201027137 六、發明說明： 【相關申請案參照】 本申請案主張2008年11月21日申請的韓國專利申請案 • 第10_2008-0116507號的權利，其全文以引用方式併人本文月中、。 【發明所屬之技術領域】 以下描述有關用在液晶顯示器中的光學平板及且誃 學平板的背光單元。 ❹ 【先前技術】 一般而言，主要將平板顯示器(FPD)分類成發射型顯示 11及非魏麵示^。電聚顯示硫(PDP)及場發射型顯示 器(FED)被分類為發射型顯示器，而液晶顯示器(LED)則被分 * 類為非發射型顯示器。液晶顯示器本身不發光，因此需要用 作外部光源的背光單元。 背光單元一般包括燈、擴散片及棱鏡片。燈用作發光的 光源，擴散片散射光致使提供均勻擴散的光，及稜鏡片透過 折射而聚集光。除了擴散片及稜鏡片之外，還可在稜鏡片上 堆登其匕光學平板，以改良液晶顯示器的亮度或光的均勻 性，或防止疊紋現象發生。 然而’在面對與稜鏡片平行延伸之液晶面板的稜鏡片表 面上重複形成用於聚焦光的三角柱形狀突出。據此，如果在 稜鏡片上堆疊另一光學平板，在突出邊緣及光學平板下表面 4 201027137 之間將發生摩擦，或突出將因摩擦而受到損壞。除了稜鏡 片，在具有透鏡形圖案或雙凸透鏡狀圖案的光學平板中可發 生對突出的此種損壞或摩擦。 此種摩擦或突出損壞將造成光學干涉，因而降低棱鏡片 « 的透明度。為了防止棱鏡片變模糊，將對光學平板的下表面 進行塗布處理。然而，此種塗布處理將增加製造期間所需要 的製程步驟數量及/或製造成本。 〇 同時’在側光式背光單元(即，燈被安裝在背光單元側 面的背光單元）中’更包括反射片及光導板。反射片被組態 致使從燈發出的光被反射朝向液晶面板的螢幕。光導板被組 • 態致使從燈發出的光及被反射片反射的光被導引及分布在 - 液晶面板的整個表面上。此外，在光導板上堆疊包括擴散片 及稜鏡片的上述光學平板。 〇 然而，在光導板上堆疊光學平板時，在光導板及光學平 板之間可能產生滲濕現象。滲濕現象是濕氣在光導板及光學 平板之間滲透的一種狀況。為了抑制滲濕現象，將對光學平 板的下表面進行塗布處理。然而，此種塗布處理將增加製造 期間所需要的製程步驟數量及/或製造成本。 . 此外，—種直下^背光單元設有擴散光的擴散板而非光 v板。然而’即使在擴散板上堆疊光學平板的製程中，也會 產生滲濕現象。 201027137 同時，如果液晶面板螢幕亮度很低，將使明亮色彩的表 現降級。就此而言，需要增強液晶顯示器的亮度。 【發明内容】 據此’在一方面，提供一種光學平板及具有該光學平板 的背光單元，其中抑制在堆疊複數個光學平板時發生的摩擦 現象及因此對圖案層造成的損壞，增強液晶顯示器的亮度及 抑制滲濕現象。 在一综合方面，提供一種光學平板包括：一底層；一圖 案層’其形成於該底層上且具有一起伏圖案；及複數個柱 體’其形成於該圖案層上並突出一超過該圖案層之高度的高 度。 在一綜合方面，提供一種背光單元包括：一發出光的 燈；一導引從該燈發出之光的光導板；一堆疊在該光導板上 以擴散或聚集從該光導板導引之光的第一光學平板；及一堆 疊在該第一光學層上的第二光學平板。該第一光學平板包 括：一底層；一圖案層，其形成於該底層上且具有一起伏圖 案；及複數個柱體，其形成於該圖案層上並突出一超過該圖 案層之高度的高度。 Λ 在另一綜合方面，提供一種背光單元包括：—發出光的 燈；一擴散從該燈發出之光的擴散板；一堆疊在該擴散板上 以擴散或聚集從該擴散板接收之光的第一光學平板；及一堆 201027137 =在f第—光學層上的第二絲平板。該第-光學平板包 •一底層；一圖案層，其形成於該底層上且具有一起伏圖 2思及複數個柱體，其形成於該圖案層上並突出一超過該圖 • 茶層之高度的高度。 合方面，提供-麵示裝置包括：—發出光的光 i發:導引從該光源發出之光的光導板及/或一擴散從該光 二出之光的擴散板；一堆疊在該光導板或該擴散板上的第 ❹ =學平板；及—堆疊在該第—光料板上的咖面板。該 —光學平板包括：一底層；一圖案層，其形成於該底層上 〃、有起伏圖案；及複數個柱體，其形成於該圖案層上的 不規則位置處並突出一超過該圖案層之高度的高度。 • 根據本發明，在將光學平板堆疊一起時，光學平板之圖 案層的突出未與另一光學平板接觸，因此可防止在另一光學 平板的下表面上產生摩擦，或防止圖案層被摩擦損壞。此 〇 外，在犬出及另一光學平板之間形成空氣腔，以增強夜晶顯 示器的亮度。 ’ 此外，根據本發明，在光導板或擴散板上堆疊光學平板 時，在光導板及光學平板之間或在擴散板及光學平板之間形 , 成空氣腔，以抑制滲濕現象及增強液晶顯示器的亮度。 此外，根據本發明，不需要防止摩擦或滲濕的塗布處 理’因而降低製造期間的製程步驟數量及製造成本。 201027137 參考以下纟《 &關揭露本發明示範性具體實施例的「實 施方式」，熟習本技術者將明白其它特徵。 【實施方式】 提供以下「實施方式」幫助讀者對本文所述方法 、裝置 及/或系統獲得全面性瞭解。一般技術者可對本文所述系 統、裝置及/或方法進行各種變更、修改、及等效做法。為 了簡明扼要，將省略熟知功能及結構的描述。 圖1為顯示第一示範性光學平板的橫截面圖，及圖2為 顯示圖1之示範性光學平板的平面圖。 如圖1及2所不，第一示範性光學平板1〇〇包括底層 110、圖案層120及複數個柱體13〇。 ❹ 底層I10用作其上形成圖案層120及柱體130的基部。 以具有預定厚度之薄膜的形式提供底層11〇。底層11〇由透 光|·生材料形成。例如，底層11〇由聚對苯二甲酸二乙酯(ρΕτ) 形成。 ^圖案層120形成於底層11〇上且具有起伏圖案。雖然示 靶性起伏圖案可以是棱鏡圖案121，但本發明不限於此。另 不範性起伏圖案可以是包括選自以下項目任何一項的單 一=案：聚光圖案（諸如棱鏡）、擴散圖案(諸如透鏡）、雙凸 透兄狀圖案、及二角錐圖案，或可以是包括至少兩個選自以 8 201027137 下，目的複σ圖案.聚光圖案、擴散圖案、雙凸透鏡狀圖案 及—角錐圖案。下文中，將關於作為起伏圖案範例的棱鏡進 灯描述’但本發明亦適用於棱鏡圖案以外的其它圖案。 彳以誘發光之聚焦功能的任何其它形狀提供棱鏡圖案 121。舉例而言’棱鏡圖案121包括三角形棱鏡狀突出ma， 亦具有三角形縱剖面的突出重複地形成於底層 110上並 沿著底層11G的-個方向延伸。突出121a _點為尖端、 Ο 在兩個相鄰的突出咖之關區域為低谷，及連接尖端及 低谷的直線為斜面。圖案層12G由具有預定透射率及折射率 的黏著麵脂形成。同時，圖案層12〇可由底層11〇的相同 材料形成，但不限於此。柱體130可由圖案層120的相同材 - 料形成，但不限於此。 複數個柱體130形成於圖案層120上並突出超過圖案層 120之高度的高度。圖案層12〇的高度被界定為突出12U ◎ 的咼度。如果在圖案層12〇上堆疊另一光學平板1〇，例如 擴散片或保護片，則柱體13〇支樓另一光學平板1〇。柱體 130的上表面接觸另一光學平板1〇的下表面，藉此防止圖 案層120接觸另一光學平板1〇。 據此，柱體130防止光學平板1〇的下表面因圖案層120 之突出121a的尖端而產生摩擦，或防止突出121a因摩擦而 損壞。因此，不需要在另一光學平板1〇的下表面上執行塗 布處理，因而減少製造期間所需的製程步驟數量及製造成 本。 201027137 此外，柱體130允許在突出121a及另一光學平板10之 間形成空氣腔，藉此增強液晶顯示器的亮度。亦即，隨著光 前進通過具有相對低密度的空氣腔並朝向具有相對高密度 的另一光學平板10行進，使光再循環及折射且最後聚焦在 另一光學平板10的發射表面上，因而增強液晶顯示器的亮 度。 ❹ 柱體13〇可按規則的方式或不規則的方式來配置。無論 柱體130的配置為何，柱體]3〇較佳是以符合下文所述範園 的密度來分布。柱體130的規則配置可對光學平板1〇〇的光 學性質造成影響，因而降低液晶顯示器的亮度或使液晶的亮 _ 度为布不均勻。此外，如果柱體130被有規則地配置，則觀 察者將察覺柱體130的配置。同時，如果柱體130被不規則 地配置’則可防止亮度的降級或不均勻的亮度且亦可防止疊 紋現象。此外，如果柱體13〇以不規則的方式來配置，則觀 察者將不容易察覺這些柱體。 在此情況下，柱體130可分布在所有尖端、低谷及斜面 上。或者，柱體130可分布在尖端、低谷及斜面的至少一個 而非全部上。棱鏡圖案的「尖端」代表棱鏡的頂點，棱鏡圖 案的「低谷」代表在相鄰棱鏡之間的凹陷，及「斜面」代表 連接「尖端」及「低谷」的傾斜表面。圖3為顯示不同種類 ' 之柱體分布的橫截面圖。在(a)的情況中，柱體130分布在棱 鏡圖案丨21的所有尖端、低谷及斜面上。在(b)、⑷及⑷的 情況中，柱體130分別分布在棱鏡圖案121的尖端上、在棱 201027137 鏡圖案121的低谷上及在棱鏡圖案121的斜面上。由於摩擦 主要出現在棱鏡圖案121的尖端處，因此柱體13〇較佳是形 成在棱鏡圖案121的尖端上。同樣地，即使是其它的圖案， . 柱體130較佳是形成在其它圖案的尖端上。 每一個柱體130具有包括平坦表面的突出末端。平坦表 面防止在另一光學平板10的下表面上因柱體13〇本身而產 生摩擦。如圖4所示，柱體130的末端部分可具體實現為未 〇 修飾過的平坦表面，或末端部分的邊緣可被磨圓。在(a)的情 況中，柱體130的末端部分為未修飾過的平坦表面，及在(的 的情況中，末端部分的邊緣被磨圓而具有預定半徑。 是，半徑介於〇.4摩至15 ium。 ， 柱體130的突出末端可包括平坦表面及在平坦表面上 形成的光學結構。在此情況下，附加的光學結構可與平坦表 面一體形成或以獨立結構提供。參考圖！的參考數字&㈨ ❹ 及13Gb ’可以微透鏡的形式提供光學結構。然而，光學結 構並不限於此’而是可實施為散射結構。 同時’可將柱體13〇本身的末端部分實施為諸如 透鏡的光學結構(圖1中的l30c)。此外，可在光學平板 中-起提供具有不同末卿分的柱體。可以各_式提供柱 體130。例如，柱體130可具有圓形橫截面或多邊形橫截面。 在光學平板100上形成的柱體13阿具有相同類別的橫戴面 或包括圓形橫截面及多邊形橫截面的不同橫戴面。 201027137 供為示範性柱體的透視圖。如圖5所示，提 而非圓柱形的柱體⑽。方條形柱體⑽^ 斜，柱體13。亦可分布在棱鏡圖= =;=的方式配置。方條形柱== 之上 學面結或構可包括平坦表面及形成於平坦表面 方條形柱體130的長度⑹沒有限制。例如 鏡圖案121之長度相同或比其短的長 1 2、在條柱體UG具有比棱鏡_ 121之長度短的县 度()的情況下’可在棱鏡_ 121上布置單—柱 各自雜職體13G的長度(财需要相…及Ϊ 同，供各種長度的雜雜體13()。_，方條 以符合下文所述範圍的密度來分布。 、夕 ❿ 此外’柱體m可以垂直柱體的形式提供亦即柱體 no在其上转分及下方部分具有的截面積1者柱 no的截面積可朝向_ 130的下端增加。亦即，柱體^ 6可有ϋΓΓί截頭三角錐或戴頭圓錐的形式提供。圖 具有斜面之減的魏圖。在⑷ 的V况中，柱體m被提供為具有截頭上方部分的戴頭三(） 錐’及在(b)的情況中，㈣130以 _提供。在此情況下，柱體】3。之二= 可被磨圓，及/或可在柱體13G的截頭上方部分上形 201027137 結構。圖6所示的此種_形狀允許 放柱體m，因而增加生產速度及增加生間谷易釋 一，no越低，抗摩擦的效果越低。同時，柱體請越 在光學平，觸及另-光學平板i。之間的距離增加， 而增加背光單70的總厚度。表i顯示在柱體13〇之高产及 乂端維持其絲形狀(以下稱為「尖端彈性 $。 ❹201027137 VI. Description of the Invention: [Related Application Proposal] This application claims the benefit of the Korean Patent Application No. 10-2008-0116507 filed on Nov. 21, 2008, the entire disclosure of which is incorporated herein by reference. [Technical Field to Which the Invention Is Alonged] A backlight unit relating to an optical flat panel used in a liquid crystal display and a slab is described below. ❹ [Prior Art] In general, flat panel displays (FPDs) are mainly classified into an emission type display 11 and a non-wei surface display. Electro-Polymer Display (PDP) and Field Emission Display (FED) are classified as emission type displays, while liquid crystal displays (LEDs) are classified as non-emissive displays. The liquid crystal display itself does not emit light, so a backlight unit for an external light source is required. The backlight unit generally includes a lamp, a diffusion sheet, and a prism sheet. The lamp is used as a light source for illuminating, and the diffuser scatters light to provide uniform diffusion of light, and the ruthenium collects light by refracting. In addition to the diffuser and the cymbal, the cymbal can be stacked on the cymbal to improve the brightness or uniformity of the liquid crystal display or prevent the occurrence of moiré. However, a triangular prism shape protrusion for focusing light is repeatedly formed on the surface of the cymbal facing the liquid crystal panel extending parallel to the cymbal. Accordingly, if another optical plate is stacked on the cymbal, friction will occur between the protruding edge and the lower surface of the optical plate 4 201027137, or the protrusion will be damaged by friction. In addition to the ruthenium, such damage or rubbing to the protrusion may occur in an optical plate having a lenticular pattern or a lenticular pattern. Such friction or protruding damage will cause optical interference, thus reducing the transparency of the prism sheet «. In order to prevent the prism sheet from being blurred, the lower surface of the optical plate is subjected to a coating treatment. However, such a coating process will increase the number of process steps and/or manufacturing costs required during manufacturing. 〇 At the same time, the reflective sheet and the light guide plate are further included in the edge-lit backlight unit (i.e., the backlight unit mounted on the side of the backlight unit). The reflective sheet is configured such that light emitted from the lamp is reflected toward the screen of the liquid crystal panel. The light guide plate is configured to cause light emitted from the lamp and light reflected by the reflection sheet to be guided and distributed over the entire surface of the liquid crystal panel. Further, the above optical flat plate including the diffusion sheet and the cymbal sheet is stacked on the light guiding plate. 〇 However, when optical plates are stacked on a light guide plate, moisture may form between the light guide plate and the optical plate. Moisture is a condition in which moisture penetrates between the light guide plate and the optical plate. In order to suppress the wetting phenomenon, the lower surface of the optical plate is subjected to a coating treatment. However, such a coating process will increase the number of process steps and/or manufacturing costs required during manufacturing. In addition, the backlight unit is provided with a diffusing light diffusing plate instead of a light v plate. However, even in the process of stacking optical plates on a diffusing plate, moisture is generated. 201027137 At the same time, if the brightness of the LCD panel is very low, the performance of bright colors will be degraded. In this regard, it is necessary to enhance the brightness of the liquid crystal display. SUMMARY OF THE INVENTION According to this aspect, an optical plate and a backlight unit having the same are provided, wherein a friction phenomenon occurring when a plurality of optical plates are stacked and thus damage to a pattern layer are suppressed, and the liquid crystal display is enhanced. Brightness and inhibition of moisture. In a comprehensive aspect, an optical plate is provided comprising: a bottom layer; a pattern layer formed on the bottom layer and having a volt pattern; and a plurality of pillars formed on the pattern layer and protruding beyond the pattern layer The height of the height. In a comprehensive aspect, a backlight unit includes: a light-emitting lamp; a light guide plate guiding light emitted from the lamp; and a light stacking plate stacked on the light guide plate to diffuse or collect light guided from the light guide plate. a first optical plate; and a second optical plate stacked on the first optical layer. The first optical plate comprises: a bottom layer; a pattern layer formed on the bottom layer and having a volt pattern; and a plurality of pillars formed on the pattern layer and protruding to a height exceeding a height of the pattern layer .另一 In another comprehensive aspect, a backlight unit is provided that includes: a light-emitting lamp; a diffuser plate that diffuses light emitted from the lamp; and a stacked on the diffuser plate to diffuse or collect light received from the diffuser plate. a first optical plate; and a stack of 201027137 = a second wire plate on the f-optical layer. The first optical plate comprises a bottom layer; a patterned layer formed on the bottom layer and having a plurality of pillars and a plurality of pillars formed on the pattern layer and protruding over the layer of the tea layer Height height. In summary, the providing-display device comprises: - a light emitting light: a light guiding plate for guiding light emitted from the light source and/or a diffusing plate for diffusing light emitted from the light; a stacking on the light guiding plate Or the third panel on the diffuser plate; and the coffee panel stacked on the first light panel. The optical plate includes: a bottom layer; a pattern layer formed on the bottom layer and having an undulating pattern; and a plurality of pillars formed at irregular positions on the pattern layer and protruding beyond the pattern layer The height of the height. • According to the present invention, when the optical plates are stacked together, the protrusion of the pattern layer of the optical plate is not in contact with the other optical plate, thereby preventing friction on the lower surface of the other optical plate or preventing the pattern layer from being damaged by friction . In addition to this, an air cavity is formed between the dog and another optical plate to enhance the brightness of the night crystal display. Further, according to the present invention, when an optical flat plate is stacked on a light guiding plate or a diffusing plate, an air cavity is formed between the light guiding plate and the optical plate or between the diffusing plate and the optical plate to suppress moisture absorption and enhance liquid crystal. The brightness of the display. Further, according to the present invention, there is no need for a coating process for preventing rubbing or wetting, thereby reducing the number of process steps and manufacturing costs during manufacturing. 201027137 Reference is made to the following description of the "embodiment" of the exemplary embodiments of the present invention, and other features will be apparent to those skilled in the art. [Embodiment] The following "embodiments" are provided to assist the reader in obtaining a comprehensive understanding of the methods, devices, and/or systems described herein. Various changes, modifications, and equivalents may be made to the systems, devices, and/or methods described herein. For the sake of brevity, descriptions of well-known functions and structures will be omitted. 1 is a cross-sectional view showing a first exemplary optical plate, and FIG. 2 is a plan view showing an exemplary optical plate of FIG. 1. As shown in Figures 1 and 2, the first exemplary optical plate 1 includes a bottom layer 110, a pattern layer 120, and a plurality of columns 13A.底层 The underlayer I10 serves as a base on which the pattern layer 120 and the pillars 130 are formed. The underlayer 11 is provided in the form of a film having a predetermined thickness. The bottom layer 11 is formed of a light-transmitting material. For example, the underlayer 11 is formed of polyethylene terephthalate (ρΕτ). The pattern layer 120 is formed on the underlayer 11 and has an undulating pattern. Although the representative undulation pattern may be the prism pattern 121, the invention is not limited thereto. Another irregular relief pattern may be a single case including any one of the following items: a concentrating pattern (such as a prism), a diffusion pattern (such as a lens), a biconvex pattern, and a pyramidal pattern, or may It is comprised of at least two selected complex sigma patterns, a concentrating pattern, a diffusion pattern, a lenticular pattern, and a pyramid pattern selected from 8 201027137. Hereinafter, a prism-indicating lamp as an example of a undulating pattern will be described', but the present invention is also applicable to other patterns than the prism pattern. The prism pattern 121 is provided in any other shape that induces a focusing function of light. For example, the prism pattern 121 includes a triangular prism-shaped protrusion ma, and protrusions having a triangular longitudinal section are repeatedly formed on the bottom layer 110 and extend in the direction of the bottom layer 11G. The protrusion 121a _ point is the tip, Ο the valley between the two adjacent protruding coffee areas is a trough, and the line connecting the tip and the trough is a slope. The pattern layer 12G is formed of an adhesive surface grease having a predetermined transmittance and refractive index. Meanwhile, the pattern layer 12〇 may be formed of the same material of the underlayer 11〇, but is not limited thereto. The pillar 130 may be formed of the same material of the pattern layer 120, but is not limited thereto. A plurality of pillars 130 are formed on the pattern layer 120 and protrude above the height of the pattern layer 120. The height of the pattern layer 12 is defined as the protrusion of the protrusion 12U ◎. If another optical plate 1 〇, such as a diffusion sheet or a protective sheet, is stacked on the pattern layer 12, the column 13 〇 the other optical plate 1 〇 of the branch. The upper surface of the cylinder 130 contacts the lower surface of the other optical plate 1〇, thereby preventing the pattern layer 120 from contacting the other optical plate 1〇. According to this, the cylinder 130 prevents the lower surface of the optical flat plate 1 from being rubbed by the tip end of the projection 121a of the pattern layer 120, or prevents the protrusion 121a from being damaged by friction. Therefore, it is not necessary to perform the coating process on the lower surface of the other optical plate 1〇, thereby reducing the number of process steps and manufacturing costs required during manufacturing. 201027137 In addition, the post 130 allows an air cavity to be formed between the protrusion 121a and the other optical plate 10, thereby enhancing the brightness of the liquid crystal display. That is, as light travels through an air cavity having a relatively low density and travels toward another optical plate 10 having a relatively high density, the light is recirculated and refracted and finally focused on the emitting surface of the other optical plate 10, thus Enhance the brightness of the LCD.柱 The cylinder 13〇 can be configured in a regular or irregular manner. Regardless of the configuration of the cylinder 130, the cylinders are preferably distributed in a density that conforms to the following description. The regular configuration of the cylinders 130 can affect the optical properties of the optical plate 1 , thereby reducing the brightness of the liquid crystal display or making the brightness of the liquid crystal uneven. Moreover, if the cylinder 130 is regularly configured, the observer will perceive the configuration of the cylinder 130. At the same time, if the cylinder 130 is irregularly arranged, it is possible to prevent degradation of brightness or uneven brightness and also to prevent aliasing. Furthermore, if the cylinders 13 are arranged in an irregular manner, the viewer will not easily perceive the cylinders. In this case, the cylinders 130 can be distributed over all tips, troughs, and slopes. Alternatively, the cylinders 130 may be distributed over at least one, but not all, of the tips, troughs, and slopes. The "tip" of the prism pattern represents the apex of the prism, the "low valley" of the prism pattern represents the depression between adjacent prisms, and the "bevel" represents the inclined surface connecting the "tip" and "low valley". Figure 3 is a cross-sectional view showing the distribution of cylinders of different types. In the case of (a), the cylinders 130 are distributed on all the tips, troughs and slopes of the prism pattern 丨21. In the cases of (b), (4), and (4), the pillars 130 are respectively distributed on the tip end of the prism pattern 121, on the valley of the edge pattern 121121 and the slope of the prism pattern 121. Since the rubbing mainly occurs at the tip end of the prism pattern 121, the post 13 is preferably formed on the tip end of the prism pattern 121. Similarly, even with other patterns, the cylinders 130 are preferably formed on the tips of other patterns. Each of the cylinders 130 has a projecting end including a flat surface. The flat surface prevents friction on the lower surface of the other optical plate 10 due to the cylinder 13 itself. As shown in Fig. 4, the end portion of the cylinder 130 may be embodied as a flat surface that has not been modified, or the edge of the end portion may be rounded. In the case of (a), the end portion of the cylinder 130 is an unmodified flat surface, and in the case of (the case, the edge of the end portion is rounded to have a predetermined radius. Yes, the radius is between 〇.4 The protruding end of the cylinder 130 may include a flat surface and an optical structure formed on the flat surface. In this case, the additional optical structure may be integrally formed with the flat surface or provided in a separate structure. The reference numerals & (9) ❹ and 13Gb ' can provide optical structures in the form of microlenses. However, the optical structure is not limited to this, but can be implemented as a scattering structure. At the same time, the end portion of the cylinder 13 itself can be implemented as An optical structure such as a lens (l30c in Fig. 1). Further, a cylinder having different final divisions may be provided in the optical plate. The cylinder 130 may be provided in various ways. For example, the cylinder 130 may have a circular shape. Cross-section or polygonal cross-section. The cylinders 13 formed on the optical plate 100 have the same type of transverse wear surface or different transverse wear surfaces including circular cross-sections and polygonal cross-sections. A perspective view of the cylinder, as shown in Fig. 5, instead of a cylindrical cylinder (10). The square cylinder (10) is inclined, and the cylinder 13 is also distributed in a prism pattern ==;=. The strip column == the upper surface knot or the structure may include a flat surface and the length (6) formed on the flat surface strip-shaped cylinder 130 is not limited. For example, the length of the mirror pattern 121 is the same or shorter than the length of the mirror pattern 121. In the case where the cylinder UG has a county () shorter than the length of the prism _121, the length of each of the individual labor bodies 13G of the single-column can be arranged on the prism _121 (the financial phase... and the same for each length) Heterosome 13 (). _, the square strips are distributed in a density that meets the range described below. In addition, the 'column m can be provided in the form of a vertical cylinder, that is, the cylinder no is turned on and below. The cross-sectional area of the column no having a cross-sectional area of 1 can be increased toward the lower end of the _ 130. That is, the column 6 can be provided in the form of a truncated triangular pyramid or a head-cone. The figure has a reduced profile of the bevel. In the V state of (4), the cylinder m is provided as a headed three () cone ' with a truncated upper portion and in the case of (b) (d) 130 is provided by _. In this case, the cylinder] 3 bis = can be rounded, and / or can be formed on the upper portion of the truncated portion of the cylinder 13G 201027137 structure. It is allowed to put the cylinder m, thus increasing the production speed and increasing the easy release of the grain. The lower the no, the lower the anti-friction effect. At the same time, the more the cylinder is in the optical plane, the distance between the other and the optical plate i. Increasing, and increasing the total thickness of the backlight unit 70. Table i shows that the high yield of the cylinder 13 and the end of the cylinder maintain its filament shape (hereinafter referred to as "tip elasticity $. ❹
如表！所示，柱體⑽越高，尖端彈性越佳。在背^=之 厚度的考量中’柱體130較佳是具有比圖案層12〇之高度大 0.5卿至50卿的高度。 又 【表1】 柱 體 南 度 0.5-2(iim) 2-6("m) 6-8(庫） 8-10(μιη) ------ 10-20(jum) 20-50(μπι) 尖 端 彈 性 15(g) 2〇(g) 100(g) 180(g) 230(g) 300(g) 如果柱體130以較低密度分布，則光學平板丨00對摩擦 的抵抗性越低。如果柱體130以較高密度分布，則降低亮 度。所分布之柱體130的密度被定義為柱體130所佔面積相 201027137 對於圖案層120之總面積的比率。在示範性光學平板1〇〇 中，在所分布之柱體130的密度及亮度之間的關係以方程式 1表示。 【方程式1】 G* = l+(G-l)x(l-d) = G-(G-l) xd 此處，d代表所分布之柱體的密度，G代表在光學平板 上未提供柱體的情況中的亮度增益，及G，代表在光學平板 上以密度d分布柱體的情況中的亮度增益。例如，如果所分 布之柱體的密度(d)為1%，則G，為1.495，及如果所分布之 柱體的密度(d)為3%，則G，為1.485。據此，使用在所分布 之柱體密度及亮度增益之間的關係，可決定適合不同應用的 所分布之柱體的最佳密度。 表2及表3顯示在所分布之柱體13〇的密度及尖端彈性 之間的關係’及在所分布之柱體丨30的密度及光學平板的亮 度之間的關係。表3中，顯示亮度為相對於未在光學平板上 提供柱體130之情況的相對亮度。如表2所示，密度13〇越 兩，尖端彈性越大。如表3所示，密度越高，亮度越低。因 此，柱體130必須在增加尖端彈性及降低亮度的考量下以預 定密度分布。 14 201027137 【表2】 柱體 0.05% 0.2% 0.55% 1.1% 2% 2.5% 20% 35% 密度 尖端 70 100 180 610 630 655 670 700 彈性 -—--- 【表3】Such as the table! As shown, the higher the cylinder (10), the better the tip elasticity. In the consideration of the thickness of the back surface, the column 130 preferably has a height of 0.5 to 50 angstroms larger than the height of the pattern layer 12A. Also [Table 1] Column south degree 0.5-2 (iim) 2-6 ("m) 6-8 (library) 8-10 (μιη) ------ 10-20 (jum) 20-50 (μπι) Tip Elasticity 15(g) 2〇(g) 100(g) 180(g) 230(g) 300(g) If the cylinder 130 is distributed at a lower density, the resistance of the optical plate 丨00 to friction The lower. If the cylinders 130 are distributed at a higher density, the brightness is lowered. The density of the distributed cylinder 130 is defined as the ratio of the area of the area occupied by the cylinder 130 to 201027137 for the total area of the pattern layer 120. In the exemplary optical plate 1 ,, the relationship between the density and the brightness of the distributed cylinder 130 is expressed by Equation 1. [Equation 1] G* = l+(Gl)x(ld) = G-(Gl) xd where d represents the density of the column being distributed, and G represents the brightness in the case where no cylinder is provided on the optical plate Gain, and G, represent the luminance gain in the case where the cylinder is distributed at a density d on an optical plate. For example, if the density (d) of the column to be distributed is 1%, then G is 1.495, and if the density (d) of the column to be distributed is 3%, then G is 1.485. Accordingly, using the relationship between the density of the column and the gain of the distribution, the optimum density of the distributed cylinders for different applications can be determined. Tables 2 and 3 show the relationship between the density of the column 13 分布 and the tip elasticity ′ and the relationship between the density of the column 丨 30 distributed and the brightness of the optical plate. In Table 3, the brightness is shown as relative brightness with respect to the case where the cylinder 130 is not provided on the optical plate. As shown in Table 2, the higher the density of 13 turns, the greater the tip elasticity. As shown in Table 3, the higher the density, the lower the brightness. Therefore, the cylinder 130 must be distributed at a predetermined density in consideration of increasing tip elasticity and reducing brightness. 14 201027137 [Table 2] Column 0.05% 0.2% 0.55% 1.1% 2% 2.5% 20% 35% Density Tip 70 100 180 610 630 655 670 700 Elastic ----- [Table 3]
從實驗得知’如果柱體13〇以〇〇5%或以下的密度分 布’則尖端雑不足’致錄體13〇無法用作實際的支撐 層。相反地，如果柱體13〇以預定密度以上的密度分布，例 如，如果所分布之柱體130的密度超過35%，則亮度大體上 減y、根據这些結果，柱體130較佳是以約〇 至35%的 密度範圍分布。在此情況下，所分布之柱體13〇的密度被定 義為柱體130所佔面積相對於光學平板之總面積的比率。 較佳是，將柱體130的最大寬度設定為相對於圖案層 201027137 120之突出121a的間距的〇 5%至·%。柱體13〇相對於圖 案層12G之間距的最大寬度可影響在成品(即，對應的背 單兀)上對柱體130的察覺度。詳言之’如果柱體130之寬 度相對於圖案層120之間距的比率超過5〇〇%，柱體⑽將 造成起泡縣，目而使概晶顯示H外觀降級。相反地，如 果柱體130之寬度相對於圖案層12〇之間距的比率低於 0.5/〇’將增加柱體13〇的縱橫比，造成壓印期間釋放製程的 困難。例如’柱體130較佳是具有最大寬度約〇 2卿至· e _，及在柱體130之間的間距較佳是約10卿至1000卿。 同時’圖案層120及柱體U0係藉由以下方式形成：在 底層110上塗上樹脂溶液’然後固化樹脂溶液並用主模按壓 • 樹脂塗布的表面。在此情況下，在基部基板上形成的圖案模 • 上堆疊柱模，即可製造主模。以此方式，與同時製造枝握月 圖案模的情況相t匕，可精巧地製造柱模。據此，在透過主模 製造柱體130時，可均勻地提供柱體13〇。 、 ❹ 此外’可另外在柱體130的突出末端部分上形成擴散圖 案131。擴政圖案131可實施為上述光學結構。擴散圖案m 擴散通過柱體130的光，致使光可均勻地人射在堆疊在柱體 130上的另—光學平板1()。據此’如果在背光單元中採用此 . 種，學平板〗〇〇，可增強背光單元的光學效率。可以各種形 式提供擴散圖案13卜例如，擴散圖案131可提供為複數個 凸面型透鏡，致使防止在另一光學平板1〇的下表面上 摩擦。 " 201027137 一圖7為顯不第二示範性光學平板的橫截面圖，及圖8為 顯=圖7之示範性光學平板的平面圖。下文中，將說明第二 =範性光學平板及第一示範性光學平板之間的差異。第一示 範性光學平板的描述適用於第二示範性光學平板。 如圖7及8所示，第二示範性光學平板2〇〇包括底層 210及在底層210上形成且具有起伏圖案的圖案層22〇。起 伏圖案可以是微透鏡圖案221。底層210可提供為具有預定 〇 厚度的薄膜型，並可由透光性材料形成。底層210由聚對苯 二甲酸二乙酯(PET)形成。 微透鏡圖案221可以各種能夠透過散射均勻地分散光 的形式來提供。例如，微透鏡圖案221包括複數個重複配置 • 的凸面型微透鏡221a。術語微透鏡221a是指微尺寸的透 鏡。微透鏡221a可具有圓形橫截面或橢圓形橫截面。 Θ 微透鏡圖案221可包括複數個相同尺寸的微透鏡。然 而，如圖7及8所示，微透鏡圖案221可包括複數個具有不 同尺寸的微透鏡，致使發揮最大的擴散效率。 與第一示範性圖案層120相似，圖案層220可由具有預 • 定透射率及折射率的黏著劑樹脂形成。圖案層220可由不同 於底層21〇的材料形成，或可由底層210的相同材料形成。 複數個柱體230係形成於圖案層220上並突出超過圖案 201027137 層120中最尚微透鏡221a之咼度的高度。圖案岸a。古 度被界U突出22la的高度。與第—示範性光^平板: 相似’諸如擴散圖案23i的光學結構可形成於柱體现 出末端部分上。可以與第-示範性光學平板刚相似 提供第二示範性光學平板200。 》 如果在圖案層22〇上堆疊另-光學平板2〇，則柱體⑽ 的突出上方部分與另-光學平板20的下表面接觸，以防止 〇 目案層22G接觸另一光學平板20。亦即，柱體230防止在 另一光學平板20的下表面上因微透鏡221a而發生摩擦，或 防止微透鏡221a因摩擦而損壞。 τ〆 在圖案層220上堆疊作為另一光學平板2〇的稜鏡片的 情況中’柱體230變更入射至稜鏡片中之光的光學路徑，藉 此增強聚集在稜鏡>{上之光的光學效率。光學路徑將參考圖 9及10來說明。圖9為顯示示範性光學平板之光學路捏的 視圖，及圖10為顯示比較性光學路徑的視圖。 如圖9及1〇所示，與示範性光學平板不同，比較性光 學路徑沒有柱體230。在比較性光學平板中，光可相對於稜 鏡片的發射表面被全反射或傾斜地發射。然而，在示範性光 子平板中t更入射於稜鏡片之光的角度，致使光垂直於棱 鏡片的發射表面發射。 據此’示範性光學平板實現稜鏡片的較高光學效率。此 201027137 外，填充因數效應可因示範性柱體230而改良，致使增強光 學效率。填充因數代表微透鏡221a及柱體230所佔面積相 對於光學平板200之總面積的比率。 如果在液晶顯示器中採用此種光學平板2〇〇，將增強從 背光單元傳輸至液晶面板之螢幕之光的亮度。就此而言，示 範性光學平板200改良了明亮色彩的表現。 © 圖11為顯示示範性背光單元的橫截面圖》 如圖11所示，示範性背光單元1000包括燈1100、光導 板1200、第一光學平板π〇〇、及第二光學平板14〇〇。反射 片1500提供於背光單元1〇0〇的最下方部分上。 燈1100用作發光的光源。在燈1100安裝於背光單元 1000之側面的情況中，光導板12〇〇導引及分散從燈11〇〇 ® 發射的光。例如，在液晶顯示器中採用背光單元1000的情 況中’光導板1200在液晶面板的整個螢幕上導引從燈1100 發射的光並分散此光。在此情況下，另外提供於背光單元 1000中的反射片1500將從燈1100發射的光反射至液晶面 板的榮幕上。 第一光學平板1300擴散或聚集從光導板1200入射的 光。可類似於第一示範性光學平板1〇〇或第二示範性光學平 板200提供第一光學平板1300。亦即，第一光學平板boo 201027137 2起伏圖案可以是包括選自以下項目中任何 二3】=如棱鏡)、擴散圖案(諸如透鏡)、雙:透; 的複合圖案：聚括至少兩個選自以下項目 雙凸透鏡嶋細、咖_如透鏡）、 Ο 光第—示範性光學平板⑽或第二示範性 先千千板通^供第—光學平板測的情況中，如果第二 光學平斤板14_#在第—光科板丨遍上，财獲得在第 示範f生光學平板及第二示範性光學平板中所描述的優 點。同時’第二光學平板刚可以是棱鏡片、擴散片、保 護片、微透鏡片或雙凸透鏡片。 第一光學平板1300堆疊在光導板1200上，以擴散從光 導板1200入射的光或將此光提供至液晶面板。間隔物121〇 從光導板1200的表面突出’及第一光學平板13〇〇堆疊在間 隔物1210上。當第一光學平板13〇〇堆疊在光導板12〇〇上 時’間隔物1210防止在光導板1200及第一光學平板1300 之間發生滲濕現象。此種間隔物1210使用不同於「柱體」 的術語稱呼，但具有相同於柱體的功能。 據此，防止因滲濕所引起的光學干涉。此外，可省去為 防止渗濕在第一光學平板1300的下表面上執行的塗布處 理，因而降低製造期間所需的製程步驟數量及製造成本。 20 201027137 此外’間隔物1210 ’亦即柱體，允許在第一光學平板 1300及光導板1200之間形成空氣腔’藉此增強亮度。亦即， 如果從光導板1200入射的光前進通過具有相對低密度的空 氣腔並朝向具有相對高密度的第一光學平板1〇行進，將使 光再循環及折射且最後聚焦在第一光學平板1300的發射表 面上，因而增強液晶顯示器的亮度。 同時’在不脫離本發明範疇下，可以各種形狀、高度、 φ 分布提供間隔物1210，亦即柱體。 雖然未顯示，另一示範性背光單元可以是直下式背光單 元，其包括用於擴散從燈1100發射之光的擴散板而非光導 板1200。此外，擴散板具有從擴散板12⑻之表面突出的間 隔物1210 ’及第一光學平板1300堆曼在間隔物121〇上。 間隔物mo提供先前示範性光學平板之效應的相同效應。 0 = 12至16為顯示在另—示紐背光單元巾堆疊之平板 的組怨的橫截面圖。將關於堆疊形成顯示裝置背光單元之平 板的結構’制本示範性背光單元。在此不顯示本技術中一 组態的描述，一般描述將適用於參考圖10的示範 如圖12至16所不，顯示裝置包括顯示面板p及背 示面板/是因接收背光單元(BLU)的光而顯示 〜兀^ ，及可貫施為非發射型元件，如LCD面板。此 201027137 麵示面板p係以各種形式提供，且並不限於此。背光單元 (BLU)係實施為側光式背光單元，其中光源l布置在顯示面 板P的侧面’或貫施為直下式背光單元，其中光源[布置在 顯示面板P下^。錢並且可實施祕光二極體 (LED)或有機發光二極體(〇LED)。 圖12及13為顯示侧光式背光單元的視圖，其中光源l 布置在顯不面板P的側面。在圖12中，背光單元包括依序 〇 從老光早元底部堆疊的反射片S5、光導板S4、第二光學平 板S3、第一光學平板S2及面板P。不同於圖12，圖13中 f不的背光單元可另外包括反射型偏光板及/或在第一光學 平板S2及面板P之間的第三光學平板S卜如圖12及13所 示，第一光學平板S2及第二光學平板S3的起伏圖案可以是 包括選自以下項目中任何一項的單一圖案：聚光圖案(諸如 棱鏡)、擴散圖案(諸如透鏡）、雙凸透鏡狀圖案及三角錐圖 案，或可以是包括至少兩個選自以下項目的複合圖案：聚光 P 圖案(諸如棱鏡）、擴散圖案(諸如透鏡）、雙凸透鏡狀圖案及 二角錐圖案。此外，第一光學平板S2及第二光學平板S3 中的至少一個可包括柱體或間隔物。光導板S4可包括柱 體。此外，可用擴散板取代光導板S4，或可將擴散板附加 至光導板S4。在此情況下’與光導板84相似，擴散板可包 括柱體。同時，第一光學平板S2及第二光學平板S3可以根 才康所需光學性質的順序堆疊。如圖12及13所示，第二光學 平板S3可布置於第一光學平板S2下方。或者，第二光學平 板S3 布置在第一光學平板S2上。 201027137 類似於第—光學平板及第二光學平板，第三光學平板 S2的起伏圖案可以是包括選自以下項目中任何一項的單一 圖案：聚光圖案(諸如棱鏡）、擴散圖案(諸如it鏡）、雙凸透 . 鏡狀圖案及三角錐圖案，或可以是包括至少兩個選自以下項 目的複合圖案：聚光圖案(諸如棱鏡)、擴散圖案(諸如透鏡）、 雙凸透鏡狀圖案及三角錐圖案。 同時’當第三光學平板或反射型偏光板與第一及第二附 〇 減學平板—起布置時，第三絲平板歧射型偏光板係以 各種配置布置。 圖14、15及16為顯示直下式背光單元的視圖，其中光 源L布置於面板p下方。如圖14所示，反射片％布置於 光源L下方，擴散板S4、第二光學平板S3及第一光學平板 S2依序堆疊在光源L上，及面板p布置在第一光學平板S2 上。與圖14中顯示的背光單元不同，圖15中顯示的背光單 元更包括在第一光學平板S2及面板P之間形成的反射型偏 光板S1 ’及圖16中顯示的背光單元更包括在第一光學平板 S2及面板P之間形成的另一第二光學平板％。如圖14及 16所示，第一光學平板S2及第二光學平板S3可以是包括 選自以下項目中一項的單一光學平板：擴散片、稜鏡片、微 透鏡片及雙凸透鏡片，或可以是包括至少兩個選自以下項目 的複合光學平板：擴散、稜鏡片、微透鏡片及雙凸透鏡片。 在此情況下，弟一光學平板S2及第二光學平板S3中的至少 一個可包括上述柱體。視需要，擴散板S4可包括上述柱體， 及可用光導板取代擴散板S4，或可將光導板附加至擴散板 23 201027137 S4。在此情況下’擴散板可包括上述柱體 >夂ΐΐ已經說縣干示範性具體實施例。但應明白，可進 ====== ::r二=等在效物， 像匕其匕實施例均在以下中請專利範_範脅中。 Ο ❹ 【圖式簡單說明】 ==顯:第—示範性光學平板的橫戴面圖。 二為1之示範性光學平板的平面圖。 圖4為/^·範性光學平板中柱體分布的橫截面圖。 橫戴面圖。4不不祕光學平板之柱體之末端部分形狀的 圖5為顯；- 圖6為紐、-不乾性光學平板之方條形柱體的透視圖。 圖。 “示示範性光學平板中具有斜面之柱體的透視 圖7為顯-银__ 圖8為^ =第二示範性光學平板的橫截面圖。 圖9為^不圖7之示範性光學平板的平面圖。 圖1〇 ^1不圖7之示範性光學平板之光學路偟的視圖。 路偟的視圖。肩不用於與圖9之光學路偟比較之比較性光學 圖11為親_ _ 圖12至頌不示範性背光單元的橫截面圖。 的組態的横栽 顯不在另—示範性背光單元中堆疊之平板 24 201027137 【主要元件符號說明】 10、20、100、200、1300 光學平板It has been experimentally known that if the column 13 is distributed at a density of 5% or less, the tip is insufficient. The recording body 13 cannot be used as an actual supporting layer. Conversely, if the cylinders 13〇 are distributed at a density above a predetermined density, for example, if the density of the distributed pillars 130 exceeds 35%, the luminance is substantially reduced by y. According to these results, the pillars 130 are preferably about 〇 to a density distribution of 35%. In this case, the density of the distributed cylinders 13A is defined as the ratio of the area occupied by the cylinders 130 to the total area of the optical plates. Preferably, the maximum width of the column 130 is set to 〇 5% to % with respect to the pitch of the protrusions 121a of the pattern layer 201027137 120. The maximum width of the space between the cylinders 13A relative to the pattern layer 12G can affect the perception of the cylinders 130 on the finished product (i.e., the corresponding backsheet). In detail, if the ratio of the width of the cylinder 130 to the distance between the pattern layers 120 exceeds 5%, the cylinder (10) will cause a bubble-like county, and the crystal will appear to degrade the appearance of H. Conversely, if the ratio of the width of the cylinder 130 to the distance between the pattern layers 12 低于 is less than 0.5 / 〇 ', the aspect ratio of the cylinder 13 增加 is increased, which causes difficulty in releasing the process during imprinting. For example, the column 130 preferably has a maximum width of about 卿 2 qing to e _, and the spacing between the columns 130 is preferably from about 10 qing to 1000 qing. Meanwhile, the pattern layer 120 and the pillar U0 are formed by applying a resin solution on the underlayer 110 and then curing the resin solution and pressing the resin-coated surface with the main mold. In this case, the master mold can be manufactured by stacking the pillar molds on the pattern mold formed on the base substrate. In this way, the cylindrical mold can be delicately manufactured in contrast to the case where the moon pattern pattern is simultaneously produced. According to this, when the column 130 is manufactured through the main mold, the column 13〇 can be uniformly supplied. Further, a diffusion pattern 131 may be additionally formed on the protruding end portion of the cylinder 130. The expansion pattern 131 can be implemented as the above optical structure. The diffusion pattern m diffuses light passing through the cylinder 130, so that the light can be uniformly incident on the other optical plate 1 () stacked on the cylinder 130. According to this, if this is used in the backlight unit, the optical efficiency of the backlight unit can be enhanced. The diffusion pattern 13 may be provided in various forms. For example, the diffusion pattern 131 may be provided as a plurality of convex type lenses, so as to prevent rubbing on the lower surface of the other optical flat plate 1〇. " 201027137 A Figure 7 is a cross-sectional view showing a second exemplary optical plate, and Figure 8 is a plan view of an exemplary optical plate of Figure 7. Hereinafter, the difference between the second = normal optical plate and the first exemplary optical plate will be explained. The description of the first exemplary optical plate is applicable to the second exemplary optical plate. As shown in Figures 7 and 8, the second exemplary optical plate 2 includes a bottom layer 210 and a pattern layer 22 formed on the bottom layer 210 and having an undulating pattern. The undulating pattern may be a microlens pattern 221. The underlayer 210 may be provided in a film type having a predetermined thickness of 〇 and may be formed of a light transmissive material. The bottom layer 210 is formed of polyethylene terephthalate (PET). The microlens pattern 221 can be provided in various forms capable of uniformly dispersing light by scattering. For example, the microlens pattern 221 includes a plurality of convex type microlenses 221a of a repetitive arrangement. The term microlens 221a refers to a micro-sized lens. The microlens 221a may have a circular cross section or an elliptical cross section. The Θ microlens pattern 221 may include a plurality of microlenses of the same size. However, as shown in Figures 7 and 8, the microlens pattern 221 may include a plurality of microlenses having different sizes, resulting in maximum diffusion efficiency. Similar to the first exemplary pattern layer 120, the pattern layer 220 may be formed of an adhesive resin having a predetermined transmittance and refractive index. The pattern layer 220 may be formed of a material different from the underlayer 21, or may be formed of the same material of the underlayer 210. A plurality of pillars 230 are formed on the pattern layer 220 and protrude above the height of the pattern 201027137 layer 120 which is the most common of the microlenses 221a. Pattern shore a. The ancients are bounded by the height of 22la. Similar to the first exemplary optical panel: an optical structure such as the diffusion pattern 23i may be formed on the end portion of the pillar. A second exemplary optical plate 200 can be provided similar to the first exemplary optical plate. If the other-optical plate 2 is stacked on the pattern layer 22, the overhanging portion of the column (10) is in contact with the lower surface of the other-optical plate 20 to prevent the cymbal layer 22G from contacting the other optical plate 20. That is, the cylinder 230 prevents rubbing on the lower surface of the other optical flat plate 20 by the microlens 221a, or prevents the microlens 221a from being damaged by friction. In the case where τ is stacked on the pattern layer 220 as a cymbal of another optical plate 2', the column 230 changes the optical path of the light incident into the cymbal, thereby enhancing the light collected on the 稜鏡> Optical efficiency. The optical path will be explained with reference to Figs. Figure 9 is a view showing an optical path pinch of an exemplary optical plate, and Figure 10 is a view showing a comparative optical path. As shown in Figures 9 and 1B, unlike the exemplary optical plate, the comparative optical path has no cylinder 230. In a comparative optical plate, light can be totally or obliquely emitted relative to the emitting surface of the lenticular lens. However, in an exemplary photonic plate, the angle at which light is incident on the cymbal is such that the light is emitted perpendicular to the emitting surface of the lenticular lens. According to this, the exemplary optical plate achieves a higher optical efficiency of the cymbal. In addition to this 201027137, the fill factor effect can be improved by the exemplary cylinder 230, resulting in enhanced optical efficiency. The fill factor represents the ratio of the area occupied by the microlenses 221a and the pillars 230 to the total area of the optical plate 200. If such an optical flat panel is used in a liquid crystal display, the brightness of light transmitted from the backlight unit to the screen of the liquid crystal panel will be enhanced. In this regard, the exemplary optical plate 200 improves the performance of bright colors. © Fig. 11 is a cross-sectional view showing an exemplary backlight unit. As shown in Fig. 11, an exemplary backlight unit 1000 includes a lamp 1100, a light guide plate 1200, a first optical plate π, and a second optical plate 14A. The reflective sheet 1500 is provided on the lowermost portion of the backlight unit 1〇0〇. The lamp 1100 is used as a light source for illumination. In the case where the lamp 1100 is mounted on the side of the backlight unit 1000, the light guide plate 12 〇〇 guides and distributes the light emitted from the lamp 11 〇〇 ® . For example, in the case where the backlight unit 1000 is employed in a liquid crystal display, the light guide plate 1200 guides light emitted from the lamp 1100 over the entire screen of the liquid crystal panel and disperses the light. In this case, the reflection sheet 1500 additionally provided in the backlight unit 1000 reflects the light emitted from the lamp 1100 onto the glory of the liquid crystal panel. The first optical flat plate 1300 diffuses or collects light incident from the light guiding plate 1200. The first optical plate 1300 can be provided similar to the first exemplary optical plate 1 or the second exemplary optical plate 200. That is, the first optical plate boo 201027137 2 undulating pattern may be a composite pattern including any two selected from the following items: a prism, a diffusion pattern (such as a lens), a double: transparent; In the case of the following items: lenticular lens, coffee-like lens, illuminating-exemplifying optical plate (10) or second exemplary first-thousand-thick plate for the first optical plate measurement, if the second optical The board 14_# is on the first optical board, and the advantages described in the first exemplary optical flat panel and the second exemplary optical flat panel are obtained. Meanwhile, the second optical plate may be a prism sheet, a diffusion sheet, a protective sheet, a microlens sheet or a lenticular sheet. The first optical flat plate 1300 is stacked on the light guiding plate 1200 to diffuse light incident from the light guiding plate 1200 or to supply the light to the liquid crystal panel. The spacer 121 is protruded from the surface of the light guiding plate 1200 and the first optical flat plate 13 is stacked on the spacer 1210. When the first optical flat plate 13 is stacked on the light guide plate 12, the spacer 1210 prevents moisture from colliding between the light guide plate 1200 and the first optical plate 1300. Such a spacer 1210 is referred to by a term different from "cylinder" but has the same function as a cylinder. According to this, optical interference due to moisture is prevented. Further, the coating process performed on the lower surface of the first optical flat plate 1300 to prevent moisture from being wetted can be omitted, thereby reducing the number of process steps and manufacturing costs required during manufacturing. 20 201027137 Furthermore, the 'spacer 1210', i.e., the cylinder, allows an air cavity to be formed between the first optical plate 1300 and the light guide plate 1200 to enhance brightness. That is, if light incident from the light guide plate 1200 is advanced through an air cavity having a relatively low density and traveling toward the first optical plate 1 having a relatively high density, the light will be recirculated and refracted and finally focused on the first optical plate. The emitting surface of 1300 thus enhances the brightness of the liquid crystal display. At the same time, spacers 1210, i.e., cylinders, may be provided in a variety of shapes, heights, and φ distributions without departing from the scope of the invention. Although not shown, another exemplary backlight unit may be a direct type backlight unit that includes a diffuser plate for diffusing light emitted from the lamp 1100 instead of the light guide plate 1200. Further, the diffusion plate has a spacer 1210' protruding from the surface of the diffusion plate 12 (8) and the first optical plate 1300 is stacked on the spacer 121. The spacer mo provides the same effect of the effects of the previous exemplary optical plate. 0 = 12 to 16 are cross-sectional views of the grievances displayed on the flat panel of the other-shower backlight unit. The exemplary backlight unit will be fabricated with respect to a structure in which a flat panel of a backlight unit of a display device is stacked. The description of a configuration in the present technology is not shown here, and the general description will be applied to the exemplary embodiment of FIG. 10 as shown in FIGS. 12 to 16. The display device includes the display panel p and the back panel/By receiving backlight unit (BLU). The light is displayed as ~兀^, and can be applied as a non-emissive component such as an LCD panel. This 201027137 face panel p is provided in various forms and is not limited thereto. The backlight unit (BLU) is implemented as an edge-lit backlight unit in which the light source 1 is disposed on the side of the display panel P or as a direct-lit backlight unit, wherein the light source is disposed under the display panel P. Money can also be implemented as a light-emitting diode (LED) or an organic light-emitting diode (〇LED). 12 and 13 are views showing an edge-lit backlight unit in which the light source 1 is disposed on the side of the display panel P. In Fig. 12, the backlight unit includes a reflection sheet S5, a light guide plate S4, a second optical plate S3, a first optical plate S2, and a panel P which are sequentially stacked from the bottom of the old light. Different from FIG. 12, the backlight unit of FIG. 13 may additionally include a reflective polarizing plate and/or a third optical flat plate S between the first optical flat plate S2 and the panel P, as shown in FIGS. 12 and 13, The undulating pattern of an optical plate S2 and the second optical plate S3 may be a single pattern including any one selected from the group consisting of a concentrating pattern (such as a prism), a diffusion pattern (such as a lens), a lenticular pattern, and a triangular pyramid. The pattern may be a composite pattern comprising at least two items selected from the group consisting of a concentrated P pattern (such as a prism), a diffusion pattern (such as a lens), a lenticular pattern, and a double pyramid pattern. Further, at least one of the first optical plate S2 and the second optical plate S3 may include a cylinder or a spacer. The light guide plate S4 may include a cylinder. Further, the light guide plate S4 may be replaced with a diffusion plate, or the diffusion plate may be attached to the light guide plate S4. In this case, similar to the light guide plate 84, the diffusion plate may include a cylinder. At the same time, the first optical plate S2 and the second optical plate S3 can be stacked in the order of the optical properties required. As shown in Figures 12 and 13, the second optical plate S3 can be disposed below the first optical plate S2. Alternatively, the second optical plate S3 is disposed on the first optical plate S2. 201027137 Similar to the first-optical plate and the second optical plate, the undulating pattern of the third optical plate S2 may be a single pattern including any one selected from the group consisting of: a concentrating pattern (such as a prism), a diffusion pattern (such as a finder) a double convex. a mirror pattern and a triangular pyramid pattern, or may be a composite pattern including at least two items selected from the group consisting of a condensed pattern (such as a prism), a diffusion pattern (such as a lens), a lenticular pattern, and a triangle. Cone pattern. Meanwhile, when the third optical flat plate or the reflective polarizing plate is disposed together with the first and second auxiliary reduction plates, the third wire flat polarizing type polarizing plate is arranged in various configurations. 14, 15 and 16 are views showing a direct type backlight unit in which a light source L is disposed below the panel p. As shown in Fig. 14, the reflection sheet % is disposed under the light source L, the diffusion plate S4, the second optical plate S3, and the first optical plate S2 are sequentially stacked on the light source L, and the panel p is disposed on the first optical plate S2. Unlike the backlight unit shown in FIG. 14, the backlight unit shown in FIG. 15 further includes a reflective polarizing plate S1' formed between the first optical flat panel S2 and the panel P, and the backlight unit shown in FIG. Another second optical plate % formed between an optical plate S2 and the panel P. As shown in FIGS. 14 and 16, the first optical plate S2 and the second optical plate S3 may be a single optical plate including one selected from the group consisting of a diffusion sheet, a cymbal sheet, a lenticular sheet, and a lenticular lens sheet, or may be It is a composite optical plate comprising at least two items selected from the group consisting of a diffusion, a cymbal, a lenticular sheet, and a lenticular sheet. In this case, at least one of the optical flat plate S2 and the second optical flat plate S3 may include the above-described cylinder. The diffusion plate S4 may include the above-described pillars as needed, and the diffusion plate S4 may be replaced with a light guide plate, or the light guide plate may be attached to the diffusion plate 23 201027137 S4. In this case, the 'diffusion plate may include the above-described column > 夂ΐΐ has already been described as an exemplary embodiment of the county. However, it should be understood that it is possible to enter ====== ::r two = etc. in the effect, such as the 匕 匕 匕 匕 均 均 均 专利 专利 专利 专利 专利 专利 专利 专利 专利 。 。 。 。 。 。 。 Ο ❹ [Simple description of the diagram] == Display: The cross-sectional view of the first-exemplary optical plate. A plan view of an exemplary optical plate of two. Figure 4 is a cross-sectional view of the distribution of the cylinders in a conventional optical plate. Horizontal wear surface. 4 The shape of the end portion of the cylinder of the optical plate is not shown in Fig. 5; Fig. 6 is a perspective view of the square bar of the neon-and non-dry optical plate. Figure. "Perspective view 7 of a cylinder having a bevel in an exemplary optical plate is a display-silver__ Figure 8 is a cross-sectional view of the second exemplary optical plate. Figure 9 is an exemplary optical plate of Figure 7. Fig. 1 is a view of the optical path of the exemplary optical plate of Fig. 7. The view of the roller. The shoulder is not used for comparison with the optical path of Fig. 9. Fig. 11 is a pro__ 12 to 横截 not a cross-sectional view of the exemplary backlight unit. The configured traverse is not in the stack of the other exemplary backlight unit 24 201027137 [Main component symbol description] 10, 20, 100, 200, 1300 optical flat panel
110、210 120、220 121 121a 130、230 130a、130b、130c 131 ' 231 221 221a 1000 1100 1200、S4 1210 1300 > S2 1400、S3 1500、S5 P SI 底層 圖案層 棱鏡圖案 三角形棱鏡狀突出 柱體 光學結構 擴散圖案 微透鏡圖案 凸面型微透鏡 背光單元 燈 光導板/擴散板 間隔物 第一光學平板 第二光學平板 反射片 顯示面板 第三光學平板 25110, 210 120, 220 121 121a 130, 230 130a, 130b, 130c 131 ' 231 221 221a 1000 1100 1200, S4 1210 1300 > S2 1400, S3 1500, S5 P SI bottom layer pattern prism pattern triangular prism-shaped protruding cylinder Optical structure diffusion pattern microlens pattern convex type microlens backlight unit light guide plate/diffusion plate spacer first optical plate second optical flat plate reflective sheet display panel third optical plate 25