TWM459449U - Touch panel - Google Patents
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- TWM459449U TWM459449U TW101223273U TW101223273U TWM459449U TW M459449 U TWM459449 U TW M459449U TW 101223273 U TW101223273 U TW 101223273U TW 101223273 U TW101223273 U TW 101223273U TW M459449 U TWM459449 U TW M459449U
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Abstract
Description
本創作係有關一種觸控面板，特別是關於一種具有虛擬電極的觸控面板。 The present invention relates to a touch panel, and more particularly to a touch panel having a virtual electrode.
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，因而得以偵測到觸碰位置。 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, and the touch position is detected.
傳統觸控面板一般係由垂直電極列與水平電極列所組成。垂直電極列與水平電極列彼此間必須留有間隙(gap)，才不會於兩者之間造成短路。當使用者由上俯視觸控面板時，會產生視覺上的痕跡(trace)現象(或稱為光學可視性)。 A conventional touch panel generally consists of a vertical electrode column and a horizontal electrode column. There must be a gap between the vertical electrode column and the horizontal electrode column to prevent a short circuit between the two. When the user looks down from the touch panel, a visual trace phenomenon (or optical visibility) is generated.
此外，垂直電極列與水平電極列之間會產生基礎電容值(base capacitance)，其會降低整體的有效(effective)觸控電容值，因而降低觸控敏感度。為了減少前述基礎電容值以增加整體的有效觸控電容值，方法之一是增加垂直電極列與水平電極列之間透明絕緣層的厚度。然而，增加絕緣層厚度卻會使得視覺痕跡現象更為嚴重。 In addition, a base capacitance is generated between the vertical electrode column and the horizontal electrode column, which reduces the overall effective touch capacitance value, thereby reducing touch sensitivity. In order to reduce the aforementioned basic capacitance value to increase the overall effective touch capacitance value, one of the methods is to increase the thickness of the transparent insulating layer between the vertical electrode column and the horizontal electrode column. However, increasing the thickness of the insulation layer will make the visual trace phenomenon more serious.
鑑於傳統觸控面板具有光學可視性，垂直、水平電極間會產生基礎電容值，而且這兩者之間互為影響。因此亟需提出一種新穎的觸控面板，用以改善傳統觸控面板的缺點。 In view of the optical visibility of conventional touch panels, the basic capacitance values are generated between the vertical and horizontal electrodes, and the two influence each other. Therefore, it is urgent to propose a novel touch panel to improve the shortcomings of the conventional touch panel.
鑑於上述，本創作實施例提出一種觸控面板，其形成有虛擬電極，可大量減少視覺痕跡現象，因而可以配合使用較厚的透明基板於二電極層之間，不但可提升整體的有效觸控電容值且不會造成視覺痕跡現象的惡化。 In view of the above, the present invention provides a touch panel that is formed with a dummy electrode, which can greatly reduce the phenomenon of visual traces, so that a thick transparent substrate can be used between the two electrode layers, thereby improving the overall effective touch. The capacitance value does not cause deterioration of the visual trace phenomenon.
根據本創作實施例，觸控面板包含透明基板、第一感應電極層、複數第一虛擬(dummy)電極及第二感應電極層。第一感應電極層形成於透明基板的第一表面，該第一感應電極層包含複數第一電極。複數第一虛擬電極分別形成於第一感應電極層的該些第一電極之間，並與該些第一電極彼此電性絕緣。第二感應電極層形成於透明基板的第二表面並與第一表面相對。第二感應電極層包含複數第二電極，該些第一電極與該些第二電極的位置呈上下錯開排列。 According to the present embodiment, the touch panel includes a transparent substrate, a first sensing electrode layer, a plurality of first dummy electrodes, and a second sensing electrode layer. The first sensing electrode layer is formed on the first surface of the transparent substrate, and the first sensing electrode layer includes a plurality of first electrodes. The plurality of first dummy electrodes are respectively formed between the first electrodes of the first sensing electrode layer, and are electrically insulated from the first electrodes. The second sensing electrode layer is formed on the second surface of the transparent substrate and opposite to the first surface. The second sensing electrode layer includes a plurality of second electrodes, and the positions of the first electrodes and the second electrodes are vertically arranged in a staggered manner.
100‧‧‧觸控面板 100‧‧‧ touch panel
200‧‧‧觸控面板 200‧‧‧ touch panel
300‧‧‧觸控面板 300‧‧‧ touch panel
11‧‧‧透明覆蓋層 11‧‧‧Transparent overlay
12‧‧‧貼合層 12‧‧‧Fitting layer
13‧‧‧第一感應電極層 13‧‧‧First sensing electrode layer
131‧‧‧第一電極 131‧‧‧First electrode
141‧‧‧第一虛擬電極 141‧‧‧First virtual electrode
1411‧‧‧長形條 1411‧‧‧long strip
15‧‧‧透明基板 15‧‧‧Transparent substrate
16‧‧‧第二感應電極層 16‧‧‧Second sensing electrode layer
161‧‧‧第二電極 161‧‧‧second electrode
171‧‧‧第二虛擬電極 171‧‧‧Second virtual electrode
d1‧‧‧距離 D1‧‧‧ distance
d2‧‧‧寬度 D2‧‧‧Width
d3‧‧‧距離 D3‧‧‧ distance
第一A圖顯示本創作第一實施例之觸控面板的上視圖。 The first A diagram shows a top view of the touch panel of the first embodiment of the present creation.
第一B圖顯示沿第一A圖之剖面線1B-1B’的剖面視圖。 The first B diagram shows a cross-sectional view along section line 1B-1B' of the first A diagram.
第二圖顯示第一A圖之觸控面板的局部放大上視圖。 The second figure shows a partially enlarged top view of the touch panel of the first A.
第三圖顯示本創作第二實施例之觸控面板的剖面視圖。 The third figure shows a cross-sectional view of the touch panel of the second embodiment of the present invention.
第四圖顯示本創作第三實施例之觸控面板的剖面視圖。 The fourth figure shows a cross-sectional view of the touch panel of the third embodiment of the present creation.
第一A圖顯示本創作第一實施例之觸控面板100的上視圖，第一B圖則顯示沿第一A圖之剖面線1B-1B’的剖面視圖。本實施例雖以菱形電極作為例示，然而，也可使用其他形狀的電極。在本說明書中，方向“上”或“頂部”係指向觸碰位置，而方向“下”或“底部”則是背向觸碰的位置。 The first A is a top view of the touch panel 100 of the first embodiment of the present invention, and the first B is a cross-sectional view along the section line 1B-1B' of the first A. Although the rhombic electrode is exemplified in the present embodiment, other shapes of electrodes may be used. In this specification, the direction "up" or "top" points to the touch position, and the direction "down" or "bottom" is the position of the back touch.
在本實施例中，觸控面板100包含一透明覆蓋層11，其可由一或多個次層所組成。透明覆蓋層11的材質可為軟性或硬性絕緣材料，例如玻璃、聚碳酸酯(Polycarbonate,PC)、聚對苯二甲酸乙二酯(Polyethylene terephthalate,PET)、聚甲基丙烯酸甲酯(Polymethyl methacrylate,PMMA)或環烯烴共聚合物(Cyclic olefin copolymer,COC)。若使用的是軟性材料，則可形成可撓性(flexible)觸控面板。透明覆蓋層11除了具有保護的功能外，其頂部表面還可經處理或添加而具有抗磨、抗刮、抗反射或/且抗指紋的功能。 In this embodiment, the touch panel 100 includes a transparent cover layer 11 which may be composed of one or more sub-layers. The transparent cover layer 11 may be made of a soft or rigid insulating material such as glass, polycarbonate, PC, polyethylene terephthalate (PET), polymethyl methacrylate (Polymethyl methacrylate). , PMMA) or Cyclic olefin copolymer (COC). If a soft material is used, a flexible touch panel can be formed. In addition to its protective function, the transparent cover layer 11 can also be treated or added to have anti-wear, scratch resistance, anti-reflection and/or anti-fingerprint functions.
觸控面板100還包含第一感應電極層13，其藉由具黏性的貼合層12而附著於透明覆蓋層11的底部。貼合層12包含絕緣材質，例如透明光敏材料、高分子材料或光學膠(optically-clear adhesive,OCA)。然而，如果第一感應電極層13本身即含有黏膠材質，則可省略光學膠層12。在本實施例中，第一感應電極層13包含複數第一電極131，該些第一電極131串接為複數平行的第一電極列，如第一A圖所例示。 The touch panel 100 further includes a first sensing electrode layer 13 attached to the bottom of the transparent cover layer 11 by a viscous bonding layer 12. The bonding layer 12 comprises an insulating material such as a transparent photosensitive material, a polymer material or an optically-clear adhesive (OCA). However, if the first sensing electrode layer 13 itself contains a viscose material, the optical adhesive layer 12 can be omitted. In this embodiment, the first sensing electrode layer 13 includes a plurality of first electrodes 131 connected in series to a plurality of parallel first electrode columns, as illustrated in FIG.
本實施例的第一感應電極層13係由非透明導電材料所形成的透光(light-transmissive)結構。在一實施例中，第一感應電極層13內含複數奈米金屬線(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(亦即數奈米至數百奈米之間)，可藉由塑膠材料(例如樹脂)以固定於第一 感應電極層13內。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/網所構成之第一感應電極層13的透光性極佳。在另一實施例中，第一感應電極層13還可包含光敏(photosensitive)材料(例如壓克力)，藉由曝光顯影製程即可形成所要的電極形狀(pattern)。 The first sensing electrode layer 13 of this embodiment is a light-transmissive structure formed of a non-transparent conductive material. In one embodiment, the first sensing electrode layer 13 contains a plurality of metal nanowires, such as nano silver wires or nano copper wires; or a plurality of metal nanonets, such as nano silver. Net or nano copper mesh. The inner diameter of the nanowire or metal mesh is in the nanometer grade (ie, between several nanometers and hundreds of nanometers), and can be fixed to the first by a plastic material (for example, a resin). Inside the sensing electrode layer 13. Since the nanowire/wire is very thin and can be observed by a non-human eye, the first sensing electrode layer 13 composed of a nanowire/wire has excellent light transmittance. In another embodiment, the first sensing electrode layer 13 may further comprise a photosensitive material (for example, acryl), and a desired electrode pattern can be formed by an exposure and development process.
根據本實施例的特徵之一，觸控面板100還包含複數第一虛擬(dummy)電極141，分別形成於第一感應電極層13的該些第一電極131之間。如第一A圖及第一B圖所示，該些第一虛擬電極141與該些第一電極131位於同一層級，且該些第一虛擬電極141與該些第一電極131彼此電性絕緣。本實施例之第一虛擬電極141的材質可為絕緣或導電材質，例如光敏材料或高分子材料，但不限定於此。在本實施例中，第一虛擬電極141與相鄰第一電極131之間的距離d1小於或等於40微米。藉此，當使用者由上俯視觸控面板100時，可大量減少視覺上的痕跡(trace)現象(或稱光學可視性)。 According to one of the features of the embodiment, the touch panel 100 further includes a plurality of first dummy electrodes 141 respectively formed between the first electrodes 131 of the first sensing electrode layer 13 . The first dummy electrode 141 and the first electrodes 131 are located at the same level, and the first dummy electrodes 141 and the first electrodes 131 are electrically insulated from each other, as shown in FIG. 1A and FIG. . The material of the first dummy electrode 141 of this embodiment may be an insulating or conductive material, such as a photosensitive material or a polymer material, but is not limited thereto. In the embodiment, the distance d1 between the first dummy electrode 141 and the adjacent first electrode 131 is less than or equal to 40 micrometers. Thereby, when the user looks down from the touch panel 100, the visual trace phenomenon (or optical visibility) can be greatly reduced.
根據一實施例，第一虛擬電極141可形成有圖案(pattern)，如第二圖所示觸控面板100的局部放大上視圖。如圖所示，每一第一虛擬電極141經圖案化以形成複數長形條(strip)1411。在一較佳實施例中，長形條1411的寬度d2小於或等於90微米，或者介於10微米與90微米之間，較佳大約為50微米。藉此，可減少電容耦合效應，因而提升觸控面板100的驅動能力。此外，本實施例相鄰長形條1411之間的距離d3小於或等於40微米，或者介於10微米與40微米之間，較佳大約為30微米。藉此，可進一步減少視覺上的痕跡現象。 According to an embodiment, the first dummy electrode 141 may be formed with a pattern, such as a partially enlarged top view of the touch panel 100 shown in the second figure. As shown, each of the first dummy electrodes 141 is patterned to form a plurality of elongated strips 1411. In a preferred embodiment, the width d2 of the elongated strip 1411 is less than or equal to 90 microns, or between 10 microns and 90 microns, preferably about 50 microns. Thereby, the capacitive coupling effect can be reduced, thereby improving the driving capability of the touch panel 100. Moreover, the distance d3 between adjacent elongated strips 1411 of the present embodiment is less than or equal to 40 microns, or between 10 microns and 40 microns, preferably about 30 microns. Thereby, the visual trace phenomenon can be further reduced.
繼續參閱第一A/B圖，觸控面板100還包含第二感應電極層16，其與第一感應電極層13之間形成有透明基板15。本實施例之第二感應電極層16的結構類似於前述第一感應電極層13。亦即，第二感應電極層16包含複數第二電極161，如第一B圖所示，該些第二電極161串接為複數平行的第二電極列。其 中，該些第一電極131與該些第二電極161的位置呈上下錯開排列。此外，該些第二電極161之間形成有複數第二虛擬電極171。如第一B圖所示，該些第二虛擬電極171與該些第二電極161位於同一層級，且該些第二虛擬電極171與該些第二電極161彼此電性絕緣。本實施例的第二虛擬電極171的材質可類似於第一虛擬電極131。此外，第二虛擬電極171可形成有圖案(pattern)，其細節類似於第一虛擬電極131，不再贅述。 Continuing to refer to the first A/B diagram, the touch panel 100 further includes a second sensing electrode layer 16 formed with a transparent substrate 15 between the first sensing electrode layer 13. The structure of the second sensing electrode layer 16 of this embodiment is similar to that of the first sensing electrode layer 13 described above. That is, the second sensing electrode layer 16 includes a plurality of second electrodes 161. As shown in the first B diagram, the second electrodes 161 are connected in series to a plurality of parallel second electrode columns. its The positions of the first electrodes 131 and the second electrodes 161 are vertically shifted. In addition, a plurality of second dummy electrodes 171 are formed between the second electrodes 161. As shown in FIG. 24B, the second dummy electrodes 171 are located at the same level as the second electrodes 161, and the second dummy electrodes 171 and the second electrodes 161 are electrically insulated from each other. The material of the second dummy electrode 171 of this embodiment may be similar to the first dummy electrode 131. In addition, the second dummy electrode 171 may be formed with a pattern whose details are similar to those of the first dummy electrode 131 and will not be described again.
前述透明基板15的材質為絕緣材料，例如玻璃、光敏材料或聚對苯二甲酸乙二酯(PET)，但不限定於此。為了減少第一感應電極層13與第二感應電極層16之間所產生的基礎電容值(base capacitance)以增加整體的有效觸控電容值，用以提升觸控敏感度，透明基板15必須具有相當的厚度，例如大於50微米。然而，透明基板15的厚度愈大則所伴隨的視覺痕跡現象(或光學可視性)也愈大。根據本實施例所使用的第一虛擬電極131及第二虛擬電極171，可大量減少視覺痕跡現象。雖然第一B圖所示實施例中，第一感應電極層13包含有第一虛擬電極131且第二感應電極層16包含有第二虛擬電極171，然而在其他實施例中，也可省略其中一種虛擬電極131/171。例如，僅第一感應電極層13包含有第一虛擬電極131。 The material of the transparent substrate 15 is an insulating material such as glass, a photosensitive material or polyethylene terephthalate (PET), but is not limited thereto. In order to reduce the base capacitance of the first sensing electrode layer 13 and the second sensing electrode layer 16 to increase the overall effective touch capacitance value, in order to improve the touch sensitivity, the transparent substrate 15 must have A considerable thickness, for example greater than 50 microns. However, the larger the thickness of the transparent substrate 15, the greater the accompanying visual trace phenomenon (or optical visibility). According to the first dummy electrode 131 and the second dummy electrode 171 used in the embodiment, the visual trace phenomenon can be largely reduced. In the embodiment shown in FIG. B, the first sensing electrode layer 13 includes the first dummy electrode 131 and the second sensing electrode layer 16 includes the second dummy electrode 171. However, in other embodiments, the first sensing electrode layer 16 may be omitted. A dummy electrode 131/171. For example, only the first sensing electrode layer 13 includes the first dummy electrode 131.
如第一B圖所示觸控面板100，若透明覆蓋層11使用的材質為玻璃，則所形成結構可稱為單片玻璃式(one glass solution,OGS)觸控面板。第二感應電極層16的底部可選擇性形成另一玻璃層(未顯示)，因而形成雙片玻璃式觸控面板。 As shown in FIG. 1B, if the material used for the transparent cover layer 11 is glass, the formed structure may be referred to as a one-glass solution (OGS) touch panel. The bottom of the second sensing electrode layer 16 can selectively form another glass layer (not shown), thereby forming a two-piece glass touch panel.
第三圖顯示本創作第二實施例之觸控面板200的剖面視圖。本實施例類似於第一實施例(第一B圖)，不同的地方在於本實施例的第二感應電極 層16使用透明導電材料，例如氧化銦錫(ITO)或氧化銦鋅(IZO)。在本實施例中，第二感應電極層16之該些第二電極161之間不需要形成虛擬電極，而不會有視覺痕跡現象。 The third figure shows a cross-sectional view of the touch panel 200 of the second embodiment of the present invention. This embodiment is similar to the first embodiment (first B diagram), and the difference lies in the second sensing electrode of the embodiment. Layer 16 uses a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO). In this embodiment, it is not necessary to form a dummy electrode between the second electrodes 161 of the second sensing electrode layer 16 without visual trace phenomenon.
第四圖顯示本創作第三實施例之觸控面板300的剖面視圖。本實施例類似於第一實施例(第一B圖)，不同的地方在於本實施例的第一感應電極層13使用透明導電材料，例如氧化銦錫(ITO)或氧化銦鋅(IZO)。在本實施例中，第一感應電極層13之該些第一電極131之間不需要形成虛擬電極，而不會有視覺痕跡現象。 The fourth figure shows a cross-sectional view of the touch panel 300 of the third embodiment of the present creation. This embodiment is similar to the first embodiment (FIG. B), except that the first sensing electrode layer 13 of the present embodiment uses a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO). In this embodiment, it is not necessary to form a dummy electrode between the first electrodes 131 of the first sensing electrode layer 13 without visual trace phenomenon.
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 100‧‧‧ touch panel
11‧‧‧透明覆蓋層 11‧‧‧Transparent overlay
12‧‧‧貼合層 12‧‧‧Fitting layer
13‧‧‧第一感應電極層 13‧‧‧First sensing electrode layer
131‧‧‧第一電極 131‧‧‧First electrode
141‧‧‧第一虛擬電極 141‧‧‧First virtual electrode
15‧‧‧透明基板 15‧‧‧Transparent substrate
16‧‧‧第二感應電極層 16‧‧‧Second sensing electrode layer
161‧‧‧第二電極 161‧‧‧second electrode
171‧‧‧第二虛擬電極 171‧‧‧Second virtual electrode
d1‧‧‧距離 D1‧‧‧ distance
Claims (13)
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| TW101223273U TWM459449U (en) | 2012-11-30 | 2012-11-30 | Touch panel |
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| Publication Number | Publication Date |
|---|---|
| TWM459449U true TWM459449U (en) | 2013-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW101223273U TWM459449U (en) | 2012-11-30 | 2012-11-30 | Touch panel |
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| Country | Link |
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| TW (1) | TWM459449U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106997448A (en) * | 2016-01-22 | 2017-08-01 | 晨星半导体股份有限公司 | Identification of fingerprint electrode structure |
| TWI615755B (en) * | 2014-06-23 | 2018-02-21 | Ｌｇ顯示器股份有限公司 | Touch panel and driving apparatus thereof |
| US10387705B2 (en) | 2016-01-06 | 2019-08-20 | Ili Technology Corp. | Fingerprint identification electrode structure |
-
2012
- 2012-11-30 TW TW101223273U patent/TWM459449U/en not_active IP Right Cessation
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI615755B (en) * | 2014-06-23 | 2018-02-21 | Ｌｇ顯示器股份有限公司 | Touch panel and driving apparatus thereof |
| US10564742B2 (en) | 2014-06-23 | 2020-02-18 | Lg Display Co., Ltd. | Touch panel and apparatus for driving thereof |
| US11327615B2 (en) | 2014-06-23 | 2022-05-10 | Lg Display Co., Ltd. | Touch panel and apparatus for driving thereof |
| US10387705B2 (en) | 2016-01-06 | 2019-08-20 | Ili Technology Corp. | Fingerprint identification electrode structure |
| CN106997448A (en) * | 2016-01-22 | 2017-08-01 | 晨星半导体股份有限公司 | Identification of fingerprint electrode structure |
| CN106997448B (en) * | 2016-01-22 | 2020-05-12 | 奕力科技股份有限公司 | Fingerprint identification electrode structure |
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| MM4K | Annulment or lapse of a utility model due to non-payment of fees |