1253531 修正日期93.3.25 06066twf 1 .doc/〇〇6 五、發明說明 本發明是有關於一種液晶顯示器（Liquid Crystal Display，LCD)的製作方法，且特別是有關於一種液晶顯示 器之液晶注入口的密封方法。 液晶顯示器具有高畫質、體積小、重量輕、低電壓驅 動、低消耗功率及應用範圍廣等優點，被廣泛應用於中、 小型可攜式電視、行動電話、攝錄放影機、筆記型電腦、 桌上型顯示器、以及投影電視等消費性電子或電腦產品， 並已逐漸取代陰極射線管(Cathode Ray Tube, CRT)成爲顯 示器的主流。一般液晶顯示器之主體爲液晶單元，主要是 由兩片透明基板以及被封於基板之間的液晶所構成。 目前液晶顯示器是以薄膜電晶體(Thin Film Transistor， TFT)液晶顯示器爲主，而一般薄膜電晶體液晶顯示器之製 作可大致區分爲三部份：薄膜電晶體陣列（TFT Array)製 程、液晶顯示單元組裝(LC Cell Assembly)製程、液晶顯示 模組(Liquid Crystal Module，LCM)製程。其中的液晶顯示 單元組裝製程，是將完成薄膜電晶體陣列製程的基板加以 組裝，然後於基板與其間隙所構成的液晶槽中注入液晶材 料，再將液晶槽之注入口密封，以完成液晶顯示單元之製 作。 請參照第1A圖至第1D圖，其所繪示的是習知一種液 晶槽注入口之密封方法的不意圖。如第1A圖所不，由分 別具有薄膜電晶體陣列與對應電極之基板100所組成的液 晶顯示面板(Panel)102，在構成顯示面板102之基板100 1253531 修正日期93.3.25 〇6〇66twfl .doc/006 的間隙注入液晶材料l〇4以後，必須把液晶注入口 l〇6封 閉’將液晶材料密封於液晶槽中。而封口所使用的紫外光 膠(即uv膠）i〇8是貯存於膠槽(Tank)(未顯示於圖中）內， 並利用氣體推送，使紫外光膠108經導管110由噴嘴 (Nozzle)112持續流出，用以將液晶槽的注入口 1〇6密封。 請參照第1B圖與第1C圖所示，在塗佈膠材進行封口 時，一般係採用搖動噴嘴（Swing Nozzle)的方式，亦即將 液晶顯示面板102固定，噴嘴IK則在一平面上呈8字形 運動，使得從噴嘴112流出的紫外光膠108可以均勻塗佈 於液晶注入口 106上將其密封。第1B與1C圖中之箭號爲 噴嘴112之運動方向，而第1B圖中之曲線則爲噴嘴112 之運動軌跡。然而，由於噴嘴112是做8字形的運動，所 以紫外光膠108會從液晶顯示面板102的兩側溢流出來， 而且必須使用其他機構才能讓噴嘴進行8字形運動。 因爲採用搖動噴嘴的方式塗膠進行封口時，會在液晶 注入口的側邊及附近產生溢膠現象，爲避免其影響後續其 他製作步驟，所以必須將多餘膠材去掉。請參照第1D圖’ 其所繪示的是移除液晶注入口周緣多餘膠材之刮膠製程的 示意圖。如第1D圖所示’紫外光膠1〇8由噴嘴以8字形 運動方式塗佈於面板102之液晶注入口 106上將其密封 後，由於注入口 106附近會有多餘的殘膠’所以必須使用 刀具114進行刮膠製程，利用刀具114上的兩個刀片116 將面板102兩側的多餘膠材l〇8a刮除，才能防止殘膠對 液晶顯示面板後續製程的影響。 1253531 〇6066twfl.d〇c/006 修正日期 93.3.25 然而，前述此種液晶注入口的密封方法’必須配合其 他額外的機構來搖動噴嘴使其呈8字形運動，導致密封液 晶注入D所使用的裝置結構複雜化。再者，以搖動噴嘴方 式塗佈膠材，會在液晶注入口附近產生溢膠現象，必須進 行刮膠步驟去除多餘的膠材，避免殘膠對後續製程、液晶 顯示面板的品質與性能產生不良影響。所以這種習知的封 口方法必須使用較複雜的機構並增加製程步驟，導致生產 效率降低、產品良率不佳、製作成本上升。 因此本發明提供一種液晶顯示器之液晶注入口的密封 方法，採非接觸方式以沾棒(Pin)塗膠密封液晶注入口，可 控制封口所需之膠量，防止溢膠現象產生，避免封口膠材 之浪費，且不需其他的搖動機構。再者，此種方法可防止 塗膠封口時使用過多膠材，避免殘膠影響後續製程，且不 需進行去除多餘膠材之刮膠步驟。應用本發明之密封方 法，可簡化液晶注入口之密封製程、增加生產效率、提昇 產品良率，並可節省封口所需膠材、降低生產成本。 根據本發明之上述及其他目的，提出一種液晶顯示器 之液晶注入口的密封方法，首先提供由分別具有薄膜電晶 體陣列及對應電極之基板所構成之液晶顯示面板，且液晶 顯示面板中具有由基板及其間隙所形成之液晶槽，而液晶 槽中則充滿液晶材料；然後使沾棒之一端浸入膠材容器 中’使其附著適量之膠材；接著將沾棒移往液晶顯示面板， 並使沾棒上的膠材與液晶注入口直接接觸，於液晶注入口 上形成密封膠材將其覆蓋，而沾棒並不與液晶注入口接 1253531 06066twfl .doc/006 修正日期 93.3.25 觸；再使密封膠材固化，完成液晶注入口之密封。 爲讓本發明之上述和其他目的、特徵、和優點能更明 顯易懂，下文特舉較佳實施例，並配合所附圖式，作詳細 說明如下= 圖式之簡單說明： 第1A圖至第1D圖所繪示爲習知一種液晶槽注入口 之密封方法的示意圖； 第2圖所繪示爲依照本發明之較佳實施例，一種液晶 顯示器之液晶注入口密封方法的流程圖；以及 第3A圖至第3D圖所繪示爲依照本發明之較佳實施 例，一種液晶顯示器之液晶注入口的密封方法，其製作流 程之示意圖。 圖式之標記說明： 100、300a、300b :液晶顯示器基板 102、3 02 :液晶顯示面板 104、306 :液晶材料 106、308 :液晶注入口 108 :紫外光膠 l〇8a :多餘膠材 110 :導管 112 :噴嘴 114 :刀具 116 :刀片 200〜206 :液晶注入口的密封步驟 1253531 06066twfl.doc/006 修正日期 93.3.25 304 :液晶槽 310 :沾棒 312 :膠材容器 314 :膠材 316 :密封膠材 實施例 請參照第2圖，其所繪示的是依照本發明之較佳實施 例，一種液晶顯示器之液晶注入口密封方法的流程圖。而 第3A圖至第3D圖，其所繪示的是依照本發明之較佳實 施例，一種液晶顯示器之液晶注入口的密封方法，其製作 流程之示意圖。 如第2圖中之步驟200所示，並同時參照第3A圖， 首先提供液晶顯示面板302，並將其加以固定。其中液晶 顯示面板302是由具有薄膜電晶體陣列之第一基板300a 以及具有對應電極的第二基板300b組合而成，第一基板 300a上的薄膜電晶體陣列是與第二基板300b上的電極相 對應。而液晶槽304是由第一基板300a與第二基板300b 的間隙所構成，液晶材料306則是經由液晶顯示面板302 的液晶注入口 3〇8注入並充滿液晶槽304。 其次，請參照第2圖中之步驟202與第3B圖，將沾 棒310之一端浸入盛有封口膠材314的膠材容器312中， 使封口所需適量之膠材314附著於沾棒310的一端。其中 膠材容器312包括膠槽或者可盛膠材之碟盤等，而膠材容 器312內所盛之封口膠材3 14,其材質可包括熱固化型膠(例 1253531 06066twfl .doc/006 修正日期 93.3.25 如AB膠）、紫外光固化型膠(例如UV膠)等，封口之膠材 314較佳的材料爲紫外光固化型膠。 接著，請參照第2圖中之步驟204與第3C圖，將沾 棒310移往液晶顯示面板302之液晶注入口 308，使位於 沾棒3 10上之一端的膠材3 14與液晶注入口 308直接接觸， 並隨即將沾棒310移開，藉由膠材314與液晶顯示面板302 之間的附著力，於液晶注入口 308上形成密封膠材316將 其完全覆蓋。當膠材314與液晶注入口 308接觸時，沾棒 310並不與液晶注入口 308接觸，此爲非接觸式製程(Non-Contact Process) ， 亦即沾棒 310 不與液晶顯示面板 302 接 觸，而密封膠材316之材質即膠材314之材質，其材質可 包括熱固化型膠(例如AB膠）、紫外光固化型膠(例如UV 膠)等，密封膠材316較佳的材料爲紫外光固化型膠。。 然後，請參照第2圖中之步驟206與第3D圖，以密 封膠材3 16將顯示面板302上的液晶注入口 308覆蓋之後， 再使密封膠材316固化，將液晶顯示器之液晶注入口完全 密封。若密封膠材316之材料爲紫外光固化型膠，則以紫 外光照射密封膠材3 I6使其固化；若密封膠材3 16之材料 爲熱固化型膠，則可以進行熱烤（Curing)使熱固化型膠固 化，或者是使其自然硬化。 因此’本發明所提出之液晶顯示器的液晶注入口密封 方法，係使用沾棒點膠的封口方法(Pin Transfer Method)， 爲一種非接觸式製程，僅封口之膠材與液晶注入口接觸。 而密封液晶注入口所需的膠量，以及附著於沾棒上之膠材 10 1253531 06066twf 1 .doc/006 修正日期 93.3.25 的量，可藉由使用形狀不同的沾棒、調整沾棒浸入膠材之 深度及/或封口時沾棒與液晶注入口之距離等加以控制。 因此，藉由膠材與液晶顯示面板之間的附著力，形成密封 膠材覆蓋液晶注入口將其密封，並且不會產生溢膠現象， 可避免封口膠材之浪費，且不需要進行額外的刮膠製程。 由上述本發明之較佳實施例可知，應用本發明不需搖 動噴嘴之機構，且不必進行殘膠之刮膠製程，能簡化液晶 注入口之密封製程步驟、提高生產效率、改善產品良率， 並可節省封口所需膠材之用量、降低製作成本。 雖然本發明已以較佳實施例揭露如上，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 和範圍內’當可作各種之更動與潤飾，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爲準。1253531 Revision date 93.3.25 06066twf 1 .doc/〇〇6 5. Description of the Invention The present invention relates to a method for fabricating a liquid crystal display (LCD), and more particularly to a liquid crystal injection port of a liquid crystal display. Sealing method. LCD display has the advantages of high image quality, small size, light weight, low voltage drive, low power consumption and wide application range. It is widely used in medium and small portable TVs, mobile phones, video recorders, and notebooks. Consumer electronics or computer products such as computers, desktop displays, and projection TVs have gradually replaced cathode ray tubes (CRTs) as the mainstream of displays. Generally, the main body of the liquid crystal display is a liquid crystal cell, which is mainly composed of two transparent substrates and a liquid crystal sealed between the substrates. At present, the liquid crystal display is mainly a thin film transistor (TFT) liquid crystal display, and the general thin film transistor liquid crystal display can be roughly divided into three parts: a thin film transistor array (TFT Array) process, a liquid crystal display unit. Assembly (LC Cell Assembly) process, liquid crystal display module (Liquid Crystal Module, LCM) process. The liquid crystal display unit assembly process is to assemble a substrate on which the thin film transistor array process is completed, and then inject a liquid crystal material into a liquid crystal cell formed by the substrate and the gap thereof, and then seal the injection port of the liquid crystal cell to complete the liquid crystal display unit. Production. Referring to Figs. 1A to 1D, there is shown a conventional method of sealing a liquid crystal cell inlet. As shown in FIG. 1A, a liquid crystal display panel 102 composed of a substrate 100 having a thin film transistor array and a corresponding electrode, respectively, has a modification date of 93.3.25 〇6〇66 twfl on the substrate 100 1253531 constituting the display panel 102. After the gap of doc/006 is injected into the liquid crystal material l〇4, the liquid crystal injection port l〇6 must be closed to seal the liquid crystal material in the liquid crystal cell. The ultraviolet glue (ie, uv glue) i〇8 used for the sealing is stored in a tank (not shown) and is pushed by a gas so that the ultraviolet glue 108 is passed through the nozzle 110 by the nozzle (Nozzle). The 112 is continuously discharged to seal the injection port 1〇6 of the liquid crystal cell. Referring to FIG. 1B and FIG. 1C, when the coating material is sealed, a swinging nozzle (Swing Nozzle) is generally used, that is, the liquid crystal display panel 102 is fixed, and the nozzle IK is 8 on a plane. The glyph movement causes the ultraviolet glue 108 flowing out of the nozzle 112 to be uniformly applied to the liquid crystal injection port 106 to seal it. The arrows in Figs. 1B and 1C are the moving directions of the nozzles 112, and the curves in Fig. 1B are the moving trajectories of the nozzles 112. However, since the nozzle 112 is in a figure-eight motion, the ultraviolet glue 108 overflows from both sides of the liquid crystal display panel 102, and other mechanisms must be used to allow the nozzle to perform a figure-eight motion. Since the glue is applied for sealing by means of a shaking nozzle, an overflow phenomenon occurs at the side and the vicinity of the liquid crystal inlet, and in order to avoid affecting other subsequent production steps, the excess glue must be removed. Please refer to FIG. 1D', which is a schematic view of a squeegee process for removing excess glue from the periphery of the liquid crystal injection port. As shown in Fig. 1D, the 'ultraviolet light gel 1 〇 8 is applied to the liquid crystal injection port 106 of the panel 102 by a nozzle in a figure-eight motion to seal it, and there is excess residual glue near the injection port 106. The squeegee process is performed using the cutter 114, and the excess glue l8a on both sides of the panel 102 is scraped off by the two blades 116 on the cutter 114 to prevent the residual glue from affecting the subsequent process of the liquid crystal display panel. 1253531 〇6066twfl.d〇c/006 Revision date 93.3.25 However, the above-mentioned method of sealing the liquid crystal injection port 'must with other additional mechanisms to shake the nozzle to make a figure-eight motion, resulting in the use of sealed liquid crystal injection D The structure of the device is complicated. Furthermore, applying the glue material by the shaking nozzle method may cause an overflow phenomenon near the liquid crystal injection port, and the squeegee step must be performed to remove the excess glue material, thereby preventing the residual glue from being bad for the subsequent process and the quality and performance of the liquid crystal display panel. influences. Therefore, such conventional sealing methods must use more complicated mechanisms and increase process steps, resulting in lower production efficiency, poor product yield, and increased production costs. Therefore, the present invention provides a method for sealing a liquid crystal injection port of a liquid crystal display. The non-contact method is used to seal the liquid crystal injection port with a glued stick (Pin), which can control the amount of glue required for sealing, prevent the occurrence of glue overflow, and avoid sealing glue. Material waste, and no other shaking mechanism is required. Moreover, this method can prevent excessive glue from being used when the glue is sealed, and the residual glue is prevented from affecting the subsequent process, and the step of removing the excess glue is not required. By applying the sealing method of the invention, the sealing process of the liquid crystal injection port can be simplified, the production efficiency can be increased, the product yield can be improved, and the rubber material required for sealing can be saved, and the production cost can be reduced. According to the above and other objects of the present invention, a method for sealing a liquid crystal injection port of a liquid crystal display is provided. First, a liquid crystal display panel comprising a substrate having a thin film transistor array and a corresponding electrode is provided, and the liquid crystal display panel has a substrate. a liquid crystal cell formed by the gap therebetween, and the liquid crystal cell is filled with the liquid crystal material; then one end of the stick is dipped into the glue container to make it adhere to an appropriate amount of the glue; then the stick is moved to the liquid crystal display panel, and The glue on the stick is in direct contact with the liquid crystal injection port, and a sealing glue is formed on the liquid crystal injection port to cover it, and the stick is not connected with the liquid crystal injection port 1253531 06066twfl.doc/006 correction date 93.3.25 touch; The sealing material is cured to complete the sealing of the liquid crystal injection port. The above and other objects, features and advantages of the present invention will become more <RTIgt; 1D is a schematic view showing a sealing method of a liquid crystal cell injection port; FIG. 2 is a flow chart showing a liquid crystal injection port sealing method of a liquid crystal display according to a preferred embodiment of the present invention; FIG. 3A to FIG. 3D are schematic diagrams showing a sealing process of a liquid crystal injection port of a liquid crystal display according to a preferred embodiment of the present invention. Description of the drawings: 100, 300a, 300b: liquid crystal display substrate 102, 302: liquid crystal display panel 104, 306: liquid crystal material 106, 308: liquid crystal injection port 108: ultraviolet light glue l 8a: excess glue material 110: Catheter 112: Nozzle 114: Tool 116: Blade 200 to 206: Sealing step of liquid crystal injection port 1253531 06066twfl.doc/006 Revision date 93.3.25 304: Liquid crystal tank 310: Dip rod 312: Plastic container 314: Separate material 316: Sealant Embodiment Referring to FIG. 2, a flow chart of a liquid crystal injection port sealing method for a liquid crystal display according to a preferred embodiment of the present invention is shown. 3A to 3D are schematic views showing a manufacturing process of a liquid crystal injection port of a liquid crystal display according to a preferred embodiment of the present invention. As shown in step 200 in Fig. 2, and referring to Fig. 3A at the same time, the liquid crystal display panel 302 is first provided and fixed. The liquid crystal display panel 302 is composed of a first substrate 300a having a thin film transistor array and a second substrate 300b having a corresponding electrode. The thin film transistor array on the first substrate 300a is opposite to the electrode on the second substrate 300b. correspond. The liquid crystal cell 304 is formed by a gap between the first substrate 300a and the second substrate 300b, and the liquid crystal material 306 is injected through the liquid crystal injection port 3?8 of the liquid crystal display panel 302 and filled with the liquid crystal cell 304. Next, referring to step 202 and FIG. 3B in FIG. 2, one end of the stick 310 is immersed in the glue container 312 containing the sealing glue 314, so that an appropriate amount of the glue 314 required for the sealing is attached to the stick 310. One end. The rubber material container 312 includes a glue tank or a disc which can hold the rubber material, and the sealing material 314 contained in the plastic material container 312 can be made of a heat curing type glue (for example, 1253531 06066twfl.doc/006) Date 93.3.25, such as AB glue), UV-curable adhesive (such as UV glue), etc., the preferred material of the sealed adhesive 314 is UV-curable adhesive. Next, referring to step 204 and FIG. 3C in FIG. 2, the dipstick 310 is moved to the liquid crystal injection port 308 of the liquid crystal display panel 302, so that the glue 3 14 at one end of the dipstick 3 10 and the liquid crystal injection port are opened. The 308 is in direct contact, and then the dipstick 310 is removed. By the adhesion between the adhesive 314 and the liquid crystal display panel 302, a sealant 316 is formed on the liquid crystal injection port 308 to completely cover it. When the glue 314 is in contact with the liquid crystal injection port 308, the dipstick 310 is not in contact with the liquid crystal injection port 308. This is a non-contact process, that is, the dipstick 310 is not in contact with the liquid crystal display panel 302. The material of the sealing material 316 is the material of the rubber material 314, and the material thereof may include a heat curing type rubber (for example, AB glue), an ultraviolet curing type glue (for example, UV glue), etc., and the sealing material 316 is preferably made of ultraviolet material. Light curing adhesive. . Then, referring to steps 206 and 3D in FIG. 2, after sealing the liquid crystal injection port 308 on the display panel 302 with the sealing material 3 16 , the sealing material 316 is cured, and the liquid crystal injection port of the liquid crystal display is used. Completely sealed. If the material of the sealant 316 is a UV-curable adhesive, the sealant 3 I6 is irradiated with ultraviolet light to cure it; if the sealant 3 16 is a heat-curable adhesive, hot baking can be performed. The thermosetting glue is cured or it is naturally hardened. Therefore, the liquid crystal injection port sealing method of the liquid crystal display proposed by the present invention is a pin transfer method using a pin transfer method (Pin Transfer Method), which is a non-contact type process in which only the sealed glue is in contact with the liquid crystal injection port. The amount of glue required to seal the liquid crystal injection port, and the amount of glue attached to the stick 10 1053531 06066twf 1 .doc/006 correction date 93.3.25 can be immersed by using a different shape of the stick The depth of the glue and/or the distance between the stick and the liquid crystal injection port during sealing are controlled. Therefore, by the adhesion between the glue material and the liquid crystal display panel, the sealing glue is formed to cover the liquid crystal injection port to seal it, and the glue leakage phenomenon is not generated, the waste of the sealing glue material can be avoided, and no additional need is required. Squeegee process. According to the preferred embodiment of the present invention, the invention does not require a mechanism for shaking the nozzle, and does not need to perform a squeegee process of the residual glue, which can simplify the sealing process of the liquid crystal injection port, improve production efficiency, and improve product yield. It can save the amount of glue required for sealing and reduce the production cost. While the invention has been described above by way of a preferred embodiment, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.