TWI637302B - Integrated touch display - Google Patents
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- TWI637302B TWI637302B TW106128640A TW106128640A TWI637302B TW I637302 B TWI637302 B TW I637302B TW 106128640 A TW106128640 A TW 106128640A TW 106128640 A TW106128640 A TW 106128640A TW I637302 B TWI637302 B TW I637302B
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- 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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Abstract
一種整合型觸控顯示器,其包含複合基板、底偏光板與顯示面板,其中顯示面板,位於複合基板與底偏光板之間。複合基板包含低面內相位延遲(Re)的1/4波長波片、設置於低面內相位延遲的1/4波長波片的至少一表面上的觸控電極層、保護層與偏光層。偏光層設置於低面內相位延遲的1/4波長波片與保護層之間。 An integrated touch display includes a composite substrate, a bottom polarizing plate, and a display panel. The display panel is located between the composite substrate and the bottom polarizing plate. The composite substrate includes a quarter-wave plate with a low in-plane retardation (Re), a touch electrode layer, a protective layer, and a polarizing layer disposed on at least one surface of the quarter-wave plate with a low in-plane retardation. The polarizing layer is disposed between the quarter-wave plate with a low in-plane retardation and the protective layer.
Description
本發明是有關於整合型觸控顯示器,特別是一種包含觸控電極層設置於低面內相位延遲的1/4波長波片的至少一表面上的整合型觸控顯示器。 The invention relates to an integrated touch display, in particular to an integrated touch display including a touch electrode layer disposed on at least one surface of a quarter-wave plate with a low in-plane phase delay.
傳統偏光板的層疊結構是以聚乙烯醇(Polyvinyl Alcohol,PVA)為中間層,聚乙烯醇兩側為三醋酸纖維素(Triacetate Cellulose Film,TAC)薄膜層,其中起偏振作用的是PVA層,但是PVA層極易水解,為了保護偏光板的物理特性,因此,需要在PVA層的兩側各附著一層具有高透光率、耐水性好且具有一定機械強度的TAC層來保護PVA層。觸控面板會再疊加於偏光板之上。由於聚乙烯醇與三醋酸纖維素均具線偏振光特性,因此,光通過傳統偏光板的層疊結構後為線偏振光。若此線偏振光之偏振方向與觀察者配戴之太陽眼鏡(具線偏振光特性)的偏振方向垂直時,視覺效果會出現黑屏的問題。當觸控面板的基板為塑料時,視覺效果會出現彩虹紋的問題。 The laminated structure of the traditional polarizing plate uses polyvinyl alcohol (Polyvinyl Alcohol, PVA) as an intermediate layer, and two sides of the polyvinyl alcohol are Triacetate Cellulose Film (TAC) film layers, and the PVA layer plays a polarizing role. However, the PVA layer is extremely easy to hydrolyze. In order to protect the physical properties of the polarizing plate, a TAC layer with high light transmittance, good water resistance, and a certain mechanical strength needs to be attached to each side of the PVA layer to protect the PVA layer. The touch panel will be superimposed on the polarizer. Because both polyvinyl alcohol and cellulose triacetate have linearly polarized light characteristics, light passes through the laminated structure of a conventional polarizing plate and becomes linearly polarized light. If the polarization direction of this linearly polarized light is perpendicular to the polarization direction of the sunglasses (with linearly polarized light characteristics) worn by the observer, the problem of black screen will occur in the visual effect. When the substrate of the touch panel is plastic, the problem of rainbow effects may occur in the visual effect.
另外,傳統偏光板的層疊結構,其厚度約為75~135微米,再與觸控面板貼合後,其厚度約為100~250微 米,若再搭配模組蓋玻璃(Cover Glass,CG),其整體厚度可達725微米。 In addition, the thickness of the laminated structure of the conventional polarizing plate is about 75 to 135 micrometers. After bonding with the touch panel, the thickness is about 100 to 250 micrometers. M, if it is matched with module cover glass (CG), its overall thickness can reach 725 microns.
因此,急需一種可同時改善視覺上所產生黑屏與彩虹紋問題,且能降低整體厚度的整合型觸控顯示器。 Therefore, there is an urgent need for an integrated touch display that can simultaneously reduce the problem of black screens and rainbow patterns that are visually generated and can reduce the overall thickness.
本發明之一實施方式提供一種整合型觸控顯示器,其包含複合基板、底偏光板與顯示面板,其中顯示面板,位於複合基板與底偏光板之間。複合基板包含:低面內相位延遲的1/4波長波片、設置於低面內相位延遲的1/4波長波片的至少一表面上的觸控電極層、保護層與偏光層。偏光層,設置於低面內相位延遲的1/4波長波片與保護層之間。 An embodiment of the present invention provides an integrated touch display including a composite substrate, a bottom polarizing plate, and a display panel, wherein the display panel is located between the composite substrate and the bottom polarizing plate. The composite substrate includes a quarter wave plate with a low in-plane retardation, a touch electrode layer, a protective layer, and a polarizing layer disposed on at least one surface of the quarter wave plate with a low in-plane retardation. The polarizing layer is disposed between the quarter-wave plate with a low in-plane retardation and the protective layer.
在本發明的一實施例中,更包含:保護蓋板與光學膠。光學膠連接複合基板與保護蓋板。 In an embodiment of the present invention, it further includes: a protective cover and an optical glue. Optical glue connects the composite substrate and the protective cover.
在本發明的一實施例中,其中低面內相位延遲的1/4波長波片的面內相位延遲小於300奈米。 In an embodiment of the present invention, the in-plane phase delay of the quarter-wave plate with a low in-plane phase delay is less than 300 nm.
在本發明的一實施例中,其中觸控電極層為單層觸控電極層。 In one embodiment of the present invention, the touch electrode layer is a single touch electrode layer.
在本發明的一實施例中,其中單層觸控電極層設置在低面內相位延遲的1/4波長波片與偏光層之間。 In one embodiment of the present invention, the single-layer touch electrode layer is disposed between the quarter-wave plate with a low in-plane phase delay and the polarizing layer.
在本發明的一實施例中,其中單層觸控電極層設置在低面內相位延遲的1/4波長波片與光學膠之間。 In an embodiment of the present invention, the single-layered touch electrode layer is disposed between the 1/4 wavelength wave plate with a low in-plane phase delay and the optical glue.
在本發明的一實施例中,其中觸控電極層包含相對應之第一觸控電極層與第二觸控電極層。第一觸控電極層設 置於低面內相位延遲的1/4波長波片與光學膠之間,第二觸控電極層設置於低面內相位延遲的1/4波長波片與偏光層之間。 In one embodiment of the present invention, the touch electrode layer includes a corresponding first touch electrode layer and a second touch electrode layer. First touch electrode layer The second touch electrode layer is disposed between the 1/4 wavelength wave plate with a low in-plane phase delay and the optical adhesive, and the second touch electrode layer is disposed between the 1/4 wavelength wave plate with a low in-plane phase delay and the polarizing layer.
在本發明的一實施例中,其中複合基板的厚度小於170微米。 In an embodiment of the present invention, the thickness of the composite substrate is less than 170 micrometers.
100‧‧‧低面內相位延遲的1/4波長波片 100‧‧‧ quarter wave plate with low in-plane phase delay
102‧‧‧觸控電極層 102‧‧‧Touch electrode layer
104‧‧‧單層觸控電極層 104‧‧‧Single-layer touch electrode layer
106‧‧‧印刷電路軟板 106‧‧‧Printed Circuit Board
108‧‧‧偏光層 108‧‧‧ polarizing layer
110‧‧‧保護層 110‧‧‧ protective layer
112‧‧‧顯示面板 112‧‧‧Display Panel
114‧‧‧底偏光板 114‧‧‧ bottom polarizer
116‧‧‧光學膠 116‧‧‧Optical glue
118‧‧‧保護蓋板 118‧‧‧Protection cover
120‧‧‧第一觸控電極層 120‧‧‧first touch electrode layer
122‧‧‧第二觸控電極層 122‧‧‧Second touch electrode layer
300、500、700‧‧‧複合基板 300, 500, 700‧‧‧ composite substrate
200、400、600‧‧‧整合型觸控顯示器 200, 400, 600‧‧‧ integrated touch display
為使本發明之特徵、優點與實施例能更明顯易懂,所附圖示之說明如下:第1A圖到第1F圖分別繪示根據本發明一實施例之整合型觸控顯示器的剖面圖。 In order to make the features, advantages, and embodiments of the present invention more comprehensible, the accompanying drawings are described as follows: FIGS. 1A to 1F are cross-sectional views of an integrated touch display according to an embodiment of the present invention, respectively. .
第2圖到第3圖分別繪示依據本發明之實施例之整合型觸控顯示器的不同態樣。 FIG. 2 to FIG. 3 respectively show different aspects of the integrated touch display according to the embodiment of the present invention.
本發明之目的及優點,藉由下列實施方式中伴隨圖式與元件符號之詳細敘述後,將更為顯著。然而,應瞭解到所提供之實施方式並非用以限制本發明所涵蓋的範圍。這些實務上的細節不應用以限制本發明。也就是說,在本發明部分實施方式中,這些實務上的細節是非必要的。 The purpose and advantages of the present invention will be more remarkable after detailed description accompanying drawings and element symbols in the following embodiments. It should be understood, however, that the embodiments provided are not intended to limit the scope of the invention. These practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary.
本文所使用的有關「包含」、「包括」、「具有」、「含有」、「涉及」及其他相似涵意的詞彙皆為開放式,舉例來說,意指包含但不限於此。 The words "including", "including", "having", "containing", "concerned" and other similar meanings used in this article are all open-ended, for example, meaning including but not limited to this.
除非內容中有其他清楚的指稱,本文所使用的單 數詞包含複數的指稱對象。透過參考「一實施方式」這樣特定的指稱,在至少其中之一的本案發明的實施方式中,表示一種特定的特徵、結構或特色,因此在各處的「在一實施方式」,這樣的片語透過特別的指稱出現時,並不需要參考相同的實施方式,更進一步,在一或多實施方式中,這些特別的特徵、結構、或特色可以依合適的情況相互組合。 Unless otherwise clearly stated in the content, Numerals contain plural referents. By referring to a specific reference such as "an embodiment", in at least one of the embodiments of the invention of the present invention, it represents a specific feature, structure or characteristic. When a word appears through a special reference, it is not necessary to refer to the same embodiment. Furthermore, in one or more embodiments, these special features, structures, or characteristics can be combined with each other as appropriate.
以下將以圖式揭露本發明之複數個實施方式,為明確說明起見,許多實務上的細節將在以下敘述中一併說明。然而,應瞭解到,這些實務上的細節不應用以限制本發明。也就是說,在本發明部分實施方式中,這些實務上的細節是非必要的。此外,為簡化圖式起見,一些習知慣用的結構與元件在圖式中將以簡單示意的方式繪示之。 In the following, a plurality of embodiments of the present invention will be disclosed graphically. For the sake of clarity, many practical details will be described in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, in order to simplify the drawings, some conventional structures and components will be shown in the drawings in a simple and schematic manner.
此外,相對詞彙,如『下』或『底部』與『上』或『頂部』,用來描述文中在附圖中所示的一元件與另一元件之關係。相對詞彙是用來描述裝置在附圖中所描述之外的不同方位是可以被理解的。例如,如果一附圖中的裝置被翻轉,元件將會被描述原為位於其他元件之『下』側將被定向為位於其他元件之『上』側。例示性的詞彙『下』,根據附圖的特定方位可以包含『下』和『上』兩種方位。同樣地,如果一附圖中的裝置被翻轉,元件將會被描述原為位於其他元件之『下方』或『之下』將被定向為位於其他元件上之『上方』。例示性的詞彙『下方』或『之下』,可以包含『上方』和『上方』兩種方位。 In addition, relative terms, such as "down" or "bottom" and "up" or "top", are used to describe the relationship between one element and another element shown in the figures in the text. Relative vocabulary is used to describe different orientations of the device beyond those described in the drawings. It is understandable. For example, if the device in a figure is turned over, the element will be described as being on the "lower" side of the other element and will be oriented on the "upper" side of the other element. The exemplified word "down" may include two directions "down" and "up" according to the specific orientation of the drawing. Similarly, if the device in a figure is turned over, the element will be described as "below" or "below" the other element will be oriented "above" the other element. The exemplary words "below" or "below" can include both "above" and "above" orientations.
第1A圖到第1F圖分別繪示根據本發明一實施例 之整合型觸控顯示器的剖面圖。 1A to 1F respectively illustrate an embodiment according to the present invention Sectional view of the integrated touch display.
如第1A圖所繪示的實施方式中,提供一低面內相位延遲的1/4波長波片100。波片是一種具雙折射(Birefringence)性質的光學元件。當光通過此元件時,電場沿某一方向(F軸,快軸)振動的光速度較快,而電場沿與此方向相垂直之方向(S軸,慢軸)振動的光速度較慢。因此,當此二方向之光通過此光學元件時會產生相位差,若此相位差恰等於四分之一波長時,稱此光學元件為1/4波片(Quarter-Wave Plate,QWP)。1/4波片是利用此雙折射光學元件之厚度來控制,並且二個電場振動方向產生之相位差與通過此元件之光波長有關。此外,光學延遲(R)係指雙折射率乘以膜之厚度,R=△n×d,其中△n代表雙折射率,d是光學膜厚度。雙折射率分為面內折射率△nin=nx-ny和面外折射率△nth=nz-(nx+ny)/2,其中Z軸方向為光學膜的厚度方向,X軸是指正交於Z軸的平面內最大折射率的方向,Y軸是指正交於X軸和Z軸的方向。nz是指光學膜沿Z軸方向的折射率,nx是指光學膜沿X軸方向的折射率,ny是指光學膜沿Y軸方向的折射率。因此,面內相位延遲由Re=(nx-ny)×d表示,面外相位延遲由Rth=[nz-(nx+ny)/2]×d表示。在本實施例中,低面內相位延遲的1/4波長光學膜100是指面內相位延遲Re小於300奈米,例如是面內相位延遲Re為250、200、150、100奈米。在本實施例中,低面內相位延遲的1/4波長波片100是由環狀烯烴單體共聚合物(Cyclic Olefin Copolymer,COC)或環狀烯烴單體聚合物(Cyclic Olefin Polymer,COP)所組成。 As shown in FIG. 1A, a quarter wave plate 100 with a low in-plane phase delay is provided. A wave plate is an optical element with birefringence properties. When light passes through this element, the speed of light in which the electric field vibrates in a certain direction (F-axis, fast axis) is faster, while the speed of the electric field in a direction perpendicular to this direction (S-axis, slow axis) is slower. Therefore, when the light in these two directions passes through the optical element, a phase difference is generated. If the phase difference is equal to a quarter wavelength, the optical element is called a quarter-wave plate (QWP). The 1/4 wave plate is controlled by the thickness of this birefringent optical element, and the phase difference between the two electric field vibration directions is related to the wavelength of light passing through this element. In addition, the optical retardation (R) refers to the birefringence multiplied by the thickness of the film, R = Δn × d, where Δn represents the birefringence, and d is the thickness of the optical film. Birefringence is divided into in-plane refractive index △ n in = n x -n y and out-of-plane refractive index △ n th = n z- (n x + n y ) / 2, where the Z-axis direction is the thickness direction of the optical film The X axis refers to the direction of the maximum refractive index in the plane orthogonal to the Z axis, and the Y axis refers to the directions orthogonal to the X axis and the Z axis. n z refers to the refractive index of the optical film along the Z axis direction, n x refers to the refractive index of the optical film along the X axis direction, and n y refers to the refractive index of the optical film along the Y axis direction. Therefore, the in-plane phase delay is represented by R e = (n x -n y ) × d, and the out-of-plane phase delay is represented by R th = [n z- (n x + n y ) / 2] × d. In the present embodiment, the optical 1/4 wavelength phase retardation film of low surface 100 refers to in-plane phase retardation R e is less than 300 nm, for example, in-plane phase retardation R e is 250,200,150,100 nm . In this embodiment, the quarter-wavelength plate 100 with a low in-plane retardation is made of a cyclic olefin monomer copolymer (Cyclic Olefin Copolymer, COC) or a cyclic olefin monomer polymer (Cyclic Olefin Polymer, COP). ).
請再繼續參考第1A圖,設置觸控電極層102於低面內相位延遲的1/4波長波片100的至少一表面上。在本實施例中,觸控電極層102可為單層氧化銦錫(Single Indium Tin Oxide,SITO),並設置在低面內相位延遲的1/4波長波片100上。在部分實施例中,觸控電極層102可為雙層氧化銦錫(Double Indium Tin Oxide,DITO),並設置在低面內相位延遲的1/4波長波片100相對兩側。在其他實施例中,觸控電極層102例如是奈米銀線、奈米銀粒子、奈米碳管、導電高分子或金屬。 Please continue to refer to FIG. 1A again, and set the touch electrode layer 102 on at least one surface of the quarter-wave plate 100 with a low in-plane phase delay. In this embodiment, the touch electrode layer 102 may be a single layer of indium tin oxide (SITO), and is disposed on the quarter-wave plate 100 with a low in-plane phase delay. In some embodiments, the touch electrode layer 102 may be a double indium tin oxide (DITO), and is disposed on opposite sides of the quarter-wave plate 100 with a low in-plane phase delay. In other embodiments, the touch electrode layer 102 is, for example, nano silver wires, nano silver particles, nano carbon tubes, conductive polymers, or metals.
如第1B圖所繪示的實施方式中,觸控電極層102為單層觸控電極層104,並利用雷射鑽孔(Laser Drill),以形成圖案化的單層觸控電極層104。在部分實施例中,單層觸控電極層104的圖案例如是正方形、長方形、平行四邊形、三角形或梯形。接著,使低面內相位延遲的1/4波長波片100與印刷電路軟板(Flexible Printed Circuit,FPC)106結合,其中印刷電路軟板106可以直接固定在低面內相位延遲的1/4波長波片100上。 As shown in FIG. 1B, the touch electrode layer 102 is a single touch electrode layer 104, and a laser drill is used to form a patterned single touch electrode layer 104. In some embodiments, the pattern of the single-layer touch electrode layer 104 is, for example, a square, a rectangle, a parallelogram, a triangle, or a trapezoid. Next, the 1/4 wavelength wave plate 100 with a low in-plane phase delay is combined with a flexible printed circuit (FPC) 106, where the printed circuit soft board 106 can be directly fixed at a 1/4 of the low in-plane phase delay Wavelength plate 100.
如第1C圖所繪示的實施方式中,上下翻轉印刷電路軟板106、低面內相位延遲的1/4波長波片100與單層觸控電極層104,以使單層觸控電極層104位於低面內相位延遲的1/4波長波片100之下。接著,在單層觸控電極層104下方貼合偏光層108,以使單層觸控電極層104位於低面內相位延遲的1/4波長波片100與偏光層108之間。接著,在偏光層108下方貼合保護層110,以使偏光層108設置於低面內相位延遲的1/4波長 波片100與保護層110之間,以形成一種複合基板300。在本實施例中,偏光層108的材質為聚乙烯醇(PVA),保護層110的材質為三醋酸纖維素(TAC)。本實施例所提供的複合基板300,其厚度可控制在170微米(μm)以下,因此,相較於傳統偏光板的層疊結構,本揭露所提供的複合基板300較薄。 As shown in FIG. 1C, the printed circuit board 106, the quarter-wave plate 100 with a low in-plane phase delay, and the single-layer touch electrode layer 104 are flipped up and down to make the single-layer touch electrode layer 104 is located below the quarter-wave plate 100 with a low in-plane phase delay. Next, a polarizing layer 108 is bonded under the single-layer touch electrode layer 104 so that the single-layer touch electrode layer 104 is located between the quarter-wave plate 100 and the polarizing layer 108 with a low in-plane retardation. Next, a protective layer 110 is bonded under the polarizing layer 108 so that the polarizing layer 108 is set at a quarter-wavelength with a low in-plane retardation. Between the wave plate 100 and the protective layer 110, a composite substrate 300 is formed. In this embodiment, the material of the polarizing layer 108 is polyvinyl alcohol (PVA), and the material of the protective layer 110 is cellulose triacetate (TAC). The thickness of the composite substrate 300 provided in this embodiment can be controlled below 170 micrometers (μm). Therefore, compared with the laminated structure of a conventional polarizing plate, the composite substrate 300 provided in this disclosure is thinner.
如第1D圖所繪示的實施方式中,將顯示面板112與底偏光板114依序貼附於複合基板300之下,以使顯示面板112位於複合基板300與底偏光板114之間。接著,移除印刷電路軟板106以形成一整合型觸控顯示器200。在本實施例中,觸控電極的基板已被整合至複合基板300。由於此整合型觸控顯示器200包含1/4波長波片,因此光線通過底偏光板114後為線偏振光,當此線偏振光再通過低面內相位延遲的1/4波長波片100後會產生橢圓偏振光,故解決了傳統觸控顯示器,當線偏振光之偏振方向與觀察者配戴之太陽眼鏡(具線偏振光特性)的偏振方向垂直時會出現黑屏的問題。此外,由於此1/4波長波片是採用低面內相位延遲的材料,因此也解決了傳統觸控顯示器中,當觸控電極的基板為塑料時,會出現彩虹紋的問題。 As shown in FIG. 1D, the display panel 112 and the bottom polarizing plate 114 are sequentially attached under the composite substrate 300 so that the display panel 112 is located between the composite substrate 300 and the bottom polarizing plate 114. Next, the printed circuit board 106 is removed to form an integrated touch display 200. In this embodiment, the substrate of the touch electrode has been integrated into the composite substrate 300. Since the integrated touch display 200 includes a 1/4 wavelength wave plate, light is linearly polarized after passing through the bottom polarizing plate 114. When the linearly polarized light passes through the 1/4 wavelength wave plate 100 with low in-plane phase delay, Elliptical polarized light is generated, so a conventional black and white display screen is solved when the polarized direction of linearly polarized light is perpendicular to the polarized direction of sunglasses (linearly polarized light) worn by the observer. In addition, because this quarter-wavelength plate is made of a material with low in-plane phase delay, it also solves the problem of rainbow stripes in the conventional touch display when the substrate of the touch electrode is plastic.
在部分實施例中,底偏光板114可為使偏光子層位於上下兩個保護子層之間的結構(未繪示),其中偏光子層的材質可為聚乙烯醇(PVA),而保護子層的材質可為三醋酸纖維素(TAC)。顯示面板112可為電子紙(Electronic-Paper)、超扭轉向列型液晶顯示器(Super Twisted Nematic Liquid-Crystal Display,STN LCD)、彩色薄膜型(Thin Film Transistors Liquid-Crystal Display,TFT LCD)、聚合物發 光二極管(Polymer Light Emiting Diode,PLED)、有機發光二極管(Organic Light Emitting Diode,OLED)。 In some embodiments, the bottom polarizing plate 114 may have a structure (not shown) in which the polarizing sublayer is located between the upper and lower protective sublayers, wherein the material of the polarizing sublayer may be polyvinyl alcohol (PVA), and the protective The material of the sub-layer may be cellulose triacetate (TAC). The display panel 112 may be an electronic paper (Electronic-Paper), a Super Twisted Nematic Liquid-Crystal Display (STN LCD), a thin film type (Thin Film Transistors Liquid-Crystal Display, TFT LCD), polymer Wufa Photodiode (Polymer Light Emitting Diode, PLED), organic light emitting diode (Organic Light Emitting Diode, OLED).
如第1E圖所繪示的實施方式中,將光學膠116設置於低面內相位延遲的1/4波長波片100之上。在此,光學膠116是指可以用於黏結透明光學元件的特別黏膠劑。在部分實施例中,光學膠116可為OCA(Optically Clear Adhesive)。 As shown in FIG. 1E, the optical glue 116 is disposed on the quarter-wave plate 100 with a low in-plane retardation. Here, the optical adhesive 116 refers to a special adhesive that can be used for bonding transparent optical elements. In some embodiments, the optical glue 116 may be OCA (Optically Clear Adhesive).
如第1F圖所繪示的實施方式中,整合型觸控顯示器200還可包括保護蓋板118,其係藉由光學膠116貼合至低面內相位延遲的1/4波長波片100之上。這種藉由光學膠116貼合的方式也可稱為直接接合(Direct Bonding)方式。在其他實施例中,保護蓋板118並未透過光學膠116貼合至低面內相位延遲的1/4波長波片100。取而代之的是,在保護蓋板118與低面內相位延遲的1/4波長波片100之間為空氣層(Air Layer),此種藉由空氣層貼合的方式可稱為空氣接合(Air Bonding)方式(未繪示)。保護蓋板118的材料可為玻璃(如無鹼玻璃、鈉鈣玻璃、強化玻璃、Gorilla玻璃、Dragontrail鋁矽酸鹽玻璃)、藍寶石、HC保護膜、裝飾膜(Deco Film)、功能膜(AG、AS、AR、LR等)、塑料蓋板(PC、PMMA、PMMA/PC、PMMA/PC/PMMA等)。 As shown in FIG. 1F, the integrated touch display 200 may further include a protective cover 118, which is adhered to the 1/4 wavelength wave plate 100 with a low in-plane phase delay by the optical adhesive 116. on. This method of bonding by the optical adhesive 116 may also be referred to as a direct bonding method. In other embodiments, the protective cover 118 is not adhered to the quarter-wavelength plate 100 with a low in-plane phase delay through the optical glue 116. Instead, an air layer is formed between the protective cover 118 and the quarter-wave plate 100 with a low in-plane retardation. This method of bonding by air layers can be called air bonding (Air Bonding). Bonding) method (not shown). The material of the protective cover plate 118 can be glass (such as alkali-free glass, soda lime glass, strengthened glass, Gorilla glass, Dragontrail aluminosilicate glass), sapphire, HC protective film, decorative film (Deco Film), functional film (AG , AS, AR, LR, etc.), plastic cover (PC, PMMA, PMMA / PC, PMMA / PC / PMMA, etc.).
第2圖與第3圖分別繪示依據本發明之實施例之整合型觸控顯示器400、600的不同態樣。 FIG. 2 and FIG. 3 respectively show different aspects of the integrated touch displays 400 and 600 according to the embodiment of the present invention.
如第2圖所繪示的實施方式中,與第1E圖不同的是單層觸控電極層104的位置。在第2圖中,單層觸控電極層104的位置位於光學膠116與低面內相位延遲的1/4波長波片 100之間。更詳細的說,第2圖的整合型觸控顯示器400是由光學膠116、複合基板500、顯示面板112與底偏光板114所組成。複合基板500包含低面內相位延遲的1/4波長波片100、偏光層108、保護層110和位於低面內相位延遲的1/4波長波片100與光學膠116之間的單層觸控電極層104。在本實施例中,低面內相位延遲的1/4波長波片100是指面內相位延遲Re小於300奈米,例如是面內相位延遲Re為250、200、150、100奈米。本實施例所提供的複合基板500,其厚度可控制在170微米(μm)以下。 The embodiment shown in FIG. 2 is different from FIG. 1E in the position of the single-layer touch electrode layer 104. In FIG. 2, the position of the single-layer touch electrode layer 104 is located between the optical adhesive 116 and the quarter-wave plate 100 with a low in-plane retardation. In more detail, the integrated touch display 400 in FIG. 2 is composed of an optical adhesive 116, a composite substrate 500, a display panel 112, and a bottom polarizing plate 114. The composite substrate 500 includes a quarter-wave plate 100 with a low in-plane retardation, a polarizing layer 108, a protective layer 110, and a single-layer contact between the quarter-wave plate 100 with a low in-plane retardation and the optical glue 116.控 electrode layer 104. In the present embodiment, the low in-plane phase retardation of the 1/4 wavelength plate 100 refers to a wave plane retardation R e is less than 300 nm, for example, in-plane phase retardation R e is 250,200,150,100 nm . The thickness of the composite substrate 500 provided in this embodiment can be controlled below 170 micrometers (μm).
如第3圖所繪示的實施方式中,與第1E圖不同的是觸控電極層102的配置。第3圖的整合型觸控顯示器600是由光學膠116、複合基板700、顯示面板112與底偏光板114所組成。複合基板700包含觸控電極層102、低面內相位延遲的1/4波長波片100、偏光層108與保護層110。在本實施例中,複合基板700的觸控電極層102包含第一觸控電極層120、第二觸控電極層122。在本實施例中,相對應之第一觸控電極層120與第二觸控電極層122分別位於低面內相位延遲的1/4波長波片100的兩側。更詳細的說,第一觸控電極層120設置於低面內相位延遲的1/4波長波片100與光學膠116之間,第二觸控電極層122設置於低面內相位延遲的1/4波長波片100與偏光層108之間。在本實施例中,相對應之第一觸控電極層120與第二觸控電極層122可為一雙層氧化銦錫(DITO)結構。在部分實施例中,第一觸控電極層120與第二觸控電極層122的圖案相同,例如是正方形、長方形、平行四邊形、三角形或梯形。在其他 實施例中,第一觸控電極層120與第二觸控電極層122的圖案不同。在其他實施例中,第一觸控電極層120與第二觸控電極層122的圖案互補。在本實施例中,低面內相位延遲的1/4波長波片100是指面內相位延遲Re小於300奈米,例如是面內相位延遲Re為250、200、150、100奈米。 The embodiment shown in FIG. 3 is different from FIG. 1E in the configuration of the touch electrode layer 102. The integrated touch display 600 in FIG. 3 is composed of an optical adhesive 116, a composite substrate 700, a display panel 112, and a bottom polarizing plate 114. The composite substrate 700 includes a touch electrode layer 102, a quarter-wavelength plate 100 with a low in-plane retardation, a polarizing layer 108, and a protective layer 110. In this embodiment, the touch electrode layer 102 of the composite substrate 700 includes a first touch electrode layer 120 and a second touch electrode layer 122. In this embodiment, the corresponding first touch electrode layer 120 and the second touch electrode layer 122 are respectively located on two sides of the quarter-wavelength plate 100 with a low in-plane phase delay. In more detail, the first touch electrode layer 120 is disposed between the 1/4 wavelength wave plate 100 and the optical glue 116 with a low in-plane phase delay, and the second touch electrode layer 122 is disposed between 1 and the low in-plane phase delay. Between the / 4 wavelength wave plate 100 and the polarizing layer 108. In this embodiment, the corresponding first touch electrode layer 120 and the second touch electrode layer 122 may be a double-layer indium tin oxide (DITO) structure. In some embodiments, the patterns of the first touch electrode layer 120 and the second touch electrode layer 122 are the same, such as a square, a rectangle, a parallelogram, a triangle, or a trapezoid. In other embodiments, the patterns of the first touch electrode layer 120 and the second touch electrode layer 122 are different. In other embodiments, the patterns of the first touch electrode layer 120 and the second touch electrode layer 122 are complementary. In the present embodiment, the low in-plane phase retardation of the 1/4 wavelength plate 100 refers to a wave plane retardation R e is less than 300 nm, for example, in-plane phase retardation R e is 250,200,150,100 nm .
本發明提供一種整合型觸控顯示器,其包含複合基板、底偏光板與顯示面板,其中顯示面板位於複合基板與底偏光板之間。更詳細的說,整合型觸控顯示器將傳統位於顯示面板兩側的兩個偏光板之一置換成一複合基板。此複合基板是由低面內相位延遲的1/4波長波片、觸控電極層、偏光層和保護層所組成。本發明實施例中,整合型觸控顯示器之複合基板具有1/4波長波片。因此,當光線通過此整合型觸控顯示器之底偏光板後會產生線偏振光,此線偏振光再通過複合基板中之1/4波長波片後會產生橢圓偏振光。因此,本發明實施例所提供之整合型觸控顯示器能解決傳統觸控顯示器,當線偏振光的偏振方向與觀察者配戴之太陽眼鏡(具線偏振光特性)的偏振方向垂直時會產生黑屏的問題。又,此1/4波長波片是採用低面內相位延遲的材料,因此也解決了傳統觸控顯示器中,當觸控電極的基板為塑料時,會產生彩虹紋的問題。此外,本發明實施例的整合型觸控顯示器相較於傳統觸控顯示器具有較薄的整體厚度。 The invention provides an integrated touch display, which comprises a composite substrate, a bottom polarizing plate and a display panel, wherein the display panel is located between the composite substrate and the bottom polarizing plate. In more detail, the integrated touch display replaces one of the two polarizing plates traditionally located on both sides of the display panel with a composite substrate. The composite substrate is composed of a quarter-wave plate with a low in-plane retardation, a touch electrode layer, a polarizing layer, and a protective layer. In the embodiment of the present invention, the composite substrate of the integrated touch display has a quarter-wavelength plate. Therefore, when the light passes through the bottom polarizing plate of the integrated touch display, linearly polarized light is generated, and the linearly polarized light passes through the 1/4 wavelength wave plate in the composite substrate to generate elliptically polarized light. Therefore, the integrated touch display provided by the embodiment of the present invention can solve the conventional touch display. When the polarization direction of linearly polarized light is perpendicular to the polarization direction of the sunglasses (with linearly polarized light characteristics) worn by the observer, Black screen issue. In addition, the 1/4 wavelength wave plate is made of a material with a low in-plane phase delay, so it also solves the problem that a rainbow pattern is generated when the substrate of a touch electrode in a conventional touch display is plastic. In addition, the integrated touch display of the embodiment of the present invention has a thinner overall thickness than a conventional touch display.
雖然本發明已以實施例揭露如上,然其並非用以限定本發明,任何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,當可作些許之更動與潤飾,故本發明 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 the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. this invention The scope of protection shall be determined by the scope of the attached patent application.
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TW201908943A (en) | 2019-03-01 |
CN107340922A (en) | 2017-11-10 |
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