200932376 九、發明說明： 【相關申請案之交互參照】 本申請案主張2008年1月28曰申請之韓國專利申請案 10-2008-0008667號，其揭露整體結合於此作為參考。 【發明所屬之技術領域】 本發明係關於塗佈液晶於基板上以形成液晶顯示器之液 晶層之裝置。 【先前技術】 相較於陰極射線管(CRT)，液晶顯示器(LCD)具有更先進 的可視性以及更低的功率消耗，並產生較少的熱。因此，液晶 顯示器與電漿顯示面板(PDP)以及場發射顯示器(FED)，已逐漸 成為行動電話、電腦監視器、以及電視之下一世代顯示器。 般而s ’薄膜電晶體(TFT)液晶顯示面板包含TFJ1陣列 基板以及彩色濾光陣列基板。這兩個基板彼此間隔約4至5以 m，而液晶層插置其間。此外，在顯示區周圍部分，這兩個基 板藉由密封劑接合在一起，而避免水氣或雜質進到液晶層中。 數個形成形成液晶層的方法之-為液晶塗佈方法。於液晶 塗佈方法中’藉由塗佈液晶到密封劑所界定之基板的特定區域 中來形成液晶層，連接兩個基板，並且硬化密封劑以接合基 板。利用液晶塗佈方法形成液晶層，使用了液晶塗佈裝置\土 6 200932376 液晶塗佈裝置娜基板飾喷嘴，以料噴嘴滴落液晶到 基板上。自含有液晶的注射器提供液晶到嘴嘴。於此案例中， 液晶塗佈裝置形成具有預定量液晶之液晶層。 於某些案例中’當液晶塗佈裝置滴落液晶時，提供到喷嘴 的液晶可能含魏泡’而造成關，滴可導致塗佈液晶的缺 陷，在完成塗佈液晶後，會使得實際塗佈的總液晶量小於欲塗 佈的預定總液晶量。 枢據習知技術，作業員視覺檢查是否有漏滴發生，並基於 作業員的判斷手動地操作液晶塗佈裝置來修復漏滴。 了執行這齡序，作#必須非常麟且有經驗\者、而當^ 業員不在時，就不能進行後續的程序而必須等到作業員回來並 修復运些漏滴。 再者’若沒有漏滴發生但是有液晶量少於參考量之液晶滴 時作業員很難檢查出短少了多少的液晶量。因此，要精確修 復這些有缺陷的液晶滴非常困難。 【發明内容】 揭露一種液晶塗佈裝置’其容許從偵測滴落液晶的缺陷到 修復有缺陷液晶滴之程序自動化。 根據一方面提供一種液晶塗佈裝置，包含：至少一喷嘴， 7 200932376 其相對於堆疊基板移動；提供液晶到噴嘴之液晶供應單元，以 容許嘴嘴滴落液晶縣板；置於喷嘴之下部之缺陷侧感測 器，當喷嘴移動且滴落液晶到基板時，偵測是否有滴落液晶的 缺陷，其中液晶由液晶供應單元所供應；修復感測器，移動到 缺陷偵測感測器偵測到有缺陷之位置，決定缺陷是否涉及液晶 的滴落，以及汁舁所需液晶量；以及控制單元，控制液晶供應 單元，以自噴嘴滴落與修復感測器計算之所需液晶量相當的液 旦〇 配合所附圖式及以下詳細說明揭露本發明例示實施例，將 使熟此技藝者了解本發明其他特徵。 【實施方式】 提供以下說明以助於讀者了解於此所述之方法、裝置、及 /或系統。因此，熟此技藝者應了解於此所述之系統、裝置、 及/或方法有各種變化、修改、及均等物。再者，為增加清楚 性及簡潔性’省略熟知功能及結構之說明。 圖1為根據例示實施例之液晶塗佈裝置之組態圖。參考圖 卜液晶塗佈裝置包含至少一噴嘴lu、液晶供應單元12〇、缺 陷偵測感測器130、修復感測器14〇、以及控制單元15〇。 喷嘴111相對於裝載基板移動。喷嘴接收來自液晶供 應單元120之液晶，並將液晶排到基板1〇以形成液晶層於基 8 200932376 板ίο上。 液晶供應單元120提供液晶到噴嘴in，以滴落液晶到基 板10。液阳供應早元120可由控制單元I%控制，以自嗜嘴 滴落預定量的液晶。 ' 當喷嘴111移動且滴落液晶到基板10時，缺陷偵測感測 器13 0偵測是否有滴落液晶的缺陷，其中液晶由液晶供應單元 120所供應。亦即，每次喷嘴ln移動預定距離時，缺陷偵測 感測器130偵測是否精確地滴落如預定量般之液晶。 由於提供到喷嘴111之液晶中有氣泡而可能發生液晶滴 缺陷。舉例而言，液晶滴缺陷可能包含當沒有液晶滴落到基板 10之預定位置時之漏滴，以及液晶滴的量少於液晶滴之預定 量。 自缺卩曰彳貞測感測器130所得之液晶滴缺陷資訊，可提供給 控制單元150。控制單元將當自缺陷偵測感測器13〇接收液晶 滴缺陷之資訊時喷嘴⑴所在的位置，認為是液晶滴缺陷位 置，並儲存此位置。 一旦完成液晶的滴落’修復感測器140移動到缺陷偵測感 測器13 0偵測到有滴落液晶缺陷之位置，並決定液晶滴是否實 際有缺陷。修復感測器140的移動可由儲存有缺陷液晶滴位置 9 200932376 之，制單元iso所控制。若液晶滴為缺陷的，修復感測器⑽ 計算液晶賴缺量。液晶短缺量的:纽可提餘控制單元 。控制單το 150控制液晶供應單元12〇，以提供與修復感測 器140 6十算之短缺量相當的液晶到嘴嘴⑴，以排出液晶到基 板10。於此過程中，控制單元15〇彳控制喷嘴移動到發生滴 洛液晶缺陷的位置。再者’控鮮元15G可敍地控継晶滴 落裝置100，而塗佈預定量的液晶到基板1〇。 以下將說明具有上述組態之液晶滴落裝置卿的應用範 當喷嘴111滴落液晶時，若產生缺陷液晶滴，例如漏滴或 液晶滴的量少於預定量’缺陷偵測感測器⑼偵測液晶滴是否 有缺陷，並將結果提供給控制單元m。控制單元iso識別出 ❹ 缺陷液晶滴發生的位置並將位置儲存，以及在完成滴落液晶 後，控制修復感測器140到缺陷液晶滴的位置。 修復f測器140決定液晶滴是否實際為缺陷的，若是缺陷 的，則計算液晶的短缺量，並提供計算結果給控制單元150。 控制單元150控制液晶供應單元12〇，以自噴嘴U1塗佈與所 計算的量相當的液晶到基板10。因此，修復了缺陷的液晶滴， 而基板10可具有是有液晶預定量的液晶。 200932376 如上所述’偵測是否有缺陷液晶滴到修復缺陷液晶滴之程 序為自動化的。因此’相較於作業員視覺檢查是否有缺陷液晶 滴’然後基於作業員的判斷手動操作液晶滴落裝置來修復缺陷 液晶滴之案例，藉由這些自動化程序就不需要熟練的作業員。 此外’即使當作業貝不在時，缺随晶滴會自祕修復:因此 可順利地進行後續程序。因此，可避免降低生產力。再者，若 發生液晶滴的量少於預定量時，作業員很難檢查出缺少多少的 量，但是本發明可精確地計算液晶的短缺量，因而可執行適當 的額外塗佈液晶。結果’可輕易地修復缺陷的液晶滴。 噴嘴ill可裝設於頭單元110之喷嘴裝設塊112上，以相 對於基板10移動。頭單元110由頭支樓單元1〇2所支樓，且 頭支揮單元102安裝於框架1〇1上，而容許水平移動於一個方 向。此外’ S員單凡110安裝成移動於與頭支揮單元102之移動 方向垂直之水平方向。結果，料安裝於解元⑽之喷嘴 111相對於基板1〇移動。 备藉由形成複數個單位面板於具有大面積之上及下玻璃 基板而欲使生產力成長時，可提供複數彳时嘴⑴。單位面板 „顯示器所用之液晶顯示面板。複數個喷嘴⑴設置成 :個早位面板至少有—個喷嘴來滴落液晶^結果，可同時於複 數個面板上形成液晶層，因而可增加生產力。 液晶供應單元120可包含注射器⑵以及栗模組122。注 200932376 射器121含有待提供給喷嘴⑴之液晶。自注射器i2i供給液 晶到喷嘴ill時’泵模組122用以提供注射器121排出壓力， 、’、《果使喷嘴111能排出液晶。再者，泵模組122具有閥結構， 用以打開及/或阻檔液晶在注射器121及喷嘴lu㈤的流動， 使得僅預定量的液晶可自注射器121供應到喷嘴lu。 於另-實施例’液晶供應單元12〇可包含氣壓供應器，而 m f栗模組122。氣壓供應器供應注射器⑵預定壓力的空氣或 氣體，以提供排出壓力到液晶，使得喷嘴I〗！可排出液晶。 缺陷偵測感測器130設置於喷嘴m之下，且當進行液晶 滴落時偵測祕液晶的缺陷。雜_細器13()可為雷射^ 測器。雷射感測器包含發射光之光發射單元131，以及接收光 發射單元131發射的光之光接收單元132，如圖2所示。 紐射單元131及光接收單元132言免置於喷嘴ιη的下 ® 部’而喷嘴111插置於光發射單元131及光接收單元132之 間。光發射單元⑶放置成使絲射單元⑶發射的光通過嗔 嘴m的下#，而光接收單元132放置成接收光發射單元i3i 所發射的光。 光發射單元131可包含複數個光發射部，以加大_區 域。為達此㈣’光發射部可水平配置成彼此相關定距離。 複數個光發㈣甚至斜侧㈣嘴lu科地滴落液晶。 12 200932376 當決定所接收的訊號具有特定值時，光接收單元132可辨 識出訊號指示有滴落液晶的缺陷，其中所接收訊號得自從噴嘴 111移動到滴落液晶位置的時刻到預定時刻之一段預定時間。 亦即，就這段預定時間而言’如圖3A所示，來自噴嘴m 之液晶滴可能並未通過光發射單元131及光接收單元132之 間°然後’光發射單元131的光直接行進到光接收單元132。 φ 因此，這段預定時間接收的訊號具有在公差範圍内之特定值。 於此案例中，光接收單元132決定所接收訊號具有固定值，且 認為沒有液晶滴而發生漏滴。 相反地，就這段預定時間而言，如圖3B所示，液晶滴可 能通過光發射單元131及光接收單元132之間。然後，光發射 單元131的光被通過的液晶滴反射而未入射到光接收單元 132。因此，當液晶滴通過光發射單元ι31及光接收單元 間之時間左右所得到的訊號值，不同於液晶滴正好通過光發射 〇 單元131及光接收單元132間之時所得到的訊號值。於此案例 中，光接收單元132認為有液晶滴落。 當在一段預定時間得到的接收訊號之波形與參考訊號之 波形不同時，光接收單元132可認為有滴落液晶的缺陷。 換言之’在一段預定時間時，當來自噴嘴的液晶滴的量少 於或大於預定量時’缺陷液晶滴不同於具有預定量之液晶滴。 13 200932376 因此’由光接收單元132得到的關於缺陷液晶滴之接收訊號的 波形’不同於關於具有預定量液晶滴之接收訊號的波形。 光接收單元132儲存具有預定量之液晶滴的波形，作為參 考訊號波形。光接收單元132比較來自喷嘴111之液晶滴的所 接收訊號波形與參考訊號波形，當決定所接收訊號的波形與參 考訊號波形相同時，則認為液晶滴為正常液晶滴。再者，當兩 個波形間的差異是在公差範圍内時，光接收單元132決定兩個 波形為相同的。 若決定所接收訊號的波形不同於參考訊號波形，則光接收 單元132認為對應接收訊號的液晶滴為缺陷液晶滴。再者，當 決定所接收訊號及參考訊號的兩個波形間的差異超出公差範 圍時時’光接收早元132 s忍為兩個波形不同。同時，光接收單 元132可僅將接收光轉換成電訊號，而控制單元15〇可包含訊 號處理單元來處理轉換的電訊號。 如上所述，由於光發射單元131發射光，而光接收單元 132處理接收的訊號，來偵測滴落液晶的缺陷，而可以非接觸 方式偵測缺陷液晶滴。因此’從喷嘴ln塗佈的液晶滴不受液 晶滴缺陷偵測程序的影響。於其他實施例，缺陷偵測感測器 130可組態成具有不同非接觸方式之視覺感測器。 σ 缺I5曰偵測感測裔130可更包含抗液晶濺污罩1 %。抗液晶 200932376 濺污罩136避免從喷嘴111射出且接觸基板1〇的液晶濺灑到 喷嘴111，而進入光發射單元131及光接收單元132之間。因 此’可精確地偵測缺陷液晶滴。 抗液晶濺污罩136置於光發射單元HI及光接收單元132 的下部，且在對應喷嘴111下部的部份具有孔136a ^ ❺ 同時’修復感測器140可為視覺感測器，如圖4A所示， 取得偵測到有滴落液晶缺陷之位置EP的影像，處理所得影 像，並決定是否實際有缺陷液晶滴。當修復感測器14〇偵測到 漏滴，修復感測器140輸出與一滴液晶預定量相同的液晶短缺 量到控制單元150。在完成滴落液晶後，若控制單元15〇僅偵 測到漏滴，控制單元150控制喷嘴1U到發生漏滴的位置Epi 塗佈液晶滴。。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 TECHNICAL FIELD OF THE INVENTION The present invention relates to a device for coating liquid crystal on a substrate to form a liquid crystal layer of a liquid crystal display. [Prior Art] Compared to cathode ray tubes (CRTs), liquid crystal displays (LCDs) have more advanced visibility and lower power consumption, and generate less heat. As a result, liquid crystal displays and plasma display panels (PDPs) and field emission displays (FEDs) have become the next generation of displays for mobile phones, computer monitors, and televisions. A thin film transistor (TFT) liquid crystal display panel comprises a TFJ1 array substrate and a color filter array substrate. The two substrates are spaced apart from each other by about 4 to 5 m, and the liquid crystal layer is interposed therebetween. Further, in the portion around the display area, the two substrates are joined together by a sealant to prevent moisture or impurities from entering the liquid crystal layer. A plurality of methods for forming a liquid crystal layer are liquid crystal coating methods. In the liquid crystal coating method, a liquid crystal layer is formed by coating a liquid crystal into a specific region of a substrate defined by a sealant, two substrates are joined, and a sealant is hardened to bond the substrate. A liquid crystal layer was formed by a liquid crystal coating method, and a liquid crystal coating device was used, and a liquid crystal coating device was used to drip the liquid crystal onto the substrate. The liquid crystal is supplied to the nozzle from a syringe containing a liquid crystal. In this case, the liquid crystal coating device forms a liquid crystal layer having a predetermined amount of liquid crystal. In some cases, 'when the liquid crystal coating device drops liquid crystal, the liquid crystal supplied to the nozzle may contain Wei bubble' and cause the off, the drop may cause defects in coating the liquid crystal, and after the liquid crystal is finished, the actual coating will be made. The total liquid crystal amount of the cloth is smaller than the predetermined total liquid crystal amount to be coated. According to the conventional technique, the operator visually checks whether or not a leak occurs, and manually operates the liquid crystal coating device to repair the leak based on the judgment of the operator. In order to perform this age, it must be very versatile and experienced, and when the clerk is absent, the subsequent procedures cannot be performed and the operator must wait until the operator returns and repairs the leaks. Furthermore, if there is no leaking droplet but there is a liquid crystal droplet having a liquid crystal amount smaller than the reference amount, it is difficult for the operator to check how much liquid crystal is short. Therefore, it is very difficult to accurately repair these defective liquid crystal droplets. SUMMARY OF THE INVENTION A liquid crystal coating apparatus is disclosed which allows for automation of procedures from detecting defects of dripping liquid crystals to repairing defective liquid crystal droplets. According to one aspect, a liquid crystal coating apparatus is provided, comprising: at least one nozzle, 7 200932376, which moves relative to a stacked substrate; a liquid crystal supply unit that supplies liquid crystal to the nozzle to allow the nozzle to drip off the liquid crystal county plate; and is placed under the nozzle The defect side sensor detects whether there is a defect of dropping liquid crystal when the nozzle moves and drops the liquid crystal to the substrate, wherein the liquid crystal is supplied by the liquid crystal supply unit; repairing the sensor, moving to the defect detection sensor Detecting the location of the defect, determining whether the defect involves the dripping of the liquid crystal, and the amount of liquid crystal required for the juice mash; and the control unit controlling the liquid crystal supply unit to be equivalent to the amount of liquid crystal required for the nozzle drips and the repair sensor The exemplified embodiments of the present invention are disclosed in the accompanying drawings and the detailed description below. [Embodiment] The following description is provided to assist the reader in understanding the methods, devices, and/or systems described herein. Accordingly, it will be apparent to those skilled in the art that various changes, modifications, and equivalents of the systems, devices, and/or methods described herein. Furthermore, the description of well-known functions and structures is omitted for added clarity and simplicity. 1 is a configuration diagram of a liquid crystal coating apparatus according to an exemplary embodiment. Referring to the drawing, the liquid crystal coating apparatus includes at least one nozzle lu, a liquid crystal supply unit 12A, a defect detecting sensor 130, a repair sensor 14A, and a control unit 15A. The nozzle 111 moves relative to the loading substrate. The nozzle receives the liquid crystal from the liquid crystal supply unit 120 and discharges the liquid crystal to the substrate 1 to form a liquid crystal layer on the substrate 8 200932376. The liquid crystal supply unit 120 supplies liquid crystal to the nozzle in to drip the liquid crystal to the substrate 10. The liquid supply early 120 can be controlled by the control unit I% to drip a predetermined amount of liquid crystal from the mouth. When the nozzle 111 moves and drops the liquid crystal to the substrate 10, the defect detecting sensor 130 detects whether or not there is a defect of dripping the liquid crystal, which is supplied from the liquid crystal supply unit 120. That is, each time the nozzle ln is moved by a predetermined distance, the defect detecting sensor 130 detects whether or not the liquid crystal as a predetermined amount is dripped accurately. Liquid crystal droplet defects may occur due to bubbles in the liquid crystal supplied to the nozzle 111. For example, the liquid crystal droplet defect may include a leak when no liquid crystal drops to a predetermined position of the substrate 10, and the amount of the liquid crystal droplet is less than a predetermined amount of the liquid crystal droplet. The liquid crystal droplet defect information obtained from the missing sensor 130 can be supplied to the control unit 150. The control unit will consider the position of the nozzle (1) when the information of the liquid crystal droplet defect is received from the defect detecting sensor 13 as a liquid crystal drop defect position, and store the position. Once the drop of the liquid crystal is completed, the repair sensor 140 moves to the position where the defect detecting sensor 130 detects the drop of the liquid crystal defect and determines whether the liquid crystal drop is actually defective. The movement of the repair sensor 140 can be controlled by the unit iso, which stores the defective liquid crystal drop position 9 200932376. If the liquid crystal droplet is defective, the repair sensor (10) calculates the liquid crystal lag. The shortage of liquid crystal: Newcomer control unit. The control unit το 150 controls the liquid crystal supply unit 12A to provide a liquid crystal to the nozzle (1) corresponding to the shortage of the repair sensor 140 6 to discharge the liquid crystal to the substrate 10. In this process, the control unit 15 controls the nozzle to move to a position at which the liquid crystal defect occurs. Further, the control unit 15G can control the crystal dropping device 100 to apply a predetermined amount of liquid crystal to the substrate 1〇. The application of the liquid crystal dripping device having the above configuration will be described. When the nozzle 111 drops liquid crystal, if a defective liquid crystal droplet is generated, for example, the amount of the leak or the liquid crystal droplet is less than a predetermined amount, the defect detecting sensor (9) The liquid crystal droplet is detected to be defective, and the result is supplied to the control unit m. The control unit iso recognizes the position at which the defective liquid crystal droplets occur and stores the position, and controls the position of the repair sensor 140 to the defective liquid crystal droplets after the liquid crystal is dropped. The repair f-tester 140 determines whether the liquid crystal drop is actually defective. If it is defective, the liquid crystal shortage amount is calculated, and the calculation result is supplied to the control unit 150. The control unit 150 controls the liquid crystal supply unit 12A to apply liquid crystal equivalent to the calculated amount from the nozzle U1 to the substrate 10. Therefore, the defective liquid crystal droplets are repaired, and the substrate 10 may have a liquid crystal having a predetermined amount of liquid crystal. 200932376 As described above, the procedure for detecting the presence or absence of defective liquid crystal droplets to repair defective liquid crystal droplets is automated. Therefore, the case of repairing the defective liquid crystal droplets by the operator's visual inspection of the defective liquid crystal droplets and then manually operating the liquid crystal dropping device based on the judgment of the operator does not require a skilled worker. In addition, even when the job is not in use, the missing droplets will be repaired by the secret: so the subsequent procedure can be carried out smoothly. Therefore, it is possible to avoid reducing productivity. Further, if the amount of liquid crystal droplets is less than a predetermined amount, it is difficult for the operator to check how much is missing, but the present invention can accurately calculate the shortage of the liquid crystal, and thus an appropriate additional coating liquid crystal can be performed. As a result, defective liquid crystal droplets can be easily repaired. The nozzle ill can be mounted on the nozzle mounting block 112 of the head unit 110 to move relative to the substrate 10. The head unit 110 is supported by the head stand unit 1〇2, and the head support unit 102 is mounted on the frame 1〇1 while allowing horizontal movement in one direction. Further, the 'S member's unit 110 is mounted to move in a horizontal direction perpendicular to the moving direction of the head fulcrum unit 102. As a result, the nozzle 111 mounted on the solution element (10) moves relative to the substrate 1〇. When a plurality of unit panels are formed to have a large area above and below the glass substrate to increase productivity, a plurality of mouths (1) can be provided. Unit panel „The liquid crystal display panel used for the display. The plurality of nozzles (1) are arranged such that: at least one nozzle has a nozzle to drop the liquid crystal, and the liquid crystal layer can be formed on the plurality of panels at the same time, thereby increasing productivity. The supply unit 120 can include a syringe (2) and a pump module 122. Note 200932376 The emitter 121 contains liquid crystal to be supplied to the nozzle (1). When the liquid crystal is supplied from the injector i2i to the nozzle ill, the pump module 122 is used to provide the discharge pressure of the syringe 121, ', the fruit allows the nozzle 111 to discharge the liquid crystal. Further, the pump module 122 has a valve structure for opening and/or blocking the flow of the liquid crystal in the injector 121 and the nozzle lu (f) so that only a predetermined amount of liquid crystal is available from the injector 121. Supply to the nozzle lu. The other embodiment 'liquid crystal supply unit 12' may include a pneumatic supply, and the mf pump module 122. The air supply supplies the syringe (2) a predetermined pressure of air or gas to provide discharge pressure to the liquid crystal, such that The nozzle I can discharge the liquid crystal. The defect detecting sensor 130 is disposed under the nozzle m, and detects the defect of the liquid crystal when the liquid crystal is dropped. The multiplexer 13() may be a laser detector. The laser sensor includes a light emitting unit 131 that emits light, and a light receiving unit 132 that receives light emitted by the light emitting unit 131, as shown in FIG. The firing unit 131 and the light receiving unit 132 are exempt from the lower portion of the nozzle ι and the nozzle 111 is interposed between the light emitting unit 131 and the light receiving unit 132. The light emitting unit (3) is placed to emit the ray unit (3) The light passes through the lower # of the mouth m, and the light receiving unit 132 is placed to receive the light emitted by the light emitting unit i3i. The light emitting unit 131 may include a plurality of light emitting portions to enlarge the _ region. To achieve this (four)' The light emitting portions can be horizontally arranged to be related to each other by a fixed distance. The plurality of light emitting waves (four) or even the oblique side (four) mouth drops the liquid crystal. 12 200932376 When it is determined that the received signal has a specific value, the light receiving unit 132 can recognize the signal. Indicates a defect in which the liquid crystal is dropped, wherein the received signal is obtained from a time from the movement of the nozzle 111 to the dropping of the liquid crystal position to a predetermined time of a predetermined time. That is, as for the predetermined time, as shown in FIG. 3A, Nozzle m liquid The droplet may not pass between the light emitting unit 131 and the light receiving unit 132 and then the light of the 'light emitting unit 131 directly travels to the light receiving unit 132. φ Therefore, the signal received during the predetermined time has a tolerance within the tolerance range. Specific value. In this case, the light receiving unit 132 determines that the received signal has a fixed value and considers that there is no liquid crystal droplet to cause a leak. Conversely, as for the predetermined time, as shown in FIG. 3B, the liquid crystal droplet may The light is emitted between the light emitting unit 131 and the light receiving unit 132. Then, the light of the light emitting unit 131 is reflected by the liquid crystal droplet passing therethrough without being incident on the light receiving unit 132. Therefore, when the liquid crystal droplet passes through the light emitting unit ι31 and the light receiving unit The signal value obtained around the time is different from the signal value obtained when the liquid crystal droplet passes between the light emitting unit 131 and the light receiving unit 132. In this case, the light receiving unit 132 considers that liquid crystal is dripping. When the waveform of the received signal obtained at a predetermined time is different from the waveform of the reference signal, the light receiving unit 132 can be regarded as having a defect of dropping the liquid crystal. In other words, when the amount of liquid crystal droplets from the nozzle is less than or greater than a predetermined amount for a predetermined period of time, the defective liquid crystal droplets are different from the liquid crystal droplets having a predetermined amount. 13 200932376 Therefore, the waveform of the reception signal of the defective liquid crystal droplet obtained by the light receiving unit 132 is different from the waveform of the reception signal having a predetermined amount of liquid crystal droplets. The light receiving unit 132 stores a waveform having a predetermined amount of liquid crystal droplets as a reference signal waveform. The light receiving unit 132 compares the received signal waveform and the reference signal waveform of the liquid crystal droplets from the nozzle 111. When it is determined that the waveform of the received signal is the same as the reference signal waveform, the liquid crystal droplet is considered to be a normal liquid crystal droplet. Furthermore, when the difference between the two waveforms is within the tolerance range, the light receiving unit 132 determines that the two waveforms are the same. If it is determined that the waveform of the received signal is different from the reference signal waveform, the light receiving unit 132 considers that the liquid crystal droplet corresponding to the received signal is a defective liquid crystal droplet. Furthermore, when it is determined that the difference between the two waveforms of the received signal and the reference signal is out of the tolerance range, the light receiving early element 132 s endures that the two waveforms are different. At the same time, the light receiving unit 132 can convert only the received light into an electrical signal, and the control unit 15 can include a signal processing unit to process the converted electrical signal. As described above, since the light emitting unit 131 emits light, and the light receiving unit 132 processes the received signal to detect the defect of the dropped liquid crystal, the defective liquid crystal droplet can be detected in a non-contact manner. Therefore, the liquid crystal droplets coated from the nozzle ln are not affected by the liquid crystal droplet defect detecting procedure. In other embodiments, the defect detection sensor 130 can be configured as a visual sensor having a different non-contact manner. The σ-deficient I5曰 detection sensory 130 can further contain 1% anti-liquid crystal splash cover. Anti-liquid crystal 200932376 The splash mask 136 prevents the liquid crystal which is emitted from the nozzle 111 and contacts the substrate 1 from splashing onto the nozzle 111, and enters between the light emitting unit 131 and the light receiving unit 132. Therefore, defective liquid crystal droplets can be accurately detected. The anti-liquid crystal splash cover 136 is disposed at a lower portion of the light emitting unit HI and the light receiving unit 132, and has a hole 136a at a portion corresponding to the lower portion of the nozzle 111. Meanwhile, the 'repair sensor 140 may be a visual sensor, as shown in the figure. As shown in Fig. 4A, an image of the position EP where the liquid crystal defect is dropped is obtained, the resulting image is processed, and it is determined whether or not the actual liquid crystal droplet is actually defective. When the repair sensor 14 detects a leak, the repair sensor 140 outputs a liquid crystal shortage amount equal to a predetermined amount of liquid crystal to the control unit 150. After the dropping of the liquid crystal is completed, if the control unit 15 detects only the leak, the control unit 150 controls the nozzle 1U to apply the liquid crystal droplet to the position Epi where the leak occurs.
當決定缺陷液晶滴是否為液晶滴的量少於預定量，或液晶 滴的量多於預定量時，修復感測器14〇由所得影像量測液晶: 的體積。然後，修復感測器14〇比較量測值與參考值，以得到 液晶的短缺量和超過量，然後將此量輸出到控制單元15〇。參 考值為具有預定量之液晶滴的體積。 旦修復感測器140可利用各種類型的方法得到液晶的短缺 !和超過量。舉例而言’根據液晶滴的表面高度，所得的影像 可包含不同顏色的資訊，且基於此雜，修復感測器14〇可將 15 200932376 所得影像之顏色資料轉換成所塗佈液晶滴之表面高度資料，然 後計算所塗佈液晶滴的體積。 … 發生漏滴或液晶滴的量少於液晶預定量後，喷嘴ln可能 有液晶殘留在端部。於此案例中，殘留的液晶可能與下一滴: 起塗佈，使得液晶滴的量大於液晶預定量。如此一來，當有漏 滴時’或同時有液晶滴的量少於液晶預定量與液晶滴的量大於 ❿ 減預定量時，控制單元150藉由比較液晶預定量與在滴落液 晶後液晶超過量及液晶短缺量相映所得之值，來計算液 缺量。 若控制單元150決定液晶有短缺，則控制單元15〇控制喷 嘴111到偵測到有漏滴或液晶滴的量少於預定量之位置，並控 制喷嘴111塗佈具有液晶短缺量之液晶滴。 工When it is determined whether the defective liquid crystal droplets are less than a predetermined amount of liquid crystal droplets, or the amount of liquid crystal droplets is more than a predetermined amount, the repair sensor 14 measures the volume of the liquid crystal: from the resulting image. Then, the repair sensor 14 compares the measured value with the reference value to obtain the shortage amount and the excess amount of the liquid crystal, and then outputs the amount to the control unit 15A. The reference value is the volume of the liquid crystal droplet having a predetermined amount. The repair sensor 140 can utilize various types of methods to obtain a shortage of liquid crystals and excess amounts. For example, 'based on the surface height of the liquid crystal droplets, the resulting image may contain information of different colors, and based on this miscellaneous, the repair sensor 14 may convert the color data of the image obtained by 15 200932376 into the surface of the coated liquid crystal droplet. Height data, then calculate the volume of the coated liquid crystal droplets. ... After the occurrence of a leak or liquid crystal droplet is less than a predetermined amount of liquid crystal, the nozzle ln may have liquid crystal remaining at the end. In this case, the residual liquid crystal may be coated with the next drop: so that the amount of liquid crystal droplets is larger than the predetermined amount of liquid crystal. In this way, when there is a leak, or when the amount of the liquid crystal droplets is less than the predetermined amount of the liquid crystal and the amount of the liquid crystal droplets is greater than the predetermined amount by the reduction, the control unit 150 compares the predetermined amount of the liquid crystal with the liquid crystal after dropping the liquid crystal. The liquid deficiency is calculated by comparing the excess amount with the amount of liquid crystal shortage. If the control unit 150 determines that there is a shortage of the liquid crystal, the control unit 15 controls the nozzle 111 to detect that there is a leak or the amount of liquid crystal droplets is less than a predetermined amount, and controls the nozzle 111 to apply a liquid crystal droplet having a liquid crystal shortage amount. work
控制單元150可控嫩嘴⑴義到铜到有㈣或液晶 ，的量少於液晶預定量之位置上，然後控制噴嘴⑴塗佈對應 量的液晶滴。於另一實施例，控制單元15〇可移動喷嘴m ^ 偵測到有漏滴或液晶滴的量少於液晶預定量之位置旁的位 ^以容許喷嘴m 液晶。於此案财，使在有漏滴或 發生，晶刺量少於液晶量的位置有氣_留，液晶可滴落到 殘留氣泡旁。因此’可避免_落液晶到氣泡上而使殘留氣泡 與液晶層混合。 y 200932376 修復感測H MG比較所得影像及預存影像， 相同的影像，織輸丨馳取影像之液 量 並擷取決定為 晶短缺量和液晶超過 液曰有預，之液晶滴之影像，鱗影像具有固定的 圍内曰時考量。此外’當兩梅像的轉在公差範 ❹ 眸㈣二復感測15140決定所得影像與預存影像為相同。同 =所^測_可僅取得影像，而控制單元15G可包含處 理所侍衫像之影像處理單元。 根據例示實_，從_赫液晶的缺_修復缺陷液晶 =程序可為自動化的。因此，並不需要有熟練的作業員，即 使备作業員不在時，亦可自動地修復滴落液晶的缺陷。結果， 可順利地進行後續程序，而可避免降低生產力。 再者，^作業員很難視覺檢查液晶的短缺量是多少時，根 據例示實施例，可精確地量測液晶的短缺量，而可滴落所需的 液晶量。因此可輕易地修復缺陷液晶滴。 熟此技術領域者應明瞭在不悖離本發明申請專利範圍界 疋之精神與範疇下可有各種修改及變化^因此本發明意欲涵蓋 所述申請專利範圍之範疇及其均等物所提供之各種變化及修 改。 17 200932376 【圖式簡單說明】 ®1為根據例示實施例之液晶塗佈裝置之組態圖。 圖2為裝设於圖1之頭單元上之缺陷偵測感測器及修復感 測器之透視圖。 圖3A及圖3B為喷嘴之截面圖，說明圖2之缺陷偵測感 測器如何偵測是否從噴嘴落下液晶滴。 圖4A及圖4B為喷嘴之截面圖，說明圖2之修復感測器 如何決定並修復缺陷的液晶滴。 【主要元件符號說明】 10 基板 100 液晶滴落裝置 101 框架 102 頭支撐單元 110 頭單元 111 喷嘴 112 喷嘴裝設塊 120 液晶供應單元 121 注射器 122 泵模組 130 缺陷偵測感測器 131 光發射單元 132 光接收單元 136 抗液晶；賤污罩 18 200932376 136a 140 150 孔 修復感測器 控制單元The control unit 150 can control the position of the tender mouth (1) to copper to (4) or liquid crystal, the amount of which is less than the predetermined amount of the liquid crystal, and then control the nozzle (1) to apply a corresponding amount of liquid crystal droplets. In another embodiment, the control unit 15 〇 the movable nozzle m ^ detects a bit near the position where the amount of the leak or the liquid crystal droplet is less than the predetermined amount of the liquid crystal to allow the nozzle m to liquid. In this case, the gas is left in the position where there is a leak or occurrence, and the amount of the thorn is less than the amount of the liquid crystal, and the liquid crystal can drip to the residual bubble. Therefore, it is possible to prevent the liquid crystal from falling onto the bubble and mixing the residual bubble with the liquid crystal layer. y 200932376 Fixing the H MG comparison image and pre-stored image, the same image, weaving and absorbing the liquid volume of the image and taking the image as the crystal shortage and the liquid crystal over the liquid sputum, the image of the liquid crystal droplet, scale The image has a fixed inner circumference. In addition, when the two plum images are rotated in the tolerance range 眸 四 (4), the second complex sensing 15140 determines that the resulting image is the same as the pre-stored image. The same can be used to obtain only the image, and the control unit 15G can include an image processing unit that processes the image of the shirt. According to the example _, the lack of _he liquid crystal _ repair defect LCD = program can be automated. Therefore, it is not necessary to have a skilled worker, and the defect of the dripping liquid crystal can be automatically repaired even when the worker is not present. As a result, subsequent procedures can be performed smoothly, and productivity can be avoided. Further, when it is difficult for the operator to visually check the shortage of the liquid crystal, according to the exemplary embodiment, the shortage of the liquid crystal can be accurately measured, and the required amount of liquid crystal can be dropped. Therefore, defective liquid crystal droplets can be easily repaired. It will be apparent to those skilled in the art that various modifications and changes can be made without departing from the spirit and scope of the inventions. Changes and modifications. 17 200932376 [Simple Description of the Drawings] ® 1 is a configuration diagram of a liquid crystal coating apparatus according to an exemplary embodiment. Figure 2 is a perspective view of the defect detecting sensor and the repair sensor mounted on the head unit of Figure 1. 3A and 3B are cross-sectional views of the nozzle, illustrating how the defect detecting sensor of Fig. 2 detects whether a liquid crystal drop is dropped from the nozzle. 4A and 4B are cross-sectional views of the nozzle illustrating how the repair sensor of Fig. 2 determines and repairs defective liquid crystal droplets. [Main component symbol description] 10 Substrate 100 Liquid crystal dropping device 101 Frame 102 Head supporting unit 110 Head unit 111 Nozzle 112 Nozzle mounting block 120 Liquid crystal supply unit 121 Syringe 122 Pump module 130 Defect detection sensor 131 Light emitting unit 132 light receiving unit 136 anti-liquid crystal; smear cover 18 200932376 136a 140 150 hole repair sensor control unit