TWI676927B - Touch sensor - Google Patents
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- TWI676927B TWI676927B TW104102000A TW104102000A TWI676927B TW I676927 B TWI676927 B TW I676927B TW 104102000 A TW104102000 A TW 104102000A TW 104102000 A TW104102000 A TW 104102000A TW I676927 B TWI676927 B TW I676927B
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
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Abstract
本發明提供一種觸控感測器，其中構成感測單元之導電圖案及用於連接該等導電圖案之橋接器交替地形成於Tx/Rx通道區域中，藉此改良由於通道電阻所致之一信號延遲。 The present invention provides a touch sensor, in which conductive patterns constituting a sensing unit and a bridge for connecting the conductive patterns are alternately formed in a Tx / Rx channel region, thereby improving one of the characteristics due to channel resistance. Signal delay.
Description
本發明係關於一種大面積高速觸控感測器，且更特定而言係關於一種其中構成感測單元之導電圖案及用於連接該等導電圖案之橋接器交替地形成於Tx/Rx通道區域中，藉此改良由於通道電阻所致之一信號延遲之觸控感測器。 The present invention relates to a large-area high-speed touch sensor, and more particularly, to a conductive pattern in which a sensing unit is formed and a bridge for connecting the conductive patterns are alternately formed in a Tx / Rx channel region. In this way, a touch sensor with a signal delay due to channel resistance is improved.
最近，觸控感測器廣泛應用於諸如行動電話、個人數位助理(PDA)及手持式個人電腦之各種電子產品，電容式觸控感測器之製造技術最廣泛應用於該等電子產品。 Recently, touch sensors are widely used in various electronic products such as mobile phones, personal digital assistants (PDAs), and handheld personal computers. The manufacturing technology of capacitive touch sensors is most widely used in these electronic products.
當前，一單玻璃類型電容式觸控感測器之一結構主要用於觸控感測器。 Currently, a structure of a single-glass type capacitive touch sensor is mainly used for the touch sensor.
對於根據一先前技術之單玻璃類型電容式觸控感測器，用於形成一觸控感測電極層之一材料通常係氧化銦錫(ITO)。一ITO層係藉由濺鍍直接形成於一玻璃基板上，且接著圖案化，藉此形成觸控感測電極層之一圖案。 For a single-glass type capacitive touch sensor according to a prior art, a material used to form a touch sensing electrode layer is usually indium tin oxide (ITO). An ITO layer is directly formed on a glass substrate by sputtering, and then patterned, thereby forming a pattern of a touch sensing electrode layer.
觸控感測電極層之圖案包含一X軸感測電極圖案及一Y軸感測電極圖案。在此等圖案中，使用一導電層以便感測電極圖案之一個軸跨越感測電極圖案之另一軸形成一橋接器結構。 The pattern of the touch sensing electrode layer includes an X-axis sensing electrode pattern and a Y-axis sensing electrode pattern. In these patterns, a conductive layer is used so that one axis of the sensing electrode pattern crosses the other axis of the sensing electrode pattern to form a bridge structure.
一絕緣層形成於其中X軸感測電極圖案與Y軸感測電極圖案彼此交叉之一位置處以使X軸感測電極圖案與Y軸感測電極圖案電絕緣。 An insulating layer is formed at a position where the X-axis sensing electrode pattern and the Y-axis sensing electrode pattern cross each other to electrically insulate the X-axis sensing electrode pattern from the Y-axis sensing electrode pattern.
在先前技術之單玻璃類型電容式觸控感測器中，用於形成橋接器結構之導電層之材料通常係金屬，且用於使X軸感測電極圖案與Y軸感測電極圖案電絕緣之絕緣層之材料通常係二氧化矽。 In the prior art single-glass type capacitive touch sensor, the material used to form the conductive layer of the bridge structure is usually metal, and is used to electrically insulate the X-axis sensing electrode pattern from the Y-axis sensing electrode pattern. The material of the insulating layer is usually silicon dioxide.
以此方式，一基於ITO之導電膜廣泛用作感測電極圖案，但此ITO具有一問題，在於當將該ITO施加至一大面積觸控面板時，辨識速度由於一自RC延遲而減小。 In this way, an ITO-based conductive film is widely used as a sensing electrode pattern, but this ITO has a problem in that when the ITO is applied to a large area touch panel, the recognition speed is reduced due to a self-RC delay. .
在先前技術之觸控感測器之結構中，如圖1中所展示，X軸感測圖案11及Y軸感測圖案12形成於相同平面上，且X軸感測圖案11係使用透明導電橋接器13而連接的。 In the structure of the prior art touch sensor, as shown in FIG. 1, the X-axis sensing pattern 11 and the Y-axis sensing pattern 12 are formed on the same plane, and the X-axis sensing pattern 11 is made of transparent conductive material. The bridge 13 is connected.
此處，Y軸感測圖案12不由透明導電橋接器連接，但以在形成感測圖案時連接該等感測圖案之此一方式進行圖案化。X軸感測圖案11經圖案化以彼此分離且接著在一後續程序中由透明導電橋接器13連接[參見韓國專利申請公開案第10-2012-0092004號及第10-2013-0116583號]。 Here, the Y-axis sensing pattern 12 is not connected by a transparent conductive bridge, but is patterned in such a manner that the sensing patterns are connected when the sensing pattern is formed. The X-axis sensing patterns 11 are patterned to be separated from each other and then connected by a transparent conductive bridge 13 in a subsequent procedure [see Korean Patent Application Publication Nos. 10-2012-0092004 and 10-2013-0116583].
然而，若感測圖案及透明導電橋接器之電阻並不足夠低，則具有此一結構之觸控感測器具有不良敏感性且難以實施一大面積觸控感測器。 However, if the resistance of the sensing pattern and the transparent conductive bridge is not low enough, a touch sensor with such a structure has poor sensitivity and it is difficult to implement a large area touch sensor.
特定而言，Y軸感測圖案不由透明導電橋接器連接，但在形成感測圖案時經圖案化以彼此連接，且X軸感測圖案經圖案化以彼此分離且由透明導電橋接器連接。因此，X軸與Y軸之間存在一電阻差。 In particular, the Y-axis sensing patterns are not connected by the transparent conductive bridge, but are patterned to be connected to each other when the sensing pattern is formed, and the X-axis sensing patterns are patterned to be separated from each other and connected by the transparent conductive bridge. Therefore, there is a resistance difference between the X-axis and the Y-axis.
電阻差使觸控回應速度劣化，此使得難以實施一高速觸控感測器。 The difference in resistance deteriorates the touch response speed, which makes it difficult to implement a high-speed touch sensor.
相應地，設想本發明來解決前述問題。本發明之一目標係提供一種觸控感測器，其中構成感測單元之導電圖案及用於連接該等導電 圖案之橋接器交替地形成於Tx/Rx通道區域中，藉此改良由於通道電阻所致之一信號延遲。 Accordingly, the present invention is conceived to solve the aforementioned problems. An object of the present invention is to provide a touch sensor, wherein a conductive pattern constituting a sensing unit is used to connect the conductive patterns. The patterned bridges are alternately formed in the Tx / Rx channel region, thereby improving a signal delay due to the channel resistance.
本發明之另一目標係提供一種觸控感測器，其中為了交替地引入用於連接電極圖案之橋接器，導電圖案經配置以彼此相交，該等導電圖案具有以下一結構：在該結構中，屬於構成任一感測區域之一單元之任一電極圖案與屬於構成另一毗鄰感測區域之一單元之另一電極圖案彼此連接。 Another object of the present invention is to provide a touch sensor, in order to alternately introduce a bridge for connecting electrode patterns, the conductive patterns are configured to intersect with each other, and the conductive patterns have one of the following structures: Any electrode pattern belonging to a unit constituting any one of the sensing regions and another electrode pattern belonging to a unit constituting another adjacent sensing region are connected to each other.
本發明之又一目標係提供一種具有一輔助電極線之觸控感測器，該輔助電極線形成於構成一導電圖案的屬於任一單位感測單元之任一電極圖案及屬於另一毗鄰單位感測單元之另一電極圖案上，以延伸至該等電極圖案之各別邊緣部分。 Still another object of the present invention is to provide a touch sensor having an auxiliary electrode line formed on any electrode pattern belonging to any unit sensing unit constituting a conductive pattern and belonging to another adjacent unit The other electrode patterns of the sensing unit are extended to respective edge portions of the electrode patterns.
本發明之目標並不限於前述目標，且熟習此項技術者將根據以下說明理解其未提及之其他目標。 The objects of the present invention are not limited to the foregoing objects, and those skilled in the art will understand other objects not mentioned in the following description.
根據本發明之一態樣，提供一種觸控感測器，該觸控感測器包含：一基板；第一導電圖案，其等各自具有構成任一感測單元之一第一電極圖案及連接至該第一電極圖案且構成另一毗鄰感測單元之一第二電極圖案；及第二導電圖案，其等各自具有構成任一感測單元之一第三電極圖案及連接至該第三電極圖案且構成另一毗鄰感測單元之一第四電極圖案，其中該等第一及第二導電圖案重複配置於該基板上以使得在其長度方向上之中心軸彼此垂直相交。 According to one aspect of the present invention, a touch sensor is provided. The touch sensor includes: a substrate; a first conductive pattern, each of which has a first electrode pattern and a connection constituting any one of the sensing units; To the first electrode pattern and forming a second electrode pattern adjacent to another sensing unit; and second conductive patterns each having a third electrode pattern constituting one of any of the sensing units and connected to the third electrode Pattern and constitute a fourth electrode pattern of another adjacent sensing unit, wherein the first and second conductive patterns are repeatedly disposed on the substrate so that the central axes in the length direction thereof intersect each other perpendicularly.
此處，該觸控感測器可進一步包含：第一導電圖案橋接器，其中之每一者將未彼此電連接之任一第一導電圖案與另一毗鄰第一導電圖案電連接；及第二導電圖案橋接器，其中之每一者將未彼此電連接之任一第二導電圖案與另一毗鄰第二導電圖案電連接。 Here, the touch sensor may further include: a first conductive pattern bridge, each of which electrically connects any first conductive pattern that is not electrically connected to each other and another adjacent first conductive pattern; and Two conductive pattern bridges, each of which electrically connects any second conductive pattern that is not electrically connected to each other and another adjacent second conductive pattern.
此外，較佳地，該等第一及第二導電圖案橋接器交替地形成於 其中該等第一及第二導電圖案在其長度方向上之該等中心軸彼此垂直相交之區域中。 In addition, preferably, the first and second conductive pattern bridges are alternately formed on The first and second conductive patterns are in a region where the central axes of the first and second conductive patterns intersect each other perpendicularly.
根據本發明之另一態樣，提供一種觸控感測器，該觸控感測器包含：一基板；一第一輔助電極線，其用於電連接形成於該基板上之第一導電圖案中之任兩個毗鄰第一導電圖案；及一第二輔助電極線，其用於電連接形成於該基板上之第二導電圖案中之任兩個毗鄰第二導電圖案，其中該等第一及第二輔助電極線交替地穿過其中該等第一及第二導電圖案在其長度方向上之該等中心軸彼此垂直相交之區域。 According to another aspect of the present invention, a touch sensor is provided. The touch sensor includes: a substrate; and a first auxiliary electrode line for electrically connecting a first conductive pattern formed on the substrate. Any two of them are adjacent to the first conductive pattern; and a second auxiliary electrode line for electrically connecting any two of the second conductive patterns formed on the substrate adjacent to the second conductive pattern, wherein the first And the second auxiliary electrode line alternately pass through a region in which the central axes of the first and second conductive patterns in the length direction thereof intersect each other perpendicularly.
一種根據本發明之觸控感測器具有如下效應。 A touch sensor according to the present invention has the following effects.
首先，導電圖案及用於連接導電圖案之橋接器交替地形成於Tx/Rx通道區域中，藉此改良由於通道電阻所致之一信號延遲。 First, conductive patterns and bridges for connecting the conductive patterns are alternately formed in the Tx / Rx channel region, thereby improving a signal delay due to channel resistance.
其次，該等橋接器交替地形成於該等Tx/Rx通道區域中，以使得X與Y軸之間的一電阻差可經移除以增強觸控回應速度。因此，可能實施一高速觸控感測器。 Secondly, the bridges are alternately formed in the Tx / Rx channel regions, so that a resistance difference between the X and Y axes can be removed to enhance the touch response speed. Therefore, it is possible to implement a high-speed touch sensor.
第三，具有其中構成任一感測單元之任一電極圖案與構成另一毗鄰感測單元之另一電極圖案彼此連接之一結構之導電圖案經配置以彼此相交，藉此確保設計之可用性及處理。 Third, a conductive pattern having a structure in which any electrode pattern constituting any one sensing unit and another electrode pattern constituting another adjacent sensing unit are connected to each other is configured to intersect with each other, thereby ensuring the usability of the design and deal with.
第四，一輔助電極線形成於一電極圖案上，以使得整個區域中之電阻可減小以實施一大面積觸控感測器。 Fourth, an auxiliary electrode line is formed on an electrode pattern, so that the resistance in the entire area can be reduced to implement a large-area touch sensor.
11‧‧‧X軸感測圖案 11‧‧‧X-axis sensing pattern
12‧‧‧Y軸感測圖案 12‧‧‧Y-axis sensing pattern
13‧‧‧透明導電橋接器 13‧‧‧Transparent conductive bridge
20‧‧‧第一電極圖案 20‧‧‧First electrode pattern
21‧‧‧第二電極圖案 21‧‧‧Second electrode pattern
22‧‧‧第三電極圖案 22‧‧‧Third electrode pattern
23‧‧‧第四電極圖案 23‧‧‧ fourth electrode pattern
30‧‧‧第一導電圖案 30‧‧‧The first conductive pattern
31‧‧‧第二導電圖案 31‧‧‧Second conductive pattern
40‧‧‧基板 40‧‧‧ substrate
41‧‧‧第一導電圖案 41‧‧‧first conductive pattern
42‧‧‧毗鄰第一導電圖案/第一導電圖案 42‧‧‧ Adjacent to the first conductive pattern / first conductive pattern
43‧‧‧第二導電圖案 43‧‧‧Second conductive pattern
44‧‧‧毗鄰第二導電圖案/第二導電圖案 44‧‧‧ Adjacent to the second conductive pattern / second conductive pattern
45‧‧‧第一導電圖案橋接器 45‧‧‧The first conductive pattern bridge
46‧‧‧第二導電圖案橋接器 46‧‧‧Second conductive pattern bridge
47‧‧‧絕緣層 47‧‧‧ Insulation
48‧‧‧部件 48‧‧‧ parts
49‧‧‧部件 49‧‧‧ parts
50‧‧‧基板 50‧‧‧ substrate
51‧‧‧第一導電圖案 51‧‧‧The first conductive pattern
52‧‧‧毗鄰第一導電圖案 52‧‧‧ Adjacent to the first conductive pattern
53‧‧‧第二導電圖案 53‧‧‧Second conductive pattern
54‧‧‧毗鄰第二導電圖案 54‧‧‧ Adjacent to the second conductive pattern
55‧‧‧第一輔助電極線 55‧‧‧first auxiliary electrode line
56‧‧‧第二輔助電極線 56‧‧‧Second auxiliary electrode line
57‧‧‧絕緣層 57‧‧‧ Insulation
58‧‧‧部件 58‧‧‧ parts
59‧‧‧部件 59‧‧‧ Parts
200‧‧‧導電圖案 200‧‧‧ conductive pattern
A‧‧‧區域 A‧‧‧Area
B‧‧‧區域 B‧‧‧ area
X1‧‧‧電極圖案 X1‧‧‧ electrode pattern
X2‧‧‧電極圖案 X2‧‧‧ electrode pattern
Y1‧‧‧電極圖案 Y1‧‧‧ electrode pattern
Y2‧‧‧電極圖案 Y2‧‧‧ electrode pattern
圖1係展示一先前技術之一觸控感測器之一組態之一視圖。 FIG. 1 is a view showing a configuration of a touch sensor of a prior art.
圖2a及圖2b係展示根據本發明之一觸控感測器之導電圖案之一基本組態之視圖。 2a and 2b are views showing a basic configuration of a conductive pattern of a touch sensor according to the present invention.
圖3係展示其中根據本發明導電圖案經配置以彼此相交之一組態之一視圖。 FIG. 3 is a view showing a configuration in which the conductive patterns according to the present invention are configured to intersect with each other.
圖4a及圖4b係展示其中根據本發明之一實施例橋接器交替地配置於一觸控感測器中之一組態之視圖。 4a and 4b are views showing a configuration in which bridges are alternately disposed in a touch sensor according to an embodiment of the present invention.
圖5a及圖5b係展示根據本發明之另一實施例之具有輔助電極線之一觸控感測器之一組態之視圖。 5a and 5b are views showing a configuration of a touch sensor having auxiliary electrode lines according to another embodiment of the present invention.
下文中，根據本發明之一觸控感測器之較佳實施例將如下闡述。 Hereinafter, a preferred embodiment of a touch sensor according to the present invention will be described as follows.
透過以下實施例之詳細說明，根據本發明之觸控感測器之特徵及優點將顯而易見。 Through the detailed description of the following embodiments, the features and advantages of the touch sensor according to the present invention will be apparent.
圖2a及圖2b係展示根據本發明之一觸控感測器之導電圖案之一基本組態之視圖。 2a and 2b are views showing a basic configuration of a conductive pattern of a touch sensor according to the present invention.
本發明經提供以解決由觸控感測器之一RC延遲所導致之一回應速度之劣化。一電容器之充電/放電時間由一RC電路中之電阻及電容來判定。 The present invention is provided to solve a degradation of a response speed caused by an RC delay of a touch sensor. The charging / discharging time of a capacitor is determined by the resistance and capacitance in an RC circuit.
充電：V(t)=V0(1-e-t/RC)，放電：V(t)=V0e-t/RC Charging: V (t) = V 0 (1-e -t / RC ), Discharging: V (t) = V 0 e -t / RC
因此，由於t=R*C=τ[sec]，因此若RC值較小，則可減少將電容器充電/放電所需要之時間。 Therefore, since t = R * C = τ [sec], if the RC value is small, the time required to charge / discharge the capacitor can be reduced.
本發明經提供以降低構成觸控感測器之一電路之電阻R，藉此最小化RC延遲。交替地引入用於連接電極圖案之橋接器。 The present invention is provided to reduce the resistance R of a circuit constituting a touch sensor, thereby minimizing the RC delay. Bridges for connecting electrode patterns are alternately introduced.
在本發明中，為了交替地引入用於連接電極圖案之橋接器，具有以下一結構之導電圖案經配置以彼此相交：在該結構中屬於構成任一感測區域之一單元之任一電極圖案及屬於構成另一毗鄰感測區域之一單元之另一電極圖案彼此連接。 In the present invention, in order to alternately introduce bridges for connecting electrode patterns, conductive patterns having a structure configured to intersect each other: any electrode pattern belonging to a unit constituting any one of the sensing regions in the structure And another electrode pattern belonging to a unit constituting another adjacent sensing region is connected to each other.
為此，根據本發明之導電圖案之基本結構如圖2a及圖2b中所展示。 To this end, the basic structure of the conductive pattern according to the present invention is shown in Figs. 2a and 2b.
圖2a展示經配置以使得在其長度方向上之中心軸沿著X軸之一導 電圖案之基本結構。一導電圖案200具有：一第一電極圖案20，其定位於任一第一感測單元區域中且具有一特定區；及一第二電極圖案21，其定位於另一毗鄰第二感測單元區域中且具有一特定區。第一電極圖案20及第二電極圖案21藉由區域A中之一連接圖案而連接，第一電極圖案20及第二電極圖案21不具有任何橋接器而沿X軸整體地彼此連接。 Figure 2a shows a configuration such that the central axis in its length direction is guided along one of the X axes The basic structure of electrical patterns. A conductive pattern 200 has: a first electrode pattern 20 positioned in any one of the first sensing unit regions with a specific area; and a second electrode pattern 21 positioned in another adjacent to the second sensing unit The area has a specific area. The first electrode pattern 20 and the second electrode pattern 21 are connected by one of the connection patterns in the area A. The first electrode pattern 20 and the second electrode pattern 21 are integrally connected to each other along the X axis without any bridge.
圖2b展示經配置以使得在其長度方向上之中心軸沿著Y軸之一導電圖案之基本結構。一導電圖案200具有：一第三電極圖案22，其定位於任一第一感測單元區域中且具有一特定區；及一第四電極圖案23，其定位於另一毗鄰第二感測單元區域中且具有一特定區。第三電極圖案22及第四電極圖案23藉由區域B中之一連接圖案而連接，第三電極圖案22及第四電極圖案23不具有任何橋接器而沿Y軸整體地彼此連接。 Figure 2b shows the basic structure of a conductive pattern configured such that the central axis in its length direction is along the Y axis. A conductive pattern 200 has: a third electrode pattern 22 positioned in any one of the first sensing unit regions with a specific area; and a fourth electrode pattern 23 positioned in another adjacent to the second sensing unit The area has a specific area. The third electrode pattern 22 and the fourth electrode pattern 23 are connected by one of the connection patterns in the area B. The third electrode pattern 22 and the fourth electrode pattern 23 are integrally connected to each other along the Y axis without any bridge.
此處，根據本發明之導電圖案之基本結構之已圖解說明呈一菱形形狀，但未必具有菱形形狀。將明瞭，導電圖案之基本結構可經組態呈另一形狀，只要該等導電圖案具有其中屬於構成任一感測區域之一單元之任一電極圖案連接至屬於構成另一毗鄰感測區域之一單元之另一電極圖案之一結構即可。 Here, the basic structure of the conductive pattern according to the present invention has been illustrated in a rhombus shape, but does not necessarily have a rhombus shape. It will be clear that the basic structure of the conductive pattern may be configured into another shape, as long as the conductive patterns have any electrode pattern in which one of the cells constituting one of the sensing regions is connected to one of the cells constituting another adjacent sensing region. One structure of another electrode pattern of one unit is sufficient.
在根據本發明之第一導電圖案之基本結構中，第一電極圖案、第二電極圖案以及連接第一及第二電極圖案之連接圖案係透過相同圖案化程序而形成於相同平面上。 In the basic structure of the first conductive pattern according to the present invention, the first electrode pattern, the second electrode pattern, and the connection pattern connecting the first and second electrode patterns are formed on the same plane through the same patterning procedure.
類似地，在第二導電圖案之基本結構中，第三電極圖案、第四電極圖案及連接第三及第四電極圖案之連接圖案係透過相同圖案化程序而形成於相同平面上。 Similarly, in the basic structure of the second conductive pattern, the third electrode pattern, the fourth electrode pattern, and the connection pattern connecting the third and fourth electrode patterns are formed on the same plane through the same patterning procedure.
其中根據本發明之具有前述結構之導電圖案經配置以使得在其長度方向上之中心軸沿X及Y方向彼此垂直相交之組態如下。 The configuration in which the conductive pattern having the aforementioned structure according to the present invention is configured so that the central axes in the length direction thereof intersect each other perpendicularly in the X and Y directions is as follows.
圖3係展示其中根據本發明導電圖案經配置以彼此相交之一組態之一視圖。 FIG. 3 is a view showing a configuration in which the conductive patterns according to the present invention are configured to intersect with each other.
圖3展示以下一結構：在該結構中圖2a中所圖解說明之結構之導電圖案經配置以使得在其長度方向上之中心軸沿著X軸成一列，且圖 2b中所圖解說明之結構之導電圖案經配置以使得在其長度方向上之中心軸沿著Y軸成一列。 FIG. 3 shows a structure in which the conductive pattern of the structure illustrated in FIG. 2a is configured such that the central axis in its length direction is aligned in a row along the X axis, and FIG. The conductive pattern of the structure illustrated in 2b is configured such that the central axis in its length direction is aligned along the Y axis.
亦即，組型式(set-typed)之第一導電圖案30(在其中之每一者中屬於構成任一感測區域之一單元之一第一電極圖案與屬於構成另一毗鄰感測區域之一單元之一第二電極圖案彼此連接)經配置以使得在其長度方向上之中心軸沿著X軸成一列，且組型式(set-typed)之第二導電圖案31(在其中之每一者中屬於構成任一感測區域之一單元之一第三電極圖案與屬於構成另一毗鄰感測區域之一單元之一第四電極圖案彼此連接)經配置以使得在其長度方向上之中心軸沿著Y軸成一列。總體上，第一導電圖案30及第二導電圖案31經重複配置以使得在其長度方向上之其中心軸彼此垂直相交。換言之，第二導電圖案31之在其長度方向上之中心軸在第一導電圖案30之中心處垂直相交於第一導電圖案30之在其長度方向上之中心軸。 That is, a set-typed first conductive pattern 30 (in each of which belongs to one of the first electrode patterns constituting one of the units constituting any one of the sensing regions and the first electrode pattern belonging to another unit constituting another adjacent sensing region One cell and one second electrode pattern are connected to each other) are configured so that the central axis in the length direction thereof is aligned in a row along the X axis, and the set-typed second conductive patterns 31 (in each of them The third electrode pattern belonging to one of the cells constituting any one of the sensing regions and the fourth electrode pattern belonging to one of the cells constituting another adjacent sensing region are connected to each other) configured such that the center in the length direction thereof The axes are lined up along the Y axis. In general, the first conductive pattern 30 and the second conductive pattern 31 are repeatedly configured so that their central axes intersect each other perpendicularly in the length direction. In other words, the central axis of the second conductive pattern 31 in its length direction perpendicularly intersects the central axis of the first conductive pattern 30 in the length direction at the center of the first conductive pattern 30.
此處，未彼此電連接之任兩個毗鄰第一導電圖案30由一橋接器電連接，且未彼此電連接之任兩個毗鄰第二導電圖案31不由一橋接器電連接，此將詳細地闡述如下。 Here, any two adjacent first conductive patterns 30 that are not electrically connected to each other are electrically connected by a bridge, and any two adjacent second conductive patterns 31 that are not electrically connected to each other are not electrically connected by a bridge, which will be described in detail. Explained below.
圖4a及圖4b係展示其中根據本發明之一實施例橋接器交替地配置於一觸控感測器中之一組態之視圖。 4a and 4b are views showing a configuration in which bridges are alternately disposed in a touch sensor according to an embodiment of the present invention.
根據本發明之實施例之觸控感測器包含：第一導電圖案橋接器45，其中之每一者將未彼此電連接且沿著X軸安置之任一第一導電圖案41與另一毗鄰第一導電圖案42電連接；及第二導電圖案橋接器46，其中之每一者將未彼此電連接且沿著Y軸安置之任一第二導電圖案43與另一毗鄰第二導電圖案44電連接。 The touch sensor according to an embodiment of the present invention includes: a first conductive pattern bridge 45, each of which is adjacent to the other one of the first conductive patterns 41 which is not electrically connected to each other and is disposed along the X axis; The first conductive pattern 42 is electrically connected; and the second conductive pattern bridges 46, each of which connects any one of the second conductive patterns 43 that is not electrically connected to each other and is disposed along the Y axis, and another adjacent second conductive pattern 44 Electrical connection.
此處，第一導電圖案橋接器45及第二導電圖案橋接器46交替地形成於其中第一導電圖案41及42在其長度方向上之中心軸及第二導電圖案43及44在其長度方向上之中心軸彼此垂直相交之區域中。 Here, the first conductive pattern bridges 45 and the second conductive pattern bridges 46 are alternately formed on the central axis of the first conductive patterns 41 and 42 in the length direction thereof and the second conductive patterns 43 and 44 in the length direction thereof. The upper central axes intersect each other perpendicularly.
如圖4b中所展示，形成於一基板40上之第一導電圖案橋接器45形成於一部件48上方，在部件48處，屬於構成任一感測區域之一單元之一電極圖案Y1與屬於構成另一毗鄰感測區域之一單元之另一電極 圖案Y2彼此連接，其中一絕緣層47插置於第一導電圖案橋接器45與部件48之間。 As shown in FIG. 4b, the first conductive pattern bridge 45 formed on a substrate 40 is formed above a component 48. At the component 48, an electrode pattern Y1 belonging to one of the cells constituting any one of the sensing regions and Another electrode constituting a unit adjacent to another sensing area The patterns Y2 are connected to each other, and an insulating layer 47 is interposed between the first conductive pattern bridge 45 and the component 48.
第二導電圖案橋接器46形成於一部件49上方，在該部件49處，屬於構成任一感測區域之一單元之一電極圖案X1與屬於構成另一毗鄰感測區域之一單元之另一電極圖案X2彼此連接，其中一絕緣層47插置於第二導電圖案橋接器46與部件49之間。 The second conductive pattern bridge 46 is formed above a component 49, where the electrode pattern X1 belonging to one of the cells constituting any one of the sensing regions and the other electrode belonging to one of the cells constituting another adjacent sensing region are formed. The electrode patterns X2 are connected to each other, and an insulating layer 47 is interposed between the second conductive pattern bridge 46 and the component 49.
根據本發明之具有前述結構之觸控感測器將最小化由於構成觸控感測器之電極之高通道電阻所致之信號延遲(RC延遲)。為此，交替地形成導電圖案橋接器以便減小Tx/Rx通道之間的一電阻差。 The touch sensor having the aforementioned structure according to the present invention will minimize the signal delay (RC delay) due to the high channel resistance of the electrodes constituting the touch sensor. To this end, conductive pattern bridges are alternately formed so as to reduce a resistance difference between Tx / Rx channels.
可根據根據本發明之導電圖案及導電圖案橋接器將應用之領域適當地選擇在製造根據本發明之觸控感測器中所使用之基板。基板之實例可包含一玻璃或無機材料基板、一塑膠基板或膜或者其他撓性基板等，但並不限於此。 The substrate used in manufacturing the touch sensor according to the present invention may be appropriately selected according to the conductive pattern and the field in which the conductive pattern bridge is to be applied according to the present invention. Examples of the substrate may include, but are not limited to, a glass or inorganic material substrate, a plastic substrate or film, or other flexible substrates.
導電圖案(透明電極)可使用諸如ITO、Ag NW及PEDOT之一透明導電材料而形成，且用作形成觸控感測器之電容之一主電極。 The conductive pattern (transparent electrode) can be formed using a transparent conductive material such as ITO, Ag NW, and PEDOT, and is used as a main electrode for forming a capacitor of a touch sensor.
另外，導電圖案較佳地形成為一平面內圖案，其中Tx/Rx導電圖案形成於相同平面上。導電圖案係藉由透過PR塗佈之後的一曝光程序之圖案形成而製造。 In addition, the conductive pattern is preferably formed as an in-plane pattern, wherein the Tx / Rx conductive pattern is formed on the same plane. The conductive pattern is manufactured by pattern formation through an exposure process after PR coating.
此外，絕緣層用以允許導電圖案與導電圖案橋接器彼此電絕緣。在塗佈一有機絕緣層之後透過一曝光程序形成絕緣層。 In addition, the insulating layer is used to allow the conductive pattern and the conductive pattern bridge to be electrically insulated from each other. After applying an organic insulating layer, an insulating layer is formed through an exposure process.
較佳地使用一透明熱固型樹脂來形成絕緣層。較佳地以僅形成於導電圖案橋接器下方之一特定部件處之一島狀圖案形成絕緣層。 Preferably, a transparent thermosetting resin is used to form the insulating layer. The insulating layer is preferably formed in an island-like pattern formed only at a specific part under the conductive pattern bridge.
導電圖案橋接器用以將未彼此電連接之毗鄰兩個導電圖案電連接，且較佳地由具有低電阻率之一金屬(例如，鉬、銀、鋁、銅、鈀、金、鉑、鋅、錫、鈦或其合金)製成以改良導電性。 The conductive pattern bridge is used to electrically connect two adjacent conductive patterns that are not electrically connected to each other, and is preferably made of a metal having a low resistivity (for example, molybdenum, silver, aluminum, copper, palladium, gold, platinum, zinc, Tin, titanium or alloys) to improve conductivity.
在根據本發明之觸控感測器中，由於構成一電極之導電圖案受 外部環境影響(濕氣、空氣或諸如此類)，因此較佳地可進一步形成一鈍化膜以便抑制外部環境之影響。 In the touch sensor according to the present invention, since the conductive pattern constituting an electrode is affected by External environmental influences (moisture, air, or the like), so it is preferable to further form a passivation film in order to suppress external environmental influences.
為了將所製造觸控感測器面板接合至一顯示面板，可將諸如一光學透明樹脂(OCR)之一聚合物材料施加於觸控感測器面板且藉由光固化及熱固化將該觸控感測器面板接合至該顯示面板。 In order to bond the manufactured touch sensor panel to a display panel, a polymer material such as an optically transparent resin (OCR) may be applied to the touch sensor panel and the touch panel may be cured by light and heat. A control sensor panel is bonded to the display panel.
作為另一方法，可使用諸如一光學透明黏合劑(OCA)之一聚合物材料以便將一覆蓋窗或顯示面板接合至觸控感測器面板。 As another method, a polymer material such as an optically clear adhesive (OCA) may be used to bond a cover window or a display panel to a touch sensor panel.
OCA係呈一膜之形式且係一種壓力敏感黏合劑。OCA可用於整個表面或僅一邊緣之黏合。 OCA is in the form of a film and is a pressure-sensitive adhesive. OCA can be used for bonding the entire surface or only one edge.
根據本發明，其中交替地引入用於連接電極圖案之橋接器之結構可應用至其中堆疊一透明電極、一有機絕緣層及一橋接器之結構及其中堆疊一橋接器、一有機絕緣層及一透明電極之結構兩者。 According to the present invention, a structure in which bridges for connecting electrode patterns are alternately introduced can be applied to a structure in which a transparent electrode, an organic insulating layer, and a bridge are stacked, and a bridge, an organic insulating layer, and Structure of both transparent electrodes.
在本發明之另一實施例中，金屬輔助電極經施加以彼此相交，藉此減小Tx/Rx導電圖案之整體電阻。 In another embodiment of the present invention, the metal auxiliary electrodes are applied to intersect each other, thereby reducing the overall resistance of the Tx / Rx conductive pattern.
圖5a及圖5b係展示根據本發明之另一實施例之具有輔助電極線之一觸控感測器之一組態之視圖。 5a and 5b are views showing a configuration of a touch sensor having auxiliary electrode lines according to another embodiment of the present invention.
如圖5a及圖5b中所展示，觸控感測器經形成具有一輔助電極線，該輔助電極線形成於構成一導電圖案的屬於任一單位感測單元之任一電極圖案及屬於另一毗鄰單位感測單元之另一電極圖案上，以延伸至該等電極圖案之各別邊緣部分，藉此減小整個區域之電阻。 As shown in FIG. 5a and FIG. 5b, the touch sensor is formed to have an auxiliary electrode line formed on any one of the electrode patterns belonging to any unit sensing unit constituting a conductive pattern and belonging to another Another electrode pattern adjacent to the unit sensing unit is extended to each edge portion of the electrode patterns, thereby reducing the resistance of the entire area.
此處，形成於X軸導電圖案上之一第一輔助電極線及形成於Y軸導電圖案上之一第二輔助電極線經形成以交替地穿過其中該等第一及第二導電圖案在其長度方向上之中心軸彼此垂直相交之區域中。 Here, a first auxiliary electrode line formed on the X-axis conductive pattern and a second auxiliary electrode line formed on the Y-axis conductive pattern are formed to alternately pass through the first and second conductive patterns. In the area where the central axes in the longitudinal direction intersect each other perpendicularly.
根據本發明之另一實施例之一觸控感測器包含：一第一輔助電極線55，其將未彼此電連接且沿著X軸安置之一第一導電圖案51與另一毗鄰第一導電圖案52電連接；及一第二輔助電極線56，其將未彼此 電連接且沿著Y軸安置之一第二導電圖案53與另一毗鄰第二導電圖案54電連接。 According to another embodiment of the present invention, the touch sensor includes: a first auxiliary electrode line 55 that connects one of the first conductive patterns 51 that are not electrically connected to each other and is disposed along the X axis and the other adjacent first The conductive patterns 52 are electrically connected; and a second auxiliary electrode line 56 which will not be connected to each other. One of the second conductive patterns 53 electrically connected and disposed along the Y axis is electrically connected to the other adjacent second conductive pattern 54.
如圖5b中所展示，形成於一基板50上之第一輔助電極線55形成於一部件58上方，在該部件58處屬於構成任一感測區域之一單元之一電極圖案Y1與屬於構成另一毗鄰感測區域之一單元之另一電極圖案Y2彼此連接，其中一絕緣層57插置於第一輔助電極線55與部件58之間。 As shown in FIG. 5b, a first auxiliary electrode line 55 formed on a substrate 50 is formed above a component 58 where the electrode pattern Y1 belonging to one of the cells constituting any one of the sensing regions and the component Another electrode pattern Y2 adjacent to a unit of another sensing region is connected to each other, and an insulating layer 57 is interposed between the first auxiliary electrode line 55 and the component 58.
第二輔助電極線56形成於一部件59上方，在該部件59處屬於構成任一感測區域之一單元之一電極圖案X1與屬於構成另一毗鄰感測區域之一單元之另一電極圖案X2彼此連接，其中絕緣層57插置於第二輔助電極線56與部件59之間。 The second auxiliary electrode line 56 is formed above a component 59 where the electrode pattern X1 belonging to one of the cells constituting any one of the sensing regions and the other electrode pattern belonging to a cell constituting another adjacent sensing region is formed. X2 is connected to each other, wherein an insulating layer 57 is interposed between the second auxiliary electrode line 56 and the component 59.
類似地，根據本發明之另一實施例之具有輔助電極線之觸控感測器具有與圖2a及圖2b中所展示之基本結構相同的導電圖案之基本結構。 Similarly, a touch sensor with auxiliary electrode lines according to another embodiment of the present invention has a basic structure of a conductive pattern that is the same as the basic structure shown in FIGS. 2a and 2b.
在經配置以使得在其長度方向上之中心軸沿著X軸之一導電圖案之基本結構中，一第一導電圖案具有定位於任一第一感測單元區域中且具有一特定區之一第一電極圖案20及定位於另一毗鄰第二感測單元區域中且具有一特定區之一第二電極圖案21。第一電極圖案20及第二電極圖案21由區域A中之一連接圖案連接。 In a basic structure configured such that a central axis in its length direction is along one of the conductive patterns of the X axis, a first conductive pattern has a position in any one of the first sensing unit regions and has a specific region. The first electrode pattern 20 and a second electrode pattern 21 located in another region adjacent to the second sensing unit and having a specific region. The first electrode pattern 20 and the second electrode pattern 21 are connected by one of the connection patterns in the region A.
在經配置以使得在其長度方向上之中心軸沿著Y軸之一導電圖案之基本結構中，一第二導電圖案具有定位於任一第一感測單元區域中且具有一特定區之一第三電極圖案22及定位於另一毗鄰第二感測單元區域中且具有一特定區之一第四電極圖案23。第三電極圖案22及第四電極圖案23由區域B中之一連接圖案連接。 In a basic structure configured such that a central axis in a length direction thereof is along one of the conductive patterns of the Y axis, a second conductive pattern has a position positioned in any of the first sensing unit regions and has one of a specific region The third electrode pattern 22 and a fourth electrode pattern 23 located in another region adjacent to the second sensing unit and having a specific region. The third electrode pattern 22 and the fourth electrode pattern 23 are connected by one of the connection patterns in the region B.
該等第一及第二導電圖案經重複配置以使得在其長度方向上之其中心軸彼此垂直相交。第一及第二輔助電極線較佳地形成於構成一 導電圖案的屬於任一單位感測單元之任一電極圖案及屬於另一毗鄰單位感測單元之另一電極圖案上，以延伸至該等電極圖案之各別邊緣部分。 The first and second conductive patterns are repeatedly configured such that their central axes intersect each other perpendicularly in their length direction. The first and second auxiliary electrode lines are preferably formed in a Any one of the electrode patterns of the conductive pattern that belongs to any unit sensing unit and another electrode pattern that belongs to another adjacent unit sensing unit extends to the respective edge portions of the electrode patterns.
根據本發明之觸控感測器如下製造，且其線路電阻模擬結果展示於以下表1中。 The touch sensor according to the present invention is manufactured as follows, and the simulation results of its line resistance are shown in Table 1 below.
在以下說明中，術語「ITO電極間距」意指如圖1中所展示以其週期性地重複構成電極圖案的相同形狀之ITO圖案之一距離，且術語「ITO寬度」意指將構成一導電圖案之一電極圖案及另一電極圖案連接之部件之一寬度。 In the following description, the term "ITO electrode pitch" means a distance of an ITO pattern of the same shape that periodically repeats to form an electrode pattern as shown in Fig. 1, and the term "ITO width" means that a conductive One of the widths of the electrode pattern of one of the patterns and the part to which the other electrode pattern is connected.
為了執行線路電阻模擬，藉由在一個表面上形成X/Y主電極且將金屬橋接器施加至透明電極(ITO)而製造2×2單位之觸控感測器。 To perform a line resistance simulation, a 2 × 2 unit touch sensor is manufactured by forming an X / Y main electrode on one surface and applying a metal bridge to a transparent electrode (ITO).
所製造觸控感測器之ITO表面電阻為150[Ω/□]，沿X軸及Y軸方向兩者之ITO電極間距為4mm，Cu(為一橋接器形成材料)之厚度為2000Å，且金屬橋接器之寬度為8μm。 The ITO surface resistance of the manufactured touch sensor is 150 [Ω / □], the distance between the ITO electrodes along the X-axis and Y-axis directions is 4 mm, and the thickness of Cu (which is a bridge forming material) is 2000 Å, and The width of the metal bridge is 8 μm.
為了執行線路電阻模擬，在比較實例(參考)以及實例1及實例2中之每一者中製造具有將構成一導電圖案之一電極圖案及另一電極圖案連接的兩個不同ITO寬度之部件之觸控感測器。 In order to perform a line resistance simulation, a component having two different ITO widths connecting one electrode pattern constituting a conductive pattern and the other electrode pattern was manufactured in a comparative example (reference) and each of examples 1 and 2. Touch sensor.
此係出於確認當構成Y電極之ITO在X/Y相交部分處之寬度減小時X/Y電阻之間的一差增加之一問題之發生之目的以便減小金屬橋接器之長度以改良可視性。 This is to confirm the occurrence of a problem in which a difference between X / Y resistance increases when the width of the ITO constituting the Y electrode at the X / Y intersection portion decreases in order to reduce the length of the metal bridge to improve visibility Sex.
首先，在藉由僅沿一個方向施加金屬橋接器而製造之習用觸控感測器之比較實例(參考)中，構成Y電極之ITO之寬度在案例1中設定至50μm且在案例2中設定至25μm。 First, in a comparative example (reference) of a conventional touch sensor manufactured by applying a metal bridge in only one direction, the width of the ITO constituting the Y electrode was set to 50 μm in case 1 and set in case 2 Up to 25 μm.
線路電阻模擬之結果展示，在比較實例(參考)之案例1中X及Y電極之線路電阻分別為1552Ω及2022Ω，且在比較實例(參考)之案例2中X及Y電極之線路電阻分別為1638Ω及2375Ω。 The results of the line resistance simulation show that the line resistances of the X and Y electrodes in case 1 of the comparative example (reference) are 1552Ω and 2022Ω, and the line resistances of the X and Y electrodes in case 2 of the comparative example (reference) are 1638Ω and 2375Ω.
在其中交替地引入用於連接電極圖案之橋接器之實例1中，構成Y電極之ITO之寬度在案例1中設定至50μm且在案例2中設定至25。 In Example 1 in which bridges for connecting electrode patterns are alternately introduced, the width of the ITO constituting the Y electrode is set to 50 μm in Case 1 and to 25 in Case 2.
線路電阻模擬之結果展示，實例1之案例1中之X及Y電極之線路電阻分別為1788Ω及1787Ω，且實例1之案例2中之X及Y電極之線路電阻分別為2006Ω及2005Ω。 The results of the line resistance simulation show that the line resistances of the X and Y electrodes in Case 1 of Example 1 are 1788Ω and 1787Ω, and the line resistances of the X and Y electrodes in Case 2 of Example 1 are 2006Ω and 2005Ω, respectively.
類似地，在其中金屬輔助電極經施加以彼此相交以降低Tx/Rx導電圖案之整體電阻之實例2中，構成Y電極之ITO之寬度在案例1中設定至50μm且在案例2中設定至25μm。 Similarly, in Example 2 where the metal auxiliary electrodes are applied to intersect each other to reduce the overall resistance of the Tx / Rx conductive pattern, the width of the ITO constituting the Y electrode is set to 50 μm in Case 1 and 25 μm in Case 2 .
線路電阻模擬之結果展示，實例2之案例1中之X及Y電極之線路電阻分別為303Ω及304Ω，且實例之案例2中之X及Y電極之線路電阻分別為446Ω及446Ω。 The results of the line resistance simulation show that the line resistances of the X and Y electrodes in Case 1 of Example 2 are 303Ω and 304Ω, and the line resistances of the X and Y electrodes in Case 2 of the example are 446Ω and 446Ω, respectively.
如表1中所展示，可確認隨著構成Y電極之ITO在X/Y相交部分處之寬度增加，X/Y電極之間的電阻差增加。此外，可確認當交替地引入用於連接電極圖案之橋接器時，可將X/Y電極之電阻設定至相同位準。 As shown in Table 1, it can be confirmed that as the width of the ITO constituting the Y electrode at the X / Y intersection portion increases, the resistance difference between the X / Y electrodes increases. In addition, it was confirmed that when the bridges for connecting the electrode patterns were alternately introduced, the resistance of the X / Y electrodes could be set to the same level.
此外，可見金屬輔助電極經施加以彼此相交，藉此降低Tx/Rx導電圖案之整體電阻。因此，可能製造一大面積/高速回應觸控感測器。 In addition, it can be seen that the metal auxiliary electrodes are applied to intersect each other, thereby reducing the overall resistance of the Tx / Rx conductive pattern. Therefore, it is possible to manufacture a large area / high-speed response touch sensor.
在根據本發明之觸控感測器中，構成感測單元之導電圖案及用於連接該等導電圖案之橋接器交替地形成於Tx/Rx通道區域中，藉此改良由於通道電阻所致之一信號延遲。 In the touch sensor according to the present invention, the conductive patterns constituting the sensing unit and the bridges for connecting the conductive patterns are alternately formed in the Tx / Rx channel region, thereby improving the effects caused by the channel resistance. A signal is delayed.
如上文所闡述，將理解，可在不背離本發明之基本特徵之情況下以經修改形式實施本發明。 As set forth above, it will be understood that the present invention may be implemented in a modified form without departing from the essential characteristics of the invention.
相應地，前述實施例應視為並非限制本發明之技術精神，而出於說明性目的而提供。本發明之範疇不應受限於前述實施例而由隨附申請專利範圍界定。與本發明之範疇實質上相同之範疇內之技術精神將考量為屬於隨附申請專利範圍所界定的本發明之範疇內。 Accordingly, the foregoing embodiments should be considered not to limit the technical spirit of the present invention, but are provided for illustrative purposes. The scope of the present invention should not be limited to the foregoing embodiments and is defined by the scope of the accompanying patent applications. The technical spirit within the scope substantially the same as the scope of the present invention will be considered as falling within the scope of the present invention as defined by the scope of the accompanying patent application.
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