TWI616690B - Optical film structure and apparatus of aplying the same - Google Patents

Optical film structure and apparatus of aplying the same Download PDF

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Publication number
TWI616690B
TWI616690B TW104134010A TW104134010A TWI616690B TW I616690 B TWI616690 B TW I616690B TW 104134010 A TW104134010 A TW 104134010A TW 104134010 A TW104134010 A TW 104134010A TW I616690 B TWI616690 B TW I616690B
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optical film
haze
polarizing plate
film structure
air gap
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TW104134010A
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TW201715260A (en
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蘇淑鳳
陳志添
陳彥年
曾明輝
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住華科技股份有限公司
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Priority to CN201610040504.5A priority patent/CN106597592B/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Polarising Elements (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一種光學膜片結構及其應用裝置，此光學膜片結構包括第一偏光板以及一光學膜片。第一偏光板具有第一外霧度；光學膜片具有第二外霧度，並且與第一偏光板貼合。其中，光學膜片與第一偏光板之間具有一個空氣間隙(air gap)；此空氣間隙的厚度具有實質介於100微米(μm)至300微米之間，且第一外霧度與第二外霧度加總之和實質介於12%至40%之間。 An optical film structure and an application device thereof. The optical film structure includes a first polarizing plate and an optical film. The first polarizing plate has a first outer haze; the optical film has a second outer haze, and is bonded to the first polarizing plate. There is an air gap between the optical film and the first polarizing plate; the thickness of the air gap is substantially between 100 micrometers (μm) and 300 micrometers, and the first outer haze and the second The sum of the external haze is between 12% and 40%.

Description

光學膜片結構及其應用裝置 Optical diaphragm structure and application device thereof

本發明的實施例是有關於一種光學膜片結構及其應用裝置。特別是有關於一種複合式的光學膜片結構及其應用裝置。 The embodiment of the invention relates to an optical film structure and an application device thereof. In particular, it relates to a composite optical film structure and its application device.

隨著科技的蓬勃發展，可攜式電子裝置，以行動通訊裝置為例，一般會搭配觸控式螢幕。而為了防止螢幕因摩擦硬物造成刮痕及細紋，或防止螢幕反射外藉光線產生眩光，目前商業上已提供多種具有複合功能，例如抗刮(HC)、抗眩(AG)，抗指紋(AF)等表面處理的光學貼膜，廣泛地應用於觸控面板上。 With the rapid development of technology, portable electronic devices, such as mobile communication devices, are usually equipped with touch screens. And in order to prevent the screen from scratching and fine lines caused by rubbing hard objects, or to prevent the screen from reflecting the external light to generate glare, currently there are many commercially available composite functions, such as anti-scratch (HC), anti-glare (AG), anti-fingerprint (AF) and other surface-treated optical films are widely used in touch panels.

為了製程良率高、重工容易等因素，應用於觸控顯示面板上的光學貼膜一般會採用框膠來與顯示模組的其他光學膜片，例如偏光板，貼合。因此，觸控模組與顯示模組之間會存在著空氣間隙(air gap)，由於二者距離相當接近，當使用者利用手指或是觸控筆按壓觸控面板時，會使空氣間隙不均勻而產生光 學干涉紋如同暈圈影像，即一般通稱「牛頓環(Newton's rings)」的現象，使得觀看者瀏覽畫面的可視程度降低，影響畫面顯示效果。尤其在目前觸控產品在力求薄型化的趨勢之下，觸控模組與顯示模組之間的空氣間隙(air gap)越來越小，牛頓環干擾畫面顯示效果的問題更加嚴重。 For factors such as high process yield and easy rework, optical films applied to touch display panels generally use a frame adhesive to adhere to other optical films of the display module, such as polarizing plates. Therefore, there is an air gap between the touch module and the display module. Since the distance between the two is quite close, when the user presses the touch panel with a finger or a stylus, the air gap does not change. Even light The interference pattern is like a halo image, that is, a phenomenon commonly known as "Newton's rings", which makes the viewer's visibility of the picture reduced, which affects the display effect of the picture. Especially under the current trend of thinning touch products, the air gap between the touch module and the display module is getting smaller and smaller, and the problem of Newton rings interfering with the screen display effect is more serious.

因此，有需要提供一種先進的光學膜片結構及其應用裝置，以解決習知技術所面臨的問題。 Therefore, there is a need to provide an advanced optical film structure and its application device to solve the problems faced by the conventional technology.

根據本發明的一實施例是提供一種光學膜片結構。此光學膜片結構包括第一偏光板以及一光學膜片。第一偏光板具有第一外霧度(Outer Haze)；光學膜片具有第二外霧度，並且與第一偏光板貼合。其中，光學膜片與第一偏光板之間具有一個空氣間隙(air gap)；此空氣間隙的厚度具有實質介於100微米至300微米之間，且第一外霧度與第二外霧度加總之和實質介於12%至40%之間。 According to an embodiment of the present invention, an optical film structure is provided. The optical film structure includes a first polarizing plate and an optical film. The first polarizing plate has a first outer haze (Outer Haze); the optical film has a second outer haze, and is bonded to the first polarizing plate. There is an air gap between the optical film and the first polarizing plate; the thickness of the air gap is substantially between 100 micrometers and 300 micrometers, and the first outer haze and the second outer haze In total, the sum is between 12% and 40%.

本發明的另一實施例是提供一種觸控顯示裝置。此觸控顯示裝置包括觸控模組、顯示模組以及如前所述的光學膜片結構。其中，顯示模組具有一個出光面；觸控模組面對此出光面；且光學膜片結構位於顯示模組和觸控模組之間。其中，光學膜片結構中的第一偏光板面對此出光面。 Another embodiment of the present invention is to provide a touch display device. The touch display device includes a touch module, a display module, and an optical film structure as described above. The display module has a light emitting surface; the touch module surface is the light emitting surface; and the optical film structure is located between the display module and the touch module. Wherein, the first polarizing plate surface in the optical film structure is the light emitting surface.

根據上述，本發明的實施例係提出一種光學膜片結 構以及應用此一光學膜片結構的觸控顯示裝置。此種光學膜片結構包括具有特定外霧度之相對關係的一個偏光板和一個光學膜片，藉由調控二者之間之空氣間隙的厚度，來達到消除觸控顯示裝置被按壓時所產生的光學干涉紋暈圈影像，以增近觀看者瀏覽畫面的可視程度，解決習知技術中牛頓環影響畫面顯示效果的現象。 According to the above, the embodiment of the present invention proposes an optical film junction Structure and a touch display device using the optical film structure. The optical film structure includes a polarizing plate and an optical film having a specific relationship of a specific external haze. The thickness of the air gap between the two is adjusted to eliminate the occurrence of the touch display device when it is pressed. The optical interference halo image is used to increase the visibility of the viewer's browsing screen, and to solve the phenomenon that the Newton ring affects the screen display effect in the conventional technology.

10‧‧‧觸控顯示裝置 10‧‧‧Touch display device

100‧‧‧光學膜片結構 100‧‧‧Optical diaphragm structure

101‧‧‧光學膜片 101‧‧‧Optical diaphragm

101a‧‧‧透光基材 101a‧‧‧Transparent substrate

101a1‧‧‧透光基材的表面 101a1‧‧‧ Surface of transparent substrate

101b‧‧‧表面處理層 101b‧‧‧Surface treatment layer

101b1‧‧‧透光塗層 101b1‧‧‧Transparent coating

101b2‧‧‧微粒子 101b2‧‧‧fine particles

102‧‧‧空氣間隙 102‧‧‧Air gap

103‧‧‧膠框 103‧‧‧plastic frame

104‧‧‧第一偏光板 104‧‧‧first polarizing plate

104a‧‧‧第一基材層 104a‧‧‧First substrate layer

104b‧‧‧第二基材層 104b‧‧‧Second substrate layer

104c‧‧‧偏光層 104c‧‧‧polarizing layer

105‧‧‧表面處理層 105‧‧‧Surface treatment layer

200‧‧‧顯示模組 200‧‧‧Display Module

201‧‧‧顯示介質 201‧‧‧Display media

201a‧‧‧出光面 201a‧‧‧light surface

201b‧‧‧入光面 201b‧‧‧Into the light surface

202‧‧‧第二偏光板 202‧‧‧Second polarizing plate

203‧‧‧黏著劑層 203‧‧‧Adhesive layer

210‧‧‧觸控模組 210‧‧‧Touch Module

H‧‧‧空氣間隙的厚度 H‧‧‧thickness of air gap

h‧‧‧表面處理層的厚度 h‧‧‧ thickness of surface treatment layer

S‧‧‧透光基材的厚度 S‧‧‧Thickness of transparent substrate

第1圖係根據本發明的一實施例所繪示的一種光學膜片結構的結構剖面示意圖；第2圖係根據第1圖之光學膜片所繪示的結構剖面局部放大圖；以及第3圖係根據本發明的一實施例繪示應用第1圖之光學膜片結構所製作的一種觸控顯示裝置的結構剖面示意圖。 FIG. 1 is a schematic structural cross-sectional view of an optical film structure according to an embodiment of the present invention; FIG. 2 is a partially enlarged view of the structural cross-section shown according to the optical film of FIG. 1; FIG. Is a schematic cross-sectional view showing a structure of a touch display device manufactured by applying the optical film structure of FIG. 1 according to an embodiment of the present invention.

本發明是提供一種光學膜片結構及其應用裝置，可解決習知觸控顯示裝置中牛頓環干擾畫面顯示效果的問題。為讓本發明之上述和其他目的、特徵和優點能更明顯易懂，下文特舉數種光學膜片結構及應用此一光學膜片結構的觸控顯示裝置作為較佳實施例詳細說明。 The invention provides an optical film structure and an application device thereof, which can solve the problem that Newton's ring interferes with screen display effects in a conventional touch display device. In order to make the above and other objects, features, and advantages of the present invention more comprehensible, several optical film structures and a touch display device using the optical film structure are specifically described in the following as preferred embodiments.

但必須注意的是，這些特定的實施案例與方法，並 非用以限定本發明。本發明仍可採用其他特徵、元件、方法及參數來加以實施。較佳實施例的提出，僅係用以例示本發明的技術特徵，並非用以限定本發明的申請專利範圍。該技術領域中具有通常知識者，將可根據以下說明書的描述，在不脫離本發明的精神範圍內，作均等的修飾與變化。在不同實施例與圖式之中，相同的元件，將以相同的元件符號加以表示。 It must be noted that these specific implementation cases and methods, and It is not intended to limit the invention. The invention can still be implemented with other features, elements, methods and parameters. The proposal of the preferred embodiment is only used to illustrate the technical features of the present invention, and is not intended to limit the scope of patent application of the present invention. Those with ordinary knowledge in the technical field can make equal modifications and changes according to the description of the following description without departing from the spirit of the present invention. In different embodiments and drawings, the same elements will be represented by the same element symbols.

請參照第1圖至第2圖，第1圖係根據本發明的一實施例所繪示的一種光學膜片結構100的結構剖面示意圖。光學膜片結構100包括一光學膜片101以及第一偏光板104。其中，光學膜片101和第一偏光板104彼此貼合。在本發明的一些實施例中，光學膜片101和第一偏光板104係採用口字膠貼合(又稱「框貼」，edge lamination，air bonding)的方式，藉由膠框103將彼此黏合，進而使光學膜片101與第一偏光板104之間具有一個厚度實質介於100至300μm之間的空氣間隙102。 Please refer to FIG. 1 to FIG. 2. FIG. 1 is a schematic cross-sectional view of a structure of an optical film structure 100 according to an embodiment of the present invention. The optical film structure 100 includes an optical film 101 and a first polarizing plate 104. The optical film 101 and the first polarizing plate 104 are bonded to each other. In some embodiments of the present invention, the optical film 101 and the first polarizing plate 104 are bonded by an adhesive tape (also known as “edge lamination”, air bonding), and the plastic frame 103 is used to bond each other. Adhesive, so that there is an air gap 102 between the optical film 101 and the first polarizing plate 104 with a thickness between 100 and 300 μm.

詳言之，光學膜片101係藉由一個包含有透光基材101a和一表面處理層101b的複合層結構來實現。在本發明的一些實施例之中，透光基材101a的厚度S實質介於20微米至120微米之間。其中，於透光基材101a可以是一種剛性基材(例如玻璃基板或半導體基板)，也可以是一種可撓性基材(例如塑化薄膜)。 Specifically, the optical film 101 is implemented by a composite layer structure including a light-transmitting substrate 101a and a surface treatment layer 101b. In some embodiments of the present invention, the thickness S of the transparent substrate 101a is substantially between 20 micrometers and 120 micrometers. The transparent substrate 101a may be a rigid substrate (such as a glass substrate or a semiconductor substrate), or a flexible substrate (such as a plasticized film).

例如，在本實施例之中，光學膜片101可作為貼附於觸控模組之玻璃基板上的防爆(anti-split；AS)膜來使用。因此， 構成光學膜片101之透光基材101a的材料可以是選自由聚甲基丙烯酸甲酯(Polymethylmethacrylate，PMMA)、三聚醋酸纖維素(Triacetyl Cellulose，TAC)、聚酯(Polyethylene Terephthalate，PET)、聚丙稀(Polypropylene，PP)、環烯烴聚合物(Cyclo Olefin Polymer，COP)、聚碳酸酯(Polycarbonate，PC)以及上述任意組合所組成的一族群。 For example, in this embodiment, the optical film 101 can be used as an anti-split (AS) film attached to a glass substrate of a touch module. therefore, The material constituting the light-transmitting substrate 101a of the optical film 101 may be selected from the group consisting of polymethylmethacrylate (PMMA), triacetyl cellulose (TAC), polyester (Polyethylene Terephthalate, PET), A group consisting of Polypropylene (PP), Cyclo Olefin Polymer (COP), Polycarbonate (PC), and any combination thereof.

表面處理層101b可以是一種以貼附或沉積的方式直接附加於透光基材101a面對第一偏光板104之表面101a1上的膜層；或者是藉由表面處理方法，例如研磨或蝕刻，移除一部分的透光基材101a，而在透光基材101a表面所形成具有特定厚度範圍的表面輪廓(surface profile)。在本發明的一些實施例中，表面處理層101b的厚度h實質介於100奈米(nm)至20微米之間，且具有實質介於0.05微米至0.5微米之間的粗糙度(Ra)(依JIS B 0601(1994)中所規定之算術平均粗糙度)。藉由在透光基材101a的表面設置表面處理層101b，可使光學膜片101具有一個實質介於0.1%至30%之間的第二外霧度。 The surface treatment layer 101b may be a film layer directly attached to the surface 101a1 of the light-transmitting substrate 101a facing the first polarizing plate 104 in an attachment or deposition manner; or by a surface treatment method such as grinding or etching, A part of the light-transmitting substrate 101a is removed, and a surface profile having a specific thickness range is formed on the surface of the light-transmitting substrate 101a. In some embodiments of the present invention, the thickness h of the surface treatment layer 101b is substantially between 100 nanometers (nm) and 20 microns, and has a roughness (Ra) substantially between 0.05 microns and 0.5 microns ( (According to the arithmetic mean roughness specified in JIS B 0601 (1994)). By providing the surface treatment layer 101b on the surface of the light-transmitting substrate 101a, the optical film 101 can have a second external haze that is substantially between 0.1% and 30%.

請參照第2圖，第2圖係根據第1圖之光學膜片101所繪示的結構剖面局部放大圖。在本發明的一些實施例之中，表面處理層101b可以包括一個塗佈於透光基材101a表面上的透光塗層101b1，以及複數個散佈於透光塗層101b1中可用來散射或反射光線的微粒子(particles)101b2。 Please refer to FIG. 2, which is a partially enlarged view of a structural cross section shown by the optical film 101 according to FIG. 1. In some embodiments of the present invention, the surface treatment layer 101b may include a light-transmitting coating layer 101b1 coated on the surface of the light-transmitting substrate 101a, and a plurality of light-transmitting coating layers 101b1 may be used for scattering or reflection. Particles 101b2 of light.

其中，透光塗層101b1可以是藉由，例如棒塗布法、 刀塗布法、輥塗布法、刀片塗布法、模塗布法、凹版印刷塗布法等，塗佈於透光基材101a表面上的塗料組成物層，例如樹脂層。 The light-transmitting coating 101b1 may be, for example, a rod coating method, A knife coating method, a roll coating method, a blade coating method, a die coating method, a gravure coating method, etc. are applied to a coating composition layer, such as a resin layer, on the surface of the light-transmitting substrate 101a.

微粒子101b2可以是包括，例如，氧化鋁(Al2O3)、二氧化矽(SiO2)、二氧化鈦(TiO2)、氧化鋅(ZnO)、氧化釔(Y2O3)、鋱釔鋁石榴石(Y3A15O12，YAG)、碳酸鈣(CaCO3)、硫酸鋇(BaSO4)、二氧化鋯(ZrO2)或上述材料的任意組合所構成的奈米粒子。在本發明的一些實施例中，微粒子101b2的形狀並無特別限定，其可以是正球狀、略球狀、針狀、多角形及橢圓體等任一種或多種的組合。微粒子101b2的較佳佳尺寸範圍，係平均粒徑實質介於0.1微米至10微米之間。 The microparticles 101b2 may be, for example, aluminum oxide (Al 2 O 3 ), silicon dioxide (SiO 2 ), titanium dioxide (TiO 2 ), zinc oxide (ZnO), yttrium oxide (Y 2 O 3 ), yttrium aluminum garnet Nano particles made of stone (Y 3 A 15 O 12 , YAG), calcium carbonate (CaCO 3 ), barium sulfate (BaSO 4 ), zirconium dioxide (ZrO 2 ), or any combination thereof. In some embodiments of the present invention, the shape of the microparticles 101b2 is not particularly limited, and may be any one or a combination of a spherical shape, a slightly spherical shape, a needle shape, a polygonal shape, and an ellipsoid. The preferred size range of the microparticles 101b2 is that the average particle diameter is substantially between 0.1 micrometer and 10 micrometers.

請參照第1圖，第一偏光板104可以是一種只容許具有單一偏振方向之光線通過的光學膜片。例如，在本發明的一些實施例中，第一偏光板104可以是一種複合塑化材料層。其可以包括第一基材層104a、第二基材層104b以及夾設於第一基材層104a和第二基材層104b之間的偏光層104c。 Referring to FIG. 1, the first polarizing plate 104 may be an optical film that allows only light having a single polarization direction to pass through. For example, in some embodiments of the present invention, the first polarizing plate 104 may be a composite plasticized material layer. It may include a first substrate layer 104a, a second substrate layer 104b, and a polarizing layer 104c sandwiched between the first substrate layer 104a and the second substrate layer 104b.

其中，偏光層104c係由具有光吸收率異向性(anisotropic)的聚乙烯醇(Poly-Vinyl Alcohol，PVA)所構成，可以吸收平行吸收軸方向的光束電場分量，而讓垂直吸收軸方向光束電場分量通過，達到偏光的效果。構成第一基材層104a和第二基材層104b的材料可以相同或不同；且構成第一基材層104a和第二基材層104b的材料，可以選自於由三醋酸纖維素(Triacetate Cellulose，TAC)、聚甲基丙烯酸甲酯(Polymethylmethacrylate， PMMA)、聚乙烯對苯二甲酸酯(Polyethylene Terephthalate，PET)、聚丙稀(Polypropylene，PP)、環烯烴聚合物(Cyclo Olefin Polymer，COP)、聚碳酸酯(Polycarbonate，PC)以及上述之任意組合所組成的一族群。 Among them, the polarizing layer 104c is composed of an isotropic polyvinyl alcohol (Poly-Vinyl Alcohol (PVA)). The electric field component passes through to achieve the effect of polarized light. The materials constituting the first substrate layer 104a and the second substrate layer 104b may be the same or different; and the materials constituting the first substrate layer 104a and the second substrate layer 104b may be selected from the group consisting of Triacetate Cellulose (TAC), Polymethylmethacrylate, PMMA), Polyethylene Terephthalate (PET), Polypropylene (PP), Cyclo Olefin Polymer (COP), Polycarbonate (PC), and any of the above A group of groups.

另外，在一實施例中，第一偏光板104面對光學膜片101的一側，還包括另一個表面處理層105。在本發明的一些實施例中，構成表面處理層105的材料與製作方法，可以和表面處理層101b的材料與製作方法相同。但在本發明的其他實施例中，表面處理層105的材料與製作方法並不以此為限。任何能使第一偏光板104(一般的外霧度約為0.1%)產生一個實質介於0.1%至30%之間的第一外霧度的光學膜層或表面輪廓，皆未超過本發明的精神範圍。 In addition, in one embodiment, a side of the first polarizing plate 104 facing the optical film 101 further includes another surface treatment layer 105. In some embodiments of the present invention, the material and manufacturing method of the surface treatment layer 105 may be the same as those of the surface treatment layer 101b. However, in other embodiments of the present invention, the material and manufacturing method of the surface treatment layer 105 are not limited thereto. Any optical film layer or surface profile that can cause the first polarizing plate 104 (generally external haze is about 0.1%) to produce a first external haze that is substantially between 0.1% and 30% does not exceed the present invention The spiritual scope.

然而值得注意的是，在本發明的實施例中，第一偏光板104的第一外霧度與光學膜片101的第二外霧度範圍是有所限制的。較佳第一外霧度與第二外霧度加總之和實質介於12%至40%之間；且第一外霧度和第二外霧度相減後的絕對差值最好實質小於24%。藉由在觸控顯示裝置10中貼附光學膜片結構100，可達到消除觸控顯示裝產生牛頓環影響畫面顯示效果的現象。 However, it is worth noting that, in the embodiment of the present invention, the first outer haze of the first polarizing plate 104 and the second outer haze range of the optical film 101 are limited. Preferably, the sum of the first external haze and the second external haze is substantially between 12% and 40%; and the absolute difference between the first external haze and the second external haze is preferably less than substantially twenty four%. By attaching the optical film structure 100 to the touch display device 10, it is possible to eliminate the phenomenon that the Newton ring influences the screen display effect generated by the touch display device.

請參照第3圖，第3圖係根據本發明的一實施例繪示應用第1圖之光學膜片結構100所製作的一種觸控顯示裝置10的結構剖面示意圖。觸控顯示裝置10包括顯示模組200、觸控模組210、以及如第1圖所繪示包含有光學膜片101、空氣間隙102、 膠框103、第一偏光板104以及表面處理層105的光學膜片結構100。 Please refer to FIG. 3. FIG. 3 is a schematic cross-sectional view showing a structure of a touch display device 10 manufactured by applying the optical film structure 100 of FIG. 1 according to an embodiment of the present invention. The touch display device 10 includes a display module 200, a touch module 210, and an optical film 101, an air gap 102, The optical film structure 100 of the plastic frame 103, the first polarizing plate 104 and the surface treatment layer 105.

其中，顯示模組200包含一個顯示介質201和一個第二偏光板202，且顯示介質201具有一個出光面201a以及位於出光面201a之相反一側的入光面201b。在本發明的一些實施例中，顯示介質201可以是液晶分子層(liquid crystal layer)、有機發光二極體層(organic light-emitting diode，OLED)、電子墨水(E-Ink)層或其他平面顯示介質。 The display module 200 includes a display medium 201 and a second polarizing plate 202, and the display medium 201 has a light emitting surface 201a and a light incident surface 201b on the opposite side of the light emitting surface 201a. In some embodiments of the present invention, the display medium 201 may be a liquid crystal molecular layer, an organic light-emitting diode (OLED), an electronic ink (E-Ink) layer, or other flat display. medium.

第二偏光板202面對顯示介質201的入光面201b。換言第二偏光板202和第一偏光板104分別位於顯示介質201的相反兩側。另外，第二偏光板202也是一種僅容許具有單一偏振方向之光線通過，可達到偏光效果的光學膜片。在本發明的一些實施例之中，第二偏光板202的材質可和第一偏光板104相同或不同。但值得注意的是，通過第二偏光板202之光線的偏振方向，必須與通過第一偏光板104之光線的偏振方向直交。 The second polarizing plate 202 faces the light incident surface 201 b of the display medium 201. In other words, the second polarizing plate 202 and the first polarizing plate 104 are located on opposite sides of the display medium 201, respectively. In addition, the second polarizing plate 202 is also an optical film that allows only light having a single polarization direction to pass through, and can achieve a polarization effect. In some embodiments of the present invention, the material of the second polarizing plate 202 may be the same as or different from that of the first polarizing plate 104. It is worth noting that the polarization direction of the light passing through the second polarizing plate 202 must be orthogonal to the polarization direction of the light passing through the first polarizing plate 104.

觸控模組210可以是電阻式觸控模組、電容式觸控模組、光學式觸控模組或表面聲波式觸控模組。其中，觸控模組210的基板(未繪示)面對顯示介質201的出光面201a。光學膜片結構100則位於顯示模組200和觸控模組210之間，且光學膜片結構100中的第一偏光板104面對此顯示介質201的出光面201a。且光學膜片結構100中的透光基材101a藉由黏著劑層203與觸控模組210貼合。 The touch module 210 may be a resistive touch module, a capacitive touch module, an optical touch module, or a surface acoustic wave touch module. The substrate (not shown) of the touch module 210 faces the light emitting surface 201 a of the display medium 201. The optical film structure 100 is located between the display module 200 and the touch module 210, and the first polarizing plate 104 side of the optical film structure 100 is the light emitting surface 201a of the display medium 201. The transparent substrate 101 a in the optical film structure 100 is bonded to the touch module 210 through an adhesive layer 203.

藉由調控光學膜片101與第一偏光板104之空氣間隙102的厚度H，配合特定範圍的第一外霧度與第二外霧度的組合，對於消除牛頓的現象有加乘效果。例如，在一些實施例中，當空氣間隙102厚度範圍實質介於100微米至200微米之間，且光學薄膜片101與第一偏光板104兩者外霧度加總在12%至24%時，仍有程度輕微的牛頓環出現。而在另一些實施例中，當光學薄膜片101與第一偏光板104二者的外霧度加總達24%以上，再搭配厚度實質在100微米以下的空氣間隙102，牛頓環現象可獲得有效抑制。在又一些實施例中，當空氣間隙102厚度範圍實質介於200微米至300微米之間，光學薄膜片101與第一偏光板104兩者外霧度加總在12%以上時，更可有效防止或抑制牛頓環產生。 By adjusting the thickness H of the air gap 102 between the optical film 101 and the first polarizing plate 104, the combination of the first outer haze and the second outer haze in a specific range has a multiplier effect on eliminating the phenomenon of Newton. For example, in some embodiments, when the thickness of the air gap 102 is substantially between 100 micrometers and 200 micrometers, and the total external haze of the optical film sheet 101 and the first polarizing plate 104 is 12% to 24% Still, a slight degree of Newton's rings appeared. In other embodiments, when the external haze of the optical film 101 and the first polarizing plate 104 totals more than 24%, and the air gap 102 with a thickness of substantially less than 100 microns is added, the Newton ring phenomenon can be obtained. Effectively suppressed. In still other embodiments, when the thickness of the air gap 102 is substantially between 200 micrometers and 300 micrometers, and the total external haze of the optical film sheet 101 and the first polarizing plate 104 is more than 12%, it is more effective. Prevent or suppress the generation of Newton's rings.

為了更清楚說明並驗證第一外霧度、第二外霧度與空氣間隙102之厚度H三者對於消除牛頓現象的效果，以下採用第一外霧度實質大於1%的第一偏光板104與第二外霧度實質大於24%的光學膜片101所組成的光學膜片結構100，與顯示模組200和觸控模組210所組裝的觸控顯示裝置10作為實施例，配合不同氣間隙102之厚度H調控來進行觀測，實施例的組合項目和觀測結果如表一： 其中，◎代表完全無牛頓環。 In order to more clearly illustrate and verify the effect of the first outer haze, the second outer haze, and the thickness H of the air gap 102 on the elimination of Newtonian phenomena, a first polarizing plate 104 having a first outer haze substantially greater than 1% is used below The optical film structure 100 composed of the second optical film 101 with the outer haze substantially greater than 24%, and the touch display device 10 assembled with the display module 200 and the touch module 210 as an embodiment, in combination with different gases. The thickness H of the gap 102 is adjusted for observation. The combined items and observation results of the embodiment are shown in Table 1: Among them, ◎ represents completely Newton-free ring.

同時與採用其他第一外霧度(實質小於1%或小於12%)和第二外霧度(實質小於1%或小於12%)之組合，與相同顯示模組200和觸控模組210所組裝的觸控顯示裝置作為比較例，配合不同氣間隙102之厚度H調控來進行觀測，比較例的組合項目和觀測結果如表二、表三和表四：。 At the same time, it uses the combination of other first external haze (essentially less than 1% or less than 12%) and second external haze (essentially less than 1% or less than 12%), and the same display module 200 and touch module 210 The assembled touch display device is used as a comparative example to observe the thickness H of different air gaps 102. The combined items and observation results of the comparative example are shown in Tables 2, 3, and 4 :.

其中，△代表牛頓環程度中等、×代表牛頓環程度嚴重。 Among them, △ represents a medium degree of Newton's ring and × represents a severe degree of Newton's ring.

○代表牛頓環程度輕微、△代表牛頓環程度中等、×代表牛頓環程度嚴重。 ○ represents a slight degree of Newton's ring, △ represents a medium degree of Newton's ring, and × represents a severe degree of Newton's ring.

◎代表完全無牛頓環、○代表牛頓環程度輕微、△代表牛頓環程度中等。 ◎ represents completely Newton-free ring, ○ represents slight degree of Newton's ring, △ represents medium degree of Newton's ring.

比較上述的觀測結果可知，採用本發明所提供之實施例，在第一外霧度和第二外霧度總合大於24%，空氣間隙厚度H在100微米至300微米之間的條件下，以手指或是觸控筆按壓觸控顯示裝置10的觸控面板(模組)時，完全無牛頓環的現象產生(請參見實施例1-實施例3)。 Comparing the above observation results, it can be known that under the conditions that the first and second external hazes are greater than 24% and the air gap thickness H is between 100 μm and 300 μm, When a touch panel (module) of the touch display device 10 is pressed with a finger or a stylus pen, no Newton ring phenomenon is generated (see Embodiments 1 to 3).

相反的，在第一外霧度和第二外霧度總合小於24%，空氣間隙厚度H在100微米至300微米之間的條件下，以 手指或是觸控筆按壓觸控顯示裝置的觸控面板(模組)時，仍會產生不同程度的牛頓環現象(請參見比較例1-比較例11)。且隨著第一外霧度和第二外霧度總合數值以及空氣間隙厚度H的減少，牛頓環現象有更加嚴重的趨勢。 On the contrary, under the condition that the total of the first external haze and the second external haze is less than 24%, and the air gap thickness H is between 100 μm and 300 μm, When a finger or a stylus is pressed on a touch panel (module) of a touch display device, a Newton ring phenomenon of different degrees still occurs (see Comparative Example 1 to Comparative Example 11). And as the total value of the first outer haze and the second outer haze and the air gap thickness H decrease, the Newton's ring phenomenon has a more serious tendency.

雖然，當將氣間隙厚度H調控至實質大於等於300微米時，僅管第一外霧度和第二外霧度總合小於24%時(請參見比較例12)，也可以完全消除牛頓環的現象。但如此一來，光學膜片結構101的厚度必須增加，並不利於觸控顯示裝置10的薄型化需求。由此可知，本案所提供之實施例具有消除牛頓環的現象以及同時能兼顧觸控顯示裝置10薄型化需求的技術優勢。 Although, when the air gap thickness H is controlled to be substantially 300 micrometers or more, the Newtonian ring can be completely eliminated even when the total of the first outer haze and the second outer haze is less than 24% (see Comparative Example 12). The phenomenon. However, in this case, the thickness of the optical film structure 101 must be increased, which is not conducive to the thinning requirement of the touch display device 10. Therefore, it can be known that the embodiments provided in this case have the technical advantages of eliminating the phenomenon of Newton's ring and simultaneously taking into account the thinning requirements of the touch display device 10.

根據上述，本發明的實施例係提出一種光學膜片結構以及應用此一光學膜片結構的觸控顯示裝置。此種光學膜片結構包括具有特定外霧度之相對關係的一個偏光板和一個光學膜片，藉由調控二者之間之空氣間隙的厚度，來達到消除觸控顯示裝置被按壓時所產生的光學干涉紋暈圈影像，以增近觀看者瀏覽畫面的可視程度，解決習知技術中牛頓環影響畫面顯示效果的現象。 According to the above, the embodiments of the present invention provide an optical film structure and a touch display device using the optical film structure. The optical film structure includes a polarizing plate and an optical film having a specific relationship of a specific external haze. The thickness of the air gap between the two is adjusted to eliminate the occurrence of the touch display device when it is pressed. The optical interference halo image is used to increase the visibility of the viewer's browsing screen, and to solve the phenomenon that the Newton ring affects the screen display effect in the conventional technology.

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。此處所述的製程步驟和結構並未涵蓋製作整體積體電路的完整製造過程。本發明可以和許多目前已知或未來被發展出來的不同積體電路製作技術合併實施。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。 Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. The process steps and structures described herein do not cover the complete manufacturing process for making integrated integrated circuits. The present invention can be implemented in combination with many different integrated circuit fabrication technologies that are currently known or developed in the future. Those with ordinary knowledge in the technical field to which the present invention pertains may make various modifications without departing from the spirit and scope of the present invention. Changes and retouching. Therefore, the protection scope of the present invention shall be determined by the scope of the attached patent application.

100‧‧‧光學膜片結構 100‧‧‧Optical diaphragm structure

101‧‧‧光學膜片 101‧‧‧Optical diaphragm

101a‧‧‧透光基材 101a‧‧‧Transparent substrate

101b‧‧‧表面處理層 101b‧‧‧Surface treatment layer

101b1‧‧‧透光塗層 101b1‧‧‧Transparent coating

101b2‧‧‧微粒子 101b2‧‧‧fine particles

102‧‧‧空氣間隙 102‧‧‧Air gap

103‧‧‧膠框 103‧‧‧plastic frame

104‧‧‧第一偏光板 104‧‧‧first polarizing plate

104a‧‧‧第一基材層 104a‧‧‧First substrate layer

104b‧‧‧第二基材層 104b‧‧‧Second substrate layer

104c‧‧‧偏光層 104c‧‧‧polarizing layer

105‧‧‧表面處理層 105‧‧‧Surface treatment layer

H‧‧‧空氣間隙的厚度 H‧‧‧thickness of air gap

h‧‧‧表面處理層的厚度 h‧‧‧ thickness of surface treatment layer

S‧‧‧透光基材的厚度 S‧‧‧Thickness of transparent substrate

Claims (11)

一種光學膜片結構，包括：一第一偏光板，具有一第一外霧度(outer haze)；以及一光學膜片，具有一第二外霧度，與該第一偏光板貼合，且該光學膜片與該第一偏光板之間具有一空氣間隙(air gap)；其中，該空氣間隙具有實質介於100微米(μm)至300微米之間的一厚度，且該第一外霧度與該第二外霧度加總之和實質介於12%至40%之間。 An optical film structure includes: a first polarizing plate having a first outer haze; and an optical film having a second outer haze, attached to the first polarizing plate, and There is an air gap between the optical film and the first polarizing plate; wherein the air gap has a thickness substantially between 100 micrometers (μm) and 300 micrometers, and the first external mist The sum of the degree and the second external haze is substantially between 12% and 40%. 如申請專利範圍第1項所述之光學膜片結構，其中該第一外霧度與該第二外霧度加總之和實質介於24%至40%之間。 According to the optical film structure described in item 1 of the scope of patent application, wherein the sum of the first external haze and the second external haze is substantially between 24% and 40%. 如申請專利範圍第1項所述之光學膜片結構，其中該空氣間隙具有實質介於100微米至200微米的一厚度，且該第一外霧度與該第二外霧度加總之和實質介於24%至30%之間。 The optical film structure according to item 1 of the scope of patent application, wherein the air gap has a thickness substantially between 100 micrometers and 200 micrometers, and the sum of the first outer haze and the second outer haze is substantially Between 24% and 30%. 一種光學膜片結構，包括：一第一偏光板，具有一第一外霧度；以及一光學膜片，具有一第二外霧度，與該第一偏光板貼 合，且該光學膜片與該第一偏光板之間具有一空氣間隙；其中，該空氣間隙具有實質介於100微米至200微米的一厚度，且該第一外霧度與該第二外霧度加總之和實質介於24%至30%之間或該空氣間隙具有實質介於200微米至300微米之間的一厚度，且該第一外霧度與該第二外霧度加總之和實質霧度加總在12%以上。 An optical film structure includes: a first polarizing plate having a first external haze; and an optical film having a second external haze attached to the first polarizing plate And there is an air gap between the optical film and the first polarizing plate; wherein the air gap has a thickness substantially between 100 microns and 200 microns, and the first outer haze and the second outer The sum of the haze sum is substantially between 24% and 30% or the air gap has a thickness substantially between 200 and 300 microns, and the first outer haze and the second outer haze are added together And the actual haze is more than 12%. 如申請專利範圍第1項或第4項所述之光學膜片結構，其中該光學膜片包括一防爆(anti-split；AS)膜，且構成該防爆膜的材料係選自由聚甲基丙烯酸甲酯(Polymethylmethacrylate，PMMA)、三聚醋酸纖維素(Triacetyl Cellulose，TAC)、聚酯(Polyethylene Terephthalate，PET)、聚丙稀(Polypropylene，PP)、環烯烴聚合物(Cyclo Olefin Polymer，COP)、聚碳酸酯(Polycarbonate，PC)以及上述任意組合所組成的一族群。 The optical film structure according to item 1 or 4 of the scope of the patent application, wherein the optical film comprises an anti-split (AS) film, and the material constituting the anti-split film is selected from polymethacrylic acid Polymethylmethacrylate (PMMA), Triacetyl Cellulose (TAC), Polyester (Polyethylene Terephthalate, PET), Polypropylene (PP), Cyclo Olefin Polymer (COP), Polymer A group of carbonates (Polycarbonate, PC) and any combination of the above. 如申請專利範圍第1項或第4項所述之光學膜片結構，其中該光學膜片具有實質介於20微米至120微米之間的一厚度。 The optical film structure according to item 1 or item 4 of the patent application scope, wherein the optical film has a thickness substantially between 20 micrometers and 120 micrometers. 如申請專利範圍第1項或第4項所述之光學膜片結構，其中該光學膜片包括一表面處理層，具有實質介於100奈米 (nm)至20微米之間的一厚度以及實質介於0.05微米至0.5微米之間的一粗糙度(Ra)。 The optical film structure according to item 1 or 4 of the scope of patent application, wherein the optical film includes a surface treatment layer having a thickness of substantially 100 nm a thickness between (nm) and 20 microns and a roughness (Ra) between substantially 0.05 and 0.5 microns. 如申請專利範圍第4項所述之光學膜片結構，其中該光學膜片包括一表面處理層，該表面處理層包括：一透光塗層，塗佈於該光學膜片面對該第一偏光板的一表面上；以及複數個微粒子(particles)，分佈於該透光塗層之中。 The optical film structure according to item 4 of the scope of patent application, wherein the optical film includes a surface treatment layer, and the surface treatment layer includes: a light-transmitting coating applied on the optical film to face the first A surface of the polarizing plate; and a plurality of particles are distributed in the light-transmitting coating. 如申請專利範圍第1項或第4項所述之光學膜片結構，更包括一框膠層，位於該光學膜片與該第一偏光板之間，其中該空氣間隙位於該框膠層之中。 According to the optical film structure described in the first or fourth item of the patent application scope, the optical film structure further includes a frame adhesive layer located between the optical film and the first polarizing plate, wherein the air gap is located in the frame adhesive layer. in. 如申請專利範圍第1項或第4項所述之光學膜片結構，其中該第一外霧度實質介於0.1%至30%之間；該第二外霧度實質介於0.1%至30%之間；其中該第一外霧度和該第二外霧度相減後的一絕對差值實質小於24%。 According to the optical film structure described in item 1 or 4 of the scope of patent application, wherein the first external haze is substantially between 0.1% and 30%; the second external haze is substantially between 0.1% and 30 %; Wherein an absolute difference between the first outer haze and the second outer haze is substantially less than 24%. 一種觸控顯示裝置，包括：一顯示模組，具有一出光面；一觸控模組，面對該出光面；以及如申請專利範圍第1項至第10項其中之一者所述的 該光學膜片結構，位於該顯示模組和該觸控模組之間；其中，該第一偏光板面對該出光面。 A touch display device includes: a display module having a light emitting surface; a touch module facing the light emitting surface; and the one described in one of the first to tenth of the scope of patent application The optical film structure is located between the display module and the touch module; wherein the first polarizing plate faces the light emitting surface.
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