200944869 九、發明說明： 【發明所屬之技術領域】 本發明係一種應用於液晶面板的方向性檢查方法及其裝置，其係 特別關於一種利用感測器辨識方向性的之應用於液晶面板的方向性檢 查裝置。 【先前技術】 顯示器係人與資訊傳輸的橋樑，需要滿足挑剔的眼睛，因此不論 是可攜式產品、資訊產品或視訊產品，對影像顯示效果要求曰益提高， 為符合終端產品的使用環境及用途，所需的特性亦有所不同。在視角 ® 方面，最終都希望可以全方位的觀赏到影像，亦是液晶顯示器努力提 昇的技術之一。廣視角(wv)已成為顯示器必要的產品特性。 目月、】的LCD (液晶顯示器）產品幾乎都是搭配擁有廣視角(wy) 特性的偏光板(Polarizing Sheet)。偏光板或稱為偏光膜(p0|arizjng Rim) ’為一選擇讓特定方向的光通過的光學材料，應用範圍很廣，可 應用於LCD (液晶顯示器）產品，主要功能是將非偏極化光的自然光 線，轉換成為偏極化光，透過液晶的轉向後，產生明態與暗態之顯影 效果’每片LCD面板需要使用上下二片偏極方向呈90度垂直的偏光 ^板，一片讓背光源以特定方向光進入，另一片則視電場對液晶的控制， 以達到光穿透或遮斷的效果，以達提高背光源的光利用效率同時降低 LCD的耗電量’使液晶面板達到南亮度、低耗電及高精細的產品特性， 為液晶顯示器之重要關鍵零組件之一，直接影響液晶螢幕的品質，佔 LCD總生產成本約6%。 假如，上下兩片偏光板的極方向呈180度，明暗等光學特性會完 全相反；這種偏光板與CF、TFT的錯誤結合主因在於： 1.進料時，人為放置錯誤。 2_發生混料，導致CF、TFT偏光板放反。 依照目前現有的製作流程，如要檢查出上述錯誤，須等到，抽檢 200944869 或者點燈測試檢查時才發現，然後必須將偏光板與CF、TFT重工，重 工後的部分偏光板會有損壞，況且重工此種方式屬於事後的補償措 施’並非較佳的方式。無論是重1時的人力成本、偏光板損毀的成本， 所造成的損失對於目前市場上低毛率的競爭策略的。 為此，本發明提供一種應用於液晶面板的方向性檢查方法及其裝 置，f每一片偏光板與CF基板或TFT基板貼合前，檢查偏光板的方 向性是否正確；本發明雜可以細在〇|=基板與TFT基板貼合前的 檢查’藉此改善上述缺失β 【發明内容】 ® 本發明之主要目的在提供一種應用於液晶面板的方向性檢查方法 • 及其裝置’其係利用一感測器檢查偏光板上的標記，冑以確認偏光板 - 的方向。 本發明之另一目的在提供一種應用於液晶面板的方向性檢查方法 及其裝置，其係節省偏光板與CF、TFT的重工人力成本。 本發明係提供一應用於液晶面板的方向性檢查方法及其裝置，其 係提升偏光板的使用良率，並提升LCD產品的整體良率。 本發明係提供一應用於液晶面板的方向性檢查方法及其裝置其 ❹係彻承載基自抓取具有-標記的-偏光板、CF基板歧TFT基板 後，將偏光板、CF基板或是TFT基板沿著一路徑，送至一貼合區， 在路徑的上方或下方設有至少一感測器係能偵測標記，感測器連接到 一辨識裝置’辨識裝置內建有正確雜記。辨識裝置能判斷該標記是 否正確，如判斷結果係正確，則允許該偏光板與該貼合區内之一基板 貼合’如判斷結果係不正確，則不允許該偏光板與該基板貼合。 底下藉由具體實施例配合所附的圖式詳加說明，當更容易瞭解本 發明之目的、技術内容、特點及其所達成之功效。 【實施方式】 TFT-LCD產品需要將非偏極化光的自然光線，轉換成為偏極化 6 200944869 光’透過液晶的轉向後，產生明態與暗態之顯影效果，上下二片偏極 方向呈90度垂直的偏光板，直接影響液晶螢幕的品質^為能確保每一 片偏光板在對位時方向的正確性，本發明提供之應用於液晶面板的方 向性檢查方法及其裝置能讓偏光板與CF基板、偏光板與TFT基板、 CF基板與TFT基板，在貼合前先行進行方向性檢查。 為能詳細說明本發明，以下分別對偏光板與CF基板方向性、偏 光板與TFT基板方向性、CF基板與TFT基板方向性檢査之實施例做 一說明。 請參照第一圖。第一圖介紹的實施例係偏光板與CF基板方向性 β 檢查或者偏光板與TFT基板方向性檢查的實施例。 應用於液晶面板的方向性檢查裝置包括一承載基台12，承載基台 12上有真空吸盤14 ’真空吸盤14可以用來從載台24抓取一片偏光 板20，其中偏光板20上設有一標記22，標記22，在本實施例中，偏 光板20上的標記22為一個圓形。 承載基台12係經由A路徑到達一貼合區，在A路徑上設有一偵 測區16,當承載基台12抓取一片偏光板2〇後，係沿著a路徑前進， 偏光板20則被债測區16偵測。偵測區16包含至少一感測器18，感 測器彳8可以設在位於A路徑的上方或下方，感測器18係能偵測偏光 ®板20上的標記22;本實施例中的感測器18包括一電荷耦合元件影像 感測器(CCD) ’電荷耦合元件影像感測器接收到圓形圖案後，會將圓 形圖案與傳送到辨識裝置26與標記28進行判斷，如第1圖所示。辨 識裝置26判斷標記28等於標記22後’承載基台12會繼續運送偏光 板20到一貼合區與一片液晶面板(CF基板或TFT基板皆適用)貼合。 如感測器18無法偵測到標記22,請參照第三圖，在第三圖中偏 光板20上的標記22明顯無法被感測器18偵測到，換言之辨識裝置 26沒有判斷樣本，辨識裝置26將會判斷標記28不等於標記22，因 此應用於液晶面板的方向性檢查裝置不會允許偏光板2〇被送到貼合 7 200944869 區與液晶面板貼合。應用於液晶面板的方向性檢查裝置會發出警示 並將錯誤的偏光板20排出等待檢查。 不’ 當偏光板上的標記30與辨識裝置26設定的標記28不同，如第 四圖所示，應用於液晶面板的方向性檢查裝置會發出警示，並將麫 的偏光板20排出等待檢查。 曰誤 關於標記的圖案部分’標記設定為圓形、矩形、星形、或任一 角形之圖形等多種圖案，實際的生產作業中各種標記的圖案係用^ 隔產品的舰，❹旧18細標記後，賴記傳雜該賴裝置 進行判斷。200944869 IX. Description of the Invention: [Technical Field] The present invention relates to a directionality inspection method and apparatus for a liquid crystal panel, and more particularly to a direction for applying a sensor to identify a directivity applied to a liquid crystal panel Sex check device. [Prior Art] The display is a bridge between people and information transmission, and needs to meet the eye-catching eyes. Therefore, whether it is a portable product, an information product or a video product, the image display effect is greatly improved, in order to meet the use environment of the terminal product and Use, the characteristics required are also different. In terms of perspective ® , it is hoped that you can view images in all directions, and it is one of the technologies that LCD monitors are trying to improve. Wide viewing angle (wv) has become a necessary product feature for displays. Almost all LCD (liquid crystal display) products are equipped with Polarizing Sheets with wide viewing angle (wy) characteristics. A polarizing plate or polarizing film (p0|arizjng Rim) is an optical material that allows light in a specific direction to pass through. It can be applied to LCD (liquid crystal display) products, and its main function is to non-polarization. The natural light of light is converted into polarized light. After the liquid crystal is turned, the developing effect of the bright state and the dark state is produced. 'Each LCD panel needs to use a polarizing plate with a vertical angle of 90 degrees in the upper and lower directions. Let the backlight enter the light in a specific direction, and the other piece depends on the control of the liquid crystal by the electric field to achieve the effect of light penetration or interruption, so as to improve the light utilization efficiency of the backlight and reduce the power consumption of the LCD. Achieving south brightness, low power consumption and high-definition product characteristics, it is one of the key components of liquid crystal display, directly affecting the quality of LCD screen, accounting for about 6% of total LCD production cost. If the polar direction of the upper and lower polarizing plates is 180 degrees, the optical characteristics such as light and dark will be completely opposite; the main reason for the wrong combination of the polarizing plate and CF and TFT is: 1. When placing the material, the human is placed incorrectly. 2_ Mixing occurs, causing the CF and TFT polarizers to reverse. According to the current production process, if you want to check the above errors, you must wait until the test of 200944869 or the lighting test, and then you must re-work the polarizing plate with CF and TFT. Some polarizers after heavy work will be damaged. It is not the preferred way to rework this type of work as an after-the-fact compensation measure. Regardless of the labor cost at the time of heavy weight and the cost of damage to the polarizing plate, the losses caused by the current low-margin competition strategy on the market. Therefore, the present invention provides a method for directionality inspection applied to a liquid crystal panel and a device thereof. Before each polarizing plate is bonded to a CF substrate or a TFT substrate, it is checked whether the directivity of the polarizing plate is correct; 〇|=Inspection before bonding of the substrate and the TFT substrate' thereby improving the above-mentioned missing β [Invention] The main object of the present invention is to provide a method for directionality inspection applied to a liquid crystal panel and a device thereof The sensor checks the mark on the polarizer and confirms the direction of the polarizer -. Another object of the present invention is to provide a directionality inspection method and apparatus for a liquid crystal panel, which are capable of saving labor costs of a polarizing plate and CF and TFT. The present invention provides a directionality inspection method and apparatus for a liquid crystal panel, which improves the use yield of the polarizing plate and improves the overall yield of the LCD product. The present invention provides a directionality inspection method for a liquid crystal panel and a device thereof, which are provided with a polarizing plate, a CF substrate or a TFT after the substrate is self-grabbed with a --polarized plate and a CF substrate. The substrate is sent along a path to a bonding area. At least one sensor system can detect the mark above or below the path, and the sensor is connected to an identification device. The identification device has a proper memory. The identification device can determine whether the mark is correct. If the determination result is correct, the polarizing plate is allowed to be attached to one of the substrates in the bonding area. If the determination result is incorrect, the polarizing plate is not allowed to be attached to the substrate. . The purpose, technical contents, features, and effects achieved by the present invention will become more apparent from the detailed description of the embodiments and the accompanying drawings. [Embodiment] The TFT-LCD product needs to convert the natural light of non-polarized light into a polarization. 6 200944869 Light's transmission through the liquid crystal, the development effect of the bright state and the dark state is generated, and the upper and lower polarized directions are The polarizing plate with a vertical angle of 90 degrees directly affects the quality of the liquid crystal screen. In order to ensure the correctness of the direction of each polarizing plate when it is aligned, the directionality inspection method and device for the liquid crystal panel provided by the present invention can make polarized light The plate and the CF substrate, the polarizing plate and the TFT substrate, the CF substrate, and the TFT substrate were examined for directivity before bonding. In order to explain the present invention in detail, the following describes an embodiment in which the directivity of the polarizing plate and the CF substrate, the directivity of the polarizing plate and the TFT substrate, and the directivity of the CF substrate and the TFT substrate are examined. Please refer to the first figure. The embodiment described in the first embodiment is an embodiment in which the polarizing plate and the CF substrate are oriented in the direction of β or the directivity inspection of the polarizing plate and the TFT substrate. The directional inspection device applied to the liquid crystal panel includes a carrier base 12 having a vacuum chuck 14 on the carrier base 12. The vacuum chuck 14 can be used to grab a polarizing plate 20 from the stage 24, wherein the polarizing plate 20 is provided with a polarizing plate 20 The mark 22, the mark 22, in the present embodiment, the mark 22 on the polarizing plate 20 is a circle. The bearing base 12 reaches a bonding area via the A path, and a detecting area 16 is disposed on the A path. When the carrying base 12 grabs a polarizing plate 2, it advances along the a path, and the polarizing plate 20 It is detected by the debt test area 16. The detecting area 16 includes at least one sensor 18, and the sensor 彳8 can be disposed above or below the A path, and the sensor 18 can detect the mark 22 on the polarizing plate 20; in this embodiment The sensor 18 includes a charge coupled device image sensor (CCD). After receiving the circular pattern, the charge coupled device image sensor transmits the circular pattern to the identification device 26 and the mark 28 for determination. Figure 1 shows. After the identification device 26 determines that the mark 28 is equal to the mark 22, the carrier base 12 continues to transport the polarizing plate 20 to a bonding area and is bonded to a liquid crystal panel (both CF substrate or TFT substrate). If the sensor 18 cannot detect the mark 22, please refer to the third figure. In the third figure, the mark 22 on the polarizing plate 20 is obviously not detected by the sensor 18, in other words, the identification device 26 does not judge the sample, and the identification The device 26 will judge that the mark 28 is not equal to the mark 22, and therefore the directionality inspection device applied to the liquid crystal panel does not allow the polarizing plate 2 to be fed to the bonding layer 7 200944869 to be bonded to the liquid crystal panel. The directionality inspection device applied to the liquid crystal panel issues a warning and discharges the erroneous polarizing plate 20 for inspection. No. When the mark 30 on the polarizing plate is different from the mark 28 set by the identification device 26, as shown in Fig. 4, the directionality inspection device applied to the liquid crystal panel issues a warning and discharges the 偏 polarizing plate 20 for inspection. The pattern part of the mark is marked as a circle, a rectangle, a star, or a pattern of any angle, and the pattern of various marks in the actual production operation is a ship with a product. After marking, Lai Ji passed the device to make a judgment.
其尹’上述提及喊卿18也可以是-個光學朗n或者是 射頻辨識介^請參照第五圖說明光學感測器利用穿透特性細^記 的實施例。_器係一光學感測器32時，標記34係一具有穿透特^ 的標記，假設光學感測S 32補測該標記34後，利用標記34上穿 特性的穿透率制數值，並練值傳雜_裝置36進行觸。 斷結果正確’則將偏光板2〇送至貼合區，如判斷結果不正確，則停止 貼合’應麟液晶面韻方向性檢查裝置會發出警*，並將錯誤 光板20排出等待檢查。 ％ 再請參照第六圖說明光學感測器利用反射特性侧標記的實施 感測器係-光學感測器38時，標記4〇係一具有穿透特性的標記， ，設光學感測器38個標記40後，利用標記4〇上反射特性的反射 =到數值，並練值傳遞給職裝置42進行㈣〜㈣結果正 確，碧偏光板20送至貼合區，如判斷結果不正確，則停止貼合，應 =液晶面板的方向性檢查裝置會發出警示，並將錯誤的偏光板 當感測器係無線射頻辨識介面44時，請參照第七圖。無線射頻辨 :“1面44係一讀取器’讀取器連接一台辨識裝置46,偏光板48上的 »己50則係標籤，當偏光板48上的標記能被無線射頻辨識介 8 200944869 面44讀取，並經辨識裝置46確認無誤後，則將偏光板48送至貼合 區’如辨識裝置46判斷結果不正確或無法讀取到標記5〇，則停止貼 合，應用於液晶面板的方向性檢查裝置會發出警示，並將錯誤的偏光 板48排出等待檢查。 以上實施例係介紹偏光板與CF基板或TFT基板方向性檢查之實 施例，再來繼續說明CF基板與TFT基板方向性檢查的實施例。 請參照第八圖。本發明之應用於液晶面板的方向性檢查裝置包括 一承載基台52 ’承載基台52上有真空吸盤54，真空吸盤54可以用 來從載台64抓取一片第一基板60，第一基板60係CF基板或TFT ❹基板’其中第一基板60上設有一標記62，標記62，在本實施例中， 第一基板60上的標記62為一個圓形。 承載基台52係經由A路徑到達一貼合區，在A路徑上設有一偵 測區56’當承載基台52抓取一片第一基板6〇(CF基板/TFT基板)後， 係沿著A路徑前進，第一基板6〇則被偵測區56偵測。偵測區56包 含至少一感測器58，感測器58可以設在位於A路徑的上方或下方， 感測器58係能偵測第一基板6〇上的標記62 ;本實施例中的感測器 58包括一電荷耦合元件影像感測器，電荷耦合元件影像感測器接收到 圓形圖案後，會將標記62傳送到辨識裝置66與標記68進行判斷。 ®辨識裝置66判斷標記68等於標記62後，承載基台52會繼續運送第 一基板70到一貼合區與一片第二基板(TFT基板/CF基板)貼合。如感 測器58無法偵測到標記62，或是辨識裝置66判斷標記62與標記68 不符者，則不允許該第一基板7〇與基板貼合。 以上實施例分別對偏光板與CF基板方向性檢查、偏光板與tft 基板方向性檢查、CF基板與TFT基板方向性檢查之實施例做一說明。 本發明之應用於液晶面板的方向性檢查裝置，能利用各種感測器 檢查偏光板上的標兄，藉以確認偏光板的方向，減少先前技術進料時 人為放置錯誤、混料導致CF、TFT偏光板放反，節省偏光板與CF、 9 200944869 TFT的重工人力成本’並提升偏光板的使用良率’以提升LCD產品的 整體良率及LCD產品的市場競爭力。 唯以上所述者，僅為本發明之較佳實施例而已，並非用來限定本 發明實施之範圍。故即凡依本發明申請範圍所述之形狀、構造、特徵 及精神所為之均等變化或修飾’均應包括於本發明之申請專利範圍内。 【圖式簡單說明】 第一圖係本發明之一實施例之實施示意圖。 第二圖係本發明之待測物與感測器及辨識裝置示意圖。 第三圖係本發明之另一實施例之實施示意圖。 © 第四圖係本發明之再一實施例之實施示意圓。 第五圖係本發明之又一實施例之實施示意圖。 第六圖係本發明之又一實施例之實施示意圓。 第七圖係本發明之又一實施例之實施示意圖。 第八圖係本發明之又一實施例之實施示意圖。 【主要元件符號說明】 12承載基台 14真空吸盤 16偵測區 ❹18感測器 20偏光板 22標記 24載台 26辨識裝置 28標記 30標記 32光學感測器 34標記 200944869 36辨識裝置 38光學感測器 40標記 42辨識裝置 44無線射頻辨識介面 46辨識裝置 48偏光板 50標記 52承載基台 © 54真空吸盤 56债測區 58感測器 60第一基板 62標記 64載台 66辨識裝置 68標記 70第一基板 ❹The above-mentioned reference to the shouting 18 can also be an optical ray or a radio frequency identification. Please refer to the fifth figure for an embodiment in which the optical sensor utilizes the penetration characteristics. When the optical sensor 32 is used, the mark 34 is a mark having a pass-through characteristic. Assuming that the optical sensing S 32 retests the mark 34, the value of the penetration characteristic of the mark 34 is used, and The training value is transmitted to the device 36. If the result is correct, then the polarizing plate 2〇 is sent to the bonding area. If the judgment result is incorrect, the bonding is stopped. The Yinglin LCD surface directionality inspection device will issue an alarm* and discharge the error light plate 20 for inspection. % Please refer to the sixth figure to illustrate the implementation of the sensor system-optical sensor 38 with the reflective characteristic side mark of the optical sensor, the mark 4 is a mark having a penetrating characteristic, and the optical sensor 38 is provided. After the mark 40, the reflection of the reflection characteristic on the mark 4 is used to the value, and the value is transmitted to the service device 42 for the (4) to (4) results are correct, and the polarizing plate 20 is sent to the bonding area. If the judgment result is incorrect, then If the directionality inspection device of the LCD panel will issue a warning and the wrong polarizing plate is used as the sensor's radio frequency identification interface 44, please refer to the seventh figure. Radio frequency identification: "1 side 44 series one reader" reader is connected to an identification device 46, and the polarizing plate 48 has a label of 50, when the mark on the polarizing plate 48 can be identified by the radio frequency identification. 200944869 After the face 44 is read and confirmed by the identification device 46, the polarizing plate 48 is sent to the bonding area. If the identification device 46 determines that the result is incorrect or the mark 5 is not read, the bonding is stopped and applied. The directionality inspection device of the liquid crystal panel issues a warning and discharges the erroneous polarizing plate 48 for inspection. The above embodiment describes an embodiment of the directional inspection of the polarizing plate and the CF substrate or the TFT substrate, and continues to explain the CF substrate and the TFT. An embodiment of the substrate directivity inspection. Please refer to the eighth figure. The directional inspection apparatus for a liquid crystal panel of the present invention includes a carrier base 52. The carrier base 52 has a vacuum chuck 54 on which the vacuum chuck 54 can be used. The stage 64 grabs a piece of the first substrate 60. The first substrate 60 is a CF substrate or a TFT substrate. The first substrate 60 is provided with a mark 62, a mark 62. In this embodiment, the mark on the first substrate 60. 62 is a circle The bearing base 52 reaches a bonding area via the A path, and a detecting area 56' is disposed on the A path. After the carrying base 52 grabs a first substrate 6 (CF substrate / TFT substrate), Advancing along the A path, the first substrate 6 is detected by the detection area 56. The detection area 56 includes at least one sensor 58, and the sensor 58 can be located above or below the A path, the sensor The 58 series can detect the mark 62 on the first substrate 6〇; the sensor 58 in this embodiment includes a charge coupled device image sensor, and after receiving the circular pattern, the charge coupled device image sensor will The mark 62 is transmitted to the identification device 66 and the mark 68 for determination. After the identification device 66 determines that the mark 68 is equal to the mark 62, the carrier base 52 continues to carry the first substrate 70 to a bonding area and a second substrate (TFT substrate / The CF substrate is bonded. If the sensor 58 cannot detect the mark 62, or the identification device 66 determines that the mark 62 does not match the mark 68, the first substrate 7〇 is not allowed to be attached to the substrate. Directional inspection of polarizing plate and CF substrate, directionality inspection of polarizing plate and tft substrate, CF The embodiment of the directionality inspection of the substrate and the TFT substrate is described. The directionality inspection device applied to the liquid crystal panel of the present invention can check the labeling brother on the polarizing plate by using various sensors, thereby confirming the direction of the polarizing plate and reducing the previous When the technology is fed, the man-made placement error, mixing causes CF, TFT polarizing plate to reverse, saving the heavy work cost of polarizing plate and CF, 9 200944869 TFT 'and improving the use rate of polarizing plate' to improve the overall yield of LCD products. And the market competitiveness of the LCD products. The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Therefore, any changes or modifications of the shapes, structures, features and spirits described in the scope of the present application should be included in the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS The first drawing is a schematic diagram of the implementation of an embodiment of the present invention. The second figure is a schematic diagram of the object to be tested and the sensor and the identification device of the present invention. The third drawing is a schematic view of the implementation of another embodiment of the present invention. The fourth drawing is a schematic circle of the implementation of still another embodiment of the present invention. Figure 5 is a schematic view showing the implementation of still another embodiment of the present invention. The sixth drawing is a schematic circle of implementation of still another embodiment of the present invention. Figure 7 is a schematic view showing the implementation of still another embodiment of the present invention. Figure 8 is a schematic view showing the implementation of still another embodiment of the present invention. [Main component symbol description] 12 bearing base 14 vacuum chuck 16 detection area ❹ 18 sensor 20 polarizing plate 22 mark 24 stage 26 identification device 28 mark 30 mark 32 optical sensor 34 mark 200944869 36 identification device 38 optical sense Detector 40 mark 42 identification device 44 radio frequency identification interface 46 identification device 48 polarizing plate 50 mark 52 bearing base © 54 vacuum cup 56 debt measuring area 58 sensor 60 first substrate 62 mark 64 stage 66 identification device 68 mark 70 first substrate❹