保護元件3〇9中的薄膜電晶體之源/汲極 ，屬312 ’而與顯示區域内部電性相連通，另外，外部防 H路環3Q8又可以再藉由接觸f32()，而利用源/汲極金 屬’以與内部防護電路環3〇6相連接。因此，可形成外 部防護電路環308、保護元件3〇9、内部防 電性相連通的短路結構狀態。於是=6區内 ’、積的靜電里將可同時導通分散至外部防護電路環與 ^苦卩防護電路環306之上，而更有效地減少靜電放 情 形產生。 1月 當面板製作完成後，利用面板磨邊導角之製程處理，直 將外部防護電路環308與保護元件3〇9同時切除，解除盘 不區内的短路連結狀態，只保留與顯示區域失去電性^诵 性的内部防護電路環3〇6，以作為修補線路之用。 另外，除了上述之外部防護電路環與内部防護電路環兩 短路環狀式電路設計外，亦可於外部防護電路環外圍，卽 外部防護電路環與面板外緣之間，再設置一條或多條血 部=護電路環或是顯示區域電性相連的短路環狀式防護^ 路％，以更加提高對面板顯示區内的累積靜電分散成效。 由上述的第一實施例中的結構設計，由於增加了顯示區周 邊的防護電路環數目，使累積靜電分散導通的路徑増多: 因此，可更有效地分散面板製程中產生的靜電累積量， 大幅降低靜電放電的發生率與破壞。 另外，更藉由内部防護電路環與外部防護電路環的連結妹 構叹计，使知面板在磨邊導角製程進行時，即可直接因切 200532306Page 14 200532306_ V. Description of the invention (9) _ '"-, = 308 is the source / drain of the thin film transistor in the protection element 309, which belongs to 312' and is electrically connected to the display area. In addition, the external H-protection ring 3Q8 can be connected to the internal protective circuit ring 3 06 by using the source / drain metal 'by contacting f32 (). Therefore, it is possible to form a short-circuited structure state in which the external protective circuit ring 308, the protection element 309, and the internal electrical resistance are connected. Therefore, the static electricity accumulated in the region 6 can be conducted and dispersed to the external protective circuit ring and the protective circuit ring 306 at the same time, which can more effectively reduce the occurrence of electrostatic discharge. After the production of the panel is completed in January, the process of panel edge grinding and lead angle processing is used to directly cut off the external protective circuit ring 308 and the protective element 309 at the same time to release the short-circuit connection in the panel area, and only lose the display area. Electrically readable internal protective circuit ring 3006 is used to repair the circuit. In addition, in addition to the above-mentioned two short-circuit ring circuit designs of the external protective circuit ring and the internal protective circuit ring, one or more external protective circuit rings and the outer edge of the panel can also be provided. The blood part = the protection circuit ring or the short-circuit ring-shaped protection circuit that is electrically connected in the display area%, to further improve the effect of dispersing the accumulated static electricity in the display area of the panel. By the structural design in the first embodiment described above, since the number of protective circuit rings around the display area is increased, the path of accumulated static electricity dispersion and conduction is increased: Therefore, the amount of static electricity generated in the panel manufacturing process can be more effectively dispersed, Significantly reduce the incidence and damage of electrostatic discharge. In addition, the internal protective circuit ring and the external protective circuit ring are connected to form a sigh meter, so that when the panel is processed during the edge grinding and lead angle process, it can be directly cut. 200532306
除外部防護電路環，而同時解除 ^ 辟于、外部、内部防罐Φ %卢，t 顯示區域内元件的短路連通狀能，— σ電路辰與 元件。 心元成一完整的顯示面板 且面板經由磨邊處理後，與顯示區失去 防護電路環則轉變成為一修補線】=悲的内部 ”m/補缺陷…，更因而節二 了而在面板上再額外設置修補線路的空間，避二: 板佈局(iay〇ut)空間’而減少了實際可顯示的 實施例2 本發明揭露了另一種具靜電放電防護效果的液晶 電路=構設計。利用三條防護電路環設置於顯示區周邊， 而同時達到更佳的靜電分散效果與斷線修補作用。 :照工4圖’第4圖係為依照本發明第二較佳實施例 顯不面板之陣列結構上視示意圖，如同第—實施例的設 计，在一液晶顯示面板400上，區域41〇係為具有畫素陣 的顯示區，而資料線路402與掃描線路4〇4則交叉控制 區域4 1 0内的各畫素顯示狀態。本發明於顯示區域“ 〇外二 周邊區，設置三條環狀短路式的防護電路環，分別為較a 近顯示區域410周邊的一内部防護電路環4〇6，以及較 = 面板外緣的一外部防護電路環4〇8，同時，還有介於外 防護電路環4 0 8與内部防護電路環4 〇 6之間的另一條内 護電路環407。其中，外部防護電路環4〇8係同樣設計^ =In addition to the external protective circuit ring, at the same time, the external, internal, and anti-canisters can be removed at the same time Φ%, the short-circuit connectivity of the components in the display area, σ circuit and components. The heart element becomes a complete display panel and after the panel is processed by fraying, it loses the protective circuit ring with the display area and turns into a repair line] = sad interior "m / repairs the defect ... Extra space for repairing the circuit is provided, to avoid the second: the board layout (iayout space) and reduce the actual displayable embodiment 2. The present invention discloses another liquid crystal circuit with electrostatic discharge protection effect = structure design. The use of three protections The circuit ring is arranged around the display area, and at the same time, it achieves a better static dispersing effect and a broken wire repairing effect. Figure 4 according to the work. Figure 4 is an array structure of a display panel according to a second preferred embodiment of the present invention. As shown in the schematic diagram, as in the design of the first embodiment, on a liquid crystal display panel 400, the area 410 is a display area with a pixel array, and the data line 402 and the scanning line 400 cross the control area 4 1 0. The state of each pixel in the display area. In the present invention, three outer short-circuit protection circuit rings are provided in the outer area of the display area. The inner protection circuit is located near the display area 410. Ring 4 06, and an external protective circuit ring 4 0 = the outer edge of the panel. At the same time, there is another internal protective circuit between the external protective circuit ring 4 0 8 and the internal protective circuit ring 4 0 6 Ring 407. Among them, the external protection circuit ring 408 is also designed ^ =
200532306 五、發明說明（11) 路402或是掃描線路4〇4，而與顯示區細之内 H 通Λ但内部防護電路環406以及内部防護電路 ^卜，/ Λ °又 '為不與顯示區域4 1 〇之内部結構相連通。 則設置有i : : : ΐ環4°8與内部防護電路環407之間， 4 04之ί· 6Λ仅罐-母—身料線路4〇2或是連接每一掃描線路 伴1 兀件4〇 9，用以保護線路之間的訊號干擾， ΐΠη !設計為由兩個薄膜電晶體所構成。其中， 5ΛΓΛ 與外部防護電路環408，以及顯示區域 :!Γ V 描線路404造成傳輸訊號干擾。同 _與内部防護電路環4。6^ 11存在於顯不區域410内部的靜電累積量，即可夢由 ==。2以及掃描線路404，而同時分散傳二藉由 、内部防護電路環4G6以及另—内部防護電路$ 最後，當面板製作完成時，則如同篦一 处狀；兀9切❺’而解除與顯示區域410内部的短路马 Γπ Λ 冑防護電路環40 6以及内部防護電路環 4〇7亦因而失去與顯示區域41〇之電性連通性。 衣 部防護電路環407 ’在辱 過磨邊導肖製程後’㈣變成為兩條修補線路，配=200532306 V. Description of the invention (11) The circuit 402 or the scanning circuit 400 is connected to the display area H, but the internal protective circuit ring 406 and the internal protective circuit ^ bu, / Λ ° is not displayed. The internal structure of the area 4 1 0 is connected. Then i::: between the ring 4 ° 8 and the internal protective circuit ring 407, 4 04 of the 6-only tank-female-body line 4 002 or each scan line companion 1 element 4 〇9, to protect the signal interference between the lines, ΐΠη! Is designed to be composed of two thin-film transistors. Among them, 5ΛΓΛ and the external protective circuit ring 408, and the display area:! Γ V trace the line 404, causing interference with the transmission signal. Same as _ with the internal protective circuit ring 4. 6 ^ 11 The amount of static electricity accumulated inside the display area 410, that is, the dream ==. 2 and scan line 404, and at the same time disperse transmission, internal protective circuit ring 4G6 and another—internal protective circuit. Finally, when the panel is completed, it looks like one place; The short circuit horse Γπ Λ 胄 inside the area 410 and the internal protection circuit ring 406 and the internal protection circuit ring 407 also lose their electrical connectivity with the display area 410. The protective circuit ring 407 of the clothing department ′ becomes two repairing lines after the shaving process is finished.
200532306 五、發明說明（12) 修補製程，如同第一實施例的方式，可對顯示區域4 1 〇内 部的斷線缺陷進行修補。 關於第二實施例之防護電路環的實際結構，則如同第一實 施例，其中外部防護電路環408可由多層金屬層構成，例 如可直接利用閘極金屬、源/汲極金屬以及畫素電極金屬 二層金屬共同組成，三層金屬層位於不同平面，而彼此之 間則利用接觸窗互相連接，以增加外部防護電路環對累積 之靜電導通分散的成效。另外，内部防護電路環40 6可利 用源/汲極金屬製作形成，而内部防護電路環407則利用晝 素電極金屬製作形成。 ~ 由於第一貫施例的設計，藉由防遵電路環的數量增加，使 累積靜電之分散路徑增加，而更有效地提高了累積靜電之 分散成效，達到更佳的靜電放電防護效果。另外，藉由兩 條内部防護電路環的設計，使磨邊製程後，可保留並轉換 為修補線路的電路環數量增加，因而亦將更加有助於對顯 不區域内之線路斷線缺陷進行修補，而提升缺陷修補的實 際成效。 少 ^上述^發明之實施例可知，應用本發明之方法可得一具 示^ Ϊ ^防護功能的液晶顯示面板’而大幅提昇顯 才：：: 良率與可靠度。且應用本發明之方法，可 佈局的設計，僅作邻ί件下，利用面板週邊線路 一同拉ι古& 1作#伤圖案定義的設計與變化，即可形成 Π寺”有良好靜電放雪 u 的防護電路環結構H = 補線路之功能 傅 不僅增加靜電放電防護電路環之數200532306 V. Description of the invention (12) The repairing process, as in the first embodiment, can repair the broken wire defect in the display area 4 10. The actual structure of the protective circuit ring of the second embodiment is the same as that of the first embodiment. The external protective circuit ring 408 may be composed of multiple metal layers. For example, the gate metal, source / drain metal, and pixel electrode metal may be directly used. The two layers of metal are composed together, and the three layers of metal are located on different planes, and they are connected to each other using contact windows to increase the effectiveness of the external protective circuit ring to disperse the accumulated electrostatic conduction. In addition, the inner protective circuit ring 406 can be formed using source / drain metal, and the inner protective circuit ring 407 is formed using day electrode metal. ~ Due to the design of the first embodiment, by increasing the number of compliance circuit loops, the dispersion path of accumulated static electricity is increased, the dispersion effect of accumulated static electricity is more effectively improved, and a better electrostatic discharge protection effect is achieved. In addition, with the design of two internal protective circuit loops, the number of circuit loops that can be retained and converted into repaired lines after the edging process is increased, which will also be more helpful to carry out line breakage defects in the display area. Repair, and improve the actual effectiveness of defect repair. It can be seen from the above embodiments of the invention that the method of the present invention can be used to obtain a liquid crystal display panel with a protection function ^ Ϊ ^, which significantly improves the display performance :: yield and reliability. And using the method of the present invention, the layout design can be made only by the adjacent pieces, and using the peripheral circuit of the panel to pull together and make 1 ## pattern definition design and change, you can form a Π temple with good electrostatic discharge. Snow u's protective circuit ring structure H = The function of the compensation circuit not only increases the number of electrostatic discharge protective circuit rings
第18頁 200532306 五、發明說明（13) 量，使靜電分散之成效提升，有效降低元件受損情形，更 可將靜電放電防護與修補線路結合，而在不影響顯示區域 内的佈局空間與顯示特性之條件下，同時達到顯示元件製 造良率與可靠度提升之成效。 雖然本發明已以實施例揭露如上，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和範圍 内，當可作各種之更動與修飾，因此本發明之保護範圍當 視後附之申請專利範圍所界定者為準。Page 18, 200532306 V. Description of the invention (13) The amount of static electricity is improved, the damage of components is effectively reduced, and electrostatic discharge protection and repair circuits can be combined without affecting the layout space and display in the display area. Under the conditions of characteristics, the production yield and reliability of display elements can be improved at the same time. Although the present invention has been disclosed as above by way of example, it is not intended to limit the present invention. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope shall be determined by the scope of the attached patent application.
第19頁 200532306Page 19 200532306
為讓本發明之上述特徵、方法、目的及優點能更明顯易 f，配合所附圖式，加以說明如下： 第1圖係為依照本發明第—較佳實施例的液晶顯示面板之 陣列結構上視示意圖； 第2圖係-為依照本發明第一較佳實施例，經磨邊處理後的 液晶顯/示面板之陣列結構上視示意圖； 第3圖係為依照本發明第一較佳實施例的防護電路環部份 結構放大示意圖；以及 第4圖係為依照本發明第二較佳實施例的液晶顯示面板之 陣列結構上視示意圖。In order to make the above-mentioned features, methods, objects, and advantages of the present invention more obvious and easy, with the accompanying drawings, the description is as follows: FIG. 1 is an array structure of a liquid crystal display panel according to a first preferred embodiment of the present invention. Top view; Figure 2 is a top view of an array structure of a liquid crystal display / display panel after edging according to the first preferred embodiment of the present invention; Figure 3 is a first preferred view according to the present invention An enlarged schematic view of a part of the structure of the protective circuit ring of the embodiment; and FIG. 4 is a schematic top view of an array structure of a liquid crystal display panel according to a second preferred embodiment of the present invention.
【元件代表符號簡單說明】 100、400 :顯示面板 101 :薄膜電晶體 102、202、402 :資料線路 104、204、404 :掃描線路 106、306、406、407 :内部防護電路環 108、 308、408 ·外部防護電路環 109、 30 9、409 :保護元件 110、410:區域 130:虛線區域[Simple description of component representative symbols] 100, 400: Display panel 101: Thin film transistor 102, 202, 402: Data line 104, 204, 404: Scan line 106, 306, 406, 407: Internal protective circuit ring 108, 308, 408 External protective circuit ring 109, 30 9, 409: Protective element 110, 410: Area 130: Dotted area
201 、 203 、 205 、 207 、 209 :位置201, 203, 205, 207, 209: Location
220 訊號 311 ： 閘極金屬 31 2 源/汲極金屬 314 ： 畫素電極 320 接觸窗口 第20頁220 signal 311: gate metal 31 2 source / drain metal 314: pixel electrode 320 contact window page 20
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| TW93107172A TWI259310B (en) | 2004-03-17 | 2004-03-17 | A liquid crystal display with electro-static discharge protection |
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| TW93107172A TWI259310B (en) | 2004-03-17 | 2004-03-17 | A liquid crystal display with electro-static discharge protection |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7773164B2 (en) | 2007-08-14 | 2010-08-10 | Chunghwa Picture Tubes, Ltd. | Active device array substrate |
| US8872991B2 (en) | 2011-05-02 | 2014-10-28 | E Ink Holdings Inc. | Display device and display array substrate |
| US9207509B2 (en) | 2013-08-30 | 2015-12-08 | Lg Display Co., Ltd. | Liquid crystal display device and method of fabricating the same |
| CN111856825A (en) * | 2020-07-28 | 2020-10-30 | 京东方科技集团股份有限公司 | Array substrate, preparation method thereof, display panel and display device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI400785B (en) * | 2007-07-12 | 2013-07-01 | Chunghwa Picture Tubes Ltd | Active devices array substrate |
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2004
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7773164B2 (en) | 2007-08-14 | 2010-08-10 | Chunghwa Picture Tubes, Ltd. | Active device array substrate |
| US8872991B2 (en) | 2011-05-02 | 2014-10-28 | E Ink Holdings Inc. | Display device and display array substrate |
| US9207509B2 (en) | 2013-08-30 | 2015-12-08 | Lg Display Co., Ltd. | Liquid crystal display device and method of fabricating the same |
| CN111856825A (en) * | 2020-07-28 | 2020-10-30 | 京东方科技集团股份有限公司 | Array substrate, preparation method thereof, display panel and display device |
| CN111856825B (en) * | 2020-07-28 | 2023-10-20 | 京东方科技集团股份有限公司 | Array substrate, preparation method thereof, display panel and display device |
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