201219199 J / υυριι 六、發明說明： 【發明所屬之技術領域】 本發明涉及用於製備光學片的裝置及使用此裝置的 光學片製備方法。更具體地，本發明涉及使用軟模的捲對 捲式（roll to roll type)光學片製備裝置和使用此裝置的光 學片製備方法，在所述裝置中，安裝了在預塗布階段在軟 模和塗布輥間具有更大接觸面積的塗布裝置，因此可實現 比現有技術更高的産率，且能夠有效的加注塗布液並去除 氣泡。 【先前技術】 用於液晶顯示器（LCD)中的背光單元包括促進光折 射和擴散的光學片，以提高光的均勻度和亮度。這些光學 ^可包括擴散光的擴散片、層叠在擴散片上表面以聚集擴 散的光並將光傳遞至液晶顯示器面板的棱鏡片，和保護擴 散片和稜鏡片的保護片。 通常’為了增强這些光學片的光擴散能力和亮度以及 其匕光學性質’對這些光學片的表面進行預定的圖案化處 理。最近，已使用捲對捲式設備大規模進行光學片的圖案 化。 捲對捲式設備可分為使用圖案化金屬模的硬模式設 備和使用膜狀模的軟模式設備。 讯硬模式設備難以形成半球形微透鏡圖案，然而軟模式 備可有利地形成包括微透鏡圖案的各種圖案。 然而，在軟模式設備的情况下，如果為了提高光學片 4 201219199 J/ioopif 的產率而使模高速移動，則在圖案内會産生氣泡，或會出 現因塗布液的不充分注入而導致不規則的圖案形狀，從而 導致對産品品質的嚴重損害。特別地，對於半球形微透鏡 圖案’會進一步加重氣泡的産生。為了解决這些問題，大 多數軟模式設備在進行主塗布前使用塗布液加注單元進 預塗布。 τ 韓國專利第887340號公開了使用至少一個擠壓輥部 分加注塗布液的方法，所述擠壓輥通過將聚合物樹脂擠壓 至膜的圖案中來加注聚合物樹脂。圖1圖示了使用擠壓輥 的光學片製備裝置。如圖1所示，常規光學片製備裝置的 結構使得圖案化的軟模20在接觸一部分主輥丨〇〇期間通過 主輥100傳送。當軟模2〇沿主輥1〇〇的外圍旋轉時，塗布 液加注裝置110將塗布液加注到軟模2〇的圖案中。此操作 相當於主塗布，且通常，對軟模2〇進行預塗布，隨後進行 主塗布。在完成使用塗布液加注裝置110的主塗布後，將 軟模20與基膜10結合。具體地，與主輥1〇〇接合的第一 觀120將基膜1〇壓到軟模2〇上，以使它們彼此結合，隨 後’使所得結合膜11硬化並沿主輥100傳送。再將硬化後 膜分離為軟模20和圖案化的光學膜12。在此情况下，通 過第二輥130將軟模20從圖案化的光學膜12剝離，並隨 後傳送至預塗布裝置A。預塗布裝置A由導輥140、141 和H2組成，以將軟模2〇傳送至主塗布裝置，即塗布液加 左裳置110和與各個導輥14〇、141和142接合以預塗布軟 換20的塗布輥150、151和152。設置塗布輥150、151和 201219199 152以接收來自樹脂進料容器16〇、161和162的塗布液。 在軟模20被預塗布裝置A預塗布後，軟模2〇通過主輥1〇〇 旋轉，從而被傳送至塗布液加注裝置110，並隨後進行二 次塗布，即主塗布。 然而，使用擠壓輥的上述方法提供的軟模在每個擠壓 輥基底上僅具有小單位接觸面積，因此需要額外安裝多個 擠壓輥以改進産率。使用多個輥會增加設備尺寸，以及在 塗布期間因輥暴露於外界導致外部物質污染的風險。 【發明内容】 因此，鑒於以上問題而進行本發明，且本發明的一個 目的是提供用於製備光學片的裝置。 根據本發明的一個方面，本發明的以上和苴它目的可 =過提供㈣麟光料的裝置來完成，所制於製備光 予片的I置包括圖案化的軟模；主輥，所述主輥被配置 ,所述軟模’並起到傳送已注有塗布_軟模和與所述 二模結合的基膜的作用；第—報，所述第—輥與所述主報 接口，並起到將所述基膜壓到所述已注有塗布液的軟模上 从使所述基膜和所述軟模彼此結合的作用；第二輥，所 第=輕將已通過所述第，的所述結合膜分離為所述軟模 口=化的光學膜；和預塗布裝置’所述預塗布裝置對從 戶括至少—個導姊至卜健雜，所述導^ =模傳达至主塗布裝置’所述塗布輕在接收來自樹 4容器的塗布液時通過其旋轉預塗布所述軟模，且龙中曰 20121¾ =述導Μ與所布輕⑽㈣案交轉列且彼此不相接 所述塗布輪可以與所述導__旋轉方向旋轉。 所述塗布輥的旋轉方向可與所述導輥的旋轉方向相 反。 至少一個導輥可包括兩個或更多個導輥。 所述導輥可包括彼此相鄰的第一導輥和第二導輕，且 所述塗布親可位於所述第—導輥和所述第二導輕之間。 糾述光學片製備裝置可進-步包括在所述第一輥和 所述苐二輥之間的硬化裝置。 、、所述光學#製備裝置可進—步包括控制述正被傳 送的膜的張力的張力控制輥。 一為讓本發明之上述特徵和優點能更明顯易懂，下文特 舉實施例，並配合所附圖式作詳細說明如下。 【實施方式】 以下，將更詳細地描述根據本發明優選實施方式的处 f和操作。在以下贿中，—些部分與前述現有技術基i 相同’因此即使在不同的關中，也用相_關標記表 圖2為根據本發明一個示例性實施方式的光學片製備 I置的不意圖。如圖所示，設置光學片製備裝置以使得軟 模20在接觸主輥1〇〇期間被主輥1〇〇旋轉並傳送。軟模 2〇具有圖案’且通常由樹脂材料製成。圖案的形狀無特別 限制’且常用於光學片的各種圖案均可。例如，可使用半 201219199 球形微透鏡圖案、兩面凸形圖案、棱鏡形圖案、半擔_ 圖案和無規則凸凹圖案，然而圖案的形狀不必限制於此。 軟模20接觸全部或僅接觸-部分主輕100,且也可旋 轉以接觸另-個導輥或張力控制輕以確保其容易旋轉。 當軟模20沿主輕1〇〇的外圍旋轉時，塗布液被加注 到圖案中。在本發明巾’在軟模2G已通過預塗布裝置a 預塗布，並進行氣泡去除操作後，用主塗布裝置進行軟模 20的主塗布。 、 …與現有技術中用預塗布裝置的擠壓輥以捲對捲方式 進行預塗布不同，在本發明中，設置預塗布裝置A使得導 輥與塗布輥以鑛#圖案交替排列且彼此不相接合。 在不例性實施方式中，本發明的預塗布裝置八包括導 親140、141和142和塗布親15〇和⑸。導輥14〇、141 和142起到將軟模2〇傳送至主塗布裝置的作用。塗布親 150和151起到在接收來自樹脂進料容器16〇和的塗 布液時通過其旋轉預塗布軟模20的作用。雖然圖2顯示了 3個導報’但導輥的數量不限於此。在示例性實施方式中， 預塗布裝置A可包括兩個或更多個導觀。例如，可使用2 至5個導親。導輥14〇、141和142不僅起到提供具有適合 張力的軟模20以傳送軟模20 ’且將已通過預塗布裝置A 的軟模20導至主塗布裝置的作用。 塗布輥ISO和151可位於導輥14〇、141和142之間， 以不與導報U0、⑷和142相接合。具體地，位於軟模 2〇 一側的導輥140、141和142與位於軟模2〇另一側的塗 8 201219199 J / 1 jupif r51父替_排列。在此情况下，可傳送軟模20 二…\ Θ 4 a)所不的殘狀。或者，當將導報140、141 妒握？〇以〇及塗布觀150和151排列為具有相同中 心軸時， 二雜大^t圖4 (b)所示的Z字形途徑傳送。在考慮全 下，適當地確定導輥刚、141和142以及 大。150和151的位置’以使各個塗布輥的接觸面積最 古例性實施方式中’塗布報可以與導輥相同的旋轉 η疋、或可以與導輥相反的旋轉方向旋轉。圖3 (a) T H錢的_方向與輪的旋轉方向相反的情况 P ’塗布輥的旋轉方向相#於軟模的傳送方向）。圖3⑴ 說明了塗布輥與導輥具有相同旋轉方向的情况（即， _旋轉方向與軟模的傳送方向相反）。從以上描述可明 白’控制塗布報的旋轉方向和速率可進-步增加塗布輥和 軟模間的接觸面積1此，可有效地將足量的塗布液加到 f表面’而不增加塗布輕的數量且不需要額外的設備，使 得與使用大量塗布輥相比産率提高。 圖5為將使用擠壓輥的常規方法獲得的接觸面積· (圖5 (a))與根據本發明方法獲得的接觸面積(圖$ ⑻）比較的圖。如圖5所示’當塗布輥與導輥交替排列 f ’與其中塗布輕和導輥彼此接觸的擠壓式排列相比，軟 模和塗布輥間的接觸面積200增加。 在被上述預塗布裝置A預塗布後，軟模2〇被主輥i⑽ 旋轉，從而被傳送至主塗布裝置，即用於二次塗布的塗布 201219199 j / uupif 液注入裝置110。為了進行二次塗布，用塗布液注入 110將塗布液注入軟模20的圖案中。雖然對二次塗布^即 主塗布）躺的塗布祕人位置無制限定，但通常在軟 模20與基膜10結合前注入塗布液。塗布液注入裝置 構成了主塗布裝置，且可很容易地由本領域技術人員安 裝。此外，前述預塗布或主塗布申所用的塗布液為本 技術人員所熟知。 在完成用塗布液注入裝置11〇的主塗布後，使軟模2〇 與基膜10結合。在示例性實施方式中，第一輥12〇與主輥 1〇〇接合’並起到將基膜10壓到軟模2〇上以使基膜 軟模20彼此結合的作用。 、本領域技術人員可很容易確定第一輥12〇的大小和壓 力以及第一輥120和主輥1〇〇間的距離。 所得結合膜11採用具有其間有塗布液的基膜1〇盘軟 ，、2〇的叠層的形式。結合膜u被硬化同時沿主報1〇〇被 f送。雖然、附圖中未示出’可在分開結合膜u位置的上游 ，供硬化裝置。硬化奸可為織置讀外裝置，且可很 ^易由本領域技術人員絲。在示娜實施方式中，硬化 、置可提供在第一輥12〇和第二輥13〇之間。 已硬化的膜可分離為軟模2〇和圖案化的光學膜12。 f案化的光學膜12由_ 10和在顏H)上的已硬化的塗 :液層組成。在軟模2G與絲膜12祕前，已硬化的層 二有轉移自軟模2〇的圖案。如果以常視方式將上述所得圖 ”化的光學膜12捲繞，則完成了鮮片産品的製備。 201219199 j /1 ^υριΐ 知圖第二親13〇可用於將已硬化的膜分離為軟模20 八的光學膜12。在示例性實施方式中，可提供第二 輕⑽以在與軟模2〇接觸期間將軟模Μ傳送至預塗布I 置Α。本領域技術人員可很容易安裝第二輥13〇。 义 將被第二輥13〇剝離的軟模2〇傳送至 並重複上述操作。 本發明的鮮片製料置可進—步包括控制正被傳 运的膜張力的張力控制輥（未顯示）。例如，張力控制輥可 位於如第二輥130和導輥14〇之間，或導輥142和主輥⑺〇 之間。此外’本領域技術人員可很容易實施該張力控制 的安裝。 本發明的另一方面涉及一種製備光學片的方法。 光學片製備方法包括用導輥與塗布輥彼此交替排列 且彼此不相接合的驗布裝置來龍布賴，將經預塗布 的軟模傳送至域布裝置簡塗布·人軟模，將基膜與 已/主入塗布㈣軟模結合則彡成結合膜’將所述結合膜分 離為軟模和圖案化的光學膜，並將軟模返回至 、 置，以重複預塗布。 頂—裝 預塗布裝置可包括將軟模傳送至主塗布裝置的導 輥，和在接收來自樹脂進料容器的塗布液時通^ 預塗布軟模的塗布報。 八疋W來 在示例性實施方式中，光學片製備方法可進一步包括 在將軟模與光學膜剝離前使結合膜硬化。 下文中，將通過以下優選實施例來描述本發明的結構 201219199 ^/1 =作。注意這不意味著將本發於所公_特定實施 本領域技術人員將很容易想到本文 構和操作，對它們的描述將省略。 ⑼的其它結 實驗例1 將㈣轉的聚對苯二甲酸乙二醇醋（p 品名:A4300，曰本 T〇Y〇B〇 c〇，Ltd 生 U 商 且使用由相同材料製成的具有微透鏡圖案的i模， 將可UV固化的丙稀酸類樹脂（商品名⑽太 NATOCO Co” Ltd.生產）用作塗布液 :，日本 置製備光學膜。此時’軟模以1〇m/m J 布輥以軟模傳送方向师導= 旋轉方向相反）。制得光學_圖案使 ’鏡。201219199 J / υυριι VI. Description of the Invention: TECHNICAL FIELD The present invention relates to an apparatus for producing an optical sheet and a method of producing an optical sheet using the same. More particularly, the present invention relates to a roll to roll type optical sheet preparing apparatus using a soft mold and an optical sheet preparing method using the same, in which a soft mold is installed in a precoating stage A coating device having a larger contact area with the coating roll can achieve higher yield than the prior art, and can effectively fill the coating liquid and remove air bubbles. [Prior Art] A backlight unit used in a liquid crystal display (LCD) includes an optical sheet that promotes light refraction and diffusion to improve uniformity and brightness of light. These optics may include a diffusing sheet that diffuses light, a prism sheet laminated on the upper surface of the diffusing sheet to concentrate the diffused light and transmit the light to the liquid crystal display panel, and a protective sheet that protects the diffusing sheet and the cymbal sheet. The surface of these optical sheets is usually subjected to a predetermined patterning treatment in order to enhance the light diffusing ability and brightness of these optical sheets and their optical properties. Recently, the optical sheet has been patterned on a large scale using a roll-to-roll apparatus. The roll-to-roll device can be classified into a hard mode device using a patterned metal mold and a soft mode device using a film mold. It is difficult for the hard mode device to form a hemispherical microlens pattern, however the soft mode can advantageously form various patterns including microlens patterns. However, in the case of the soft mode device, if the mold is moved at a high speed in order to increase the yield of the optical sheet 4 201219199 J/ioopif, bubbles may be generated in the pattern, or may be caused by insufficient injection of the coating liquid. Regular pattern shapes, resulting in serious damage to product quality. In particular, the generation of bubbles is further emphasized for the hemispherical microlens pattern'. In order to solve these problems, most soft mode devices are precoated with a coating liquid filling unit before main coating. τ Korean Patent No. 887340 discloses a method of filling a coating liquid using at least one squeezing roller portion which is filled with a polymer resin by extruding a polymer resin into a pattern of a film. Fig. 1 illustrates an optical sheet preparing apparatus using a squeeze roll. As shown in Fig. 1, the conventional optical sheet preparing apparatus is constructed such that the patterned soft mold 20 is conveyed by the main roll 100 during contact with a part of the main roll. When the soft mold 2 turns around the periphery of the main roll 1〇〇, the coating liquid filling device 110 fills the coating liquid into the pattern of the soft mold 2 turns. This operation is equivalent to the main coating, and usually, the soft mold 2 is precoated, followed by main coating. After the main coating using the coating liquid filling device 110 is completed, the soft mold 20 is bonded to the base film 10. Specifically, the first film 120 joined to the main roll 1 turns the base film 1 onto the soft mold 2 so that they are bonded to each other, and then the resultant bonding film 11 is hardened and conveyed along the main roll 100. The hardened film is then separated into a soft mold 20 and a patterned optical film 12. In this case, the soft mold 20 is peeled off from the patterned optical film 12 by the second roller 130, and then transferred to the precoating apparatus A. The precoating device A is composed of guide rolls 140, 141 and H2 to transfer the soft mold 2 to the main coating device, that is, the coating liquid is applied to the left side 110 and joined to the respective guide rolls 14A, 141 and 142 to pre-coat soft. The coating rolls 150, 151 and 152 of 20 were replaced. Coating rolls 150, 151 and 201219199 152 are provided to receive the coating liquids from the resin feed containers 16A, 161, and 162. After the soft mold 20 is precoated by the precoating apparatus A, the soft mold 2 is rotated by the main roll 1 turns to be transferred to the coating liquid filling apparatus 110, and then subjected to secondary coating, i.e., main coating. However, the above-described method using the squeezing roller provides a soft mold having only a small unit contact area on each of the squeezing roller substrates, so that it is necessary to additionally mount a plurality of squeezing rolls to improve the yield. The use of multiple rolls increases the size of the equipment and the risk of contamination of foreign materials due to exposure of the rolls to the outside during coating. SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and an object of the invention is to provide an apparatus for preparing an optical sheet. According to an aspect of the present invention, the above and the object of the present invention can be accomplished by a device for providing a (four) lining material, wherein the I-prepared photoprecipitator comprises a patterned soft mold; a main roller, The main roller is configured to function to transfer a base film that has been coated with a coating_soft mold and combined with the two molds; a first report, the first roller and the main newspaper interface, And functioning to press the base film onto the soft mold having been coated with the coating liquid from bonding the base film and the soft mold to each other; the second roller, the first light has passed the The first bonding film is separated into the soft die = the optical film; and the pre-coating device 'the pre-coating device pairs at least one guide to the buck, the guide Transmitting to the main coating device 'the coating lightly pre-coating the soft mold by rotating it when receiving the coating liquid from the tree 4 container, and the dragon 曰 201213⁄4 = Μ Μ Μ 所 所 且 且 且 且 且 且 且 且 且The coating wheel can be rotated in the direction of rotation of the guide wheel without contacting each other. The direction of rotation of the coating roller may be opposite to the direction of rotation of the guide roller. The at least one guide roller may include two or more guide rollers. The guide roller may include a first guide roller and a second guide light adjacent to each other, and the coating pro is located between the first guide roller and the second guide light. The sculpt optical sheet preparing apparatus may further include a hardening means between the first roll and the second roll. The optical #preparation device can further include a tension control roller that controls the tension of the film being conveyed. The above features and advantages of the present invention will become more apparent from the description of the appended claims. [Embodiment] Hereinafter, the f and the operation according to a preferred embodiment of the present invention will be described in more detail. In the following bribes, some parts are the same as the prior art base i's. Therefore, even in different levels, the phase mark table is used. FIG. 2 is a schematic view of the optical sheet preparation according to an exemplary embodiment of the present invention. . As shown in the figure, the optical sheet preparing device is disposed such that the soft mold 20 is rotated and conveyed by the main roller 1 在 during contact with the main roller 1 。. The soft mold 2 has a pattern ' and is usually made of a resin material. The shape of the pattern is not particularly limited and is often used for various patterns of the optical sheet. For example, a semi-201219199 spherical microlens pattern, a double-sided convex pattern, a prism-shaped pattern, a half-load pattern, and a random convex-concave pattern may be used, but the shape of the pattern is not necessarily limited thereto. The soft mold 20 contacts all or only the contact-partial main light 100, and can also be rotated to contact another guide roller or tension control light to ensure that it is easy to rotate. When the soft mold 20 is rotated around the periphery of the main light, the coating liquid is filled into the pattern. In the towel of the present invention, after the soft mold 2G has been precoated by the precoating apparatus a and the bubble removing operation is performed, the main coating of the soft mold 20 is performed by the main coating device. In contrast to the prior art pre-coating of the squeezing rolls of the pre-coating apparatus in a roll-to-roll manner, in the present invention, the pre-coating apparatus A is provided such that the guide rolls and the coating rolls are alternately arranged in a pattern of minerals and are not in phase with each other. Engage. In an exemplary embodiment, the precoating apparatus eight of the present invention includes the guiding members 140, 141 and 142 and the coating pro- 15 and (5). The guide rollers 14A, 141, and 142 function to transfer the soft mold 2 to the main coating device. The coating parents 150 and 151 function to pre-coat the soft mold 20 by rotating it while receiving the coating liquid from the resin feeding container 16〇. Although Fig. 2 shows three guides', the number of guide rollers is not limited to this. In an exemplary embodiment, the precoating device A may include two or more guides. For example, 2 to 5 guides can be used. The guide rollers 14A, 141, and 142 function not only to provide the soft mold 20 having a suitable tension to convey the soft mold 20' but to guide the soft mold 20 that has passed through the precoating device A to the main coating device. The coating rolls ISO and 151 may be positioned between the guide rolls 14A, 141, and 142 so as not to be engaged with the guides U0, (4), and 142. Specifically, the guide rolls 140, 141, and 142 on the side of the soft mold 2 are aligned with the paint 8 201219199 J / 1 jupif r51 on the other side of the soft mold 2 . In this case, the residual shape of the soft mold 20 (... Θ 4 a) can be transmitted. Or, when the guides 140, 141 are gripped? When the crucible and the coating views 150 and 151 are arranged to have the same central axis, the zigzag path shown in Fig. 4(b) is transmitted. Under consideration, the guide rolls, 141 and 142, and the large are appropriately determined. The position of 150 and 151 is such that the contact area of each of the coating rolls is the same as that of the guide roller in the most exemplary embodiment, or it can be rotated in the opposite rotation direction of the guide roller. Fig. 3 (a) The _ direction of the T H money is opposite to the direction of rotation of the wheel P ′ The direction of rotation of the coating roller is # in the direction of transport of the soft mold). Fig. 3 (1) illustrates the case where the coating roller and the guide roller have the same direction of rotation (i.e., the direction of rotation is opposite to the direction in which the soft mold is conveyed). It can be understood from the above description that the control of the rotation direction and the rate of the coating can further increase the contact area between the coating roller and the soft mold. Thus, a sufficient amount of the coating liquid can be effectively applied to the f-surface without increasing the coating light. The amount does not require additional equipment, resulting in an increase in yield compared to the use of a large number of coating rolls. Fig. 5 is a graph comparing the contact area obtained by a conventional method using a squeeze roll (Fig. 5 (a)) with the contact area obtained by the method according to the present invention (Fig. $ (8)). As shown in Fig. 5, the contact area 200 between the soft mold and the coating roller is increased when the coating roller and the guide roller are alternately arranged f' with a squeeze type in which the coating light and the guide roller are in contact with each other. After being precoated by the above precoating apparatus A, the soft mold 2 is rotated by the main roll i (10) to be transferred to the main coating apparatus, that is, the coating 201219199 j / uupif liquid injection apparatus 110 for secondary coating. For the secondary coating, the coating liquid is injected into the pattern of the soft mold 20 by the coating liquid injection 110. Although the position of the coating application of the secondary coating, i.e., the main coating, is not limited, the coating liquid is usually injected before the soft mold 20 is bonded to the base film 10. The coating liquid injection device constitutes a main coating device and can be easily installed by those skilled in the art. Further, the coating liquids used in the aforementioned precoating or main coating applications are well known to those skilled in the art. After the main coating with the coating liquid injection device 11 is completed, the soft mold 2 is bonded to the base film 10. In the exemplary embodiment, the first roller 12 is engaged with the main roller 1' and functions to press the base film 10 onto the soft mold 2 to bond the base film soft mold 20 to each other. The size and pressure of the first roller 12〇 and the distance between the first roller 120 and the main roller 1〇〇 can be easily determined by those skilled in the art. The obtained bonding film 11 was in the form of a laminate having a base film 1 with a coating liquid therebetween and a 2 〇 layer. The bonding film u is hardened and sent along the main signal. Although not shown in the drawings, it may be provided upstream of the position where the film u is separately bonded to the hardening device. The septic can be a woven external reading device and can be easily handled by those skilled in the art. In the Shina embodiment, a hardening, setting may be provided between the first roller 12A and the second roller 13A. The hardened film can be separated into a soft mold 2 and a patterned optical film 12. The optical film 12 of the f-form consists of _ 10 and a hardened coating layer on the face H). Before the soft mold 2G and the silk film 12 are secreted, the hardened layer 2 has a pattern transferred from the soft mold 2 turns. If the optical film 12 obtained as described above is wound in a normal manner, the preparation of the fresh product is completed. 201219199 j /1 ^υριΐ The second parent 13 can be used to separate the hardened film into a soft one. The optical film 12 of the mold 20. In an exemplary embodiment, a second light (10) may be provided to transfer the soft mold 至 to the pre-coated I during contact with the soft mold 2 Α. Those skilled in the art can easily install The second roller 13 is conveyed to the soft mold 2 which is peeled off by the second roller 13A, and the above operation is repeated. The fresh sheet material of the present invention can further include a tension controlling the tension of the film being conveyed. Control roller (not shown). For example, the tension control roller may be located between, for example, the second roller 130 and the guide roller 14A, or between the guide roller 142 and the main roller (7). Further, the person skilled in the art can easily implement the same. Installation of Tension Control. Another aspect of the invention relates to a method of preparing an optical sheet. The optical sheet preparation method comprises a fabric inspection apparatus in which guide rolls and coating rolls are alternately arranged with each other and are not joined to each other. The coated soft mold is transferred to the domain cloth device Coating a human soft mold, combining the base film with the already/primarily coated (four) soft mold to form a bonded film 'separating the bonded film into a soft mold and a patterned optical film, and returning the soft mold to the set, The pre-coating device may be repeated. The top-loading pre-coating device may include a guide roller that conveys the soft mold to the main coating device, and a coating report that pre-coats the soft mold when receiving the coating liquid from the resin feed container. In an exemplary embodiment, the optical sheet preparation method may further include hardening the bonding film before peeling off the soft mold from the optical film. Hereinafter, the structure of the present invention will be described by the following preferred embodiments 201219199 ^/1 = It is to be noted that this is not to be taken as a matter of course. The specific construction and operation will be readily apparent to those skilled in the art, and their description will be omitted. (9) Other junctions Experimental example 1 (4) Poly(p-phenylene) Ethylene glycol vinegar (p name: A4300, 曰本〇T〇Y〇B〇c〇,Ltd) U and used i-mold with microlens pattern made of the same material, UV-curable acrylic acid Resin (trade name (10) too NATOCO Co Ltd.) was used as the coating solution:, Japan producing an optical film opposite case 'soft mode at 1〇m / m J cloth roller guide Normal soft mold conveying direction opposite to the rotation direction =). An optical _ pattern is made to make the mirror.
^ ： ICAMSCOPE SV32，SOMETBCH 放大率下拍照。光學酿則顯示在圖6巾。 ° 實驗例2 實驗例2採用與上述實驗例j相同的方法進行，區別 在於塗布㈣旋财向與軟模舰时向減（即塗布輥 具有與導__旋轉方向）。_的絲顯触片顯示在 圖7中。 比較例1 將250卿厚的聚對笨二曱酸乙二醇酯（PET)膜（商 品名：A4300，日本τ〇γ〇Β〇 c〇，Ltd生産）用作基膜， 且使用由相同材料製成的具有微透鏡圖案的軟模。此外， 12 201219199 J / 1 jopif 將可UV固化的丙婦酸類樹脂（商品名：S-001，日本 NATOCO C〇·，Ltd.生產）用作塗布液，以用圖1所示的裝 置製備光學膜。此時，軟模以5 m/min的速率傳送。制得 光學膜的圖案使用光學顯微鏡（商品名：ICAMSCOPE SV32，SOMETECH Inc.生産）在600倍放大率下拍照。光 學顯微照片顯示在圖8中。 比較例2 比較例2採用與上述比較例1相同的方法進行，區別 在於軟模以10 m/min的速率傳送’且導輥和塗布輥的數量 分別為4個。圖案的光學顯微照片顯示在圖9中。 表1 L/S (m/min) 塗布 親的數量 實驗例1 10 2 _ 實驗例2 10 2 _ 比較例1 5 3 10 4 如圖6至9所示，可確定實驗例1和2基本不含氣泡， ^而比較例1包含氣泡。此外，可確定模傳送速率增加的 比較例2包含大量氣泡。 本然本發明已以實施例揭露如上，然其並非用以限定 ,"任何所屬技術領域中具有通常知識者，在不脫離 ^之精神和範圍内，當可作些許之更動與潤飾，故本 £ 13 201219199 •J / uupif 圍所界定者為準。 =::=r後附之申請專利範 圖1為常規光學片製備裝置的示意圖。 裝置本购—個示雕實施方式的光學片製備 抬扁圖3 (a)為根據本發明示例性實施方式，塗布輥以軟 、送方向旋轉的圖示；且圖3 (b)為塗布親以相反於傳 送方向旋轉的圖示。 圖4 (a)為根據本發明一個示例性實施方式的預塗布 裝置的圖不，且圖4 (b)為根據本發明另一個示例性實施 方式的預塗布裝置的圖示。 圖5為將根據本發明方法獲得的接觸面積與使用擠壓 輥的常規方法獲得的接觸面積比較的圖。 圖6為實施例1製備的光學片的光學顯微照片。 圖7為實施例2製備的光學片的光學顯微照片。 圖8為對比例1製備的光學片的光學顯微照片。 圖9為對比例2製備的光學片的光學顯微照片。 【主要元件符號說明】 10 ·基膜 11 :結合膜 12 :光學膜 20 :軟模 100 :主輥 110 :塗布液加注裝置 201219199 120 :第一輥 130 :第二輥 140、141、142 :導輥 150、151、152 :塗布輥 160、161、162 :樹脂進料容器 200 :接觸面積 A :預塗布裝置^ : ICAMSCOPE SV32, SOMETBCH photo taken at magnification. Optical brewing is shown in Figure 6. ° Experimental Example 2 Experimental Example 2 was carried out in the same manner as in Experimental Example j described above, except that the coating (4) and the soft mold ship were reduced in time (i.e., the coating roll had a direction of rotation with the guide __). The silk display of _ is shown in Figure 7. Comparative Example 1 A 250-inch thick polyethylene terephthalate (PET) film (trade name: A4300, manufactured by Japan τ〇γ〇Β〇c〇, Ltd.) was used as a base film, and the same was used. A soft mold having a microlens pattern made of a material. Further, 12 201219199 J / 1 jopif A UV-curable propylene glycol resin (trade name: S-001, manufactured by NATOCO C〇·, Ltd., Japan) was used as a coating liquid to prepare an optical apparatus using the apparatus shown in Fig. 1. membrane. At this time, the soft mode is transmitted at a rate of 5 m/min. The pattern of the optical film produced was photographed at 600 times magnification using an optical microscope (trade name: ICAMSCOPE SV32, manufactured by SOMETECH Inc.). Optical micrographs are shown in Figure 8. Comparative Example 2 Comparative Example 2 was carried out in the same manner as in Comparative Example 1, except that the soft mold was conveyed at a rate of 10 m/min and the number of the guide rolls and the coating rolls was four. An optical micrograph of the pattern is shown in Figure 9. Table 1 L/S (m/min) Number of coated pro-experiment Example 1 10 2 _ Experimental Example 2 10 2 _ Comparative Example 1 5 3 10 4 As shown in Figures 6 to 9, it can be confirmed that Experimental Examples 1 and 2 are substantially not Bubbles were included, and Comparative Example 1 contained bubbles. Further, Comparative Example 2, which can determine an increase in the mode transfer rate, contains a large amount of bubbles. The present invention has been disclosed in the above embodiments, but it is not intended to be limiting, and any person skilled in the art can make some changes and refinements without departing from the spirit and scope of the invention. This £13 201219199 •J / uupif enclosure is subject to change. =::== appended to the patent application Figure 1 is a schematic view of a conventional optical sheet preparation apparatus. The optical sheet preparation of the present invention is shown in FIG. 3 (a) is a diagram in which the coating roller is rotated in the soft direction and the feeding direction according to an exemplary embodiment of the present invention; and FIG. 3 (b) is a coating pro An illustration that rotates in the opposite direction to the conveying direction. 4(a) is a view of a precoating apparatus according to an exemplary embodiment of the present invention, and FIG. 4(b) is a diagram of a precoating apparatus according to another exemplary embodiment of the present invention. Fig. 5 is a graph comparing the contact area obtained by the method according to the present invention with the contact area obtained by a conventional method using a squeeze roll. Figure 6 is an optical micrograph of an optical sheet prepared in Example 1. Figure 7 is an optical micrograph of an optical sheet prepared in Example 2. Figure 8 is an optical micrograph of an optical sheet prepared in Comparative Example 1. Figure 9 is an optical micrograph of an optical sheet prepared in Comparative Example 2. [Description of Main Element Symbols] 10 · Base film 11 : Bonding film 12 : Optical film 20 : Soft mold 100 : Main roll 110 : Coating liquid filling device 201219199 120 : First roll 130 : Second roll 140 , 141 , 142 : Guide rolls 150, 151, 152: coating rolls 160, 161, 162: resin feed container 200: contact area A: precoating device