TW200412457A - Liquid crystal display having conductive pillar - Google Patents
Liquid crystal display having conductive pillar Download PDFInfo
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- TW200412457A TW200412457A TW92100302A TW92100302A TW200412457A TW 200412457 A TW200412457 A TW 200412457A TW 92100302 A TW92100302 A TW 92100302A TW 92100302 A TW92100302 A TW 92100302A TW 200412457 A TW200412457 A TW 200412457A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1341—Filling or closing of cells
Abstract
Description
200412457 五、發明說明（1) 發明所屬之枯術領域 本發明是有關於一種液晶顯示器，且較特別的是，有 關於一種液晶顯示器，可以藉由使用一個導電柱 (c ο n d u c 11 V e p i 1 1 a r )，以及在液晶注入孔的區域中具有 該導電柱，當增加上基板和下基板的導電性 (conductivity)時，使上基板（Upper substrate)和下基 ( lower s u b s t r a t e )之間保持距離，以達成均勻注入液 晶的目的。 先前拮術 一般來說’液晶顯示器在一個基板（substrate)中， 成形（f 〇 r m ) —個開關元件和一個透明像素電極 · (transparent pixel electrode)，並且成形一個與在另 一個透明基板中的像素電極（pixel electrode)相對立的 透明電極（transparent electrode)，並且結合這兩個電 極。接下來，注入液晶到這兩個基板之間（在下文中，這 兩個基板之間的距離稱為’’細胞間隙（c e 1 1 g a p ))，以根 據電場變化改變光學各向異性（optical anisotropy)。 接下來，藉由將光線傳送到液晶或是切斷傳送到液晶的光 線，液晶顯示器會顯示影像。因此可以比監視器或陰極射 線管（C R T )消耗更低功率，並且具有高亮度和小體積的優 勢’因此廣泛使用於各種目的。 針對這類型的液晶顯示器，有兩種不同型態的液晶顯β1 示态：一種是使用液晶面板（liquid crystal panel)的簡 易矩陣（s i m p 1 e m a t r i x )型，在一對基板之間注入液晶，200412457 V. Description of the Invention (1) Field of the Invention The invention relates to a liquid crystal display, and more particularly, to a liquid crystal display, which can be achieved by using a conductive post (c ο nduc 11 V epi 1 1 ar), and the conductive pillar is provided in the region of the liquid crystal injection hole. When the conductivity of the upper substrate and the lower substrate is increased, the distance between the upper substrate and the lower substrate is maintained. To achieve the purpose of uniformly injecting liquid crystal. In the past, generally speaking, 'a liquid crystal display is formed in a substrate, and a switching element and a transparent pixel electrode are formed, and one of the liquid crystal display and one in another transparent substrate are formed. A pixel electrode is a transparent electrode opposite to each other, and the two electrodes are combined. Next, liquid crystal is injected between the two substrates (hereinafter, the distance between the two substrates is called `` cell gap (ce 1 1 gap)) to change the optical anisotropy (optical anisotropy) according to the electric field change. ). Next, by transmitting light to the liquid crystal or cutting off the light transmitted to the liquid crystal, the liquid crystal display displays an image. Therefore, it can consume less power than a monitor or a cathode ray tube (C R T), and has the advantages of high brightness and small volume ', so it is widely used for various purposes. For this type of liquid crystal display, there are two different types of liquid crystal display β1 states: one is a simple matrix (sim p 1 e m a t r i x) type using a liquid crystal panel, injecting liquid crystal between a pair of substrates,
二：：10673pi f · ptd 第5頁 200412457 五、發明說明（2) 其中該·對基板在每一該對基板的對邊中，成形互相交叉的 電極；另一種是使用液晶面板的主動矩陣（a c t i v e m a t r i x )型，該液晶面板具有被選來當成該些基板的其中 一個的像素單元（pixel unit)的開關元件（switching element) 〇 在主動矩陣型的液晶顯示器中，有兩種不同類型的液 晶顯示器：一種是以垂直電場方式使用液晶面板的液晶顯 示器，其中用來選擇像素的電極組（electrode groups)分 別成形在上基板和下基板上（一般稱其為T N型主動矩陣液 晶顯示器）；另一種是以水平電場方式使用液晶面板的液 晶顯示器，其中用來選擇像素的電極組成形在該些基板的el 其中一個之上（一般稱其為I P S型液晶顯示器）。 液晶面板配置ΤΝ型主動矩陣液晶顯示器的方式是將一 個液晶元件，定位在一對基板之間可以扭轉9 0度的方向； 在上基板和下基板的外邊（outer side)上，沈積 (deposit)兩片偏光鏡（polarizers)，其中該些偏光鏡在 吸收軸（absorption axis)的方向安棑直交偏光 (cross-nicol)，並且使入射邊（incident side)偏光鏡的 吸收軸平行或垂直於鄰近吸收軸的液晶元件的調整層 (alignment layer)的摩擦方向（rubbing direction) 〇 在TN型主動矩陣液晶顯示器中，當電壓還未施加給液 晶顯示器層時，入射光（incident light)在入射邊的偏光® 鏡中會變成直線偏振光（straight-line polarized light)，而且該直線偏振光會根據液晶層的扭轉而分散開2: 10673pi f · ptd Page 5 200412457 5. Invention Description (2) The pair of substrates form electrodes that cross each other on the opposite side of each pair of substrates; the other is an active matrix using a liquid crystal panel ( activematrix) type, the liquid crystal panel has a switching element of a pixel unit selected as one of the substrates. Among the active matrix type liquid crystal displays, there are two different types of liquid crystal displays. : A liquid crystal display using a liquid crystal panel in a vertical electric field manner, in which electrode groups for selecting pixels are respectively formed on an upper substrate and a lower substrate (generally referred to as a TN type active matrix liquid crystal display); A liquid crystal display using a liquid crystal panel in a horizontal electric field manner, in which the electrode composition for selecting pixels is formed on one of the els of these substrates (generally referred to as an IPS liquid crystal display). The liquid crystal panel is configured with a TN active matrix liquid crystal display by positioning a liquid crystal element between a pair of substrates in a direction that can be rotated 90 degrees; on the outer side of the upper substrate and the lower substrate, depositing Two polarizers (polarizers), where the polarizers set cross-nicol in the direction of the absorption axis, and the absorption axis of the incident side polarizer is parallel or perpendicular to the adjacent The rubbing direction of the alignment layer of the liquid crystal element with the absorption axis. In a TN-type active matrix liquid crystal display, when a voltage has not been applied to the liquid crystal display layer, incident light is incident on the incident side. Polarized® mirrors become straight-line polarized light, and the linearly polarized light is dispersed by the twist of the liquid crystal layer
二’二'10673pif. ptd 第 6 頁 200412457 五、發明說明（3) 來。如果發射邊（emission side)的偏光鏡的傳輸軸 (transmission axis)與直線偏振光的方位角（azimuth)相 等，則所有的直線偏振光都會放射出去當成一個白色的影 像（這就是所謂的正常開放模式）。 此外，當電壓施加在其上時，用來顯示液晶元件軸平 立句定向方向（average oriented direction)的一個單位向 量方向（引向器（director))，會朝向基板表面的垂直方 向。而且直線偏振光從入射邊算起的方位角包持固定不 變，因此相等於發射邊偏光鏡的吸收軸，以變成一個黑影 像（請參考Industrial Committee在1991年所發表的"The Basic and Applications of Liquid Crystal·’）。 · 另一方面，在I PS型的液晶顯示器中，液晶顯示器成 形用來選擇像素的電極組，和在該些基板的其中一個基板 中，成形複數個電極佈線組（e 1 e c t r 〇 d e w i r i n g groups)。並且藉由施加一個鄰近電極（像素電極和導向電 極（oriented electrode))之間的電壓到該些基板上，切 換與該些基板表面平行的一個表面之内的液晶層。當電壓 還未提供時，調整偏光鏡以顯示黑影像（這就是所謂的正 常關閉模式）。 在I PS型液晶顯示器中的液晶顯示器層的元件，具有 與基板表面平行的相同方向（（homogeneous orientation)。而且當電壓未提供時，與基板平行的面板· 液晶層的引向器，變成與電極佈線方向平行，或是具有一 個特定的角度。然而，當電壓提供時，液晶層的引向器方Two'two'10673pif. Ptd page 6 200412457 V. Description of invention (3) If the transmission axis of the polarizer on the emission side is equal to the azimuth of linearly polarized light, all linearly polarized light will be emitted as a white image (this is the so-called normal opening mode). In addition, when a voltage is applied thereto, a unit direction (director) used to display the orientation direction of the liquid crystal element axis (director) will face the vertical direction of the substrate surface. Moreover, the azimuth angle of the linearly polarized light from the incident side is fixed, so it is equivalent to the absorption axis of the transmitting side polarizer to become a black image (please refer to "The Basic and Applications of Liquid Crystal · '). · On the other hand, in the I PS type liquid crystal display, the liquid crystal display is formed with electrode groups for selecting pixels, and one of the substrates is formed with a plurality of electrode wiring groups (e 1 ectr.dewiring groups). . And by applying a voltage between the adjacent electrodes (the pixel electrode and the oriented electrode) to the substrates, the liquid crystal layer within a surface parallel to the surfaces of the substrates is switched. When voltage is not yet supplied, adjust the polarizer to display a black image (this is the so-called Normal Off mode). The element of the liquid crystal display layer in the I PS type liquid crystal display has a homogeneous orientation parallel to the surface of the substrate. (When a voltage is not supplied, the panel parallel to the substrate and the director of the liquid crystal layer become The electrode wiring directions are parallel or have a specific angle. However, when the voltage is applied, the director of the liquid crystal layer
4!$〇673pif. ptd 第7頁 200412457 五、發明說明（4) 向變成與電極佈線方向垂直，而且當液晶層的引向器方 向，相較於電壓未提供時的引向器方向，傾斜到電極佈線 方向的45度時，具有提供電壓的液晶層，會像一個半波長 板（half wavelength plate) —樣，將偏振光震動表面的 方位轉動到9 0度。接下來，發射邊偏光鏡的傳輸軸具有與 偏振光震動表面相同的方位，以顯示一個白色影像。 僅管視界角（v i e w i n g a n g 1 e )改變，I P S型液晶顯示器 具有色彩（colors)或對比（contrast)的小變化，而且可以 實現寬範圍的角視場（angular field)(請參考日本專利早 期公開第9 4 - 5 0 5 2 4 7號）。 色彩過濾方法主要用在晝出各種液晶顯示器的全彩晝· 面。將對應於一個彩色畫面一點的像素分成三個，而且調 整每一單位像素中，對應於像是紅色、綠色、和藍色的三 原色的渡色鏡（color filters)。 本發明可以應用到各種上述的液晶顯示器。有關T N型 主動矩陣液晶顯示器的細節，將在以下詳細說明。 如上所述，配置TN型主動矩陣液晶顯示器（在下文中 簡稱為主動矩陣型液晶顯示器）的液晶顯示器元件（稱為液 晶面板）包括一個閘極線組（g a t e 1 i n e g r 〇 u p )和一個汲極 線組（d r a i η 1 i n e g r o u p )。其中，該閘極線組被安排在一 個透明基板的’ X ’方向，以驅動開關元件的閘極。藉由與 閘極線組相隔離，該汲極線組被安排在’ y ’方向，以驅動 開關元件的汲極。一般來說，薄膜電晶體（Th i n F i 1 m Transistor, T F T )可以被用來當成具代表性的開關元件。4! $ 〇673pif. Ptd Page 7 200412457 V. Description of the invention (4) The direction becomes perpendicular to the electrode wiring direction, and the direction of the director of the liquid crystal layer is tilted compared to the direction of the director when no voltage is provided. When the electrode wiring direction is 45 degrees, the liquid crystal layer with voltage applied will rotate the orientation of the polarized light vibration surface to 90 degrees like a half wavelength plate. Next, the transmission axis of the transmitting edge polarizer has the same orientation as the polarized light vibration surface to display a white image. Regardless of the change of the viewing angle (viewing angle 1 e), the IPS-type liquid crystal display has a small change in colors or contrast, and can achieve a wide range of angular field (see Japanese Patent Early Publication No. 9 4-5 0 5 2 4 7). The color filtering method is mainly used in the full-color day and day of various LCD displays. The pixels corresponding to one point of a color picture are divided into three, and in each unit pixel, color filters corresponding to three primary colors such as red, green, and blue are adjusted. The present invention can be applied to various liquid crystal displays described above. Details of the T N type active matrix liquid crystal display will be described in detail below. As described above, a liquid crystal display element (called a liquid crystal panel) configured with a TN type active matrix liquid crystal display (hereinafter referred to as an active matrix type liquid crystal display) includes a gate line group (gate 1 inegr 0up) and a drain line Group (drai η 1 inegroup). The gate line group is arranged on a transparent substrate in the direction of 'X' to drive the gate of the switching element. By being isolated from the gate line group, the drain line group is arranged in the 'y' direction to drive the drain of the switching element. Generally, a thin film transistor (Thi n F i 1 m Transistor, T F T) can be used as a representative switching element.
^ ΐ .11 〇673pi f. ptd 第8頁 200412457 五、發明說明（5) 此外，閘極線（g a t e 1 i n e )和汲極線（d r a i η 1 i n e )所 圍繞的每一區域，分別變成一個像素區域（P i x e 1 a r e a )。 而且在每個像素區域上，會成形一個透明像素電極。 藉由接收一個在閘極線中的掃描訊號，薄膜電晶體會 被開啟，而且影像訊號會從閘極線提供給像素電極。 閘極線和汲極線連接到具有數個積體電路 (Integrated Circuits， 1C)的捲帶式封裝（Tape Carrier Packages, T C P )。捲帶式封裝具有影像驅動積體電路和掃 瞄驅動積體電路。然而，因為捲帶式封裝.具有安裝在基板 外的驅動積體電路，藉由使基板的閘極線和汲極線的區域 交叉，和基板外的一個區域（一般稱為框架邊緣 ·! (frameborder))變大，會成形一個顯示區。因而違反降低 液晶顯示器模組外部大小的需求，其中該液晶顯示器模組 與液晶顯示器元件、背光（b a c k 1 i gh t )、和其他光學元件 整合在一起。 因此，為解決這個問題，所謂的覆晶（flip-chip)法 或是玻璃覆晶封裝（Chip-On-Glass， COG)法已經被發表出 來（日本專利早期公開第9 5 - 2 5 6 4 2 6號）。玻璃覆晶封裝法 將影像驅動積體電路和掃瞄驅動積體電路，直接安裝在基 板本身上，而不用使用捲帶式封裝構件，以執行一個液晶 顯示器元件的高密度安裝動作，並使其緊密結合。 習知技藝中，貼上一對液晶顯示器透明基板的方法包_ 括下列步驟：在由像素電極和開關元件所組成的一個第一 透明基板中，和在由與像素電極對立的一個電極所組成的^ ΐ .11 〇673pi f. ptd page 8 200412457 V. Description of the invention (5) In addition, each area surrounded by the gate line (gate 1 ine) and the drain line (drai η 1 ine) becomes a separate area. Pixel area (P ixe 1 area). A transparent pixel electrode is formed on each pixel area. By receiving a scanning signal in the gate line, the thin film transistor is turned on, and an image signal is supplied from the gate line to the pixel electrode. The gate and drain lines are connected to Tape Carrier Packages (TCP) with a number of Integrated Circuits (1C). The tape and reel package has an image driving integrated circuit and a scan driving integrated circuit. However, because of tape-and-reel packaging, there is a driver integrated circuit mounted outside the substrate, by crossing the area of the gate and drain lines of the substrate, and an area outside the substrate (commonly referred to as the frame edge ·! ( frameborder)) becomes larger, forming a display area. Therefore, the demand for reducing the external size of a liquid crystal display module is violated, wherein the liquid crystal display module is integrated with a liquid crystal display element, a backlight (b a c k 1 i ght), and other optical elements. Therefore, in order to solve this problem, a so-called flip-chip method or a Chip-On-Glass (COG) method has been published (Japanese Patent Early Publication No. 9 5-2 5 6 4 No. 26). The glass-on-chip packaging method mounts the image-driven integrated circuit and the scanning-driven integrated circuit directly on the substrate itself, without using a tape and reel packaging member, to perform a high-density mounting action of a liquid crystal display element and make it Tightly combined. In the conventional art, a method for attaching a pair of transparent substrates of a liquid crystal display includes the following steps: in a first transparent substrate composed of a pixel electrode and a switching element, and in a composed of an electrode opposite to the pixel electrode of
^!I10673pif. ptd 第 9 頁 200412457 五、發明說明（6) 一個第二透明基板中，將安排液晶的複數個層對齊。其 中，在第一和第二透明基板的顯示區外，成形一個密封線 (seal 1 i n e )和一個液晶注入孔。接下來，一個熱硬化性 (thermosetting)或紫外線（Ultra Violet， UV)設定環氧 樹脂（e ρ ο X y )會施加到密封線區。為了在密封線區中保持 相同的細胞間隙，環氧樹脂會與一個隔離物（s p a c e r )混 合，而且該第一透明基板會被貼在該第二透明基板上。在 使用一個紫外線燈對環氧樹脂加熱之後，硬化的環氧樹脂 會完成這個貼附的動作，而且液晶會經由液晶注入孔，注 入細胞間隙中。最後，再成形一個終結密封（e n d s e a 1 )， 就算完成液晶顯示器的製造工作。 （ 在此例中’因為壞氧樹脂直接與液晶接觸’液晶有可 能被污染（ρ 〇 1 1 u t e d )，所以會降低顯示功能的品質。同 時，需要執行一個去除空氣（deaerating)的處理，以除去 當環氧樹脂與隔離物混合時所產生的内部空氣氣泡。因為 當貼附透明基板時，環氧樹脂會散播，所以會引起在切割 透明基板時的諸多困難。此外，使用在液晶顯示器中的隔 離物是使用具有比細胞間隙的直徑還大的複數個圓球，因 此由聚合（ρ ο 1 y m e r )化學物所組成的圓球的外表、會被鑛 上一層像是銀的具有高導電性的材料，以提供電力給上基 板和下基板。 然而，因為圓球的直徑不相等，所以對維持一致的細< 胞間隙具有相當困難。而且因為隔離物的一部分存在於液 晶顯示器的顯示區中，所以隔離物也可以在製造光影期間^! I10673pif. Ptd page 9 200412457 V. Description of the invention (6) In a second transparent substrate, a plurality of layers of liquid crystals are aligned. Among them, a seal line and a liquid crystal injection hole are formed outside the display areas of the first and second transparent substrates. Next, a thermosetting or Ultra Violet (UV) setting epoxy resin (e ρ ο X y) is applied to the seal line area. In order to maintain the same cell gap in the seal line area, the epoxy resin is mixed with a spacer (s p c c r r), and the first transparent substrate is pasted on the second transparent substrate. After an epoxy lamp is used to heat the epoxy resin, the hardened epoxy resin will complete this attaching action, and the liquid crystal will be injected into the cell gap through the liquid crystal injection hole. Finally, a final seal (e n d s e a 1) is formed to complete the manufacturing of the liquid crystal display. (In this example, 'because the bad oxygen resin is in direct contact with the liquid crystal', the liquid crystal may be contaminated (ρ 〇 1 1 uted), so the quality of the display function will be reduced. At the same time, a deaerating process needs to be performed to Removes the internal air bubbles generated when the epoxy resin is mixed with the separator. Since the epoxy resin will spread when the transparent substrate is attached, it will cause many difficulties when cutting the transparent substrate. In addition, it is used in liquid crystal displays The spacer uses a plurality of spheres with a diameter larger than the diameter of the intercellular space, so the appearance of the sphere composed of polymerized (ρ ο 1 ymer) chemicals will be mined to a layer of silver, which has high conductivity. Materials to provide power to the upper and lower substrates. However, because the diameters of the spheres are not equal, it is quite difficult to maintain a consistent < cell gap. And because a part of the spacers is present on the LCD display Zone, so the spacer can also be used during light and shadow
:I0673pif. ptd 第10頁 200412457 五、發明說明（7) 散播開來。另外，安裝顯示區以佔據在液晶顯示器中僅可 能多的基板，也會有相當限制。 發明内容 為解決上述問題，本發明的目的是提供一種具有導電 柱的液晶顯示器，藉由在上基板和下基板之間保持距離， 增加上基板和下基板的導電性，以及控制均勻的液晶注入 速度，以獲得穩定的距離。 本發明的另一目的是提供一種具有導電柱的液晶顯示 器的製造方法，藉由在上基板和下基板之間保持距離，增 加上基板和下基板的導電性，以及控制均勻的液晶注入速 度，以獲得穩定的距離。 _ 為達成上述目的’根據本發明具有導電柱的液晶顯不 器包括一對透明基板、至少一個導電柱（P i 1 1 a r )、一個密 封料（s e a 1 )、和一個液晶。其中，該對透明基板互相對立 並且保持一特定的細胞間隙，而且具有一個顯示區和一個 密封區。該導電柱具有與在密封線中的細胞間隙相同的高 度，或是比細胞間隙還高的高度。該密封料被注入成形在 顯示區外的密封線。該液晶被注入到顯示區。 為達成上述的其他目的，根據本發明製造具有導電柱 的液晶顯示器的方法包括下列步驟：成形至少一個導電 柱，用來施加電力給兩透明基板中，至少一透明基板的上 部（upper part)中的一對透明基板；施加用來密封透明基β1 板的密封料，給該些透明基板對立邊的周圍除了液晶注入 孔的部分；將兩個透明基板以相反的方向附著在一起；經: I0673pif. Ptd Page 10 200412457 V. Description of Invention (7) It was spread. In addition, there are considerable limitations in installing a display area to occupy only as many substrates as possible in a liquid crystal display. SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a liquid crystal display with conductive pillars, by maintaining a distance between the upper substrate and the lower substrate, increasing the conductivity of the upper and lower substrates, and controlling uniform liquid crystal injection Speed to get a stable distance. Another object of the present invention is to provide a method for manufacturing a liquid crystal display with conductive pillars, by maintaining a distance between the upper substrate and the lower substrate, increasing the conductivity of the upper substrate and the lower substrate, and controlling a uniform liquid crystal injection rate, To get a stable distance. _ To achieve the above-mentioned object, a liquid crystal display device having a conductive pillar according to the present invention includes a pair of transparent substrates, at least one conductive pillar (P i 1 1 a r), a sealant (s e a 1), and a liquid crystal. The pair of transparent substrates are opposed to each other and maintain a specific cell gap, and have a display area and a sealing area. The conductive pillar has the same height as the cell gap in the seal line, or a height higher than the cell gap. The sealant is injected into a seal line outside the display area. The liquid crystal is injected into the display area. In order to achieve the other objects described above, the method for manufacturing a liquid crystal display with conductive pillars according to the present invention includes the following steps: forming at least one conductive pillar for applying power to two transparent substrates, and an upper part of at least one transparent substrate A pair of transparent substrates; applying a sealant for sealing the transparent base β1 plates, and excluding the liquid crystal injection hole around the opposite sides of the transparent substrates; attaching the two transparent substrates together in opposite directions;
m〇673pif.ptd 第 11 頁 200412457 五、發明說明（8) 由液晶注入孔，注射特定份量的液晶到透明基板和由密封 料所產生的透明基板内部細胞之間的導電柱中；以及密封 該液晶注入孔。 為讓本發明之上述和其他目的、特徵、和優點能明顯 易懂，下文特舉一較佳實施例，並配合所附圖式，作詳細 說明如下。 實施方式： 以下將參考所附繪圖，經由較佳實施例，詳細說明本 發明的細節。 第1圖繪示一個正視圖，用來說明根據本發明具有導 電柱的液晶顯示器的一個實施例，以及一個在A - A ’方向的 戴面圖。請參考第1 ( a )圖和第1 ( b )圖，液晶顯示器（1 0 0 ) 是由一個成形在一對透明基板（1 Oa， 1 Ob)中的一個顯示區 (2 0 )，和一個成形在透明基板邊緣的密封線（3 0 )所組成。 一個像素電極（1 1 )和一個薄膜電晶體（圖中未纟會示）以及一 個開關元件，成形在一對透明基板的下基板（1 0 b)中。一 個對立於像素電極（11)的對立電極（opposite electrode) (1 3 )，成形在上基板（1 0 a )中。 藉由成形像素電極和對立電極，電場會改變注入到該 對透明基板（1 0 a， 1 0 b )之間的液晶的排列，因此可以切斷 或是傳送光線以顯示影像。 使用在顯示區（20)的電極可以是銦錫氧化物（indium · tin oxide)，而且可以使用扭轉向列型（Twist Nematic， T N )液晶。密封線（3 0 )的區域是用來密封該對透明電極的m〇673pif.ptd Page 11 200412457 V. Description of the invention (8) A liquid crystal injection hole is used to inject a specific amount of liquid crystal into a conductive pillar between the transparent substrate and the cells inside the transparent substrate produced by the sealing material; and sealing the Liquid crystal injection hole. In order to make the above and other objects, features, and advantages of the present invention comprehensible, a preferred embodiment is hereinafter described in detail with reference to the accompanying drawings. Embodiments: The details of the present invention will be described in detail through preferred embodiments with reference to the accompanying drawings. FIG. 1 shows a front view for explaining an embodiment of a liquid crystal display having a conductive pillar according to the present invention, and a face-to-face view in the direction A-A '. Please refer to Fig. 1 (a) and Fig. 1 (b). The liquid crystal display (100) is formed by a display area (20) formed in a pair of transparent substrates (10a, 1 Ob), and A sealing line (30) formed on the edge of the transparent substrate. A pixel electrode (1 1), a thin film transistor (not shown in the figure) and a switching element are formed in a lower substrate (1 0 b) of a pair of transparent substrates. An opposite electrode (1 3) opposite to the pixel electrode (11) is formed in the upper substrate (1 0a). By forming the pixel electrode and the counter electrode, the electric field will change the arrangement of the liquid crystal injected between the pair of transparent substrates (10a, 10b), so the light can be cut off or transmitted to display the image. The electrode used in the display area (20) may be indium tin oxide (indium tin oxide), and a twisted nematic (TN) liquid crystal may be used. The area of the sealing line (30) is used to seal the pair of transparent electrodes.
5! a〇673pif. ptd 第 12 頁 200412457 五、發明說明（9) 密封料（3 5 )所施加的地方。 在本發明中，圓柱或其他形狀的導電柱成形在顯示區 (2 0 )和密封區（3 0 )中，以使細胞間隙在液晶顯示器中具有 相同特定距離的間隔。保持細胞間隙具有相同特定距離間 隔的原因是藉由在像素中充滿液晶，以保持正常的光學路 徑。導電柱（5 0 )具有像是導電聚合化合物的導電材料，以 使得上基板（1 〇 a )和下基板（1 0 b )可以電性接觸。導電柱 (5 0 )的高度與細胞間隙的高度相同，或是比細胞間隙還高 一點，導電柱並且完全地黏著到上基板和下基板。密封線 (30)成形在透明基板（l〇a， 10b)的邊緣上，並且以預定大 小的間隔’組成用來注入液晶的液晶注入孔（2 5 )。一般需 要執行一個去除空氣處理，以除去當經由液晶注入孔 (2 5 )，以不均勻速度注入液晶所產生的空氣氣泡。為避免 執行這個處理，在液晶注入孔（2 5 )中會成形一個層級，以 均勻化（e ν e η )液晶的注入速度。因此可以避免用不同速度 注入液晶所產生的空氣氣泡。 然而，這個方法更加需要一種處理，在貼上基板和下 基板之後，成形液晶注入孔。為省略這個處理，在液晶注 入孔成形的地方，也會造出用來維持細胞間隙的導電柱 (5 0 )，以避免液晶注入時產生空氣氣泡。在液晶注入孔 (2 5 )中成形的導電柱（5 0 )，可以以正常的速度注入液晶， 避免產生空氣氣泡，並且在注入液晶之後，方便密封液晶· 注入孔。 藉由在透明基板（1 0 a， 1 0 b )上，沈積導電性的聚合化5! A〇673pif. Ptd page 12 200412457 V. Description of the invention (9) Where the sealant (3 5) is applied. In the present invention, a cylindrical or other shaped conductive pillar is formed in the display area (20) and the sealing area (30), so that the cell gap has the same specific distance interval in the liquid crystal display. The reason to keep the cell gaps at the same specific distance is to maintain the normal optical path by filling the pixels with liquid crystals. The conductive pillar (50) has a conductive material like a conductive polymer compound, so that the upper substrate (10a) and the lower substrate (10b) can be in electrical contact. The height of the conductive pillar (50) is the same as the height of the cell gap, or higher than the cell gap, and the conductive pillar is completely adhered to the upper substrate and the lower substrate. The sealing line (30) is formed on the edge of the transparent substrate (10a, 10b), and a liquid crystal injection hole (25) for injecting liquid crystal is formed at a predetermined interval. It is generally necessary to perform an air removal process to remove air bubbles generated when the liquid crystal is injected at a non-uniform velocity through the liquid crystal injection hole (25). To avoid performing this process, a layer is formed in the liquid crystal injection hole (2 5) to uniformize (e ν e η) the liquid crystal injection speed. Therefore, air bubbles generated by injecting the liquid crystal at different speeds can be avoided. However, this method more requires a process of forming a liquid crystal injection hole after attaching the substrate and the lower substrate. In order to omit this treatment, a conductive post (50) for maintaining the intercellular space is also made where the liquid crystal injection hole is formed, so as to avoid air bubbles when the liquid crystal is injected. The conductive pillar (50) formed in the liquid crystal injection hole (25) can inject liquid crystal at a normal speed to avoid air bubbles. After the liquid crystal is injected, the liquid crystal and the injection hole can be easily sealed. By depositing conductive polymerisation on a transparent substrate (1 0 a, 1 0 b)
y〇673pif.ptd 第 13 頁 200412457 五、發明說明（ίο) 合物成形導電柱（50)，接下來再使用具有光敏電阻器 (photoresistor)的光刻（photo - etching)處理。導電柱 (5 0 )使上基板和下基板具有導電性。另外，藉由使用導電 柱（5 0 )，可以使該對透明基板（1 0a， 1 Ob)的細胞間隙保持 一致。藉由摻雜（d 〇 p i n g )導電材料，可以使聚合化合物具 導電性。 在習知技藝中，當球狀隔板被安置在顯示區中，以維 持細胞間隙時，像是環氧樹脂的黏著材料，會被加到隔板 上，以固定隔板的位簟。在此例中，當電壓施加到液晶並 且產生熱量時，環氧樹脂會惡化而污染液晶。污染物 (ρ ο 1 1 u t a n t)會降低液晶的電阻係數（r e s i s t i v i t y )，以 降低施加到液晶兩端的電應力（e 1 e c t r i c a 1 s t r e s s )，進 而影響容量和可靠度（rel iabi 1 i ty)。導電柱（50)是在製 造透明基板的步驟中，未使用黏著劑經由光刻處理而成形 的。因此可以避免液晶受到污染而惡化的問題。安置在顯 示區（2 0 )的導電柱（5 0 )可以被安置在像素間隔之間的交點 上，而且可以用比像素數目還少的數目，對應到液晶顯示 器的每個像素上。同時，導電柱（5 0 )也可以成形在密封線 (3 0 )中，只有液晶顯示器（1 0 0 )邊緣的密封料所施加的地 方。如果需要的話，安置在密封線（30)中的導電柱（50)的 直徑，也可以大於安置在顯示區中的導電柱的直徑。 第2圖繪示一個截面圖，用來說明根據本發明具有導· 電柱的液晶顯示器顯示區的一個像素。請參考第2圖，導 電柱（5 0 )是以相等的間隔，成形在下基板（1 0 b )的一部分y〇673pif.ptd page 13 200412457 V. Description of the invention (ίο) The compound forms a conductive pillar (50), and then a photo-etching process with a photoresistor is used. The conductive pillar (50) makes the upper substrate and the lower substrate conductive. In addition, by using conductive pillars (50), the cell gaps of the pair of transparent substrates (10a, 1 Ob) can be kept consistent. By doping (d o p i n g) a conductive material, the polymer compound can be made conductive. In the conventional art, when a spherical spacer is placed in the display area to maintain the intercellular space, an adhesive material such as epoxy resin is added to the spacer to fix the position of the spacer. In this example, when a voltage is applied to the liquid crystal and heat is generated, the epoxy resin deteriorates and contaminates the liquid crystal. Contaminants (ρ ο 1 1 u t a n t) will reduce the resistivity of the liquid crystal (r e s i s t i v i t y) to reduce the electrical stress (e 1 e c t r i c a 1 s t r e s s) applied to the two ends of the liquid crystal, which will affect the capacity and reliability (rel iabi 1 i ty). The conductive pillar (50) is formed by a photolithography process without using an adhesive in the step of manufacturing a transparent substrate. Therefore, the problem that the liquid crystal is contaminated and deteriorated can be avoided. The conductive pillars (50) arranged in the display area (20) can be arranged at the intersections between the pixel intervals, and can use a smaller number than the number of pixels to correspond to each pixel of the liquid crystal display. At the same time, the conductive pillar (50) can also be formed in the sealing line (30), where only the sealing material on the edge of the liquid crystal display (100) is applied. If necessary, the diameter of the conductive pillar (50) disposed in the sealing line (30) may also be larger than the diameter of the conductive pillar disposed in the display area. FIG. 2 is a cross-sectional view illustrating a pixel of a display area of a liquid crystal display having a conductive column and a conductive column according to the present invention. Please refer to Figure 2. The conductive pillars (50) are formed on a part of the lower substrate (1 0b) at equal intervals.
l〇673pif.ptd 第 14 頁 200412457l〇673pif.ptd page 14 200412457
200412457 五、發明說明（12) 小的寬度。此外，也可以使用黏著劑，將導電柱（5 〇 )成形 在透明基板（1 〇 a， 1 0 b )外。導電柱（5 0 )也可以成形在液晶 注入孔中。在成形導電柱（5 0 )之後，可以進行摩擦處理 (rubbing process) ° 在第二步驟（ST 1 1 0 )中，一個熱硬化性或紫外線設定 環氧樹脂會注入到密封區（3 0 )。此時，因為導電柱（5 0 )可 以維持細胞間隙，所以並不需要注入環氧樹脂（7 0 )和隔板 的混合物。因此，可以省略去除在混合環氧樹脂（7 0 )與隔 板時所產生的空氣氣泡的處·理。 此時，密封線或是密封區會避免環氧樹脂（7 〇 )被施加 到液晶注入孔所成形的地方。 暑 在第三步驟（ST 120)中，在注入環氧樹脂（7〇)之後， 該對透明基板（1 0 a， 1 0 b )會面對面互相黏著在一起，而且 使用紫外線燈將其加熱’硬化環氧樹脂（7 〇 )，以完成整個 過程。此時，如果有環氧樹脂（7 〇 )注射到液晶顯示器 (100)之外’則切斷注射出的環氧樹脂（70)的工作是相當 重要的。 在第四步驟（ST 1 3 0 )中，經由液晶注入孔，液晶被注 入到該些透明基板（1 0 a， 1 0 b )之間。接下來，液晶注入孔 會被密封’以完成液晶顯示器的製造工作。 有關液晶的注入工作，液晶是經由液晶注入孔，利用 與與外部空氣之間的壓力差，注入到顯示區（2 〇 )中。 馨 根據本發明的液晶顯示器包括：一個密封線，用來將 ，個上基板黏著到一個下基板；以及複數個導電柱，該些200412457 V. Description of the invention (12) Small width. Alternatively, the conductive pillar (50) may be formed outside the transparent substrate (10a, 10b) using an adhesive. The conductive pillar (50) can also be formed in the liquid crystal injection hole. After forming the conductive pillar (50), a rubbing process can be performed. In the second step (ST1 1 0), a thermosetting or UV-setting epoxy resin is injected into the sealing area (3 0). . At this time, because the conductive column (50) can maintain the intercellular space, it is not necessary to inject a mixture of epoxy resin (70) and a separator. Therefore, it is possible to omit the processing and removal of air bubbles generated when the epoxy resin (70) is mixed with the partition plate. At this time, the sealing line or the sealing area will prevent the epoxy resin (70) from being applied to the place where the liquid crystal injection hole is formed. In the third step (ST 120), after the epoxy resin (70) is injected, the pair of transparent substrates (10 a, 10 b) will adhere to each other face to face, and they will be heated using an ultraviolet lamp. Epoxy resin (70) is hardened to complete the entire process. At this time, if an epoxy resin (70) is injected outside the liquid crystal display (100) ', it is important to cut off the injected epoxy resin (70). In the fourth step (ST 1 3 0), liquid crystal is injected between the transparent substrates (1 0a, 1 0b) through the liquid crystal injection hole. Next, the liquid crystal injection hole will be sealed 'to complete the manufacturing of the liquid crystal display. With regard to the liquid crystal injection operation, liquid crystal is injected into the display area (20) by using a pressure difference between the liquid crystal injection hole and external air. The liquid crystal display according to the present invention includes: a sealing line for adhering an upper substrate to a lower substrate; and a plurality of conductive posts, the
ai l：D673pif. Ptd 第16頁 200412457 五、發明說明（13) 導電柱是在顯示區和液晶所注入的液晶注入孔中。因此， 根據本發明可以保持上基板和下基板之間穩定的細胞間 隙，並且藉由成形具有導電性的聚合化合物的導電柱，使 上基板和下基板具有導電性。在將上基板黏著到下基板之 後，當注入液晶到顯示區中時，利用與外部的壓力差，顯 示區會被減壓（d e c 〇 m p r e s s e d ) ’以經由一個注入液晶的處 理注入液晶。在液晶注入期間，密封一個密封料以控制液 晶的注入速度，可以避免在減壓的顯示區釋放之後，密封 料經由液晶注入孔，過度滲透（p e r m e a t i n g )到液晶顯示器 的顯示區中。 雖然本發明已以一較佳實施例揭露如上，然其並非用翁 以限定本發明，任何熟習此技藝者，在不脫離本發明之精 神與範圍内，當可作些許之更動與潤飾，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為準。ai l: D673pif. Ptd page 16 200412457 V. Description of the invention (13) The conductive pillar is in the display area and the liquid crystal injection hole into which the liquid crystal is injected. Therefore, according to the present invention, a stable cell gap between the upper substrate and the lower substrate can be maintained, and the upper substrate and the lower substrate can be made conductive by forming a conductive pillar of a conductive polymer compound. After the upper substrate is adhered to the lower substrate, when the liquid crystal is injected into the display area, the display area is decompressed by using a pressure difference from the outside (d e c om m p r e s s e d) ′ to inject the liquid crystal through a process of injecting liquid crystal. During the liquid crystal injection, a sealing material is sealed to control the injection speed of the liquid crystal, which can prevent the sealing material from penetrating into the display area of the liquid crystal display via the liquid crystal injection hole after the pressure-reduced display area is released. Although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and decorations without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.
乓;:_673pi f. ptd 第17頁 200412457 圖式簡單說明 第1圖繪示一個正視圖，用來說明根據本發明具有導 電柱的液晶顯示器的一個實施例，以及一個在A - A ’方向的 戴面圖。 第2圖繪示一個截面圖，用來說明根據本發明具有導 電柱的液晶顯示器顯示區的一個像素。 第3圖繪示一個流程圖，用來說明根據本發明具有導 電柱的液晶顯示器製造方法的一個實施例。 圖式標示說明： 10a :上基板 1 Ob :下基板 11 像 素 電極 13 對 立 電極 20 顯 示 區 25 液 晶 注入孔 30 密 封 35 密 封 料 50 導 電 柱 100 •液晶顯不為Ping pong;: _ 673pi f. Ptd page 17 200412457 Brief Description of Drawings Figure 1 shows a front view for explaining an embodiment of a liquid crystal display with conductive pillars according to the present invention, and a Face map. Fig. 2 is a cross-sectional view illustrating a pixel of a display area of a liquid crystal display having a conductive pillar according to the present invention. FIG. 3 is a flowchart illustrating an embodiment of a method for manufacturing a liquid crystal display having a conductive pillar according to the present invention. Description of the diagrams: 10a: upper substrate 1 Ob: lower substrate 11 pixel electrode 13 opposite electrode 20 display area 25 liquid crystal injection hole 30 seal 35 seal material 50 conductive column 100 • liquid crystal display is not
42 l〇673pi f. ptd 第18頁42 l〇673pi f. Ptd p. 18
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020010073376A KR20030042641A (en) | 2001-11-23 | 2001-11-23 | Liquid crystal display having conductive pillar |
Publications (2)
| Publication Number | Publication Date |
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| TW200412457A true TW200412457A (en) | 2004-07-16 |
| TWI226496B TWI226496B (en) | 2005-01-11 |
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| TW92100302A TWI226496B (en) | 2001-11-23 | 2003-01-08 | Liquid crystal display having conductive pillar |
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| KR (1) | KR20030042641A (en) |
| AU (1) | AU2002356454A1 (en) |
| TW (1) | TWI226496B (en) |
| WO (1) | WO2003044594A1 (en) |
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| JP4579890B2 (en) | 2005-11-15 | 2010-11-10 | 三星電子株式会社 | Display device and manufacturing method thereof |
| JP5856758B2 (en) | 2011-05-23 | 2016-02-10 | ピクストロニクス，インコーポレイテッド | Display device and manufacturing method thereof |
| TWI485501B (en) * | 2012-04-19 | 2015-05-21 | Innocom Tech Shenzhen Co Ltd | Display device and manufacturing method of the same |
| US9897796B2 (en) | 2014-04-18 | 2018-02-20 | Snaptrack, Inc. | Encapsulated spacers for electromechanical systems display apparatus |
| CN107632438B (en) | 2017-09-29 | 2021-01-15 | 京东方科技集团股份有限公司 | Preparation method of display panel, display panel and display device |
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| JPS55113024A (en) * | 1979-02-26 | 1980-09-01 | Hitachi Ltd | Liquid crystal display element |
| JPH04153625A (en) * | 1990-10-18 | 1992-05-27 | Fujitsu Ltd | Liquid crystal display panel |
| JPH05165060A (en) * | 1991-12-17 | 1993-06-29 | Sony Corp | Liquid crystal display device |
| JP3073627B2 (en) * | 1993-06-14 | 2000-08-07 | 東京エレクトロン株式会社 | Heat treatment equipment |
| JPH07114030A (en) * | 1993-10-19 | 1995-05-02 | Optrex Corp | Liquid crystal display device |
| JPH09146126A (en) * | 1995-11-22 | 1997-06-06 | Canon Inc | Liquid crystal display and information transmission device |
| KR200222471Y1 (en) * | 1997-11-06 | 2001-06-01 | 김순택 | A liquid crystal display |
| KR100552287B1 (en) * | 1998-05-04 | 2006-05-16 | 삼성전자주식회사 | Manufacturing Method Of Liquid Crystal Display |
| JP2001305556A (en) * | 2000-04-20 | 2001-10-31 | Internatl Business Mach Corp <Ibm> | Liquid crystal display device and its manufacturing method |
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2001
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2002
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| AU2002356454A1 (en) | 2003-06-10 |
| KR20030042641A (en) | 2003-06-02 |
| WO2003044594A1 (en) | 2003-05-30 |
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