TWM470313U

TWM470313U - Touch electrode device

Info

Publication number: TWM470313U
Application number: TW102215739U
Authority: TW
Inventors: Cheng-Kai Wang
Original assignee: Henghao Technology Co Ltd
Priority date: 2013-08-22
Filing date: 2013-08-22
Publication date: 2014-01-11

Abstract

A touch electrode device includes first electrodes, second electrodes, first conducting lines, second conducting lines and a conducting particle layer. The first electrodes are formed on an upper surface of a first glass/ transparent substrate. The second electrodes are formed on a bottom surface of a second transparent substrate. The upper surface of the first transparent substrate is adhered to the bottom surface of the second transparent substrate. The first conducting lines and second conducting lines are formed on a border area of the upper surface of the first transparent substrate, and the first conducting lines are electrically connected to the first electrodes. The conducting particle layer, disposed between the first transparent substrate and the second transparent substrate, includes a plurality of conducting particles, which are configured to electrically connect the second conducting lines and the second electrodes.

Description

觸控電極裝置Touch electrode device

本創作係有關一種觸控電極裝置，特別是關於一種雙層電極裝置。The present invention relates to a touch electrode device, and more particularly to a two-layer electrode device.

觸控顯示器係結合感測技術及顯示技術所形成的一種輸入/輸出裝置，普遍使用於電子裝置中，例如可攜式及手持式電子裝置。The touch display is an input/output device formed by combining sensing technology and display technology, and is commonly used in electronic devices, such as portable and handheld electronic devices.

電容式觸控面板為一種常用的觸控面板，其利用電容耦合效應以偵測觸碰位置。當手指觸碰電容式觸控面板的表面時，相應位置的電容量會受到改變，因而得以偵測觸碰位置。A capacitive touch panel is a commonly used touch panel that utilizes a capacitive coupling effect to detect a touch position. When the finger touches the surface of the capacitive touch panel, the capacitance of the corresponding position is changed, thereby detecting the touch position.

第一A圖與第一B圖分別顯示傳統觸控面板100的剖面圖及其製程示意圖。如圖所示，複數個第一電極112設置於第一基板110的上表面，複數個第二電極122設置於第二基板120的下表面。其中，第一基板110的上表面係藉由光學膠層130以貼合於第二基板120的下表面，而第一電極112與第二電極122可互為實質正交。The first A diagram and the first B diagram respectively show a cross-sectional view of the conventional touch panel 100 and a schematic diagram of the process thereof. As shown in the figure, a plurality of first electrodes 112 are disposed on the upper surface of the first substrate 110 , and a plurality of second electrodes 122 are disposed on the lower surface of the second substrate 120 . The upper surface of the first substrate 110 is bonded to the lower surface of the second substrate 120 by the optical adhesive layer 130, and the first electrode 112 and the second electrode 122 are substantially orthogonal to each other.

在上述傳統觸控面板100中，亦必須分別在第一基板110的上表面及第二基板120的下表面之外圍處透過網印或黃光製程製作第一導線114及第二導線124，其中第一導線114及第二導線124分別連接第一電極112與第二電極122，進而傳送所偵測到觸碰位置之感應訊號以進行訊號處理。然而，由於傳統觸控面板之導線的設計及製作過程繁複耗時，往往導致製作成本甚高且良率不佳。In the above-mentioned conventional touch panel 100, the first wire 114 and the second wire 124 must be formed through the screen printing or the yellow light process at the periphery of the upper surface of the first substrate 110 and the lower surface of the second substrate 120, respectively. The first wire 114 and the second wire 124 are respectively connected to the first electrode 112 and the second electrode 122, and then transmit the sensing signal of the detected touch position for signal processing. However, since the design and manufacturing process of the wires of the conventional touch panel are complicated and time consuming, the production cost is high and the yield is poor.

鑑於傳統觸控面板具有複雜的製程工序且其製造成本過高，因此亟需提出一種新穎的觸控電極裝置，用以改善傳統觸控面板的缺點。In view of the complicated process of the conventional touch panel and the high manufacturing cost thereof, it is urgent to propose a novel touch electrode device for improving the disadvantages of the conventional touch panel.

鑑於上述，本創作實施例的目的之一在於提出一種觸控電極裝置，其導線之配置設計，可藉由簡化製造工序予以製作實現，因而可有效降低製作成本，並同時提升產品良率。In view of the above, one of the purposes of the present embodiment is to provide a touch electrode device in which the arrangement of the wires can be fabricated by simplifying the manufacturing process, thereby effectively reducing the manufacturing cost and improving the product yield.

根據本創作之一實施例，一種觸控電極裝置包含複數個第一電極、複數個第二電極、複數個第一導線、複數個第二導線及導電粒子層。第一電極形成於第一透明基板之上表面。第二電極形成於第二透明基板之下表面，其中第一透明基板之上表面貼合於第二透明基板之下表面，而第一電極及第二電極相互絕緣。第一導線及第二導線皆形成於第一透明基板之上表面的周邊區，其中第一導線電性連接至第一電極。導電粒子層設置於第一透明基板與第二透明基板之間，其中導電粒子層具有複數個導電粒子，用以電性連接第二導線及第二電極。According to an embodiment of the present invention, a touch electrode device includes a plurality of first electrodes, a plurality of second electrodes, a plurality of first wires, a plurality of second wires, and a conductive particle layer. The first electrode is formed on an upper surface of the first transparent substrate. The second electrode is formed on the lower surface of the second transparent substrate, wherein the upper surface of the first transparent substrate is attached to the lower surface of the second transparent substrate, and the first electrode and the second electrode are insulated from each other. The first wire and the second wire are both formed in a peripheral region of the upper surface of the first transparent substrate, wherein the first wire is electrically connected to the first electrode. The conductive particle layer is disposed between the first transparent substrate and the second transparent substrate, wherein the conductive particle layer has a plurality of conductive particles for electrically connecting the second wire and the second electrode.

請同時參照第二A圖及第二B圖，第二A顯示本創作實施例之觸控電極裝置200的剖面圖，第二B圖顯示本創作實施例之觸控電極裝置200的製程，其中圖式僅顯示與實施例相關的組成元件。Referring to FIG. 2A and FIG. 2B, the second A shows a cross-sectional view of the touch electrode device 200 of the present embodiment, and the second B shows the manufacturing process of the touch electrode device 200 of the present embodiment. The drawings show only the constituent elements associated with the embodiments.

本實施例之觸控電極裝置200主要包含複數個第一電極212、複數個第二電極222、複數個第一導線214、複數個第二導線224及導電粒子層240。第一電極212形成於一第一透明基板210之上表面，其中每一第一電極212沿一第一方向平行排列。第二電極222形成於一第二透明基板220之下表面，其中每一第一電極222沿一第二方向平行排列，而第一方向與第二方向實質上相互正交。並且，第一透明基板210之上表面貼合於第二透明基板220之下表面，其中第一電極212及第二電極222相互絕緣。在一實施例中，觸控電極裝置200更包含一光學膠層230，其位於第一透明基板210與第二透明基板220之間，其中光學膠層230之上下表面分別貼合於第一電極212及第二電極222。The touch electrode device 200 of the present embodiment mainly includes a plurality of first electrodes 212, a plurality of second electrodes 222, a plurality of first wires 214, a plurality of second wires 224, and a conductive particle layer 240. The first electrode 212 is formed on an upper surface of the first transparent substrate 210, wherein each of the first electrodes 212 is arranged in parallel along a first direction. The second electrode 222 is formed on a lower surface of the second transparent substrate 220, wherein each of the first electrodes 222 is arranged in parallel along a second direction, and the first direction and the second direction are substantially orthogonal to each other. Moreover, the upper surface of the first transparent substrate 210 is bonded to the lower surface of the second transparent substrate 220, wherein the first electrode 212 and the second electrode 222 are insulated from each other. In one embodiment, the touch electrode device 200 further includes an optical adhesive layer 230 between the first transparent substrate 210 and the second transparent substrate 220, wherein the upper surface of the optical adhesive layer 230 is respectively attached to the first electrode. 212 and second electrode 222.

然而上述第一透明基板210與第二透明基板220的材質可為透明絕緣材料，例如玻璃、聚碳酸酯（Polycarbonate, PC）、聚對苯二甲酸乙二酯（Polyethylene terephthalate, PET）、聚乙烯（Polyethylen, PE）、聚氯乙烯（Polyvinyl Chloride, PVC）、聚丙烯（Poly propylene, PP）、聚苯乙烯（Poly styrene, PS）、聚甲基丙烯酸甲酯（Polymethyl methacrylate, PMMA）或環烯烴共聚合物（Cyclic olefin copolymer, COC）。However, the material of the first transparent substrate 210 and the second transparent substrate 220 may be a transparent insulating material, such as glass, polycarbonate (Polycarbonate, PC), polyethylene terephthalate (PET), polyethylene. (Polyethylen, PE), Polyvinyl Chloride (PVC), Polypropylene (PP), Polystyrene (PS), Polymethyl methacrylate (PMMA) or Cyclic Olefin Cyclic olefin copolymer (COC).

其次，如圖所示，第一導線214形成於第一透明基板210之上表面的周邊區，其中每一第一導線214之一端電性連接至一對應第一電極212之一端。第二導線224亦形成於第一透明基板210之上表面的周邊區。藉此導線配置設計，第一導線214與第二導線224則可透過網印或黃光製程同時形成於第一透明基板210，而簡化觸控電極裝置200之製程步驟，以提升製程良率。Next, as shown, the first wire 214 is formed on a peripheral region of the upper surface of the first transparent substrate 210, and one end of each of the first wires 214 is electrically connected to one end of a corresponding first electrode 212. The second wire 224 is also formed on a peripheral region of the upper surface of the first transparent substrate 210. With the wire arrangement design, the first wire 214 and the second wire 224 can be simultaneously formed on the first transparent substrate 210 through the screen printing or the yellow light process, thereby simplifying the process steps of the touch electrode device 200 to improve the process yield.

此外，導電粒子層240則設於第一透明基板210與第二透明基板220之間，其中導電粒子層240具有複數個導電粒子242。每一導電粒子242用以電性連接一第二導線224之一端及其所對應之第二電極212之一端。其中，導電粒子242的直徑可等於或大於第二電極222與第第二導線224的間距，致使第二電極222不經擠壓即可實質電性連接至導電粒子242，從而將第二電極222所偵測的感應訊號藉由導電粒子242及第二導線224傳送以進行訊號處理。在本實施例中，導電粒子242可為金粒子、銀粒子、碳粒子、鋅粒子、氧化銦錫粒子或上述之組合。In addition, the conductive particle layer 240 is disposed between the first transparent substrate 210 and the second transparent substrate 220 , wherein the conductive particle layer 240 has a plurality of conductive particles 242 . Each of the conductive particles 242 is electrically connected to one end of a second wire 224 and one end of the corresponding second electrode 212. The diameter of the conductive particles 242 may be equal to or greater than the spacing between the second electrode 222 and the second wire 224, so that the second electrode 222 is substantially electrically connected to the conductive particles 242 without being pressed, thereby the second electrode 222. The detected inductive signal is transmitted by the conductive particles 242 and the second wire 224 for signal processing. In the present embodiment, the conductive particles 242 may be gold particles, silver particles, carbon particles, zinc particles, indium tin oxide particles, or a combination thereof.

在一實施例中，導電粒子層240可更包含框膠或光學膠，而導電粒子242參雜於其中。因此當第二導線224透過網印或黃光製程形成於第一透明基板210之後，即可藉由參雜導電粒子242的框膠或光學膠塗佈於第二導線224上，使每一第二導線224之一端電性連接於至少一導電粒子242。In an embodiment, the conductive particle layer 240 may further comprise a sealant or an optical glue, and the conductive particles 242 are doped therein. Therefore, after the second wire 224 is formed on the first transparent substrate 210 through the screen printing or the yellow light process, the second wire 224 can be coated on the second wire 224 by the bonding of the conductive particles 242. One end of the two wires 224 is electrically connected to the at least one conductive particle 242.

在另一實施例中，導電粒子層240可為一導電膠帶，而導電粒子242則散佈於其中。當第二導線224形成於第一透明基板210之後，即可藉由將導電膠帶貼合於第二導線224上，使每一第二導線224之一端對應電性連接於至少一導電粒子242。藉此，當第一透明基板210與第二透明基板相貼合後，則第一電極212即可透過導電粒子242將感應訊號傳送至位於第一透明基板210之第一導線224。In another embodiment, the conductive particle layer 240 can be a conductive tape with conductive particles 242 interspersed therein. After the second conductive line 224 is formed on the first transparent substrate 210, one end of each of the second conductive lines 224 is electrically connected to the at least one conductive particle 242 by bonding the conductive tape to the second conductive line 224. Therefore, after the first transparent substrate 210 and the second transparent substrate are bonded together, the first electrode 212 can transmit the sensing signal to the first conductive line 224 of the first transparent substrate 210 through the conductive particles 242.

再者，上述第一電極212與第二電極222可包含透明導電材料。其中透明導電材料係為一氧化銦錫(Indium Tin Oxide, ITO)、一石墨烯(Graphene)、一摻鋁氧化鋅(Al-doped ZnO, AZO)、一氧化鋅(zinc oxide, ZnO)、一摻銻氧化錫(ATO)、一摻鎵氧化鋅 (Ga Doped ZnO, GZO)、一摻氟二氧化錫(F Doped SnO2, FTO)或其組合所組成群體的其中之一。Furthermore, the first electrode 212 and the second electrode 222 may include a transparent conductive material. The transparent conductive material is Indium Tin Oxide (ITO), Graphene, Al-doped ZnO (AZO), Zinc Oxide (ZnO), One of a group consisting of antimony doped tin oxide (ATO), a gallium doped zinc oxide (Ga Doped ZnO, GZO), a fluorine doped tin oxide (F Doped SnO 2 , FTO), or a combination thereof.

在另一實施例中，上述第一電極212與第二電極222則可為非透明導電材料所形成的透光（light-transmissive）結構。非透明導電材料可為複數奈米金屬線（metal nanowire），例如奈米銀線或奈米銅線；或者複數奈米金屬網（metal nanonet），例如奈米銀網或奈米銅網。奈米金屬線或金屬網的內徑為奈米等級，亦即可介於數奈米至數百奈米之間。奈米金屬線或金屬網可藉由塑膠材料（例如樹脂）予以固定。由於奈米金屬線/網非常細，非人眼可以觀察得到，因此由奈米金屬線/網所構成之第一電極212與第二電極222的透光性極佳，且觸控電極裝置200的整體厚度也得以降低。奈米金屬線/網呈平面二維分佈，因此由奈米金屬線/網所構成的第一電極212與第二電極222之導電性於平面的各個方向大致相等。In another embodiment, the first electrode 212 and the second electrode 222 may be light-transmissive structures formed by a non-transparent conductive material. The non-transparent conductive material may be a plurality of metal nanowires, such as nano silver wires or nano copper wires; or a plurality of metal nanonets, such as a nano silver mesh or a nano copper mesh. The inner diameter of the nanowire or metal mesh is in the nanometer range, and can be between several nanometers and hundreds of nanometers. The nanowire or metal mesh can be fixed by a plastic material such as a resin. Since the nanowire/wire is very thin and can be observed by a non-human eye, the first electrode 212 and the second electrode 222 composed of a nanowire/wire are excellent in light transmittance, and the touch electrode device 200 is The overall thickness is also reduced. The nanowire/net is distributed in a two-dimensional plane, so that the conductivity of the first electrode 212 and the second electrode 222 composed of the nanowire/net is substantially equal in each direction of the plane.

然而，依據本實施例之另一特徵，第一電極212與第二電極222亦可包含光敏（photosensitive）材料（例如壓克力），即可藉由曝光顯影製程形成所要的電極形狀（pattern），而有效簡化製程步驟及設備。However, according to another feature of the embodiment, the first electrode 212 and the second electrode 222 may also include a photosensitive material (eg, acryl), that is, a desired electrode pattern may be formed by an exposure and development process. , effectively simplifying the process steps and equipment.

請參照第二C圖，其顯示觸控面板200的側視圖。如圖所示，第一導線214與第二導線224之另一端則皆設置於觸控面板200之同一側邊，如此即可進行軟板貼合(FCP bonding)製程，而觸控面板200所偵測到的感應訊號即可透過第一導線214與第二導線224傳送到軟板予以執行後續的訊號處理。Please refer to FIG. 2C, which shows a side view of the touch panel 200. As shown in the figure, the other ends of the first wire 214 and the second wire 224 are disposed on the same side of the touch panel 200, so that the FCP bonding process can be performed, and the touch panel 200 The detected sensing signal can be transmitted to the flexible board through the first wire 214 and the second wire 224 to perform subsequent signal processing.

其中雖然第二C圖中之透明基板係顯示具有二維輪廓，然而本創作不以此為限，即其可為二維或三維輪廓，分別應用於二維或三維的觸控顯示。在一實施例中，透明基板包含可撓性材料或硬性材料，並且透明基板之表面材質可經由特殊工藝處理後，以具有抗磨、抗刮、抗反射、防眩光及防指紋等功能特性。Although the transparent substrate display in the second C diagram has a two-dimensional contour, the present invention is not limited thereto, that is, it can be a two-dimensional or three-dimensional contour, and is respectively applied to a two-dimensional or three-dimensional touch display. In an embodiment, the transparent substrate comprises a flexible material or a hard material, and the surface material of the transparent substrate can be processed by a special process to have functional properties such as abrasion resistance, scratch resistance, anti-reflection, anti-glare and anti-fingerprint.

此外，觸控電極裝置200亦可更包含一保護薄膜260，其設於第一透明基板210之下表面，用以包覆第一透明基板210並提供保護效果。In addition, the touch electrode device 200 further includes a protective film 260 disposed on the lower surface of the first transparent substrate 210 for covering the first transparent substrate 210 and providing a protective effect.

以上所述僅為本創作之較佳實施例而已，並非用以限定本創作之申請專利範圍；凡其它未脫離創作所揭示之精神下所完成之等效改變或修飾，均應包含在下述之申請專利範圍內。The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the patent application of the present invention; any equivalent changes or modifications made without departing from the spirit of the disclosure should be included in the following Within the scope of the patent application.

100‧‧‧觸控面板
110‧‧‧第一基板
112‧‧‧第一電極
114‧‧‧第一導線
120‧‧‧第二基板
122‧‧‧第二電極
124‧‧‧第二導線
130‧‧‧光學膠層
200‧‧‧觸控電極裝置
210‧‧‧第一透明基板
212‧‧‧第一電極
214‧‧‧第一導線
220‧‧‧第二透明基板
222‧‧‧第二電極
224‧‧‧第二導線
230‧‧‧光學膠層
240‧‧‧導電粒子層
242‧‧‧導電粒子
260‧‧‧保護薄膜100‧‧‧ touch panel
110‧‧‧First substrate
112‧‧‧First electrode
114‧‧‧First wire
120‧‧‧second substrate
122‧‧‧second electrode
124‧‧‧Second wire
130‧‧‧Optical adhesive layer
200‧‧‧Touch electrode device
210‧‧‧First transparent substrate
212‧‧‧First electrode
214‧‧‧First wire
220‧‧‧Second transparent substrate
222‧‧‧second electrode
224‧‧‧second wire
230‧‧‧Optical adhesive layer
240‧‧‧ Conductive particle layer
242‧‧‧ conductive particles
260‧‧‧protective film

第一A圖顯示傳統觸控面板的剖面圖。第一B圖顯示傳統觸控面板的製程示意圖。第二A圖顯示本創作一實施例之觸控電極裝置的剖面圖。第二B圖顯示第二A圖之觸控電極裝置的製程示意圖。第二C圖顯示本創作一實施例之觸控電極裝置的側視圖。The first A picture shows a cross-sectional view of a conventional touch panel. The first B diagram shows a schematic diagram of the process of the conventional touch panel. FIG. 2A is a cross-sectional view showing the touch electrode device of an embodiment of the present invention. FIG. 2B is a schematic view showing the process of the touch electrode device of FIG. FIG. 2C is a side view showing the touch electrode device of an embodiment of the present invention.

200‧‧‧觸控電極裝置200‧‧‧Touch electrode device

210‧‧‧第一透明基板210‧‧‧First transparent substrate

212‧‧‧第一電極212‧‧‧First electrode

220‧‧‧第二透明基板220‧‧‧Second transparent substrate

222‧‧‧第二電極222‧‧‧second electrode

224‧‧‧第二導線224‧‧‧second wire

230‧‧‧光學膠層230‧‧‧Optical adhesive layer

240‧‧‧導電粒子層240‧‧‧ Conductive particle layer

242‧‧‧導電粒子242‧‧‧ conductive particles

Claims

一種觸控電極裝置，包含：複數個第一電極，形成於一第一透明基板之上表面；複數個第二電極，形成於一第二透明基板之下表面，其中該第一透明基板之上表面貼合於該第二透明基板之下表面，而且該些第一電極及該些第二電極相互絕緣；複數個第一導線，形成於該第一透明基板之上表面的周邊區，其中該些第一導線之一端電性連接至該些第一電極；複數個第二導線，形成於該第一透明基板之上表面的周邊區；及一導電粒子層，設於該第一透明基板與該第二透明基板之間，其中該導電粒子層具有複數個導電粒子，用以電性連接該些第二導線及該些第二電極。 A touch electrode device includes: a plurality of first electrodes formed on an upper surface of a first transparent substrate; and a plurality of second electrodes formed on a lower surface of the second transparent substrate, wherein the first transparent substrate The surface is attached to the lower surface of the second transparent substrate, and the first electrodes and the second electrodes are insulated from each other; a plurality of first wires are formed on a peripheral region of the upper surface of the first transparent substrate, wherein the One of the first wires is electrically connected to the first electrodes; a plurality of second wires are formed on a peripheral region of the upper surface of the first transparent substrate; and a conductive particle layer is disposed on the first transparent substrate Between the second transparent substrates, the conductive particle layer has a plurality of conductive particles for electrically connecting the second wires and the second electrodes.

如申請專利範圍第1項所述之觸控電極裝置，其中每一該些導電粒子的直徑等於或大於該些第二電極與該些第二導線的間距。 The touch electrode device of claim 1, wherein each of the conductive particles has a diameter equal to or larger than a distance between the second electrodes and the second wires.

如申請專利範圍第1項所述之觸控電極裝置，其中該些導電粒子為金粒子、銀粒子、碳粒子、鋅粒子、氧化銦錫粒子或上述之組合。 The touch electrode device according to claim 1, wherein the conductive particles are gold particles, silver particles, carbon particles, zinc particles, indium tin oxide particles or a combination thereof.

如申請專利範圍第1項所述之觸控電極裝置，其中該導電粒子層可更包含框膠或光學膠。 The touch electrode device of claim 1, wherein the conductive particle layer further comprises a sealant or an optical glue.

如申請專利範圍第1項所述之觸控電極裝置，其中該導電粒子層為一導電膠帶。 The touch electrode device of claim 1, wherein the conductive particle layer is a conductive tape.

如申請專利範圍第1項所述之觸控電極裝置，其中該些第一電極及該些第二電極包含透明導電材料，並且其中該透明導電材料係為一氧化銦錫(Indium Tin Oxide,ITO)、一石墨烯(Graphene)、一摻鋁氧化鋅(Al-doped ZnO, AZO)、一氧化鋅(zinc oxide,ZnO)、一摻銻氧化錫(ATO)、一摻鎵氧化鋅(Ga Doped ZnO,GZO)、一摻氟二氧化錫(F Doped SnO2,FTO)或其組合所組成群體的其中之一。 The touch electrode device of claim 1, wherein the first electrodes and the second electrodes comprise a transparent conductive material, and wherein the transparent conductive material is Indium Tin Oxide (ITO). ), a graphene (Graphene), an aluminum-doped zinc oxide (Al-doped ZnO, AZO), zinc oxide (ZnO), an antimony doped tin oxide (ATO), a gallium doped zinc oxide (Ga Doped ZnO, GZO), a fluorine doped tin oxide (F Doped SnO2, FTO) or Combine one of the groups formed.

如申請專利範圍第1項所述之觸控電極裝置，其中該些第一電極及該些第二電極包含複數奈米金屬線(metal nanowire)或複數奈米金屬網(metal nanonet)。 The touch electrode device of claim 1, wherein the first electrodes and the second electrodes comprise a plurality of metal nanowires or a plurality of metal nanonets.

如申請專利範圍第7項所述之觸控電極裝置，其中該些奈米金屬線或奈米金屬網的內徑介於數奈米至數百奈米之間。 The touch electrode device of claim 7, wherein the inner diameter of the nano metal wire or the nano metal mesh is between several nanometers and several hundred nanometers.