TWI448437B - Apparatus and method for forming a glass substrate with increased edge stability - Google Patents
Apparatus and method for forming a glass substrate with increased edge stability Download PDFInfo
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- TWI448437B TWI448437B TW096114911A TW96114911A TWI448437B TW I448437 B TWI448437 B TW I448437B TW 096114911 A TW096114911 A TW 096114911A TW 96114911 A TW96114911 A TW 96114911A TW I448437 B TWI448437 B TW I448437B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
- C03B17/064—Forming glass sheets by the overflow downdraw fusion process; Isopipes therefor
Description
本發明一般係關於形成玻璃基板之裝置，以及特別是關於裝置玻璃流量之設計標準。The present invention is generally directed to apparatus for forming glass substrates, and in particular to design criteria for device glass flow.
液晶顯示器(LCD)之玻璃顯示板使用於範圍加大，由手持個人數位助理器至計算機監視器至電視顯示器。這些應用需要玻璃片或基板，其具有無缺陷表面及一致性厚度。LCD由至少數個這些薄的(例如<0.7mm)玻璃片所構成，其密封在一起以形成包封。玻璃顯示板特別是LCD顯示板市場成長已導致使用其製造所使用玻璃基板需求增加。Liquid crystal display (LCD) glass display panels are used in a wide range of applications, from handheld personal digital assistants to computer monitors to television displays. These applications require a glass sheet or substrate with a defect free surface and consistent thickness. The LCD is constructed of at least a few of these thin (e.g., <0.7 mm) glass sheets that are sealed together to form an envelope. The growth of glass display panels, particularly LCD display panels, has led to increased demand for glass substrates used in their manufacture.
一項製造光學顯示器之玻璃為藉由溢流向下拉引處理法。Dockerty之美國第3338696及3682609號專利揭示出融合向下抽拉處理過程，該處理過程包含將熔融玻璃流過成形楔形物通常稱為等管邊緣或堰，這些專利在此加入作為參考之用。熔融玻璃流過等管會聚成形表面，以及分離流動再結合於頂點處，或根部，其中兩個會聚成形表面會合以形成玻璃帶狀物。因而，與成形表面接觸之玻璃位於玻璃片之內側部份，以及玻璃帶狀物外部表面並無接觸。拉引滾軸位於等管根部下游以及捕捉帶狀物邊緣部份以調整帶狀物離開等管之速率，以及因而 有助於決定出最終片狀物之厚度。當玻璃帶狀物由等根部下降通過拉引滾軸時，其冷卻形成堅硬具有彈性之玻璃帶狀物，其可再加以切割以形成各別之玻璃片或基板。A glass for manufacturing an optical display is a pull-down process by overflow. Dockerty, U.S. Patent Nos. 3,338,696 and 3,682,609, the disclosure of each of each of each of each of each of each of each of each of each of each of each of each of each of each of each of each of each of each of each of each of each of each of each of each of each of each of each of each of each of each of each of each of The molten glass flows through the equal tube converging forming surface, and the separating flow is recombined at the apex, or the root, where the two converging forming surfaces meet to form a glass ribbon. Thus, the glass in contact with the forming surface is located on the inner portion of the glass sheet and the outer surface of the glass ribbon is not in contact. Pulling the roller downstream of the root of the tube and capturing the edge portion of the ribbon to adjust the rate at which the ribbon exits the tube, and thus Helps determine the thickness of the final sheet. As the glass ribbon descends from the roots through the draw rolls, it cools to form a rigid, resilient glass ribbon that can be further cut to form individual glass sheets or substrates.
由於顯示器玻璃需求增加，玻璃基板製造商面臨增加產量之需求。一種方式為按裝額外的抽拉裝置。不過，該選擇包含相當程度之資本投資。最具價格競爭性之方法為增加任何抽拉裝置之玻璃流量。不過，流量增加通常需要增加等管之尺寸(例如等管寬度)以保持穩定邊緣流動。抽拉處理過程本身為多個處理條件之微妙平衡，以及這些處理條件隨著各別之抽拉變化。因而，簡單地增加玻璃流量通常充滿困難。除此，不但玻璃基板需求增加，同時顯示器尺寸亦穩定地增加。此需要更大基板片狀物維持有效之經濟規模。因而，抽拉裝置需要較大(例如較寬)以及亦增加玻璃流量。所需要設計選項為對已有抽拉裝置提供增加玻璃流量之能力而不會超出抽拉處理過程之穩定界限，或由較小穩定抽拉裝置提高規模在適當處放置較大抽拉機器。Glass substrate manufacturers are facing increasing demand for output due to increased demand for display glass. One way is to install an additional pull device. However, this option involves a considerable amount of capital investment. The most price competitive method is to increase the glass flow of any drawing device. However, an increase in flow typically requires an increase in the size of the tubes (e.g., equal tube width) to maintain a stable edge flow. The pull process itself is a delicate balance of multiple processing conditions, and these process conditions vary with each pull. Thus, simply increasing the glass flow is often full of difficulties. In addition, not only the demand for glass substrates is increased, but also the size of the display is steadily increasing. This requires a larger substrate sheet to maintain an effective economic scale. Thus, the drawer requires a larger (e.g., wider) and also increases glass flow. The design option required is to provide the existing draw unit with the ability to increase the flow of glass without exceeding the stability limit of the draw process, or to increase the size by a smaller stable pull device to place a larger draw machine where appropriate.
本發明一項實施例包含一種形成玻璃片之裝置，其包含具有一對向下傾斜成形表面部份之成形楔形物會聚於成形楔形物之根部以及在高於根部具有垂直高度L，邊緣導引器沿著成形表面垂直邊緣部份延伸，以及包含腹 板與成形表面連通以截取以及薄化G磅/小時-英吋玻之璃流動於腹板上，以及其中G/L3 為大於0.0017磅/小時/英吋4 。優先地，G/L3 為大於0.002磅/小時/英吋4 。An embodiment of the invention comprises a device for forming a glass sheet comprising a shaped wedge having a pair of downwardly inclined shaped surface portions that converge at a root of the shaped wedge and having a vertical height L above the root, edge guiding Extending along a vertical edge portion of the forming surface, and including a web in communication with the forming surface for intercepting and thinning G lb/hr-ying glass flow on the web, and wherein G/L 3 is greater than 0.0017 lbs /hour / mile 4 . Preferentially, G / L 3 is greater than 0.002 lbs / hr / 4 inches.
在另一實施例中，揭示出成形玻璃基板之方法，其包含流動熔融玻璃於成形楔形物上，其包含一對向下傾斜成形表面表面會聚於成形楔形物之底部以及沿著該處形成玻璃抽拉線，以及具有垂直高度為L英吋於抽拉線及水平面之間，該水平面與傾斜成形表面部份頂部相交，邊緣導引器包含腹板部份與成形表面連通作為截取以及薄化G磅/小時-英吋之玻璃流動於腹板上。In another embodiment, a method of forming a glass substrate is disclosed that includes flowing molten glass onto a shaped wedge that includes a pair of downwardly sloped shaped surface surfaces that converge at the bottom of the shaped wedge and form a glass therethrough a drawing line having a vertical height of L inches between the drawing line and a horizontal plane intersecting the top of the inclined forming surface portion, the edge guide including the web portion communicating with the forming surface for intercepting and thinning G pounds per hour - the glass of the mile flows on the web.
本發明其他特性及優點將揭示於下列詳細說明中，熟知此技術者可由該說明立即地了解部份，或藉由實施下列詳細說明，申請專利範圍以及附圖之內容而明瞭。Other features and advantages of the invention will be apparent from the description and appended claims.
本發明之特性及優點將詳細地揭示於下列詳細說明中，熟知此技術者能夠藉由實施在此所說明包含下列詳細說明，申請專利範圍，以及附圖而立即地了解。The features and advantages of the invention are disclosed in the following detailed description.
人們了解先前之一般性說明以及下列本發明實施例詳細說明在於提供一個概要或架構以了解本發明申請專利範圍之原理及特性。所包含附圖在於提供更進一步了解本發明，以及在此加入發明說明書之一部份。附圖顯示出本發明不同的實施例以及隨同詳細說明作為解釋本發明之原理及操作。It is to be understood that the following general description and the following detailed description of the embodiments of the invention The accompanying drawings are included to provide a further understanding of the invention, and are incorporated herein by reference. The drawings illustrate various embodiments of the invention, and are in the
現在對本發明優先實施例詳細加以說明，其範例顯示於附圖中。儘可能地，在全部附圖中相同的參考數字表示相同的或類似元件。The preferred embodiments of the present invention will now be described in detail, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numerals reference
過去關於成形楔形物設計之經驗已傾向包含反覆式處理過程。成形楔形物已試驗地設計，製造，以及操作以評估其處理能力。不穩定之成形楔形物，例如由成形楔形物抽拉出玻璃片邊緣至邊緣寬度隨著時間改變，其將需要對設計調整以及製造另一成形楔形物。該處理過程持續到適當的組合設計特性達成。儘管如此，邊緣穩定性已證實為脆弱的，由於成形楔形物幾何形狀隨著時間改變，如同為不同的處理過程變數例如為溫度分佈，玻璃流動變化等。成形楔形物本身處於非常惡劣條件，例如玻璃成形所需要高溫將促使成形楔形物隨著時間下垂或潛變，以及熔融玻璃傾向緩慢地將製造成形楔形物之材料通常為鋯石溶解。因而特別的成形楔形物之性能已證實對處理條件為靈敏的，其將導致邊緣穩定之變化。當需要增加成形楔形物尺寸時，該情況特別容易發生。Past experience with shaped wedge designs has tended to include a repetitive process. Formed wedges have been experimentally designed, fabricated, and operated to evaluate their processing capabilities. An unstable shaped wedge, such as the edge of the glass sheet drawn from the shaped wedge to the edge width as a function of time, will require adjustment of the design and fabrication of another shaped wedge. This process continues until the appropriate combination of design features is achieved. Nevertheless, edge stability has proven to be fragile, as the shaped wedge geometry changes over time, as is the case for different process variables such as temperature distribution, glass flow variation, and the like. The shaped wedge itself is under very harsh conditions, such as the high temperatures required for glass forming will cause the forming wedge to sag or creep over time, and the molten glass tends to slowly dissolve the material from which the shaped wedge is made, typically zircon. Thus the performance of a particular shaped wedge has proven to be sensitive to processing conditions which will result in a change in edge stability. This situation is particularly prone to occur when it is desired to increase the size of the shaped wedge.
一項對平板顯示器之限制為形成大片初始玻璃作為顯示器基板之能力。雖然第一代玻璃片尺寸價例如寬度為小於1米，目前生產能夠形成寬度為數米之初始玻璃。One limitation to flat panel displays is the ability to form large pieces of initial glass as the display substrate. Although the first generation of glass sheets, for example, have a width of less than one meter, it is currently produced to form an initial glass having a width of several meters.
為了達成該尺寸增加，顯示器製造商必需提高成形楔形物之尺寸，特別是寬度。過去，其通常由先前一代成 形楔形物開始進展。此成形楔形物再使用作為後續下一代成形楔形物之樣板，其由先前一代尺寸按比例增加。In order to achieve this increase in size, display manufacturers must increase the size, particularly the width, of the shaped wedge. In the past, it was usually made by the previous generation. The wedges began to progress. This shaped wedge is then used as a template for subsequent next generation shaped wedges that are scaled up from previous generation dimensions.
儘管如此，甚至於當呈現出相當良好的邊緣穩定性之成形楔形物形成下一代設計之基準，按照比例通常為失敗的。例如，人們發現只增加成形楔形物之尺寸(寬度)無法增加邊緣導引器腹板部份之尺寸而產生不穩定之邊緣流動，或至少對處理過程為靈敏之邊緣流動。因而，在能夠提供流動穩定邊緣較大下一代成形楔形物被製造以及加以放置成為生產之前，需要製造數個成形楔形物，同時改變特定設計參數(例如寬度，通道幾何形狀等)。如人們了解，該成形楔形物設計之隨意方式為並不想要的。Nonetheless, even when forming wedges that exhibit fairly good edge stability form the basis for next-generation designs, scaling is often a failure. For example, it has been found that merely increasing the size (width) of the shaped wedge does not increase the size of the edge portion of the edge guide to create an unstable edge flow, or at least an edge flow that is sensitive to the process. Thus, prior to being able to provide a flow stable edge, the next generation of shaped wedges are manufactured and placed into production, requiring the fabrication of several shaped wedges while changing specific design parameters (e.g., width, channel geometry, etc.). As is known, the random way of designing the shaped wedge is undesirable.
使用本發明方法不但能夠允許第一成形楔形物之製造，該成形楔形物作為向下溢流成形具有穩定邊緣流動之玻璃片，部署由原先成形楔形物按比例之不同尺寸成形楔形物變為容易，其亦產生穩定的邊緣流動。The use of the method of the invention not only allows for the manufacture of a first shaped wedge which, as a downwardly overflowing shaped glass sheet having a stable edge flow, facilitates the formation of wedges of different sizes in proportion to the original shaped wedge. It also produces a stable edge flow.
依據本發明初始玻璃片向下溢流之裝置10顯示於圖1中。如圖1-2所示，裝置10包含含有向上敞開溝槽14之成形楔形物12，該溝槽由壁板部份16界限於其縱向側邊，其終止於為相對縱向地延伸溢流堰或唇狀物18之上側範圍處。堰或唇狀物18連通相對成形楔形物12之外側片狀物成形表面。如圖所示，提供成形楔形物12具有連通唇狀物18之一對實質上垂直成形表面部份20，以及一對向下傾斜會聚表面部份22，其終止於水平較低 頂點或根部24處形成直的玻璃抽拉線。Apparatus 10 for initial glass sheet downflow in accordance with the present invention is shown in FIG. As shown in Figures 1-2, the apparatus 10 includes a shaped wedge 12 having an upwardly open groove 14 defined by the wall portion 16 bounding its longitudinal sides, terminating in a relatively longitudinally extending weir. Or at the upper side of the lip 18. The weir or lip 18 communicates with the outer sheet forming surface of the opposite shaped wedge 12. As shown, the forming wedge 12 is provided with a pair of substantially vertical forming surface portions 20 of the communicating lip 18 and a pair of downwardly sloping converging surface portions 22 which terminate at a lower level. A straight glass draw line is formed at the apex or root 24.
熔融玻璃26藉由連通溝槽14之傳輸通道28供應至溝槽。供料至溝槽14可為單端部，或假如需要情況下為雙端部。一對限制阻隔物30提供於溢流唇狀物18上方相鄰於溝槽14每一端部以導引熔融玻璃26自由表面32溢流通過溢流唇狀物18作為分離玻璃流，以及向下相對之成形表面部份20，22到達根部24，在該處分離之玻璃流動如虛線所示會聚形成初始表面之玻璃34帶狀物。帶狀物因而藉由拉引滾軸加以抽拉。The molten glass 26 is supplied to the trench by the transfer passage 28 of the communication groove 14. The feed to the groove 14 can be a single end or, if desired, a double end. A pair of restriction barriers 30 are provided above the overflow lip 18 adjacent each end of the channel 14 to direct the molten glass 26 free surface 32 to overflow through the overflow lip 18 as a separate glass stream, and down The opposing forming surface portions 20, 22 reach the root portion 24 where the separated glass flow converges as shown by the dashed lines to form a glass 34 ribbon of the initial surface. The ribbon is thus pulled by the pull roller.
在成形楔形物每一縱向端部提供一對邊緣導引器或導正器，使得邊緣導引器沿著楔形物每一側之每一縱向端部的垂直邊緣延伸。因而，每一成形楔形物提供四個邊緣導引器，每一成形楔形物之角隅處一個邊緣導引器。邊緣導引器36包含兩個主要部份，其包含突出邊緣表面部份38，其沿著其垂直範圍與楔形物之成形表面部份的縱向端部相交，以及腹板或填角部份40，其延伸並連通突出邊緣表面部份38與一個向下傾斜會聚表面部份22之間。A pair of edge directors or guides are provided at each longitudinal end of the shaped wedge such that the edge director extends along a vertical edge of each longitudinal end of each side of the wedge. Thus, each shaped wedge provides four edge guides, one edge guide at the corner of each shaped wedge. The edge guide 36 includes two major portions including a projecting edge surface portion 38 that intersects the longitudinal end of the shaped surface portion of the wedge along its vertical extent, and a web or fillet portion 40. It extends and communicates between the protruding edge surface portion 38 and a downwardly inclined converging surface portion 22.
腹板部份40沿著點A與B之間交線42與邊緣表面部份38相交，以及亦沿著沿著點A與C之間交線44與傾斜表面部份38相交。因而，相交線44斜向地向下由點A延伸至點C向內地沿著成形楔形物10根部或頂點24與突出邊緣表面部份相隔距離d。同樣地，相交線42在邊緣表面部份38上由點A向下延伸至點B，點C可位於 通過根部之水平平面中。不過，在另一實施例中，點C位於水平面之上方或下方。腹板部份40之底部邊緣46由點B延伸至點C。底部邊緣可為直線或非直線。The web portion 40 intersects the edge surface portion 38 along the line of intersection 42 between points A and B, and also intersects the inclined surface portion 38 along the line of intersection 44 between points A and C. Thus, the intersection line 44 extends obliquely downward from point A to point C inwardly along the forming wedge 10 root or apex 24 by a distance d from the protruding edge surface portion. Similarly, the intersection line 42 extends from point A down to point B on the edge surface portion 38, and point C can be located Pass through the horizontal plane of the root. However, in another embodiment, point C is above or below the horizontal plane. The bottom edge 46 of the web portion 40 extends from point B to point C. The bottom edge can be straight or non-linear.
人們先前注意到依據本發明實施例，楔形物構件10包含一組多個邊緣導引器。特別地，一對邊緣導引器36提供於成形楔形物之每一側邊，每一垂直角落處具有一個，使得兩個該邊緣導引器相對地位於成形楔形物之每一縱向端部處。It has previously been noted that the wedge member 10 comprises a plurality of edge guides in accordance with an embodiment of the present invention. In particular, a pair of edge guides 36 are provided on each side of the shaped wedge, one at each vertical corner such that two of the edge directors are located opposite each longitudinal end of the shaped wedge .
沿著會聚成形表面22之邊緣部份向下流動熔融玻璃被沿著與傾斜成形表面22相交對角線被腹板40攔截。向下流動之片狀物之邊緣部份最先地被傾斜成形表面，以及邊緣導引器36腹板部份40所支撐。The molten glass flowing down the edge portion of the converging forming surface 22 is intercepted by the web 40 along a diagonal line intersecting the inclined forming surface 22. The edge portion of the downwardly flowing sheet is firstly inclined by the forming surface and supported by the web portion 40 of the edge guide 36.
腹板部份40提供潤溼長度，其水平方向大於截取之成形表面22的長度，以及能夠得到可利用玻璃片之寬度最大化。除此，腹板部份40展開或使流過其上面之玻璃變薄，因而在離開腹板部份底部邊緣之前熔融玻璃流動縱向邊緣厚度實際地減小。The web portion 40 provides a wetting length that is greater in the horizontal direction than the length of the cut forming surface 22 and that maximizes the width of the available glass sheet. In addition, the web portion 40 unfolds or thins the glass flowing therethrough, so that the thickness of the longitudinal edge of the molten glass flow is substantially reduced before leaving the bottom edge of the web portion.
流過以及接觸腹板部份40玻璃之線性寬度顯示於圖2中以及以距離d表示，其為邊緣導引器之邊緣表面部份38沿著根部24的向內距離，如先前所定義。該玻璃流之流動速率以G表示，其單位為磅/小時每英吋由邊緣表面部份38至點C之距離。由於一般情況具有四個邊緣導引器以及四個腹板部份，G通常表示為流過所有腹板部份之平均流量。The linear width of the glass flowing through and contacting the web portion 40 is shown in Figure 2 and is indicated by the distance d, which is the inward distance of the edge surface portion 38 of the edge director along the root 24, as previously defined. The flow rate of the glass stream is expressed in G and is expressed in pounds per hour per inch from the edge surface portion 38 to point C. Since there are four edge guides and four web sections in general, G is usually expressed as the average flow through all web sections.
如上述所說明，由本發明使用融合處理過程之玻璃製造系統製造出玻璃基板必需具有均勻的厚度以使用於類似平板顯示器之裝置。為了確保該情況發生，我們進行研究以及決定出一種方式以提昇融合處理過程以製造出該玻璃基板。特別地，我們發現藉由管理流過成形裝置10之熔融玻璃26質量分佈將對玻璃基板之品質/屬性產生直接的影響。因而，本發明目標係關於管理流過成形裝置10之熔融玻璃26流量。As explained above, the glass substrate manufactured by the present invention using the fusion process must have a uniform thickness for use in a device similar to a flat panel display. To ensure this happens, we conducted research and decided a way to enhance the fusion process to make the glass substrate. In particular, we have found that by managing the mass distribution of the molten glass 26 flowing through the forming apparatus 10, it will have a direct impact on the quality/attribute of the glass substrate. Accordingly, the present invention is directed to managing the flow of molten glass 26 flowing through the forming apparatus 10.
人們了解有效融合處理過程產生具有固定厚度大面積玻璃帶狀物34。人們亦要求玻璃帶狀物寬度在抽拉過程中並不會改變，即帶狀物邊緣為穩定的。我們發現假如流過腹板部份40之頂部表面52(即沿著距離d)之玻璃流量與會聚成形表面22頂部50之垂直高度三次方L3 的比值即G/L3 保持等於或大於0.0017磅/小時/英吋4 ，優先地等於或大於0.002磅/小時/英吋4 將達成邊緣穩定。It is known that an efficient fusion process produces a large area glass ribbon 34 having a fixed thickness. It is also required that the width of the glass ribbon does not change during the drawing process, i.e. the edge of the ribbon is stable. We found that if the top surface portion 40 of the flow rate of glass flow through the web 52 (i.e. along the distance d) with the top of the converging forming surfaces 22 L ratio of the vertical height of the cube 50, i.e. 3 G / L 3 maintained greater than or equal to 0.0017 Pounds per hour / mile 4 , preferably equal to or greater than 0.002 lbs / hr / mile 4 will achieve edge stability.
人們了解雖然上述所列出條件有用於在融合向下抽拉處理過程中建立邊緣(帶狀物寬度)穩定性，保持施加於運行通過腹板部份表面上玻璃層為較小之張力亦為有益的。力量包含固定玻璃於腹板表面上之黏接力量以及(重力以及拉引滾軸35)施加之力量，其拉引玻璃離開邊緣導引器(腹板)表面。這些力量嘗試拉引玻璃片離開邊緣導引器以及能夠促使玻璃片寬度變化。因而需要黏接力量至少大於施加的外力，以及優先地顯著地大於所施加外力。通常，邊緣導引器由耐火材料例如鉑所構成以承受 高的玻璃成形溫度(通常超過1000℃)。人們發現使用來製造顯示器裝置之矽酸鹽玻璃潤溼鉑為不良的，其中玻璃會完全地由鉑表面分離。除此，矽酸鹽玻璃高度地潤溼於一些陶瓷材料例如礬土或鋯石上。因而，其將有益於利用陶瓷材料例如礬土及/或鋯石至少塗覆貴金屬(例如鉑)腹板部份以增加黏接力量。可加以變化地，腹板部份可為成形楔形物整體部份(例如為單體，其中其能夠鑄造或機器加工為成形楔形物之部份。在一些情況中腹板部份可製造為分離陶瓷組件以及後者連結至成形楔形物。機器加工腹板部份為成形楔形物整體或單體部份之優點為減少使用昂貴的貴金屬，以及消除在成形楔形物與會聚成形表面相交處之表面擾動，該相交會使玻璃流動產生擾動。在特定實施例中，邊緣導引器，以及特別是邊緣導引器之腹板部份，及/或成形楔形物可部份地或全部地使用耐火材料製造出，如2004年12月30日申請之美國第60/640686號專利申請案中，該專利之說明在此加入作為參考。這些材料範例包含鋯石，磷酸釔礦形式材料，磷酸釔礦穩定之鋯石形式材料，以及磷酸釔礦穩定之鋯石形式材料加上磷酸釔礦形式材料，或其混合物，如先前所提及參考文獻所界定以及說明。It is understood that although the conditions listed above are used to establish edge (ribbon width) stability during the fusion down draw process, the tension applied to the glass layer running over the surface of the web portion is also small. benefit. The force consists of the bonding force of the fixed glass on the web surface and the force exerted by (gravity and pull roller 35) which pulls the glass away from the edge guide (web) surface. These forces attempt to pull the glass away from the edge guide and can cause the width of the glass to change. It is therefore necessary that the bonding force is at least greater than the applied external force and, preferentially, significantly greater than the applied external force. Typically, the edge guide is constructed of a refractory material such as platinum to withstand High glass forming temperature (usually over 1000 ° C). It has been found that bismuth silicate glass used to make display devices is poor in wetting platinum, in which the glass is completely separated from the platinum surface. In addition, the tellurite glass is highly wetted onto some ceramic materials such as alumina or zircon. Thus, it would be beneficial to coat at least the precious metal (e.g., platinum) web portion with a ceramic material such as alumina and/or zircon to increase the bonding force. Alternatively, the web portion can be an integral part of the shaped wedge (for example, a single body in which it can be cast or machined into a portion of a shaped wedge. In some cases the web portion can be fabricated as a separate ceramic The assembly and the latter are joined to the forming wedge. The machined web portion has the advantage of forming the integral or single portion of the wedge to reduce the use of expensive precious metals and to eliminate surface disturbances at the intersection of the shaped wedge and the converging forming surface, This intersection can cause disturbance to the flow of the glass. In a particular embodiment, the edge guide, and in particular the web portion of the edge guide, and/or the shaped wedge can be partially or wholly made of refractory material. The disclosure of the patent application is hereby incorporated by reference in its entirety by reference in its entirety in its entirety in the the the the the the the the the the the the a zircon form material, and a zirconium phosphate stabilized zircon form material plus a yttrium phosphate ore form material, or a mixture thereof, as defined by the references mentioned above And instructions.
當然業界熟知此技術者了解具有邊緣穩定流動之現有成形邊緣(即穩定邊緣至邊緣寬度)，本發明將容易地能夠按比例製造出較大成形楔形物。即，後續成形楔形物可依據下列公式加以設計：G=Gref (L/Lref )3 (1)其中G 為流過後續成形楔形物腹板部份之流量，以及L為後續成形楔形物會聚成形表面之垂直高度。Gref 及Lref 為現在或先前成形楔形物之相同參數。如先前所說明，G通常代表成形楔形物腹板部份之平均流量。Of course, those skilled in the art are aware of existing shaped edges with edge-stable flow (i.e., stable edge to edge width), and the present invention will readily be able to scale larger shaped wedges. That is, the subsequent shaped wedge can be designed according to the following formula: G = G ref (L / L ref ) 3 (1) where G is the flow through the web portion of the subsequent shaped wedge, and L is the subsequent shaped wedge Converging the vertical height of the formed surface. G ref and L ref are the same parameters of the current or previously formed wedge. As previously stated, G generally represents the average flow of the web portion of the shaped wedge.
業界熟知此技術者了解本發明能夠作各種變化及改變而並不會脫離本發明之精神及範圍。因而預期本發明所提供各種變化及改變均含蓋於下列申請專利範圍及同等物範圍內。It is to be understood by those skilled in the art that the present invention is capable of various modifications and changes without departing from the spirit and scope of the invention. It is intended that the various modifications and variations of the invention are intended to be included within the scope of the appended claims.
10‧‧‧玻璃片向下溢流裝置10‧‧‧ glass sheet downflow device
12‧‧‧成形楔形物12‧‧‧ Forming wedges
14‧‧‧溝槽14‧‧‧ trench
16‧‧‧壁板部份16‧‧‧ siding part
18‧‧‧堰或唇狀物18‧‧‧堰 or lip
20‧‧‧成形表面部份20‧‧‧Formed surface part
22‧‧‧會聚表面部份22‧‧‧ Converging surface parts
24‧‧‧根部24‧‧‧ Root
26‧‧‧熔融玻璃26‧‧‧Solid glass
28‧‧‧通道28‧‧‧channel
30‧‧‧阻隔物30‧‧‧Barriers
32‧‧‧自由表面32‧‧‧Free surface
34‧‧‧玻璃帶狀物34‧‧‧glass ribbon
36‧‧‧邊緣導引器36‧‧‧Edge guide
38‧‧‧突出邊緣表面部份38‧‧‧ Highlight the edge surface portion
40‧‧‧腹板部份40‧‧‧ web part
42、44‧‧‧交線42, 44‧‧ ‧ intersection line
46‧‧‧底部邊緣46‧‧‧ bottom edge
50‧‧‧頂部50‧‧‧ top
52‧‧‧頂部表面52‧‧‧ top surface
第一圖為本發明一項實施例之部份斷面透視圖，其顯示出裝置一端，其包含融合抽拉玻璃帶狀物之成形楔形物。The first figure is a partial cross-sectional perspective view of an embodiment of the invention showing one end of the apparatus comprising a shaped wedge that incorporates a drawn glass ribbon.
第二圖為第一圖成形楔形物之放大透視圖，其顯示出邊緣導引器以及包含邊緣導引器之腹板部份。The second figure is an enlarged perspective view of the first shaped wedge showing the edge guide and the web portion including the edge guide.
10‧‧‧玻璃片向下溢流裝置10‧‧‧ glass sheet downflow device
12‧‧‧成形楔形物12‧‧‧ Forming wedges
14‧‧‧溝槽14‧‧‧ trench
16‧‧‧壁板部份16‧‧‧ siding part
18‧‧‧堰或唇狀物18‧‧‧堰 or lip
20‧‧‧成形表面部份20‧‧‧Formed surface part
22‧‧‧會聚表面部份22‧‧‧ Converging surface parts
24‧‧‧根部24‧‧‧ Root
26‧‧‧熔融玻璃26‧‧‧Solid glass
28‧‧‧通道28‧‧‧channel
30‧‧‧阻隔物30‧‧‧Barriers
32‧‧‧自由表面32‧‧‧Free surface
34‧‧‧玻璃帶狀物34‧‧‧glass ribbon
36‧‧‧邊緣導引器36‧‧‧Edge guide
38‧‧‧突出邊緣表面部份38‧‧‧ Highlight the edge surface portion
40‧‧‧腹板部份40‧‧‧ web part
Claims (9)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US79591406P | 2006-04-28 | 2006-04-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW200806590A TW200806590A (en) | 2008-02-01 |
| TWI448437B true TWI448437B (en) | 2014-08-11 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW096114911A TWI448437B (en) | 2006-04-28 | 2007-04-26 | Apparatus and method for forming a glass substrate with increased edge stability |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2013149A1 (en) |
| JP (1) | JP5281569B2 (en) |
| KR (1) | KR20090016564A (en) |
| CN (1) | CN101495417B (en) |
| TW (1) | TWI448437B (en) |
| WO (1) | WO2007130298A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100889949B1 (en) * | 2008-04-10 | 2009-03-20 | 주식회사 엠엠테크 | Method for slimming glass and slimming system of the same |
| KR101722914B1 (en) * | 2011-03-11 | 2017-04-05 | 생-고뱅 세라믹스 앤드 플라스틱스, 인코포레이티드 | Refractory object, glass overflow forming block, and process for glass object manufacture |
| KR101266699B1 (en) | 2011-03-31 | 2013-05-28 | 아반스트레이트 가부시키가이샤 | Glass sheet production device, glass sheet production method, and molded body |
| JP5724552B2 (en) * | 2011-04-01 | 2015-05-27 | 日本電気硝子株式会社 | Thin glass manufacturing equipment |
| KR20140112539A (en) | 2012-01-11 | 2014-09-23 | 생-고뱅 세라믹스 앤드 플라스틱스, 인코포레이티드 | Refractory object and process of forming a glass sheet using the refractory object |
| JP5850332B2 (en) * | 2012-03-09 | 2016-02-03 | 日本電気硝子株式会社 | Thin glass forming apparatus and method |
| US8794034B2 (en) | 2012-05-29 | 2014-08-05 | Corning Incorporated | Apparatus for forming glass with edge directors and methods |
| WO2014030649A1 (en) * | 2012-08-24 | 2014-02-27 | 日本電気硝子株式会社 | Device for manufacturing sheet glass, and method for manufacturing sheet glass |
| EP3262011A4 (en) | 2015-02-24 | 2018-08-01 | Saint-Gobain Ceramics&Plastics, Inc. | Refractory article and method of making |
| KR102633704B1 (en) | 2015-11-18 | 2024-02-05 | 코닝 인코포레이티드 | Glass ribbon forming apparatus and method |
| US9840431B2 (en) * | 2016-01-11 | 2017-12-12 | Corning Incorporated | Methods and apparatuses for supporting forming bodies of glass forming apparatuses |
| TWI750256B (en) * | 2016-11-22 | 2021-12-21 | 美商康寧公司 | Forming bodies for forming continuous glass ribbons and glass forming apparatuses comprising the same |
| JP7261797B2 (en) | 2017-11-22 | 2023-04-20 | コーニング インコーポレイテッド | Apparatus with edge guide member for shaping glass ribbon |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3451798A (en) * | 1966-04-04 | 1969-06-24 | Corning Glass Works | Sheet glass edge control device |
| US3537834A (en) * | 1968-08-07 | 1970-11-03 | Corning Glass Works | Maintaining sheet glass width |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3541798A (en) * | 1969-04-18 | 1970-11-24 | Harry Schnabel Jr | Method and structure for shoring a lateral face of an excavation |
| JPS63151633A (en) * | 1986-12-15 | 1988-06-24 | Hoya Corp | Device for producing plate glass |
| WO2003055813A1 (en) * | 2001-12-21 | 2003-07-10 | Corning Incorporated | Process for producing sheet glass by the overflow downdraw fusion process |
| WO2006091389A2 (en) * | 2005-02-24 | 2006-08-31 | Corning Incorporated | Apparatus and method for making a glass sheet |
| KR101224666B1 (en) * | 2005-02-24 | 2013-01-21 | 코닝 인코포레이티드 | Method and apparatus for making a glass sheet |
| US7409839B2 (en) * | 2005-04-29 | 2008-08-12 | Corning Incorporated | Method and apparatus for making a glass sheet |
-
2007
- 2007-04-26 JP JP2009507780A patent/JP5281569B2/en not_active Expired - Fee Related
- 2007-04-26 WO PCT/US2007/010043 patent/WO2007130298A1/en active Application Filing
- 2007-04-26 EP EP07756018A patent/EP2013149A1/en not_active Withdrawn
- 2007-04-26 KR KR1020087029242A patent/KR20090016564A/en not_active Application Discontinuation
- 2007-04-26 CN CN2007800234021A patent/CN101495417B/en not_active Expired - Fee Related
- 2007-04-26 TW TW096114911A patent/TWI448437B/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3451798A (en) * | 1966-04-04 | 1969-06-24 | Corning Glass Works | Sheet glass edge control device |
| US3537834A (en) * | 1968-08-07 | 1970-11-03 | Corning Glass Works | Maintaining sheet glass width |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009535290A (en) | 2009-10-01 |
| TW200806590A (en) | 2008-02-01 |
| KR20090016564A (en) | 2009-02-16 |
| JP5281569B2 (en) | 2013-09-04 |
| CN101495417A (en) | 2009-07-29 |
| EP2013149A1 (en) | 2009-01-14 |
| CN101495417B (en) | 2012-09-26 |
| WO2007130298A1 (en) | 2007-11-15 |
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