TWI502435B - Touch control display system and routing layout of a touch panel thereof - Google Patents
Touch control display system and routing layout of a touch panel thereof Download PDFInfo
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Description
本發明是有關於一種觸控螢幕，且特別是有關於一種單層結構(One-Layer)之觸控螢幕。The present invention relates to a touch screen, and more particularly to a touch screen of a single layer structure (One-Layer).
觸控螢幕為輸入裝置的一種，使用者可以對影像顯示裝置的觸控螢幕上所顯示的物件進行選擇，藉此來輸入指令。使用者可以手指或是其他物件，觸碰觸控螢幕面板，來對一主控裝置下指令。The touch screen is a type of input device, and the user can select an object displayed on the touch screen of the image display device to input an instruction. The user can touch a touch screen panel with a finger or other object to command a master device.
為達上述目的，通常會在影像顯示裝置的前端提供觸控螢幕面板，來將使用者以手指或是其他物件所觸碰的位置轉換為一電子信號，被觸碰選擇的物件所發出的信號就會被視為輸入資訊。如此一來，觸控螢幕面板就可以取代傳統的輸入裝置，例如鍵盤、滑鼠，或是類似的電腦週邊裝置，且此觸控螢幕面板可被整合到影像顯示裝置當中，使其應用層面更為寬廣。In order to achieve the above purpose, a touch screen panel is usually provided at the front end of the image display device to convert the position touched by the user with a finger or other object into an electronic signal, and the signal emitted by the selected object is touched. It will be treated as input information. In this way, the touch screen panel can replace the traditional input device, such as a keyboard, mouse, or similar computer peripheral device, and the touch screen panel can be integrated into the image display device to make the application layer more It is broad.
已為人所熟知的實體觸控螢幕面板上的觸控感測裝置可被區分為三種類型，就是：電阻型、光敏型，以及 靜電電容類型，特定類型的觸控螢幕面板通常含有導電感測電極，來感測電容值的變化，據此可將觸控位置轉換為電子信號。The touch sensing devices on the physical touch screen panels that are well known can be distinguished into three types, namely: resistive type, photosensitive type, and For electrostatic capacitance types, a particular type of touch screen panel typically contains conductive sensing electrodes to sense changes in capacitance values, which can be used to convert touch locations into electrical signals.
為了清楚地判斷影像顯示裝置的觸控螢幕上被觸碰的位置，通常會將感測電極沿著不同方向區分為多個相異的群組，這些感測電極通常會被設置在同一層的結構當中。用戶觸摸所引起的信號從角落傳輸到控制器，被解碼並翻譯成坐標。在典型的圖案化(Patterned)電容式觸控螢幕當中，感測電極可能包括一個或一系列的平行導電電極，由控制器所發出的激發信號自導電電極的兩端進行觸發。然後，這些信號被解碼並轉換為座標。In order to clearly determine the touched position on the touch screen of the image display device, the sensing electrodes are generally divided into a plurality of different groups in different directions, and the sensing electrodes are usually disposed on the same layer. Among the structures. Signals caused by user touch are transmitted from the corner to the controller, decoded and translated into coordinates. In a typical patterned capacitive touch screen, the sensing electrodes may include one or a series of parallel conductive electrodes, and an excitation signal from the controller is triggered from both ends of the conductive electrodes. These signals are then decoded and converted to coordinates.
然而，在傳統的觸控面板設計當中，每一個觸控電極都需要連接到連接襯墊(Bonding Pad)，造成連接襯墊的數目過多，線路過於複雜，使觸控面板與電路軟板接合時良率下降，影響觸控感應的品質。However, in the conventional touch panel design, each touch electrode needs to be connected to a bonding pad, which causes the number of connection pads to be too large, and the circuit is too complicated, so that the touch panel is bonded to the circuit board. The yield is reduced, which affects the quality of touch sensing.
因此，本發明之一方面提供一種線路佈局結構，應用於一觸控面板上，此線路佈局結構能夠降低連接襯墊(Bonding Pad)的數目，提高製程良率，降低電路板上的線路複雜度。Therefore, an aspect of the present invention provides a circuit layout structure applied to a touch panel, which can reduce the number of bonding pads, improve process yield, and reduce circuit complexity on a circuit board. .
依照本發明之一實施例，線路佈局結構內含複數個連接襯墊(Bonding Pad)、複數個第一觸控電極、複數條第一連接線，以及複數條第二連接線。連接襯墊(Bonding Pad) 沿著第一方向排列；第一觸控電極沿著第一方向以及一第二方向，以二維陣列形式進行排列，這些觸控電極之間存在間隔；各條第一連接線電性連接在第二方向上位置相同之第一觸控電極；第二連接線將第一觸控電極之一部分連接至連接襯墊。According to an embodiment of the invention, the circuit layout structure includes a plurality of bonding pads, a plurality of first touch electrodes, a plurality of first connecting lines, and a plurality of second connecting lines. Connecting pad (Bonding Pad) Arranging along the first direction; the first touch electrodes are arranged in a two-dimensional array along the first direction and the second direction, and there is a gap between the touch electrodes; each of the first connecting lines is electrically connected a first touch electrode having the same position in the second direction; the second connection line connecting one of the first touch electrodes to the connection pad.
本發明之另一方面提供一種觸控顯示系統，能夠減少連接襯墊(Bonding Pad)的數目，提高製程良率，降低電路板上的線路複雜度。Another aspect of the present invention provides a touch display system capable of reducing the number of bonding pads, improving process yield, and reducing circuit complexity on a circuit board.
依照本發明之另一實施例，觸控顯示系統含有一第一基板、複數個連接襯墊(Bonding Pad)、複數個第一觸控電極、複數條第一連接線，以及複數條第二連接線。第一基板含一觸控區域以及一襯墊區域，連接襯墊設置於襯墊區域上，這些連接襯墊沿著第一方向排列；第一觸控電極設置於觸控區域上，這些第一觸控電極沿著第一方向以及一第二方向，以二維陣列形式進行排列，第一觸控電極之間存在間隔；各條第一連接線電性連接在第二方向上位置相同之第一觸控電極；第二連接線將這些觸控電極之一部分連接至連接襯墊。According to another embodiment of the present invention, a touch display system includes a first substrate, a plurality of bonding pads, a plurality of first touch electrodes, a plurality of first connecting lines, and a plurality of second connections line. The first substrate includes a touch area and a pad area, and the connection pads are disposed on the pad area, the connection pads are arranged along the first direction; the first touch electrodes are disposed on the touch area, the first The touch electrodes are arranged in a two-dimensional array along the first direction and the second direction, and there is a gap between the first touch electrodes; each of the first connection lines is electrically connected to the same position in the second direction. a touch electrode; the second connection line connects one of the touch electrodes to the connection pad.
以上實施例的觸控顯示系統及其線路佈局結構，將第二方向上位置相同的觸控電極先分組連接，然後再將各組連接到一個連接襯墊，不需要將每個觸控電極都連接至連接襯墊，因此能夠降低連接襯墊的數目，提高製程良率，降低電路板上的線路複雜度。In the touch display system and the circuit layout structure of the above embodiment, the touch electrodes having the same position in the second direction are first grouped and connected, and then the groups are connected to one connection pad, and each touch electrode is not required to be Connected to the connection pads, which reduces the number of connection pads, improves process yield, and reduces line complexity on the board.
100‧‧‧觸控顯示系統100‧‧‧Touch display system
101‧‧‧印刷電路板區域101‧‧‧Printed circuit board area
103‧‧‧晶片103‧‧‧ wafer
105‧‧‧連接區域105‧‧‧Connected area
107‧‧‧第一基板107‧‧‧First substrate
107a‧‧‧觸控區域107a‧‧‧ touch area
107b‧‧‧襯墊區域107b‧‧‧pad area
108‧‧‧可撓性基板區域108‧‧‧Flexible substrate area
109‧‧‧第一觸控電極109‧‧‧First touch electrode
111‧‧‧連接線111‧‧‧Connecting line
201、201a‧‧‧第一觸控電極201, 201a‧‧‧ first touch electrode
203‧‧‧連接襯墊203‧‧‧Connecting pad
205‧‧‧第一連接線205‧‧‧First cable
207‧‧‧第二連接線207‧‧‧second cable
209‧‧‧第三連接線209‧‧‧ third connection line
211‧‧‧襯墊區域211‧‧‧Cushion area
213‧‧‧第二觸控電極213‧‧‧Second touch electrode
215‧‧‧連接襯墊215‧‧‧Connecting pad
第1圖係繪示本發明一實施例觸控顯示系統之平面示意圖。1 is a schematic plan view showing a touch display system according to an embodiment of the present invention.
第2圖係繪示本發明另一實施例線路佈局結構之平面示意圖。2 is a schematic plan view showing a line layout structure according to another embodiment of the present invention.
以下實施例的觸控顯示系統及其線路佈局結構，先將第二方向上位置相同的觸控電極分組連接，然後一組觸控電極僅需連接一個連接襯墊，因此能夠降低連接襯墊的數目，提高製程良率，降低電路板上的線路複雜度。The touch display system and the circuit layout structure of the following embodiments first connect the touch electrodes with the same position in the second direction, and then only one connection pad needs to be connected to one set of touch electrodes, thereby reducing the connection pad. The number increases the process yield and reduces the complexity of the circuit on the board.
第1圖係繪示本發明一實施例觸控顯示系統之平面示意圖。觸控顯示系統100主要含有第一基板107、可撓性基板區域108、連接區域105，以及印刷電路板區域101。1 is a schematic plan view showing a touch display system according to an embodiment of the present invention. The touch display system 100 mainly includes a first substrate 107, a flexible substrate region 108, a connection region 105, and a printed circuit board region 101.
第一基板107劃分為觸控區域107a以及襯墊區域107b，以分別設置第一觸控電極109與連接襯墊，連接線111於觸控區域107a上將第一觸控電極109相互連接；第二方向上位置相同之第一觸控電極109會在可撓性基板區域108或是印刷電路板區域101電性連接在一起，使第二方向上位置相同之第一觸控電極109在電性上成為一體。The first substrate 107 is divided into a touch area 107a and a pad area 107b to respectively provide a first touch electrode 109 and a connection pad, and the connection line 111 connects the first touch electrodes 109 to each other on the touch area 107a; The first touch electrodes 109 having the same position in the two directions are electrically connected together in the flexible substrate region 108 or the printed circuit board region 101, so that the first touch electrodes 109 having the same position in the second direction are electrically connected. Become one.
印刷電路板區域101上設置了晶片103，晶片103與印刷電路板區域101透過直接封裝晶片技術(Chip On Board；COB)進行接合固定。連接區域105連接印刷電路板區域101以及可撓性基板區域108，其中可撓性基板區域 108與連接區域105透過晶粒軟膜接合(Chip On Film；COF)技術進行接合固定。A wafer 103 is disposed on the printed circuit board area 101, and the wafer 103 and the printed circuit board area 101 are bonded and fixed by a Chip On Board (COB). The connection region 105 connects the printed circuit board region 101 and the flexible substrate region 108, wherein the flexible substrate region 108 and the connection region 105 are bonded and fixed by a chip on-film (COF) technique.
第2圖係繪示本發明一實施例線路佈局結構之平面示意圖。線路佈局結構主要應用於觸控面板上，此線路佈局結構含有連接襯墊(Bonding Pad)203、第一觸控電極201、第一連接線205，以及第二連接線207。2 is a schematic plan view showing a line layout structure according to an embodiment of the present invention. The circuit layout structure is mainly applied to a touch panel. The circuit layout structure includes a bonding pad 203, a first touch electrode 201, a first connecting line 205, and a second connecting line 207.
連接襯墊203沿著第一方向X排列，並設置於襯墊區域211上，這些連接襯墊203主要由金屬所製成，例如金(Au)、銅(Cu)，或是鋁(Al)。這些連接襯墊203會藉由第三連接線209連接印刷電路板上的晶片。The connection pads 203 are arranged along the first direction X and are disposed on the pad region 211. The connection pads 203 are mainly made of metal, such as gold (Au), copper (Cu), or aluminum (Al). . These connection pads 203 are connected to the wafer on the printed circuit board by a third connection line 209.
第一觸控電極201，例如接收(Receiver)觸控電極，其材質主要為銦錫氧化物(Indium Tin Oxide；ITO)，會沿著第一方向X以及與第一方向X正交之第二方向Y，以二維陣列形式進行排列，這些第一觸控電極201彼此之間存在間隔。第一觸控電極201主要用來感測使用者觸碰觸控面板的位置，並將觸碰位置轉換為電子信號。The first touch electrode 201, for example, a Receiver touch electrode, is mainly made of Indium Tin Oxide (ITO), and is along the first direction X and the second orthogonal to the first direction X. The directions Y are arranged in a two-dimensional array, and the first touch electrodes 201 are spaced apart from each other. The first touch electrode 201 is mainly used to sense the position where the user touches the touch panel and convert the touch position into an electronic signal.
各條第一連接線205連接在第二方向Y上位置相同之第一觸控電極201；此一實施例主要將第一觸控電極201兩兩相連。舉例來說，兩個在第二方向Y上位置或座標相同的第一觸控電極201a，會透過第一連接線205電性連接在一起。由於在進行位置判斷時，觸控系統會以一併考量第一方向X以及第二方向Y上所收到的信號，以兩個方向的交叉點來判斷面板被觸碰的位置，因此，在第二方向Y上位置或是座標相同的第一觸控電極201，例如兩個第一觸 控電極201a，可被視為相同電極，因此可以藉由第一連接線205相連在一起，原本存在的連接襯墊215就可以被省略而不再需要，因此可以減少連接襯墊的總數。Each of the first touch electrodes 205 is connected to the first touch electrodes 201 having the same position in the second direction Y. In this embodiment, the first touch electrodes 201 are mainly connected to each other. For example, the two first touch electrodes 201a having the same position or coordinates in the second direction Y are electrically connected together through the first connecting line 205. Since the touch system considers the signals received in the first direction X and the second direction Y together when determining the position, the intersection of the two directions is used to determine the position at which the panel is touched. a first touch electrode 201 having the same position in the second direction Y or the same coordinates, for example, two first touches The control electrodes 201a can be regarded as the same electrodes, and thus can be connected together by the first connection lines 205, and the originally existing connection pads 215 can be omitted and are no longer needed, so that the total number of connection pads can be reduced.
在第一連接線205將第一觸控電極201分群組連接在一起以後，第二連接線207會將一部分的第一觸控電極201。所有的第一觸控電極201會在可撓性基板區域或是印刷電路板區域電性連接在一起。第一連接線205以及第二連接線207之材質為銦錫氧化物。After the first touch electrodes 201 are connected in groups by the first connection line 205, the second connection lines 207 will be a part of the first touch electrodes 201. All of the first touch electrodes 201 are electrically connected together in a flexible substrate area or a printed circuit board area. The material of the first connection line 205 and the second connection line 207 is indium tin oxide.
除了上述元件以外，多個第二觸控電極213，也就是傳輸型(Transmission)觸控電極，會沿著第一方向X相互平行地排列，這些第二觸控電極213與前述第一觸控電極201上下重疊地排列，材質同樣也是銦錫氧化物。在此單層(One-layer)結構的觸控面板當中，傳輸型的觸控電極與接收型的觸控電極會設置在同一層電路上，以節省空間。In addition to the above components, the plurality of second touch electrodes 213, that is, the transmission touch electrodes, are arranged in parallel with each other along the first direction X. The second touch electrodes 213 and the first touch The electrodes 201 are arranged one above the other, and the material is also indium tin oxide. In the one-layer touch panel, the transmission type touch electrodes and the receiving type touch electrodes are disposed on the same layer circuit to save space.
以上實施例的觸控顯示系統及其線路佈局結構，先將第二方向上位置相同的觸控電極分組連接，各組觸控電極僅需連接一個連接襯墊，不需要將每個觸控電極都連接到連接襯墊，因此能夠降低連接襯墊的數目，提高製程良率，降低電路板上的線路複雜度；最後在可撓性基板或是印刷電路板上將同一行或是同一列上的觸控電極全部相連，以實現電性功能。In the touch display system and the circuit layout structure of the above embodiment, the touch electrodes having the same position in the second direction are first connected in groups, and only one connection pad needs to be connected to each group of touch electrodes, and each touch electrode is not required. Both are connected to the connection pads, thus reducing the number of connection pads, increasing process yield, and reducing circuit complexity on the board; and finally placing the same row or column on a flexible substrate or printed circuit board The touch electrodes are all connected to achieve electrical functions.
201、201a‧‧‧第一觸控電極201, 201a‧‧‧ first touch electrode
203‧‧‧連接襯墊203‧‧‧Connecting pad
205‧‧‧第一連接線205‧‧‧First cable
207‧‧‧第二連接線207‧‧‧second cable
209‧‧‧第三連接線209‧‧‧ third connection line
211‧‧‧襯墊區域211‧‧‧Cushion area
213‧‧‧第二觸控電極213‧‧‧Second touch electrode
215‧‧‧連接襯墊215‧‧‧Connecting pad
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| CN103197789A (en) * | 2012-01-05 | 2013-07-10 | 宏达国际电子股份有限公司 | Touch panel |
| CN103076934A (en) * | 2013-01-11 | 2013-05-01 | 福建华映显示科技有限公司 | Touch panel |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201506727A (en) | 2015-02-16 |
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