201109767 WP9803-C206-0941 31532twf.doc/n 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種複合結構與具有此複合結構的 觸控面板，且特別是有關於一種可改變介面反射狀態的複 合結構與具有此複合結構的觸控面板。 【先前技術】 • 目前，觸控面板大致可區分為電阻式、電容式、紅外 線式及超音波式等觸控面板，其中以電阻式觸控面板與電 容式觸控面板為最常見的產品。圖1繪示習知的觸控面板 的剖面圖。請參照圖1，習知的觸控面板1〇〇包括一第一 透明基板110、一第二透明基板120、一第一導電層130 與一第二導電層14〇 ’其中第一透明基板n〇配置於第二 透明基板120的一側且相隔一間隙G。第一導電層13〇配 置於第一透明基板11〇上且面向第二透明基板120，第二 導電層140配置於第二透明基板120上且面向第一透明基 板 110。 入射光線L由外部照射觸控面板10〇時，入射光線L 在第透明基板110的表面可能被反射而產生第一反射光 線L1。另外，入射光線l在第二透明基板12〇與間隙g 之間的介面上可能被反射而產生第二反射光線L2。當第一 反射光線L1以及第二反射光線l2的光程差呈現一特定關 係且實質上以相同路徑行進時，第一反射光線Li以及第 一反射光線L2彼此干涉的現象即可能令使用者看到牛頓 201109767 WP9803-C206-0941 31532twf.doc/n 環（Newton’s rings)現象。因此，習知的電阻式觸控面板 100易有視效不佳的問題。 '【發明内容】 本發明提供一種複合結構’可改變介面反射的狀態。 本發明提供一種觸控面板，可減輕牛頓環現象。 本發明提出一種複合結構’包括一基板以及一透光 層。基板具有一凹凸圖案β透光層配置於基板上並覆蓋凹 凸圖案，其中透光層的一第一折射率為Ν1，而基板的一第 二折射率為Ν2，且Ν1小於Ν2。 在本發明之一實施例中，透光層為一單層結構。 在本發明之一實施例中，當空氣的折射率為Na時， N1、N2 與 Na 符合公式 。 在本發明之一實施例中，當透光層為單層結構時，透 光層的厚度為Τ，而一入射光線的波長為又，且τ、入與201109767 WP9803-C206-0941 31532twf.doc/n VI. Description of the Invention: [Technical Field] The present invention relates to a composite structure and a touch panel having the same, and in particular to a changeable interface A composite structure in a reflective state and a touch panel having the composite structure. [Prior Art] Currently, touch panels can be roughly classified into resistive, capacitive, infrared, and ultrasonic touch panels. Among them, resistive touch panels and capacitive touch panels are the most common products. 1 is a cross-sectional view of a conventional touch panel. Referring to FIG. 1 , a conventional touch panel 1A includes a first transparent substrate 110 , a second transparent substrate 120 , a first conductive layer 130 , and a second conductive layer 14 ′′ The crucible is disposed on one side of the second transparent substrate 120 and separated by a gap G. The first conductive layer 13 is disposed on the first transparent substrate 11A and faces the second transparent substrate 120. The second conductive layer 140 is disposed on the second transparent substrate 120 and faces the first transparent substrate 110. When the incident light L is externally illuminated by the touch panel 10, the incident light L may be reflected on the surface of the first transparent substrate 110 to generate the first reflected light L1. In addition, the incident light ray l may be reflected on the interface between the second transparent substrate 12 and the gap g to generate the second reflected light L2. When the optical path differences of the first reflected light L1 and the second reflected light L2 exhibit a specific relationship and substantially travel in the same path, the phenomenon that the first reflected light Li and the first reflected light L2 interfere with each other may be viewed by the user. To Newton's 201109767 WP9803-C206-0941 31532twf.doc/n Ring (Newton's rings) phenomenon. Therefore, the conventional resistive touch panel 100 is susceptible to a problem of poor visual performance. [Explanation] The present invention provides a composite structure that changes the state of interface reflection. The invention provides a touch panel which can alleviate the phenomenon of Newton's ring. The present invention provides a composite structure 'comprising a substrate and a light transmissive layer. The substrate has a concave-convex pattern β. The light-transmitting layer is disposed on the substrate and covers the concave-convex pattern, wherein a first refractive index of the light-transmitting layer is Ν1, and a second refractive index of the substrate is Ν2, and Ν1 is smaller than Ν2. In an embodiment of the invention, the light transmissive layer is a single layer structure. In an embodiment of the invention, when the refractive index of air is Na, N1, N2 and Na conform to the formula. In an embodiment of the invention, when the light transmissive layer has a single layer structure, the thickness of the light transmissive layer is Τ, and the wavelength of an incident ray is again, and τ, 入
在本發明之一實施例中，凹凸圖案之相對凸起之處的 寬度或凹凸圖案之相對凹陷之處的寬度小於等於150微 深度或凹凸圖案之, 本發明提出一 層、一第二基板、. 在本發明之-實施财，凹凸_之相對凹陷之處的 之相對凸起之處的高度小於等於7微米。 一種觸控面板包括一第—基板、一透光 、一第一導電圖案、一第二導電圖案以及 201109767 WP9S03-C206-0941 31532twf.doc/n 多個間隔物。第一基板具有一凹凸圖案。透光層配置於第 一基板上並覆蓋凹凸圖案，其中透光層的一第一折射率為 N1，而第一基板的一第二折射率為N2，且N1小於N2。 弟一基板平行配置於第一基板的一側。第一導電圖案·配置-於第一基板上，並面向第二基板。第二導電圖案配置於第 二基板上，並面向第一基板。間隔物配置於第一導電圖案 與第二導電圖案之間。 .在本發明之一實施例中，透光層位於第一導電圖案與 第一基板之間。 在本發明之一實施例中’第一基板位於透光層與第一 導電圖案之間。 在本發明之一實施例中，透光層為一單層結構。 在本發明之一實施例中，當空氣的折射率為Na時， Nl、N2 與 Na 符合公式 Λα=Λ/#2χ_Α/α。 在本發明之一實施例中’透光層的厚度為Τ，而一入 射光線的波長為λ ’且Τ、λ與Ν1符合公式 π_(；ΙχΜ) 、 τ=~~r一χ(2π+1)，其中η為0或正整數。 在本發明之一實施例中，凹凸圖案之相對凸起之處的 寬度或凹凸圖案之相對凹陷之處的寬度小於等於15〇微 米。 在本發明之一實施例中，凹凸圖案之相對凹陷之處的 深度或凹凸圖案之相對凸起之處的高度小於等於7微米。 在本發明之一實施例中，第一基板或第二基板為一可 201109767 WP9803-C206-0941 31532twf.doc/n 撓性透光基板。 基於上述，由於本發明的透光層的第一折射率小於第 一基板的第二折射率，故入射光線由透光層入射到第一基 板時的介面·反射現象可被’降低i換言之，透光層可減吵人〜 射光線在第一基板的表面上所產生的反射光線的強度。如 此一來，當將本發明的複合結構應用在觸控面板中時，可 有助於減輕牛頓環現象。此外，基板上的凹凸圖案可打亂 入射光線在其表面上所產生的反射光線的規則性。如此一 來，這些反射光線之間的干涉行為不易呈現特定的規則， 而有助於減輕牛頓環現象。 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】 圖2繪示本發明一實施例之複合結構的剖面圖。圖3八 〜圖3D繪示圖2之複合結構的凹凸圖案的凸起（或凹槽 的多種外型。 胃 請參照圖2，本實施例之複合結構200包括一第一基 板210以及一透光層220。第一基板210具有一凹凸圖案 212，第一基板210的材質例如為玻璃或聚碳酸酉旨 (Polycarbonate，PC)等透光且具#支撐力的材料。在本實^ 例中，=凸圖案212是代表第一基板210的表面214所^ 有的一高低起伏結構，其可以是多個凸起212&或是多個^ 槽212b。實質上’凸起212a與凹槽212b在空間中是相對 201109767 WP9803-C206-0941 31532twf.doc/n 的結構，因此為簡明地表達相關描述，本實施例統一以凸 起212a來描述凹凸圖案212的結構。 在本實施例中，凸起212a的表面S (或凹槽212b的 : :’内壁)可為先滑面或粗糙面.。凸起212a ('或凹槽212杈)-.可. 呈半球狀（圖3A) '半橢圓狀（圖3B)、錐狀（圖3C、 圖3D)等適合的形狀，且凸起212a可為規則排列或不規 則排列。單一個凸起212a的寬度w(或凹槽212b的寬度） φ 例如小於等於15〇微米，且凸起212a的高度η (或凹槽 212b的深度）例如小於等於7微米。 在本實施例中，凹凸圖案212可使特定入射方向的入 射光線L在第一基板210的表面214上產生多個方向不同 的反射光線Lr ’且反射光線Lr的光程差彼此不同。換言 之，凹凸圖案212可以打亂入射光線l在第一基板21〇的 表面214上所產生的反射光線Lr的光程差。 透光層220配置於第一基板210上並覆蓋凹凸圖案 212，且透光層220的一第一折射率為N1，第一基板21〇 鲁的一弟—折射率為N2，且N1小於 N2。值得注意的是‘ 由於第一折射率小於第二折射率，因此，透光層22〇可減 少入射光線L在第一基板210的表面214發生介面反射的 機率。換言之，透光層220可減少入射光線L在第一基板 210的表面214上所產生的反射光線Lr的強度。 透光層220例如為一單層結構。在特定的折射率與厚 度條件下，透光層220的設計可以大幅地降低介面反射的 發生。舉例而言，當空氣的折射率為Na時，Ni、n2與 201109767 WP9803-C206-0941 31532twf.doc/nIn one embodiment of the present invention, the width of the concave-convex pattern relative to the convexity or the width of the concave-convex pattern is less than or equal to 150 micro-depth or the concave-convex pattern. The present invention proposes a layer and a second substrate. In the present invention, the height of the opposite portion of the concave and convex portions is relatively less than or equal to 7 μm. A touch panel includes a first substrate, a light transmissive film, a first conductive pattern, a second conductive pattern, and a plurality of spacers 201109767 WP9S03-C206-0941 31532 twf.doc/n. The first substrate has a concave-convex pattern. The light transmissive layer is disposed on the first substrate and covers the concave and convex pattern, wherein a first refractive index of the light transmissive layer is N1, and a second refractive index of the first substrate is N2, and N1 is less than N2. A substrate is disposed in parallel on one side of the first substrate. The first conductive pattern is disposed on the first substrate and faces the second substrate. The second conductive pattern is disposed on the second substrate and faces the first substrate. The spacer is disposed between the first conductive pattern and the second conductive pattern. In an embodiment of the invention, the light transmissive layer is between the first conductive pattern and the first substrate. In an embodiment of the invention, the first substrate is located between the light transmissive layer and the first conductive pattern. In an embodiment of the invention, the light transmissive layer is a single layer structure. In an embodiment of the invention, when the refractive index of air is Na, Nl, N2 and Na conform to the formula Λα=Λ/#2χ_Α/α. In an embodiment of the invention, the thickness of the light transmissive layer is Τ, and the wavelength of an incident ray is λ ' and Τ, λ, and Ν1 conform to the formula π_(;ΙχΜ), τ=~~r-χ(2π+ 1), where η is 0 or a positive integer. In an embodiment of the invention, the width of the concave-convex pattern relative to the convexity or the width of the concave-convex pattern of the concave portion is less than or equal to 15 μm. In an embodiment of the invention, the depth of the concave-convex pattern relative to the recess or the height of the concave-convex pattern relative to the convex portion is less than or equal to 7 μm. In an embodiment of the invention, the first substrate or the second substrate is a flexible light transmissive substrate that can be 201109767 WP9803-C206-0941 31532 twf.doc/n. Based on the above, since the first refractive index of the light transmissive layer of the present invention is smaller than the second refractive index of the first substrate, the interface reflection phenomenon when the incident light is incident on the first substrate from the light transmissive layer can be reduced, in other words, The light transmissive layer can reduce the intensity of the reflected light generated by the light on the surface of the first substrate. As a result, when the composite structure of the present invention is applied to a touch panel, it can contribute to the reduction of the Newton's ring phenomenon. In addition, the concavo-convex pattern on the substrate can disturb the regularity of the reflected light generated by the incident light on its surface. As a result, the interference behavior between these reflected rays is less likely to present a specific rule, which helps to alleviate the Newton's ring phenomenon. The above described features and advantages of the present invention will become more apparent from the description of the appended claims. Embodiments FIG. 2 is a cross-sectional view showing a composite structure according to an embodiment of the present invention. 3 to 3D illustrate the protrusions of the concave-convex pattern of the composite structure of FIG. 2 (or various shapes of the grooves. Please refer to FIG. 2, the composite structure 200 of the present embodiment includes a first substrate 210 and a transparent surface. The light-emitting layer 220. The first substrate 210 has a concave-convex pattern 212, and the material of the first substrate 210 is, for example, a light-transmitting and #supporting material such as glass or polycarbonate (PC). The = convex pattern 212 is a high and low relief structure representing the surface 214 of the first substrate 210, which may be a plurality of protrusions 212 & or a plurality of grooves 212b. Substantially 'protrusions 212a and 212b In the space, it is a structure relative to 201109767 WP9803-C206-0941 31532twf.doc/n, and therefore, in order to succinctly express the related description, the present embodiment uniformly describes the structure of the concave-convex pattern 212 by the protrusion 212a. In the present embodiment, the convex The surface S of the 212a (or the inner wall of the groove 212b: : 'the inner wall) may be a first slip surface or a rough surface. The protrusion 212a ('or the groove 212杈) -. may be hemispherical (Fig. 3A) 'half Suitable shapes such as elliptical (Fig. 3B), tapered (Fig. 3C, Fig. 3D), and the protrusions 212a may be regularly arranged or Regularly arranged, the width w of the single protrusion 212a (or the width of the groove 212b) φ is, for example, 15 μm or less, and the height η of the protrusion 212a (or the depth of the groove 212b) is, for example, 7 μm or less. In the embodiment, the concave-convex pattern 212 can generate incident light rays L of a specific incident direction on the surface 214 of the first substrate 210 to generate a plurality of different directions of reflected light Lr′ and the optical path differences of the reflected light Lr are different from each other. In other words, the concave-convex pattern The optical path difference of the reflected light Lr generated by the incident light ray l on the surface 214 of the first substrate 21 is disturbed. The light transmissive layer 220 is disposed on the first substrate 210 and covers the concave-convex pattern 212, and the light-transmitting layer 220 The first refractive index of the first substrate 21 is N1, the refractive index of the first substrate 21 is N2, and N1 is smaller than N2. It is worth noting that since the first refractive index is smaller than the second refractive index, the light transmitting layer 22〇 reduces the probability of incident reflection of the incident light L on the surface 214 of the first substrate 210. In other words, the transparent layer 220 can reduce the intensity of the reflected light Lr generated by the incident light L on the surface 214 of the first substrate 210. Light transmission 220 is, for example, a single layer structure. Under specific refractive index and thickness conditions, the design of the light transmissive layer 220 can greatly reduce the occurrence of interface reflection. For example, when the refractive index of air is Na, Ni, n2 and 201109767 WP9803-C206-0941 31532twf.doc/n
Na可符合公式xTVicz。此外，當透光層220的厚 度為T ’且一入射光線的波長為^時，、T與λ符合公 式Τ = ·^^χ(2”+1) ’其中4為0·或正整數。.在此，，τ例如 為四分之一波長光學厚度(quarter wavelength optical film thickness)的奇數倍。 圖4繪示本發明一實施例之複合結構的反射率與入射 光線的波長的關係模擬圖。圖5繪示本發明一實施例之玻 璃基板的反射率與入射光線的波長的關係模擬圖。 圖4係以電腦模擬圖2之複合結構200的反射率與入 射光線L的波長的關係圖’其中第一基板21〇為玻璃基 板’且透光層220的折射率為1.36。圖5係繪示為電腦模 擬單一玻璃基板（未覆蓋透光層220)的反射率與入射光 線的波長的關係圖。由圖4與圖5可知，相較於單一玻璃 基板而言，複合結構200在一較大的入射光線的波長範圍 (450.奈米至600奈米）内可保持低反射率。換言之，透 光層220的配置可有效降低複合結構2〇〇的反射率。 圖6繪示本發明一實施例之觸控面板的剖面圖。請參 照圖6’本實施例之觸控面板400包括一第一基板21〇、一 透光層220、一第二基板410、一第一導電圖案420、一第 二導電圖案430以及多個間隔物440。 在本實施例中’第一基板210以及透光層220的結 構、材質以及相對位置係相同於圖2的第一基板210以及 透光層220的結構、材質以及相對位置，故於此不再贅述。 201109767 WP9803-C206-0941 31532twf.doc/n 第二基板410平行配置於第一基板210的一側，並相 隔一間距。第二基板410例如為一可撓性透光基板，第二 基板410的材質例如為聚乙烯對苯二甲酸酯（p〇lyethylene terephthalate，PET)。第一導電圖案 420配置於透光層2·2〇 ·,, 上，並面向第二基板410。第二導電圖案430配置於第二 基板410上，並面向第一基板21〇。此外，第一導電圖案 420的材質與第二導電圖案430的材質包括金屬氧化物， 其例如為銦錫氧化物(ΙΤΟ)、銦鋅氧化物(ΙΖΟ)、鋁辞氧化 物(ΑΖΟ)、氧化辞(ΖηΟ)或氧化錫(Sn〇)等。 間隔物440可配置於第一導電圖案420與第二導電圖 案430之間。在本實施例中’間隔物44〇可為一框膠（未 繪示）、一絕緣層（未繪示）或多個間隔點（d〇t spacer)。 本實施例之觸控面板400可為一電容式觸控面板或一電阻 式觸控面板。 值得注意的是’當特定行進方向的入射光線L照射觸 控面板400而發生介面反射時’可能在第一基板21〇的表 面214上產生第一反射光線L1，並且在第二基板41〇的表 面412上產生第二反射光線L2。當第一反射光線L1與第 一反射光線L2彼此干涉而呈現特定的規律時，即可能產 生顯著的牛頓環現象。不過，透光層220的第一折射率小 於第一基板210的第二折射率，入射光線L在表面214發 生介面反射的機率較低。因此，本實施例的透光層220可 減少第一反射光線L1的強度，進而可有助於減弱牛頓環 現象。 201109767 WP9803-C206-0941 31532twf.d〇c/n 此外，當入射光線L入射至凹凸圖案212時，因為入 射角度並不一致而可產生多個不同方向的第一反射光線 L1 ’且這些第一反射光線L1相對於第二反射光線L2的光 程差彼life不同。因此·，第一反射光線.u與第二反射光線... L2彼此干涉後較不容易呈現特定的規律，進而可減輕牛頓 環現象。換言之，凹凸圖案212可減少第一反射光線L1 以同樣的行進方向前進，且可打亂第一反射光線L1相對 於第二反射光線L2的光程差。所以，第一反射光線L1與 第二反射光線L2之間的干涉現象會被破壞而不會具有良 好的規則性。 圖7繪示本發明一實施例之觸控面板的剖面圖。請參 照圖7，本實施例之觸控面板5〇〇相似於圖6之觸控面板 400，兩者的差異之處在於觸控面板5〇〇的包括一第一基板 210、一透光層220、一第二基板510、一第一導電圖案520、 一第二導電圖案530以及多個間隔物540。 在本實施例中，第一基板210以及透光層220的結 構、材質以及相對位置係相同於圖2的第一基板210以及 透光層220的結構、材質以及相對位置，故於此不再贅述。 第二基板510平行配置於第一基板210的一側，並相 隔一間距。第一基板210與第二基板510的材質例如為玻 璃或聚碳酸酯等透光材料。在本實施例中，第一基板21〇 具有相對的二表面214、216，其中透光層220配置於表面 214上，第一導電圖案520配置於表面216上且面向第二 基板510。第二導電圖案530配置於第二基板51〇上並面 201109767 WP9803-C206-0941 31532twf.doc/n 向第一基板210。 間隔物540配置在第一導電圖案520與第二導電圖案 530之間。在本實施例中，間隔物540可為一框膠（未繪 —•示》·、· >絕緣層(未繪.示）'或-多'個間隔點，（(1(^5|>&〇61?)-。 本實施例之觸控面板500可為一電容式觸控面板或一電阻 式觸控面板。由於觸控面板500的設計與觸控面板400的 設計大致相同，其可以有效減輕牛頓環現象。 綜上所述，由於本發明的透光層的第一折射率小於基 板的第二折射率，因此，透光層可減少入射光線在基板的 表面發生介面反射的機率。換言之，透光層可減少入射光 線在基板的表面上所產生的反射光線的強度，進而可有助 於減輕牛頓環現象。此外，在本發明的觸控面板中，入射 光線可在基板的凹凸圖案上產生多個不同方向的第一反射 光線’並在第二基板的表面上產生第二反射光線。這些第 一反射光線相對於第二反射光線的光程差彼此不同 ，進而 可有助於減輕牛頓環現象。 雖然本發明已以實施例揭露如上，然其並非用以限定 =月任何所屬技術領域中具有通常知識者，在不脫離 二，，精：和範圍内’當可作些許之更動與潤飾，故本 X呆魏圍當視後附之中請專利範圍所界定者為準。 【圖式簡單說明】 習知的電阻式觸控面板的剖面圖。 回2繪不本發明一實施例之複合結構的剖面圖。 11 201109767 WP9803-C206-0941 31532twf.doc/n 圖3A〜圖3D繪示圖2之複合結構的凹凸圖案的凸起 (或凹槽）的多種外型。 圖4繪示本發明一實施例之複合結構的反射率與入射 光據的波長的電腦模擬關係圖。… --·…… 圖5繪示本發明另一實施例之玻璃基板的反射率與入 射光線的波長的電腦模擬關係圖。 圖6繪示本發明一實施例之觸控面板的剖面圖。 圖7繪示本發明一實施例之觸控面板的剖面圖。 【主要元件符號說明】 1〇〇 :電阻式觸控面板 112、122、214、216、41 120 :第二透明基板 140 :第二圖案化導電層 210 :第一基板 212a :凸起 220 :透光層 400、500 :觸控面板 430、530 :第二導電圖案 G :間隙 L:入射光線 L2 .弟二反射光線 W :寬度 110 :第一透明基板 i、512、S :表面 130 :第一圖案化導電層 200 :複合結構 212 :凹凸圖案 212b ··凹槽 42〇、52〇 :第一導電圖案 410、510 :第二基板 440、540 :間隔物 Η :高度 L1，第一反射光線 Lr :反射光線 12Na can conform to the formula xTVicz. Further, when the thickness of the light transmissive layer 220 is T ' and the wavelength of an incident ray is ^, T and λ conform to the formula Τ = ^^^χ(2"+1) 'where 4 is 0 or a positive integer. Here, τ is, for example, an odd multiple of a quarter wavelength optical film thickness. Figure 4 is a graph showing the relationship between the reflectance of a composite structure and the wavelength of incident light according to an embodiment of the present invention. Fig. 5 is a graph showing the relationship between the reflectance of a glass substrate and the wavelength of incident light according to an embodiment of the present invention. Fig. 4 is a computer simulation of the relationship between the reflectance of the composite structure 200 of Fig. 2 and the wavelength of incident light L. Figure [wherein the first substrate 21 is a glass substrate" and the refractive index of the light transmissive layer 220 is 1.36. Figure 5 is a computer simulation of the reflectivity of a single glass substrate (not covering the light transmissive layer 220) and the wavelength of incident light. Figure 4 and Figure 5 show that the composite structure 200 maintains low reflectance over a wide range of incident light wavelengths (450. nm to 600 nm) compared to a single glass substrate. In other words, the configuration of the light transmissive layer 220 can effectively reduce the complex FIG. 6 is a cross-sectional view of a touch panel according to an embodiment of the invention. Referring to FIG. 6 , the touch panel 400 of the present embodiment includes a first substrate 21 and a light transmissive layer. 220, a second substrate 410, a first conductive pattern 420, a second conductive pattern 430, and a plurality of spacers 440. In the present embodiment, the structure, material, and relative position of the first substrate 210 and the light transmissive layer 220 The structure, material, and relative position of the first substrate 210 and the light transmissive layer 220 are the same as those of the first substrate 210 and the light transmissive layer 220 of FIG. 2, and thus will not be described herein. 201109767 WP9803-C206-0941 31532twf.doc/n The second substrate 410 is disposed in parallel in the first One side of the substrate 210 is spaced apart from each other. The second substrate 410 is, for example, a flexible light-transmitting substrate, and the material of the second substrate 410 is, for example, polyethylene terephthalate (PET). The first conductive pattern 420 is disposed on the light transmissive layer 2·2, and faces the second substrate 410. The second conductive pattern 430 is disposed on the second substrate 410 and faces the first substrate 21〇. a material of a conductive pattern 420 and a second conductive pattern 430 The material includes a metal oxide such as indium tin oxide (yttrium), indium zinc oxide (yttrium), aluminum oxide (yttrium), oxidized (ΖηΟ) or tin oxide (Sn〇). The 440 can be disposed between the first conductive pattern 420 and the second conductive pattern 430. In the embodiment, the spacer 44 can be a mask (not shown), an insulating layer (not shown), or multiple Interval (d〇t spacer). The touch panel 400 of this embodiment can be a capacitive touch panel or a resistive touch panel. It is worth noting that 'when the incident light L of a specific traveling direction illuminates the touch panel 400 to cause interface reflection, 'the first reflected light L1 may be generated on the surface 214 of the first substrate 21〇, and is 〇 on the second substrate 41 A second reflected ray L2 is generated on the surface 412. When the first reflected light L1 and the first reflected light L2 interfere with each other to exhibit a specific law, a significant Newton's ring phenomenon may be generated. However, the first index of refraction of the light transmissive layer 220 is less than the second index of refraction of the first substrate 210, and the incidence of incident light ray L at the surface 214 is lower. Therefore, the light transmissive layer 220 of the present embodiment can reduce the intensity of the first reflected light L1, which in turn can contribute to the weakening of the Newton's ring phenomenon. 201109767 WP9803-C206-0941 31532twf.d〇c/n Further, when the incident light L is incident on the concave-convex pattern 212, a plurality of first reflected rays L1' in different directions may be generated because the incident angles are not uniform, and these first reflections The optical path difference of the light ray L1 with respect to the second reflected light ray L2 is different. Therefore, the first reflected ray .u and the second reflected ray... L2 are less likely to exhibit a specific law after interfering with each other, thereby reducing the Newton's ring phenomenon. In other words, the concave-convex pattern 212 can reduce the first reflected light L1 to advance in the same traveling direction, and can disturb the optical path difference of the first reflected light L1 with respect to the second reflected light L2. Therefore, the interference phenomenon between the first reflected light L1 and the second reflected light L2 is broken without good regularity. FIG. 7 is a cross-sectional view of a touch panel according to an embodiment of the invention. Referring to FIG. 7 , the touch panel 5 of the present embodiment is similar to the touch panel 400 of FIG. 6 , and the difference between the two is that the touch panel 5 includes a first substrate 210 and a light transmissive layer. 220, a second substrate 510, a first conductive pattern 520, a second conductive pattern 530, and a plurality of spacers 540. In this embodiment, the structures, materials, and relative positions of the first substrate 210 and the light transmissive layer 220 are the same as those of the first substrate 210 and the light transmissive layer 220 of FIG. 2, and thus are no longer used herein. Narration. The second substrate 510 is disposed in parallel on one side of the first substrate 210 and spaced apart by a pitch. The material of the first substrate 210 and the second substrate 510 is, for example, a light-transmitting material such as glass or polycarbonate. In this embodiment, the first substrate 21A has opposite surfaces 214, 216, wherein the transparent layer 220 is disposed on the surface 214, and the first conductive pattern 520 is disposed on the surface 216 and faces the second substrate 510. The second conductive pattern 530 is disposed on the second substrate 51 and faces the first substrate 210 by the surface of the surface of the substrate 01009767 WP9803-C206-0941 31532 twf.doc/n. The spacer 540 is disposed between the first conductive pattern 520 and the second conductive pattern 530. In this embodiment, the spacer 540 may be a frame glue (not drawn -• Show), · > insulating layer (not shown) or - multiple 'interval points, ((1(^5| The touch panel 500 of the present embodiment can be a capacitive touch panel or a resistive touch panel. The design of the touch panel 500 is substantially the same as that of the touch panel 400. It can effectively alleviate the phenomenon of Newton's ring. In summary, since the first refractive index of the light transmissive layer of the present invention is smaller than the second refractive index of the substrate, the light transmissive layer can reduce the interfacial reflection of incident light on the surface of the substrate. In other words, the light transmissive layer can reduce the intensity of the reflected light generated by the incident light on the surface of the substrate, thereby contributing to the reduction of the Newton's ring phenomenon. Further, in the touch panel of the present invention, the incident light can be A plurality of first reflected rays ′ in different directions are generated on the concave-convex pattern of the substrate and second reflected rays are generated on the surface of the second substrate. The optical paths of the first reflected rays are different from each other with respect to the second reflected rays, and thus Helps alleviate Newton's ring phenomenon Although the present invention has been disclosed in the above embodiments by way of example, it is not intended to be limited to any of the ordinary skill in the art to which the invention pertains, and the invention may be modified and retouched without departing from the scope of the invention. This X is defined in the scope of the patent, which is defined in the patent scope. [Simplified illustration] A cross-sectional view of a conventional resistive touch panel. Back to 2 is a composite structure of an embodiment of the present invention. 11 201109767 WP9803-C206-0941 31532twf.doc/n FIGS. 3A to 3D illustrate various shapes of protrusions (or grooves) of the concavo-convex pattern of the composite structure of FIG. 2. FIG. 4 illustrates the present invention. A computer simulation diagram of the reflectivity of the composite structure of one embodiment and the wavelength of the incident light. FIG. 5 illustrates a computer of the reflectivity of the glass substrate and the wavelength of the incident light according to another embodiment of the present invention. Figure 6 is a cross-sectional view of a touch panel according to an embodiment of the invention. Figure 7 is a cross-sectional view of a touch panel according to an embodiment of the invention. Touch panel 112, 122, 214, 216 41 120: second transparent substrate 140: second patterned conductive layer 210: first substrate 212a: bump 220: light transmissive layer 400, 500: touch panel 430, 530: second conductive pattern G: gap L: incident Light L2. Younger reflected light W: Width 110: First transparent substrate i, 512, S: Surface 130: First patterned conductive layer 200: Composite structure 212: Concavo-convex pattern 212b · · Grooves 42〇, 52〇: First conductive patterns 410, 510: second substrate 440, 540: spacer Η: height L1, first reflected light Lr: reflected light 12