TWI490831B - Display device, anti-reflective transparent substrate and manufacturing method thereof - Google Patents
Display device, anti-reflective transparent substrate and manufacturing method thereof Download PDFInfo
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Description
本發明是有關於一種顯示裝置、抗反射基板及其製造方法，且特別是有關於一種採用蛾眼結構之顯示裝置、抗反射基板及其製造方法。The present invention relates to a display device, an antireflection substrate, and a method of fabricating the same, and more particularly to a display device using a moth eye structure, an antireflection substrate, and a method of fabricating the same.
隨著顯示科技的進步，發展出一種平面顯示器。平面顯示器具有輕、薄、尺寸多樣性等優點，使得平面顯示器已經全面性取代傳統陰極射線映像管顯示器。With the advancement of display technology, a flat panel display has been developed. Flat panel displays have the advantages of lightness, thinness, and versatility, making flat-panel displays a comprehensive replacement for conventional cathode ray image tube displays.
平面顯示器例如是液晶顯示器、有機發光二極體顯示器或電子紙顯示器等。這些平面顯示器各有其優點，分別廣泛應用於各式電子裝置中。然而，由於平面顯示器之外觀係為平面，所以人眼觀看平面顯示器時，經常會因為光線的反射，而產生不舒服的反光現象。因此，業界無不致力於研發抗反射基板，來改善不舒服的反光現象。The flat panel display is, for example, a liquid crystal display, an organic light emitting diode display, or an electronic paper display. These flat-panel displays each have their own advantages and are widely used in various electronic devices. However, since the appearance of the flat panel display is flat, when the human eye views the flat panel display, it often causes uncomfortable reflection due to the reflection of light. Therefore, the industry is committed to the development of anti-reflection substrates to improve uncomfortable reflection.
本發明係有關於一種顯示裝置、抗反射基板及其製造方法，其利用凹槽及蛾眼結構之設計，使得蛾眼結構得以受到凹槽的保護，而有效發揮抗反射效果，以改善不舒服的反光現象。The invention relates to a display device, an anti-reflection substrate and a manufacturing method thereof, which utilizes the design of a groove and a moth-eye structure, so that the moth-eye structure can be protected by the groove, and the anti-reflection effect is effectively exerted to improve the discomfort. Reflective phenomenon.
根據本發明之一方面，提出一種顯示裝置。顯示裝置包括一顯示面板及一抗反射基板。抗反射基板設置於顯示面板上。抗反射基板包括一基底及數個蛾眼結構。抗反射基板具有數個凹槽。此些蛾眼結構設置於此些凹槽內。此些蛾眼結構之高度小於此些凹槽之深度。According to an aspect of the invention, a display device is proposed. The display device includes a display panel and an anti-reflection substrate. The anti-reflection substrate is disposed on the display panel. The antireflection substrate comprises a substrate and a plurality of moth eye structures. The antireflection substrate has a plurality of grooves. These moth eye structures are disposed in these grooves. The height of the moth eye structures is less than the depth of the grooves.
根據本發明之另一方面，提出一種抗反射基板。抗反射基板包括一基底及數個蛾眼結構。基底具有數個凹槽。此些蛾眼結構設置於此些凹槽內。此些蛾眼結構之高度小於此些凹槽之深度。According to another aspect of the present invention, an antireflection substrate is proposed. The antireflection substrate comprises a substrate and a plurality of moth eye structures. The substrate has a plurality of grooves. These moth eye structures are disposed in these grooves. The height of the moth eye structures is less than the depth of the grooves.
根據本發明之再一方面，提出一種抗反射基板之製造方法。抗反射基板之製造方法包括以下步驟。提供一基底。形成數個凹槽於基底上。形成數個蛾眼結構於此些凹槽內。此些蛾眼結構之高度小於此些凹槽之深度。According to still another aspect of the present invention, a method of manufacturing an antireflection substrate is proposed. The method of manufacturing the antireflection substrate includes the following steps. A substrate is provided. A plurality of grooves are formed on the substrate. Several moth eye structures are formed in these grooves. The height of the moth eye structures is less than the depth of the grooves.
為讓本發明之上述內容能更明顯易懂，下文特舉較佳實施例，並配合所附圖式，作詳細說明如下：In order to make the above-mentioned contents of the present invention more comprehensible, the preferred embodiments are described below, and the detailed description is as follows:
以下係提出實施例進行詳細說明，其利用凹槽及蛾眼結構之設計，使得蛾眼結構得以受到凹槽的保護，而有效發揮抗反射效果，以改善不舒服的反光現象。然而，實施例僅用以作為範例說明，並不會限縮本發明欲保護之範圍。此外，實施例中之圖式係省略部份之元件，以清楚顯示本發明之技術特點。The following is a detailed description of the embodiment, which utilizes the design of the groove and the moth-eye structure, so that the moth-eye structure can be protected by the groove, and the anti-reflection effect is effectively exerted to improve the uncomfortable reflection phenomenon. However, the examples are for illustrative purposes only and are not intended to limit the scope of the invention. In addition, the drawings in the embodiments are omitted to partially illustrate the technical features of the present invention.
請參照第1圖，其繪示第一實施例之顯示裝置100之示意圖。顯示裝置100包括一顯示面板110及一抗反射基板120。顯示面板110例如是液晶顯示面板、有機發光二極體顯示面板或電子紙顯示面板。顯示面板110用以顯示畫面，以供觀賞。本實施例之抗反射基板120，可以是抗反射透明基板，例如是顯示裝置100之透明保護玻璃或觸控面板，其設置於顯示面板110上。在其他實施例中，抗反射基板120亦可以是軟性高分子聚合材料基板。抗反射基板120可以降低光線L的反射率，以避免人眼觀看畫面時，看到反光的現象而覺得不舒服。Please refer to FIG. 1 , which is a schematic diagram of the display device 100 of the first embodiment. The display device 100 includes a display panel 110 and an anti-reflection substrate 120. The display panel 110 is, for example, a liquid crystal display panel, an organic light emitting diode display panel, or an electronic paper display panel. The display panel 110 is used to display a picture for viewing. The anti-reflection substrate 120 of the present embodiment may be an anti-reflection transparent substrate, such as a transparent protective glass or a touch panel of the display device 100, which is disposed on the display panel 110. In other embodiments, the anti-reflection substrate 120 may also be a flexible polymer material substrate. The anti-reflection substrate 120 can reduce the reflectance of the light L, so that it is uncomfortable to see the phenomenon of reflection when the human eye views the picture.
請參照第2圖，其繪示第1圖之抗反射基板120之放大示意圖。抗反射基板120包括一基底121及數個蛾眼結構122。基底121具有數個凹槽123。此些凹槽123規則地排列並佈滿於基底121上。此些蛾眼結構122則設置於此些凹槽123內。Please refer to FIG. 2 , which is an enlarged schematic view of the anti-reflection substrate 120 of FIG. 1 . The anti-reflection substrate 120 includes a substrate 121 and a plurality of moth-eye structures 122. The substrate 121 has a plurality of grooves 123. These grooves 123 are regularly arranged and covered on the substrate 121. The moth eye structures 122 are disposed in the grooves 123.
請參照第3圖，其繪示入射蛾眼結構122之光線折射示意圖。基底121的折射率ns例如是1.5，蛾眼結構122之折射率(未標示)接近於基底121的折射率ns，而空氣之折射率ni例如是1.0003。由於蛾眼結構122之剖面形成錐狀或半球體型態，越靠近基底121之處，光線L接觸到蛾眼結構122的比例越高。反之，越遠離基底121之處，光線L接觸到蛾眼結構122之比例越低。因此，光線L之總折射率將由ni逐漸改變為ns，而呈現梯度式變化。藉此，反光現象得以大幅降低。較佳地，蛾眼結構122之週期Λ(週期Λ係為結構反覆再現的最小距離，例如是第3圖所示之兩個頂點之間的距離)、光線L之波長λ與基底121之折射率ns之關係滿足下式(1)時，蛾眼結構122對於此光線L具有抗反射效果。Please refer to FIG. 3, which illustrates a light refraction diagram of the incident moth-eye structure 122. The refractive index ns of the substrate 121 is, for example, 1.5, and the refractive index (not shown) of the moth-eye structure 122 is close to the refractive index ns of the substrate 121, and the refractive index ni of the air is, for example, 1.0003. Since the cross section of the moth eye structure 122 is formed into a tapered or hemispherical shape, the closer to the substrate 121, the higher the proportion of the light L contacting the moth eye structure 122. Conversely, the farther away from the substrate 121, the lower the proportion of light L that contacts the moth-eye structure 122. Therefore, the total refractive index of the light L will gradually change from ni to ns, showing a gradient change. Thereby, the phenomenon of reflection is greatly reduced. Preferably, the period Λ of the moth-eye structure 122 (the periodic Λ is the minimum distance over which the structure reappears, such as the distance between the two vertices shown in FIG. 3), the wavelength λ of the ray L, and the refraction of the substrate 121. When the relationship of the rate ns satisfies the following formula (1), the moth eye structure 122 has an anti-reflection effect on the light ray L.
Λ＜λ/ns…………………………………………(1)Λ<λ/ns..........................................(1)
以可見光為例，蛾眼結構122之週期Λ小於250奈米(nm)，且而蛾眼結構122之高度122h與寬度122w之比例大於1.5時，可以對可見光產生抗反射效果。Taking visible light as an example, the period Λ of the moth-eye structure 122 is less than 250 nanometers (nm), and when the ratio of the height 122h of the moth-eye structure 122 to the width 122w is greater than 1.5, an anti-reflection effect can be obtained for visible light.
請再參照第2圖，在本實施例中，蛾眼結構122之高度122h小於此些凹槽123之深度123z。如此一來，當抗反射基板120受到磨擦時，可以避免蛾眼結構122直接受到破壞，以維持如第3圖所示之梯度式折射率的效果。Referring to FIG. 2 again, in the embodiment, the height 122h of the moth eye structure 122 is smaller than the depth 123z of the grooves 123. As a result, when the anti-reflection substrate 120 is rubbed, the moth-eye structure 122 can be prevented from being directly damaged to maintain the effect of the gradient refractive index as shown in FIG.
請參照第4圖，其繪示第2圖之凹槽123之示意圖。就凹槽123之設計而言，凹槽123可以是矩形結構或平行四邊形結構。在本實施例中，凹槽123係為矩形結構，且各個凹槽123之邊緣對應於顯示面板110之各個畫素(未繪示)之邊緣。如此一來，凹槽123之側壁123s可以恰好設置於每一畫素的非顯示區域，例如畫素中的資料線或閘極線區域，以避免影響畫面的品質。另外，凹槽123的設計可考慮人眼對這些凹槽123的可視性、凹槽123之側壁123s的強度、有效防止蛾眼結構122受到破壞或者是可讓大部分的光線L射入蛾眼結構122等因素。Please refer to FIG. 4 , which shows a schematic view of the groove 123 of FIG. 2 . As far as the design of the groove 123 is concerned, the groove 123 may be a rectangular structure or a parallelogram structure. In the embodiment, the grooves 123 are rectangular structures, and the edges of the respective grooves 123 correspond to the edges of the respective pixels (not shown) of the display panel 110. In this way, the sidewall 123s of the recess 123 can be disposed just in the non-display area of each pixel, such as the data line or the gate line region in the pixel, to avoid affecting the quality of the picture. In addition, the design of the groove 123 can take into account the visibility of the groove 123 by the human eye, the strength of the side wall 123s of the groove 123, effectively prevent the moth-eye structure 122 from being damaged, or allow most of the light L to be injected into the moth eye. Structure 122 and other factors.
如第4圖所示，相鄰凹槽123之間距123a、123b可為10～30微米(um)。各個凹槽123之深度123z可為1～5微米(um)。各個凹槽123之長度123y可為各個凹槽123之寬度123x的1～3倍。舉例來說，凹槽123之寬度123x可以是20～100微米(um)，凹槽123之長度123y可以是20～300微米(um)。當然，熟知本發明技術領域之人士可在本案第4圖教示下，依需求或所使用材料調整凹槽的設計。As shown in Fig. 4, the distance between adjacent grooves 123 may be 10 to 30 micrometers (um). The depth 123z of each of the grooves 123 may be 1 to 5 micrometers (um). The length 123y of each of the grooves 123 may be 1 to 3 times the width 123x of each of the grooves 123. For example, the width 123x of the groove 123 may be 20 to 100 micrometers (um), and the length 123y of the groove 123 may be 20 to 300 micrometers (um). Of course, those skilled in the art of the present invention can adjust the design of the groove according to the needs or materials used in the teaching of Fig. 4 of the present invention.
本實施例提出之凹槽123及蛾眼結構122係為創新的設計，其製造方法亦為技術上的突破。以下係以數張示意圖來說明本實施例之抗反射基板120之製造方法。The groove 123 and the moth eye structure 122 proposed in this embodiment are innovative designs, and the manufacturing method thereof is also a technical breakthrough. Hereinafter, a method of manufacturing the anti-reflection substrate 120 of the present embodiment will be described in a plurality of schematic diagrams.
請參照第5～8圖，其繪示第一實施例之抗反射基板120之製造方法的示意圖。首先，如第5圖所示，提供基底121。Referring to FIGS. 5-8, a schematic view of a method of manufacturing the anti-reflection substrate 120 of the first embodiment is shown. First, as shown in Fig. 5, a substrate 121 is provided.
接著，如第6～7圖所示，形成數個凹槽123於基底121上。在此步驟中，此些凹槽123可以利用蝕刻、雷射雕刻、精密噴砂或超精密機械加工(CNC)等方式來形成。Next, as shown in FIGS. 6 to 7, a plurality of grooves 123 are formed on the substrate 121. In this step, the grooves 123 may be formed by etching, laser engraving, precision sand blasting or ultra-precision machining (CNC).
然後，如第8圖所示，形成數個蛾眼結構122於此些凹槽123內。在此步驟中，此些蛾眼結構122可以利用微影製程、電子束雕刻或奈米轉印之方式來形成此些蛾眼結構122。其中，蛾眼結構122的材料可包括金、銀、鈦、錫、碳、二氧化鈦(TiO2)、五氧化二鈮(Nb2O5)、五氧化二鉭(Ta2O5)、氧化鋯(ZrO2)、氮矽化合物(SiNx)、氟化鎂(MgF2)、氧化矽(SiO2)、導電高分子或其組成。透過上述製造方法即可完成本實施例之抗反射基板120。Then, as shown in Fig. 8, a plurality of moth eye structures 122 are formed in the grooves 123. In this step, the moth eye structures 122 may form the moth eye structures 122 by means of lithography, electron beam engraving or nanotransfer. The material of the moth-eye structure 122 may include gold, silver, titanium, tin, carbon, titanium dioxide (TiO2), niobium pentoxide (Nb2O5), tantalum pentoxide (Ta2O5), zirconium oxide (ZrO2), nitrogen bismuth compound. (SiNx), magnesium fluoride (MgF2), cerium oxide (SiO2), a conductive polymer or a composition thereof. The anti-reflection substrate 120 of this embodiment can be completed by the above manufacturing method.
請參照第9圖，其繪示第二實施例之凹槽223之示意圖。本實施例之凹槽223與第一實施例之凹槽123不同之處在於凹槽223之排列方式，其餘相同之處不再重複敘述。Please refer to FIG. 9 , which illustrates a schematic view of the recess 223 of the second embodiment. The groove 223 of this embodiment is different from the groove 123 of the first embodiment in the arrangement of the grooves 223, and the rest of the same points will not be repeatedly described.
如第9圖所示，本實施例相鄰兩列之凹槽223係相對平移一預定距離223p，例如是半個凹槽223之寬度223x。透過平移之方式，使得凹槽223之側壁223s形成折彎之態(例如是第9圖所繪示側壁223s沿著箭號A延伸，箭號A先沿著方向D1延伸，再沿著方向D2延伸，然後再沿著方向D1延伸，而形成折彎型態)，如此一來，可加強側壁223s之強度。As shown in FIG. 9, the grooves 223 of the adjacent two columns of the present embodiment are relatively translated by a predetermined distance 223p, for example, the width 223x of the half groove 223. By means of translation, the side wall 223s of the groove 223 is formed into a bent state (for example, the side wall 223s depicted in FIG. 9 extends along the arrow A, and the arrow A first extends along the direction D1, and then along the direction D2. Extending, and then extending along the direction D1 to form a bent shape), thereby strengthening the strength of the side wall 223s.
請參照第10圖，其繪示第三實施例之凹槽323之示意圖。本實施例之凹槽323與第一實施例之凹槽123不同之處在於凹槽323之形狀，其餘相同之處不再重複敘述。Referring to FIG. 10, a schematic view of the recess 323 of the third embodiment is shown. The groove 323 of this embodiment is different from the groove 123 of the first embodiment in the shape of the groove 323, and the rest of the same points will not be repeatedly described.
如第10圖所示，本實施例之凹槽323係為三角形結構。此些三角形凹槽323之邊長323i可為20～190微米(um)。As shown in Fig. 10, the groove 323 of this embodiment has a triangular structure. The side length 323i of the triangular grooves 323 may be 20 to 190 micrometers (um).
請參照第11圖，其繪示第四實施例之凹槽423之示意圖。本實施例之凹槽423與第一實施例之凹槽123不同之處在於凹槽423之形狀，其餘相同之處不再重複敘述。Please refer to FIG. 11 , which illustrates a schematic view of the recess 423 of the fourth embodiment. The groove 423 of this embodiment is different from the groove 123 of the first embodiment in the shape of the groove 423, and the rest of the same is not repeated.
如第11圖所示，本實施例之凹槽423係為圓形結構。各個凹槽423之直徑423R可為20～200微米(um)。As shown in Fig. 11, the groove 423 of this embodiment has a circular structure. The diameter 423R of each of the grooves 423 may be 20 to 200 micrometers (um).
根據上述實施例，透過上述實施例提出之凹槽123、223、323、423與蛾眼結構122之設計，使得蛾眼結構122得以受到凹槽123、223、323、423的保護，而有效發揮抗反射效果，以改善不舒服的反光現象。According to the above embodiment, the design of the grooves 123, 223, 323, and 423 and the moth eye structure 122 proposed by the above embodiments enables the moth eye structure 122 to be protected by the grooves 123, 223, 323, and 423, thereby effectively exerting Anti-reflective effect to improve uncomfortable reflection.
綜上所述，雖然本發明已以較佳實施例揭露如上，然其並非用以限定本發明。本發明所屬技術領域中具有通常知識者，在不脫離本發明之精神和範圍內，當可作各種之更動與潤飾。因此，本發明之保護範圍當視後附之申請專利範圍所界定者為準。In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.
100．．．顯示裝置100. . . Display device
110．．．顯示面板110. . . Display panel
120．．．抗反射基板120. . . Anti-reflection substrate
121．．．基底121. . . Base
122．．．蛾眼結構122. . . Moth eye structure
122h．．．蛾眼結構之高度122h. . . Height of moth eye structure
122w．．．蛾眼結構之寬度122w. . . Width of moth eye structure
123、223、323、423．．．凹槽123, 223, 323, 423. . . Groove
123a、123b．．．凹槽之間距123a, 123b. . . Distance between grooves
123s、223s．．．凹槽之側壁123s, 223s. . . Side wall of the groove
123x．．．凹槽之寬度123x. . . Width of the groove
123y．．．凹槽之長度123y. . . Length of the groove
123z．．．凹槽之深度123z. . . Depth of the groove
223p．．．預定距離223p. . . Predetermined distance
323i．．．凹槽之邊長323i. . . Side of the groove
423R．．．凹槽之直徑423R. . . Diameter of the groove
A．．．箭號A. . . Arrow
D1、D2．．．延伸方向D1, D2. . . Extension direction
L．．．光線L. . . Light
Λ．．．蛾眼結構之週期Hey. . . Moth eye structure cycle
ni、ns．．．折射率Ni, ns. . . Refractive index
第1圖繪示第一實施例之顯示裝置之示意圖。FIG. 1 is a schematic view showing a display device of the first embodiment.
第2圖繪示第1圖之抗反射基板之放大示意圖。FIG. 2 is an enlarged schematic view showing the anti-reflection substrate of FIG. 1.
第3圖繪示蛾眼結構之光線折射示意圖。Figure 3 is a schematic diagram showing the light refraction of the moth eye structure.
第4圖繪示凹槽之示意圖。Figure 4 is a schematic view of the groove.
第5～8圖繪示第一實施例之抗反射基板之製造方法的示意圖。5 to 8 are schematic views showing a method of manufacturing the antireflection substrate of the first embodiment.
第9圖繪示第二實施例之凹槽之示意圖。Figure 9 is a schematic view showing the groove of the second embodiment.
第10圖繪示第三實施例之凹槽之示意圖。Figure 10 is a schematic view showing the groove of the third embodiment.
第11圖繪示第四實施例之凹槽之示意圖。Figure 11 is a schematic view showing the groove of the fourth embodiment.
120．．．抗反射基板120. . . Anti-reflection substrate
121．．．基底121. . . Base
122．．．蛾眼結構122. . . Moth eye structure
122h．．．蛾眼結構之高度122h. . . Height of moth eye structure
123．．．凹槽123. . . Groove
123z．．．凹槽之深度123z. . . Depth of the groove
Claims (19)
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| TW100122880A TWI490831B (en) | 2011-06-29 | 2011-06-29 | Display device, anti-reflective transparent substrate and manufacturing method thereof |
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| TW100122880A TWI490831B (en) | 2011-06-29 | 2011-06-29 | Display device, anti-reflective transparent substrate and manufacturing method thereof |
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| TW201301221A TW201301221A (en) | 2013-01-01 |
| TWI490831B true TWI490831B (en) | 2015-07-01 |
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| CN104166173B (en) * | 2013-05-17 | 2016-08-24 | 群创光电股份有限公司 | Antireflection substrate and comprise its display device |
| TWI573091B (en) * | 2016-03-31 | 2017-03-01 | Information Processing System and Method with Personalized Sports Heart Rate Model |
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| EP0557110B1 (en) * | 1992-02-19 | 1997-10-01 | Sharp Kabushiki Kaisha | A reflective substrate, a method for producing the same, and a liquid crystal display device using the same |
| WO2004053581A2 (en) * | 2002-12-11 | 2004-06-24 | General Electric Company | Display substrate with reflective color filters |
| JP2004205849A (en) * | 2002-12-25 | 2004-07-22 | Seiko Epson Corp | Display body and display device |
| TW200506419A (en) * | 2003-06-09 | 2005-02-16 | Toyota Jidoshokki Kk | Optical device, area light apparatus and display |
| TW200929593A (en) * | 2007-12-20 | 2009-07-01 | Nat Univ Tsing Hua | Light source with reflective pattern structure |
| CN101479777A (en) * | 2006-05-31 | 2009-07-08 | 株式会社半导体能源研究所 | Display device and electronic apparatus |
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|---|---|---|---|---|
| EP0557110B1 (en) * | 1992-02-19 | 1997-10-01 | Sharp Kabushiki Kaisha | A reflective substrate, a method for producing the same, and a liquid crystal display device using the same |
| WO2004053581A2 (en) * | 2002-12-11 | 2004-06-24 | General Electric Company | Display substrate with reflective color filters |
| JP2004205849A (en) * | 2002-12-25 | 2004-07-22 | Seiko Epson Corp | Display body and display device |
| TW200506419A (en) * | 2003-06-09 | 2005-02-16 | Toyota Jidoshokki Kk | Optical device, area light apparatus and display |
| CN101479777A (en) * | 2006-05-31 | 2009-07-08 | 株式会社半导体能源研究所 | Display device and electronic apparatus |
| TW200929593A (en) * | 2007-12-20 | 2009-07-01 | Nat Univ Tsing Hua | Light source with reflective pattern structure |
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