TWI497356B - Touch panel with uniformed electrode pattern - Google Patents
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- TWI497356B TWI497356B TW098105412A TW98105412A TWI497356B TW I497356 B TWI497356 B TW I497356B TW 098105412 A TW098105412 A TW 098105412A TW 98105412 A TW98105412 A TW 98105412A TW I497356 B TWI497356 B TW I497356B
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Description
本發明係關於一種觸控面板,特別是關於一種具有均化電極圖案之觸控面板。 The present invention relates to a touch panel, and more particularly to a touch panel having a homogenized electrode pattern.
目前,市面上的主流觸控面板,有電阻式與電容式兩種。其中,電阻式又分為早期的四線電阻式與五線電阻式、六線或八線電阻式,電容式又區分為表面電容式(Surface Capacitance Touch Screen,SCT)與投射電容式(Projective Capacitance Touch Screen,PCT)。其中,投射電容式觸控面板,又可稱為數位式觸控技術,而電阻式及表面電容式觸控面板可概稱為類比式觸控技術。 At present, the mainstream touch panels on the market are both resistive and capacitive. Among them, the resistance type is divided into the early four-wire resistive and five-wire resistive, six-wire or eight-wire resistive, and the capacitive type is divided into Surface Capacitance Touch Screen (SCT) and Projective Capacitance. Touch Screen, PCT). Among them, the projected capacitive touch panel can also be called digital touch technology, and the resistive and surface capacitive touch panels can be collectively referred to as analog touch technology.
傳統的類比式觸控技術,透過邊緣四周的電阻性元件的圖案配置,來設法建立均勻的等位電場。在觸控技術的不斷發展以及相關應用產品的要求不斷提高的情形下,目前的技術多朝如何能讓邊緣四周的電阻元件所佔空間縮小,並且,更要求達到更平緩的邊緣等電位場,讓觸控面板的準確度提高,可用範圍更大。 Traditional analog touch technology seeks to establish a uniform equipotential electric field through the pattern configuration of resistive elements around the edges. With the continuous development of touch technology and the increasing requirements of related application products, how can the current technology reduce the space occupied by the resistive elements around the edge and require a more gentle edge equipotential field. The accuracy of the touch panel is increased and the available range is larger.
請參考美國專利公開號第6,593,916案,其說明了一種具有多重平行連接於觸感區域之週邊上一序列電阻器鏈路中每一電極之觸感螢幕,其揭露了兩種運用線性絕緣區的方式來改善邊框區域所產生的電位”漣波”效應,如第1A與2A圖所示者。其中,第1A圖的圖案,串聯電阻鏈係由串聯電極40串聯形成於導電層上而構成間隙44所構成,串聯電極40之間的間距為S,其包含有外部部份與內部部分,如圖中的外部部份為38,41,43等,而內部部 分42。而其內部部分則係採取每兩個間隙44處形成兩個絕緣間隙45的方式,其中一個絕緣間隙45位於間隙44處,而絕緣間隙45之間隔有不連續電阻段46,其長度略相等,其距離則為S’,等效電阻如第1B圖所示者。 Reference is made to U.S. Patent No. 6,593,916, which is incorporated herein incorporated by reference in its entirety in its entirety in its entirety in the entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire The way to improve the potential "chopping" effect produced by the bezel area, as shown in Figures 1A and 2A. In the pattern of FIG. 1A, the series resistance chain is formed by connecting the series electrodes 40 in series on the conductive layer to form a gap 44. The spacing between the series electrodes 40 is S, which includes the outer portion and the inner portion, such as The outer parts in the figure are 38, 41, 43, etc., while the inner part Points 42. The inner portion is formed by forming two insulating gaps 45 at every two gaps 44. One of the insulating gaps 45 is located at the gap 44, and the insulating gaps 45 are separated by discontinuous resistive segments 46, the lengths of which are slightly equal. The distance is S', and the equivalent resistance is as shown in Fig. 1B.
第2A圖的圖案,其串聯電阻鏈係由串聯電極48,50串聯形成於導電層上而構成間隙54所構成,串聯電極48,50之間距為S,其包含有外部部份與內部部分。而其內部部分則係採取每兩個間隙54處形成兩個絕緣間隙55的方式,每個絕緣間隙55均位於串聯電極的內部部分,而絕緣間隙55之間隔有不連續電阻段56,其長度略相等,其距離則為S’。其等效電阻如第2B圖所示者。 In the pattern of Fig. 2A, the series resistance chain is formed by connecting series electrodes 48, 50 in series on the conductive layer to form a gap 54. The distance between the series electrodes 48, 50 is S, which includes an outer portion and an inner portion. The inner portion is formed by forming two insulating gaps 55 at every two gaps 54. Each insulating gap 55 is located in the inner portion of the series electrode, and the insulating gap 55 is spaced apart by a discontinuous resistive segment 56. Slightly equal, the distance is S'. Its equivalent resistance is as shown in Figure 2B.
接著,請參考美國專利公開案第2006/0119587號,其揭露了另一種改良的電極圖案,如第3A圖所示者。其中的串聯電阻鏈145係由串聯電極105串聯形成於導電層上而構成間隙125所構成,串聯電極105包含有外部部份110與內部部分115,外部部份110與內部部分115形成一空隙120。其內部部分則係採取每兩個間隙125處形成兩個絕緣間隙130的方式,而絕緣間隙130之間有不連續電阻段145,其長度略相等,且在串聯電極105之間隙125處並設計有一導電島140穿插於絕緣間隙間,以改善漣波效應。不連續電阻段145的電壓若為VN,VN+1,則位於其間的導電島140的電壓則可平均化為(VN+VN+1)/2,其等效電路見第3B圖。 Next, please refer to U.S. Patent Publication No. 2006/0119587, which discloses another improved electrode pattern, as shown in Fig. 3A. The series resistor chain 145 is formed by forming a series of electrodes 105 connected in series on the conductive layer to form a gap 125. The series electrode 105 includes an outer portion 110 and an inner portion 115, and the outer portion 110 and the inner portion 115 form a gap 120. . The inner portion is formed by forming two insulating gaps 130 at every two gaps 125, and there are discontinuous resistive segments 145 between the insulating gaps 130, the lengths of which are slightly equal, and are designed at the gaps 125 of the series electrodes 105. A conductive island 140 is interposed between the insulating gaps to improve the chopping effect. If the voltage of the discontinuous resistor segment 145 is V N , V N+1 , the voltage of the conductive island 140 located therebetween can be averaged to (V N +V N+1 )/2, and the equivalent circuit is shown in FIG. 3B. Figure.
儘管有許多廠商努力投入觸控面板的周邊電阻元件圖案研究,在改善邊緣電極的等電位電場上,仍有許多可改進的空間。 Although many manufacturers have worked hard on the peripheral resistive element pattern research of touch panels, there is still much room for improvement in improving the equipotential electric field of the edge electrodes.
有鑑於以上習知技術的問題,本發明提出一種具有均化電極圖案之觸 控面板,藉由不連續電阻鏈所提供的電壓平準化,以及均化電極所提供的電壓均勻化,可提供極窄邊的線路走線空間,亦能得到任何接近線路邊緣區域有優異的線性精確度,誤差值≦1%。 In view of the above problems of the prior art, the present invention proposes a touch having a homogenized electrode pattern The control panel, through the voltage leveling provided by the discontinuous resistor chain, and the voltage equalization provided by the homogenizing electrode, can provide extremely narrow side line routing space, and can also obtain excellent linearity near any edge of the line. Accuracy, error value ≦ 1%.
本發明另有一目的在於,提供一種具有均化電極圖案之觸控面板,藉由將所提供的不連續電阻鏈與均化電極、導電層周邊的串聯電極鏈緊密結合,達到邊框部分窄化的目的,俾使相同基板面積內之可觸控面積增加,進而提升產品搭配設計之彈性。 Another object of the present invention is to provide a touch panel having a uniform electrode pattern, which is narrowed by a tightly combining the discontinuous resistor chain and the homogenizing electrode and the series electrode chain around the conductive layer. The purpose is to increase the touchable area within the same substrate area, thereby improving the flexibility of the product design.
為達上述目的,本發明提出一種具有均化電極圖案之觸控面板,包含:一基板;一導電層,形成於該基板上,具有一內部接觸區;複數個角落電極,形成於該導電層之角落;一串聯電極鏈,包含有複數個電極,形成於該導電層之邊緣並與該些角落電極連接,於該些角落電極外加電壓時形成一矩形電場,每個該電極具有面對該內部接觸區之一內部部分,相鄰之該些電極間具有一間隙;一不連續電阻鏈,包含複數個不連續電阻,形成於該導電層上,並與該串聯電極鏈電連接且形成平行排列,並形成與該內部接觸區之隔離;及,一第一均化電極鏈,由複數個第一均化電極間隔形成,形成於該不連續電阻鏈靠近該內部接觸區之邊緣,以使該不連續電阻之輸出電壓均勻化。 In order to achieve the above object, the present invention provides a touch panel having a homogenized electrode pattern, comprising: a substrate; a conductive layer formed on the substrate and having an internal contact region; and a plurality of corner electrodes formed on the conductive layer a corner electrode chain, comprising a plurality of electrodes formed at an edge of the conductive layer and connected to the corner electrodes, forming a rectangular electric field when the corner electrodes are applied with a voltage, each of the electrodes having a face An inner portion of the inner contact region has a gap between the adjacent electrodes; a discontinuous resistor chain comprising a plurality of discontinuous resistors formed on the conductive layer and electrically connected to the series electrode chain and formed in parallel Arranging and forming an isolation from the inner contact region; and a first homogenizing electrode chain formed by a plurality of first homogenizing electrode spacers formed on the edge of the discontinuous resistor chain adjacent to the inner contact region so that The output voltage of the discontinuous resistor is uniformized.
此外,觸控面板更可包括一第二均化電極鏈,由複數個第二均化電極間隔形成,其形成每兩個該第一均化電極之間隔處,以使該均化電極鏈之輸出電壓更加均勻化。 In addition, the touch panel further includes a second homogenizing electrode chain formed by a plurality of second homogenizing electrodes spaced apart to form a spacing between each of the two first homogenizing electrodes, so that the homogenizing electrode chain The output voltage is more uniform.
該不連續電阻之長度係以Y=aX2+b方程式計算得之,以獲得良好的補償效果,使該矩形電場所產生之等壓線均化,其中,X係為該電極由角落 電極開始之數,b為經實驗之預設值,a係由一預設之線段最大值Ymax計算得之,該線段最大值係由該串聯電極鏈位於兩個角落電極之中央電極段之長度決定之。 The length of the discontinuous resistor is calculated by the equation of Y=aX 2 +b to obtain a good compensation effect, and the isobar line generated by the rectangular electric field is homogenized, wherein the X system is that the electrode is started by the corner electrode. The number, b is the experimental default value, a is calculated by a preset line segment maximum value Ymax, the maximum value of the line segment is determined by the length of the series electrode chain located at the central electrode segment of the two corner electrodes .
其中,形成該不連續電阻鏈之該複數個不連續絕緣段係與該串聯電極鏈之內部部分及該均化電極鏈之邊緣緊密結合。 The plurality of discontinuous insulating segments forming the discontinuous resistor chain are closely coupled to the inner portion of the series electrode chain and the edge of the homogenizing electrode chain.
以下在實施方式中詳細敘述本發明之詳細特徵以及優點,其內容足以使任何熟習相關技藝者瞭解本發明之技術內容並據以實施,且根據本說明書所揭露之內容、申請專利範圍及圖式,任何熟習相關技藝者可輕易地理解本發明相關之目的及優點。 The detailed features and advantages of the present invention are set forth in the Detailed Description of the Detailed Description of the <RTIgt; </ RTI> <RTIgt; </ RTI> </ RTI> </ RTI> <RTIgt; The objects and advantages associated with the present invention can be readily understood by those skilled in the art.
本發明係一種新設計圖樣及結構,運用在電容式觸控面板之偵測時,係利用高阻抗透明導電膜與觸碰物間的微小電容量(中間間隔一層厚膜透明絕緣材料),即可精確偵測得到觸碰物之觸碰座標。而運用在電阻式觸控面板之偵測時,利用觸碰物觸碰觸控面板後所偵測到的電壓準位,即可精確偵測到觸碰物之觸碰座標。 The present invention is a new design pattern and structure, which is used in the detection of a capacitive touch panel, which utilizes a small capacitance between a high-impedance transparent conductive film and a touch object (intermediately separated by a thick film transparent insulating material), that is, The touch coordinates of the touched object can be accurately detected. When the resistive touch panel is detected, the touched object can be accurately detected by using the voltage level detected by the touch object after touching the touch panel.
首先,請參考第4圖,其為本發明之觸控面板分層圖,其包含了基本的電極框層400,導電層300以及基板200。其中,電極框層400的圖案係可採用一種環保無鉛的高溫銀漿,經過網版印刷程序印列在導電層300上。經過500℃以上之高溫將銀金屬熔接於導電層300上,使其間之導通介面電阻值極微小(可視為近零阻值)。其具有高抵抗環境溫度變化之特性。此外,銀導線與導電層300經高溫結晶化後,可明顯提升耐化學性。此外,亦可採用銀導線以外的其他金屬,如鉬/鋁/鉬金屬層、鉻或其他等導電性較 佳之金屬。此外,導電層300可採用較高阻抗者,使其具損耗能量少,電流量少之功效。 First, please refer to FIG. 4 , which is a layered diagram of the touch panel of the present invention, which includes a basic electrode frame layer 400 , a conductive layer 300 , and a substrate 200 . The pattern of the electrode frame layer 400 can be printed on the conductive layer 300 through a screen printing process by using an environmentally friendly lead-free high-temperature silver paste. The silver metal is fused to the conductive layer 300 through a high temperature of 500 ° C or higher, and the conduction resistance value between the electrodes is extremely small (which can be regarded as a near zero resistance value). It has high resistance to changes in ambient temperature. In addition, after the silver wire and the conductive layer 300 are crystallized at a high temperature, the chemical resistance can be remarkably improved. In addition, other metals than silver wires, such as molybdenum/aluminum/molybdenum metal layers, chromium or others, may be used. Good metal. In addition, the conductive layer 300 can be used with a higher impedance, so that it has the effect of less loss of energy and less current.
結構上,基板200可採用玻璃基材,並採取如濺鍍方式製作導電層300,並以蝕刻或雷射方式來產生導電層300上的圖案。接下來,再加印刷高溫銀漿圖樣以形成電極框層400。此外,基板200亦可採用其他材質來製作,例如,軟性基板,並採用適用於軟性基板的製程來製作電極圖樣。 Structurally, the substrate 200 may be a glass substrate, and the conductive layer 300 may be formed by sputtering, and the pattern on the conductive layer 300 may be formed by etching or laser. Next, a high temperature silver paste pattern is printed to form the electrode frame layer 400. Further, the substrate 200 may be formed of other materials, for example, a flexible substrate, and an electrode pattern may be formed by a process suitable for a flexible substrate.
接著,請參考第5圖,其為本發明之導電層300之結構圖,其中黑色區域即為分布於導電層四周的絕緣部311,312,313,314,X軸向者為絕緣部312,314,Y軸向者為絕緣部311,313。絕緣部311,312,313,314係以蝕刻或雷射等方式製作,其作用在於將電極框層400的電極層加以隔絕,未被蝕刻為絕緣部者則形成導電的不連續電阻鏈,用以形成每個電極輸出口的平均電壓準位,以形成均勻分布之等電位電場。其中,未被蝕刻的不連續電阻鏈,其長度係以Y=aX2+b公式計算而得,以形成如第5圖的非均勻分布的絕緣部。詳細的參數獲得方式,將於後續說明之。 Next, please refer to FIG. 5, which is a structural diagram of the conductive layer 300 of the present invention, wherein the black areas are the insulating portions 311, 312, 313, 314 distributed around the conductive layer, the X-axis is the insulating portion 312, 314, and the Y-axis is insulated. Sections 311, 313. The insulating portions 311, 312, 313, and 314 are formed by etching or laser irradiation, and function to isolate the electrode layer of the electrode frame layer 400. If not etched into an insulating portion, a conductive discontinuous resistance chain is formed to form each electrode output. The average voltage level of the port to form a uniformly distributed equipotential electric field. Wherein, the discontinuous resistance chain that is not etched is calculated by the formula of Y=aX 2 +b to form a non-uniformly distributed insulating portion as shown in FIG. 5. The detailed parameter acquisition method will be explained later.
此外,在導電層300的四個角落321,322,323,324,則為四個角落電極的位置。 In addition, the four corners 321, 322, 323, 324 of the conductive layer 300 are the positions of the four corner electrodes.
接著,請參考第6圖,其為本發明之電極框層400之結構圖,其包括有四個角落電極411,412,413,414,以及與四個角落電極相串聯的串聯電極鏈420,最後,還有一組與串聯電極鏈420形成一第一間隔距離(D1)之電極鏈430。其中,在第6圖的實施例中,串聯電極鏈420係藉由多個Z型電極形成外部部分與內部部分重疊之結構,且每個電極之間構成有固定間隙,以作為後續的串聯電阻之形成空間。於是,當電極框層400形成於 導電層300上後,串聯電極鏈420的電極間之固定間隙即構成串聯電阻鏈,使得角落電極所傳遞來的電壓提供串接的電壓供應。而電極鏈430則可再將串聯電極鏈420所供應的電壓再加以細分為更細的電壓分佈。 Next, please refer to FIG. 6, which is a structural diagram of the electrode frame layer 400 of the present invention, which includes four corner electrodes 411, 412, 413, 414, and a series electrode chain 420 connected in series with the four corner electrodes. Finally, there is a group and The series electrode chain 420 forms an electrode chain 430 of a first separation distance (D1). Wherein, in the embodiment of FIG. 6, the series electrode chain 420 is formed by overlapping a plurality of Z-type electrodes with an inner portion and an inner portion, and each electrode is formed with a fixed gap as a subsequent series resistance. Forming space. Thus, when the electrode frame layer 400 is formed on After the conductive layer 300, the fixed gap between the electrodes of the series electrode chain 420 constitutes a series resistance chain, so that the voltage transmitted from the corner electrode provides a series voltage supply. The electrode chain 430 can then subdivide the voltage supplied by the series electrode chain 420 into a finer voltage distribution.
其中,串聯電阻鏈可以其他的結構,如類S、叉型、連續段等設計方式,以可達到電壓之連續分配者為宜。而串聯電極鏈420的Z型電極數目,可依觸控面板的大小來進行設計,面板尺寸由小至大,可設計為每個軸向3,5,7,9,11,13,15,17,...(2n+1),n>1等不同數量的電極。例如,第6圖係為9個Z型電極的實施例。其中,中央電極段係由兩個Z型電極反接的方式構成,其長度為Ymax。從左到右,分別有Y1,Y2,Y3,Y4,Y5電極,以此類推。 Among them, the series resistance chain can be other structures, such as S-type, fork type, continuous section and other design methods, in order to achieve continuous distribution of voltage is appropriate. The number of Z-type electrodes of the series electrode chain 420 can be designed according to the size of the touch panel. The size of the panel is from small to large, and can be designed as 3, 5, 7, 9, 11, 13, 15 for each axis. 17,...(2n+1), n>1 and other different numbers of electrodes. For example, Figure 6 is an example of nine Z-type electrodes. The central electrode segment is formed by reversing two Z-shaped electrodes and has a length of Ymax. From left to right, there are Y1, Y2, Y3, Y4, Y5 electrodes, and so on.
由於串聯電極鏈的輸入電壓,係由角落電極所傳遞而來,其經由串聯電阻鏈後,會於每個Z型電極處形成壓降的現象。為了能提供導電層300均勻的電場分佈,本發明係透過導電層300上的絕緣部311,312,313,314所產生的不連續電阻鏈來產生不均勻的電阻,並藉由距離角落電極越近者,給予越大電阻的基本原則來設計不連續電阻鏈之電阻值。於是,經由串聯電阻鏈所傳遞的電壓值,將會由不連續電阻鏈與以補償,而形成均勻的電壓供應。 Since the input voltage of the series electrode chain is transmitted by the corner electrode, a pressure drop occurs at each Z-type electrode after passing through the series resistance chain. In order to provide a uniform electric field distribution of the conductive layer 300, the present invention generates a non-uniform resistance through a discontinuous resistance chain generated by the insulating portions 311, 312, 313, 314 on the conductive layer 300, and the closer the distance is to the corner electrode, the greater the giving The basic principle of resistance is to design the resistance value of the discontinuous resistor chain. Thus, the voltage value delivered via the series resistor chain will be compensated by the discontinuous resistor chain to form a uniform voltage supply.
然而,由不連續電阻鏈所供應的電壓值,會由於不連續電阻鏈的電阻段長度不一,而導致電壓分佈的邊緣性不佳。因此,本發明除了不連續電阻鏈的設計外,更提供了電極鏈430的設計,以使得電壓的供應能夠充分的均勻化。電極鏈430係在電極框層400形成於導電層300上後,配置於不連續電阻鏈的內層,亦即,不連續電阻鏈係配置於串聯電極鏈420與電 極鏈430之間。於是,經過不連續電阻鏈的電壓供應,再經電極鏈430的電壓均勻化,本發明即可提供一個電場均勻化程度極佳的觸控面板,經實測結果,其誤差範圍在1%以內。 However, the voltage value supplied by the discontinuous resistor chain may result in poor edge margin of the voltage distribution due to the different lengths of the resistor segments of the discontinuous resistor chain. Therefore, in addition to the design of the discontinuous resistance chain, the present invention further provides the design of the electrode chain 430 so that the supply of voltage can be sufficiently uniformized. The electrode chain 430 is disposed on the inner layer of the discontinuous resistor chain after the electrode frame layer 400 is formed on the conductive layer 300, that is, the discontinuous resistor chain is disposed in the series electrode chain 420 and the electric Between the pole chains 430. Therefore, after the voltage supply of the discontinuous resistor chain is supplied and the voltage of the electrode chain 430 is uniformized, the present invention can provide a touch panel with an excellent electric field uniformity, and the error range of the measured result is within 1%.
第4~6圖,係以整體架構來說明本發明之電極結構者,接下來,將以細部的結構圖來說明本發明的均化電極圖案。 In the fourth to sixth embodiments, the electrode structure of the present invention will be described with an overall structure. Next, the homogenized electrode pattern of the present invention will be described with a detailed structural view.
請參考第7圖,其為第6圖的電極框層400之細部結構圖。圖中繪示了四個Z型電極,其中,兩個完整者(片段長度為L1),兩個片段者。Z型電極420-Xn-1,420-Xn,420-XN+1,分別可提供VN-1,VN,VN+1的電壓分佈,電極鏈430則可提供更細的電壓分佈。Z型電極的內部部分與電極鏈430所形成的空隙D1,其距離端視導電層300的物理特性而訂,其為形成所需要的不連續電阻鏈,因此,由電阻的公式R=ρL/A,可計算出所需的D1值。其中,R為導線兩端點電阻值,ρ為導線之導電係數,A為導線之截面積,L為導線之長度。同時,此空隙D1為不連續電阻鏈形成之處,其將於後續說明之。 Please refer to FIG. 7, which is a detailed structural view of the electrode frame layer 400 of FIG. The figure shows four Z-type electrodes, of which two complete (segment length L1), two fragments. Z-type electrodes 420-X n-1 , 420-X n , 420-X N+1 provide voltage distributions of V N-1 , V N , V N+1 , respectively, and electrode chain 430 provides finer Voltage distribution. The gap D1 formed by the inner portion of the Z-shaped electrode and the electrode chain 430 is determined by the physical characteristics of the conductive layer 300, which is a discontinuous resistance chain required for formation. Therefore, the formula of the resistance is R=ρL/ A, the required D1 value can be calculated. Where R is the resistance value at both ends of the wire, ρ is the conductivity of the wire, A is the cross-sectional area of the wire, and L is the length of the wire. At the same time, this gap D1 is where the discontinuous resistance chain is formed, which will be described later.
Z型電極之間有水平間隔421以及垂直間隔422,使得Z型電極之間形成串聯之電阻,進而構成串聯電阻鏈。Z型電極厚度則為T1,具體的厚度設計端視生產製造之技藝而定。原則上,Z型電極的厚度T1越薄越好,以降低邊框的大小,以使得觸控面板之可觸控區域更大。 The Z-type electrodes have a horizontal interval 421 and a vertical interval 422, so that a series resistance is formed between the Z-type electrodes, thereby forming a series resistance chain. The Z-type electrode thickness is T1, and the specific thickness design depends on the manufacturing technology. In principle, the thinner the thickness T1 of the Z-shaped electrode, the better, to reduce the size of the bezel so that the touchable area of the touch panel is larger.
電極鏈430則包括有第一均化電極431與第二均化電極432。其中,第一均化電極431的長度為L2,厚度為T2,其間隔434的寬度為L5,並且,第一均化電極431可為一T型結構,其T型底部之長度為L2A,厚度為與第二均化電極432平行為佳。第二均化電極432的長度則為L3,且第 一均化電極431與第二均化電極432之間隔距離為433。其中,最佳者為第一均化電極431的T型底部長度L2A等於第二均化電極432的長度L3者,而第一均化電極431的T型底部邊緣與第二均化電極432的邊緣所形成的間隙距離L4,最佳者為第二均化電極432的長度之2/3,其餘的比例亦可,如1/5,1/4,1/3,1/2,2/5,2/7,3/5,3/7,4/5,...。可以實際的測試來決定何者所達到的電場均勻性最佳。 The electrode chain 430 includes a first homogenizing electrode 431 and a second homogenizing electrode 432. The length of the first homogenizing electrode 431 is L2, the thickness is T2, and the width of the interval 434 is L5, and the first homogenizing electrode 431 can be a T-shaped structure, and the length of the T-shaped bottom is L2A, and the thickness is It is preferred to be parallel to the second homogenizing electrode 432. The length of the second homogenizing electrode 432 is L3, and the The distance between the one homogenizing electrode 431 and the second homogenizing electrode 432 is 433. Wherein, the T-type bottom length L2A of the first homogenizing electrode 431 is equal to the length L3 of the second homogenizing electrode 432, and the T-shaped bottom edge of the first homogenizing electrode 431 and the second homogenizing electrode 432 are preferred. The gap distance L4 formed by the edge is preferably 2/3 of the length of the second homogenizing electrode 432, and the remaining ratios may be, for example, 1/5, 1/4, 1/3, 1/2, 2/. 5, 2/7, 3/5, 3/7, 4/5,... The actual test can be used to determine which of the electric field uniformities achieved is optimal.
在串聯電極鏈420的Z型電極內部部分內緣,平均分布有均化電極鏈430的多個第一均化電極431(構成第一均化電極鏈)與多個第二均化電極432(構成第二均化電極鏈),如第7圖所示者。當電極鏈430形成於導電層300上時,第一均化電極鏈與第二均化電極鏈之間隔433,434即構成導電層300上的電阻結構。由於第一均化電極鏈與第二均化電極鏈為均勻分布者,因此,可使得經由Z型電極再經由不連續電阻鏈所傳遞來的電壓,再做一次均勻化的分配。亦即,電極鏈430可使得最終傳遞到導電層300的觸控區的電場,更均勻地分配。 On the inner edge of the inner portion of the Z-type electrode of the series electrode chain 420, a plurality of first homogenizing electrodes 431 (constituting the first homogenizing electrode chain) and a plurality of second homogenizing electrodes 432 of the homogenizing electrode chain 430 are evenly distributed ( The second homogenizing electrode chain is constructed as shown in Fig. 7. When the electrode chain 430 is formed on the conductive layer 300, the spacing 433, 434 between the first homogenizing electrode chain and the second homogenizing electrode chain constitutes a resistive structure on the conductive layer 300. Since the first homogenizing electrode chain and the second homogenizing electrode chain are uniformly distributed, the voltage transmitted through the Z-type electrode and then via the discontinuous resistance chain can be further distributed. That is, the electrode chain 430 can cause the electric field ultimately transmitted to the touch area of the conductive layer 300 to be more evenly distributed.
而每個Z型電極內部部分內緣的第一均化電極鏈與第二均化電極鏈的製作數量,除了第7圖的2組外,可視生產技巧來做不同的數量搭配,例如,可以製作為3組、4組、5組...均可。如此的配置,需同時搭配導電層300上的不連續電阻鏈之設計共同考量。亦即,每個第一均化電極431的位置,均配置於一個不連續電阻段,以作為電壓傳遞之媒介。而第二均化電極432之後可將電壓再做更細緻的配置,例如,製作第三均化電極再進行均化一次。 And the number of the first homogenizing electrode chain and the second homogenizing electrode chain in the inner edge of each inner portion of the Z-shaped electrode, in addition to the two groups in the seventh figure, can be made by different production factors according to the production skill, for example, It can be made into 3 groups, 4 groups, 5 groups...all. Such a configuration needs to be considered together with the design of the discontinuous resistor chain on the conductive layer 300. That is, the position of each of the first homogenizing electrodes 431 is disposed in a discontinuous resistance section as a medium for voltage transfer. The second homogenizing electrode 432 can then perform a more detailed configuration of the voltage, for example, making a third homogenizing electrode and then homogenizing once.
接著,請參考第8圖,其為將電極框層400形成於導電層300後的放 大圖。由圖中可清楚觀察到,不連續電阻331形成於絕緣部311、Z型電極與第一均化電極431之間,其藉由導電層300而形成電阻,也形成Z型電極的導通部分,並且,其以不連續電阻331與Z型電極、第一均化電極之間係為無縫接合。從圖中可清楚發現,每個Z型電極的內部部分,均有一個不連續電阻331的一段;而Z型電極的垂直部分的中心,則對應有一個不連續電阻331的一段。於是,第一均化電極431即可藉由不連續電阻331傳導Z型電極的電壓並加以均化,接著,再藉由第二均化電極432將第一均化電極431的電壓,再進行二次均化。由於第二均化電極432係與第一均化電極431的T型底部平行排列,於是,第一均化電極431的電壓可與第二均化電極432的電壓均勻地輸出至導電層300上。 Next, please refer to FIG. 8 , which is to place the electrode frame layer 400 on the conductive layer 300. Big picture. It can be clearly seen from the figure that the discontinuous resistor 331 is formed between the insulating portion 311, the Z-type electrode and the first homogenizing electrode 431, and the conductive layer 300 forms a resistance, and also forms a conduction portion of the Z-shaped electrode. Further, it is seamlessly joined between the discontinuous resistor 331 and the Z-electrode and the first homogenizing electrode. As is clear from the figure, the inner portion of each of the Z-shaped electrodes has a section of the discontinuous resistor 331; and the center of the vertical portion of the Z-shaped electrode corresponds to a section of the discontinuous resistor 331. Therefore, the first homogenizing electrode 431 can conduct and homogenize the voltage of the Z-type electrode by the discontinuous resistor 331, and then carry on the voltage of the first homogenizing electrode 431 by the second homogenizing electrode 432. Secondary homogenization. Since the second homogenizing electrode 432 is arranged in parallel with the T-shaped bottom of the first homogenizing electrode 431, the voltage of the first homogenizing electrode 431 and the voltage of the second homogenizing electrode 432 can be uniformly output to the conductive layer 300. .
此外,由於不連續電阻鏈提供不同的電阻給Z型電極作為電壓出口以作為電壓之補償,於是,每個Z型電極經由不連續電阻段的輸出電壓將會一致。再經過電極鏈430的電場均化,即可獲得相當均勻的邊緣電場分佈,可有效地降低邊緣電場的漣波效應。 In addition, since the discontinuous resistor chain provides different resistances to the Z-type electrodes as voltage outlets as compensation for voltage, then the output voltage of each Z-type electrode via the discontinuous resistor segments will be uniform. After the electric field of the electrode chain 430 is homogenized, a fairly uniform fringe electric field distribution can be obtained, which can effectively reduce the chopping effect of the fringe electric field.
其中,不連續電阻331的長度,係依據Y=aX2+b的公式計算得其長度。計算方法說明如下: The length of the discontinuous resistor 331 is calculated according to the formula of Y=aX 2 +b. The calculation method is as follows:
1.X係為由角落電極起算的Z型電極數,例如,從角落電極411開始起算,共有X1=1,X2=2,X3=3,X4=4,X5=5,5個Z型電極。 1.X is the number of Z-type electrodes calculated from the corner electrodes. For example, starting from the corner electrode 411, there are X1=1, X2=2, X3=3, X4=4, X5=5, and 5 Z-type electrodes. .
2.b為預設值,其由實驗與統計獲得,最佳者為0.3~2.0mm之間。 2.b is the preset value, which is obtained by experiment and statistics. The best one is between 0.3~2.0mm.
3.a係由Ymax計算而得,Ymax的大小,可由第6圖上方之中央電極429長度獲得。至於中央電極的長度,則以面板的大小以及串聯電極鏈的數目來評估獲得。Ymax較佳者為該電極長度再左右各減去 0.1mm為最佳。 3.a is calculated from Ymax, and the size of Ymax can be obtained from the length of the center electrode 429 above the sixth figure. As for the length of the center electrode, it is evaluated by the size of the panel and the number of series electrode chains. Ymax is better, the length of the electrode is subtracted from each other. 0.1mm is the best.
4.由Ymax,b值與X值,即可獲得a值得參數。 4. From Ymax, b value and X value, a value parameter can be obtained.
於是,Yn-1的長度,以Yn-1=a(n-1)2+b計算得之,Yn的長度,以Yn=a(n)2+b計算得之。而Yn-1與Yn的中間Yn-0.5的長度,可以用兩種方式來計算得之:I.X=(Xn-1+Xn)/2,再代入公式;II.以Y=(Yn-1+Yn)/2。實際的效果,以第一式較佳。 Thus, Y n-1 length to Y n-1 = a (n -1) 2 + b calculated, the length Y n to Y n = a (n) 2 + b calculated sum. The length of Y n-0.5 between Y n-1 and Y n can be calculated in two ways: IX = (X n-1 + X n ) / 2, and then substituted into the formula; II. (Y n-1 +Y n )/2. The actual effect is better in the first form.
其中,不連續電阻331的最佳位置,係以Z型電極的垂直段中心YC1以及其內部部分之中心YC2(兩垂直段中心之中心),而第一均化電極之中心則對應至不連續電阻之中心即可。當然,在生產製造上所產生的些許偏差,或者,設計時進行非中心的配置,亦為本發明可提供者,其均可達到本發明所欲達成之效果。 Wherein, the optimal position of the discontinuous resistor 331 is the center of the vertical segment YC1 of the Z-shaped electrode and the center YC2 of the inner portion thereof (the center of the center of the two vertical segments), and the center of the first homogenizing electrode corresponds to the discontinuity The center of the resistor can be. Of course, some deviations in manufacturing, or non-central configuration at the time of design, are also available to the present invention, all of which achieve the desired effects of the present invention.
此外,在實務上,亦可採用Z型電極的內部部分分配多個不連續電阻的設計方式。換句話說,本發明係於串聯電極鏈的每個電極與電極間,配置一個不連續電阻,而每個電極的內部部分,亦可配置一個以上的不連繫電阻。此外,每個不連續電極則可配置一個以上的第一均化電極,而第一均化電極之間,則可配置一個以上的第二均化電極。亦即,不連續電阻,第一均化電極或第二均化電極的數量配置,以能達到本發明所欲解決的電場均化的問題為目的,其可視生產設備可達到的精度以及成本為主要的考量。 In addition, in practice, a design method in which a plurality of discontinuous resistors are distributed in the inner portion of the Z-type electrode can also be employed. In other words, the present invention is characterized in that a discontinuous resistor is disposed between each electrode and the electrode of the series electrode chain, and one or more unconnected resistors may be disposed in the inner portion of each electrode. In addition, more than one first homogenizing electrode may be disposed for each discontinuous electrode, and more than one second homogenizing electrode may be disposed between the first homogenizing electrodes. That is, the discontinuous resistance, the number of the first homogenizing electrode or the second homogenizing electrode is configured to achieve the problem of electric field homogenization to be solved by the present invention, and the accuracy and cost achievable by the visual production equipment are The main consideration.
若採用每個串聯電極的電極內部部分以多個不連續電阻的方式設計,也就是在兩個Z型電極的垂直段中心YC1(若採用其他的電極架構,則為電極與電極之間的電極內部部分)配置有多個不連續電阻,則配置於其間的不 連續電阻的長度計算,同樣可採用上述的兩種計算方式獲得。例如,採用兩個不連續電阻配置於Z型電極的內部部分時,其較佳者為與兩旁的不連續電阻作等距離配置,如介於Yn-1與Yn之間時,分別為Yn-0.67,Yn-0.33。而Yn-0.67=a(n-0.67)2+b,以Yn-0.33=a(n-0.33)2+b;或者,Yn-0.67=(Yn-1*2+Yn*1)/3以Yn-0.33=(Yn-1*1+Yn*2)/3。其中,亦以前者的效果較佳。 If the inner portion of the electrode of each series electrode is designed with a plurality of discontinuous resistances, that is, at the center of the vertical portion of the two Z-shaped electrodes YC1 (if other electrode structures are used, the electrode between the electrodes and the electrodes) The internal portion) is configured with a plurality of discontinuous resistors, and the length calculation of the discontinuous resistor disposed therebetween can also be obtained by the above two calculation methods. For example, when two discontinuous resistors are disposed on the inner portion of the Z-shaped electrode, it is preferably equidistantly disposed with the discontinuous resistors on both sides, such as between Y n-1 and Y n , respectively Y n-0.67 , Y n-0.33 . And Y n-0.67 = a(n-0.67) 2 +b, with Y n-0.33 = a(n-0.33) 2 +b; or, Y n-0.67 = (Y n-1 *2+Y n * 1) /3 is Y n-0.33 = (Y n-1 *1 + Y n * 2) / 3. Among them, the former has a better effect.
此外,用不同的計算方法所獲得之不連續電阻,亦可用於本發明。只要透過本發明的第一均化電極,或者,透過本發明的第一均化電極與第二均化電極的搭配,即可形成良好的均勻電壓分配。而Z型電極,僅為本發明所採用的一個實施例而已,其他的不同串聯電極鏈的形狀,亦可用作為本發明的實施例。由於其原理皆相同,以下不再贅述。 Further, discontinuous resistors obtained by different calculation methods can also be used in the present invention. A good uniform voltage distribution can be formed by the first homogenizing electrode of the present invention or by the combination of the first homogenizing electrode and the second homogenizing electrode of the present invention. The Z-type electrode is only one embodiment used in the present invention, and the shape of other different series electrode chains can also be used as an embodiment of the present invention. Since the principles are the same, they will not be described below.
於是,經由本發明之電極框層400與導電層300的圖案設計,即可平均化角落電極411,412,413,414之間的電阻值。故X軸向的電壓等位線即使在近線路邊緣,仍能取得極佳的平行線分布;同樣地,Y軸向的電壓等位線亦可得到極佳的平行線分布。 Thus, the resistance between the corner electrodes 411, 412, 413, 414 can be averaged by the pattern design of the electrode frame layer 400 and the conductive layer 300 of the present invention. Therefore, the voltage equipotential line of the X-axis can obtain an excellent parallel line distribution even at the edge of the line; similarly, the voltage equipotential line of the Y-axis can also obtain an excellent parallel line distribution.
第8圖的實施例,係說明了構成不連續電阻331的絕緣部311形成於串聯電極鏈420的內部部分以及第一串聯電極鏈431之間,並且,絕緣部311與串聯電極鏈420及第一串聯電極鏈431緊密連結,可形成良好的絕緣關係。如此的結構,可有效地使Z型電極的電壓準確地提供給第一串聯電極鏈431。 In the embodiment of Fig. 8, the insulating portion 311 constituting the discontinuous resistor 331 is formed between the inner portion of the series electrode chain 420 and the first series electrode chain 431, and the insulating portion 311 and the series electrode chain 420 and the A series electrode chain 431 is closely coupled to form a good insulating relationship. With such a structure, the voltage of the Z-type electrode can be efficiently supplied to the first series electrode chain 431.
然而,在生產製造時,難免會發生製程上的偏差,使得絕緣部311未能準確地形成於串聯電極鏈420的內部部分以及第一串聯電極鏈431之間。以產品使用的角度而言,該等產品若能達到客戶之要求,仍能列為良 品。 However, at the time of production and manufacturing, variations in the process are inevitably caused, so that the insulating portion 311 is not accurately formed between the inner portion of the series electrode chain 420 and the first series electrode chain 431. From the perspective of product use, these products can still be listed as good if they meet the requirements of customers. Product.
請參考第9圖,其為將電極框層400形成於導電層300後的放大圖之第二例。在不連續電阻331的絕緣部311形成於串聯電極鏈420的內部部分以及第一串聯電極鏈431之間,並且,絕緣部311與串聯電極鏈420形成一間距D1A,且與第一串聯電極鏈431形成一間距D1B。此種結構仍可達到有效的電場均勻分佈性。 Please refer to FIG. 9 , which is a second example of an enlarged view of the electrode frame layer 400 formed on the conductive layer 300 . The insulating portion 311 of the discontinuous resistor 331 is formed between the inner portion of the series electrode chain 420 and the first series electrode chain 431, and the insulating portion 311 forms a pitch D1A with the series electrode chain 420, and the first series electrode chain 431 forms a pitch D1B. This structure can still achieve an effective electric field uniform distribution.
雖然本發明的技術內容已經以較佳實施例揭露如上,然其並非用以限定本發明,任何熟習此技藝者,在不脫離本發明之精神所作些許之更動與潤飾,皆應涵蓋於本發明的範疇內,因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。 Although the technical content of the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and any modifications and refinements made by those skilled in the art without departing from the spirit of the present invention are encompassed by the present invention. The scope of protection of the present invention is therefore defined by the scope of the appended claims.
38‧‧‧外部部份 38‧‧‧External part
40‧‧‧串聯電極 40‧‧‧ series electrode
41‧‧‧外部部分 41‧‧‧External part
42‧‧‧內部部分 42‧‧‧Internal part
43‧‧‧外部部份 43‧‧‧External part
44‧‧‧間隙 44‧‧‧ gap
45‧‧‧絕緣間隙 45‧‧‧Insulation gap
46‧‧‧不連續電阻段 46‧‧‧discontinuous resistance segment
S‧‧‧間距 S‧‧‧ spacing
S’‧‧‧間距 S’‧‧‧ spacing
48‧‧‧串聯電極 48‧‧‧ series electrode
50‧‧‧串聯電極 50‧‧‧ series electrode
54‧‧‧間隙 54‧‧‧ gap
55‧‧‧絕緣間隙 55‧‧‧Insulation gap
56‧‧‧不連續電阻段 56‧‧‧discontinuous resistance segment
105‧‧‧串聯電極 105‧‧‧ series electrode
110‧‧‧外部部份 110‧‧‧External part
115‧‧‧內部部分 115‧‧‧ internal part
120‧‧‧空隙 120‧‧‧ gap
125‧‧‧間隙 125‧‧‧ gap
130‧‧‧絕緣間隙 130‧‧‧Insulation gap
140‧‧‧導電島 140‧‧‧conductive island
145‧‧‧不連續電阻段 145‧‧‧discontinuous resistance segment
VN,VN+1‧‧‧電壓 V N , V N+1 ‧‧‧ voltage
200‧‧‧基板 200‧‧‧Substrate
300‧‧‧導電層 300‧‧‧ Conductive layer
311‧‧‧絕緣部 311‧‧‧Insulation
312‧‧‧絕緣部 312‧‧‧Insulation
313‧‧‧絕緣部 313‧‧‧Insulation
314‧‧‧絕緣部 314‧‧‧Insulation
321‧‧‧角落 321‧‧‧ corner
322‧‧‧角落 322‧‧‧ corner
323‧‧‧角落 323‧‧‧ corner
324‧‧‧角落 324‧‧‧ corner
331‧‧‧不連續電阻 331‧‧‧Discontinuous resistance
400‧‧‧電極框層 400‧‧‧electrode frame
411‧‧‧角落電極 411‧‧‧ corner electrode
412‧‧‧角落電極 412‧‧‧ corner electrode
413‧‧‧角落電極 413‧‧‧ corner electrode
414‧‧‧角落電極 414‧‧‧ corner electrode
420‧‧‧串聯電極鏈 420‧‧‧Series electrode chain
421‧‧‧間隔 421‧‧‧ interval
420-Xn-1,‧‧‧Z型電極 420-X n-1 , ‧‧‧Z type electrode
420-Xn‧‧‧Z型電極 420-X n ‧‧‧Z type electrode
420-XN+1‧‧‧Z型電極 420-X N+1 ‧‧‧Z type electrode
422‧‧‧間隙 422‧‧‧ gap
423‧‧‧間隙 423‧‧‧ gap
429‧‧‧中央電極 429‧‧‧Central electrode
430‧‧‧電極鏈 430‧‧‧electrode chain
431‧‧‧第一均化電極 431‧‧‧First homogenizing electrode
432‧‧‧第二均化電極 432‧‧‧Second homogenized electrode
433‧‧‧間隔 433‧‧‧ interval
434‧‧‧間隔 434‧‧‧ interval
D1‧‧‧間距 D1‧‧‧ spacing
D1A‧‧‧間距 D1A‧‧‧ spacing
D1B‧‧‧間距 D1B‧‧‧ spacing
Ymax‧‧‧最大電極長度 Ymax‧‧‧Maximum electrode length
L1‧‧‧長度 L1‧‧‧ length
L2‧‧‧長度 L2‧‧‧ length
L2A‧‧‧T型底部長度 L2A‧‧‧T type bottom length
L3‧‧‧長度 L3‧‧‧ length
L4‧‧‧間隙距離 L4‧‧‧ clearance distance
L5‧‧‧寬度 L5‧‧‧Width
T1‧‧‧厚度 T1‧‧‧ thickness
T2‧‧‧厚度 T2‧‧‧ thickness
第1A圖係為習知技術用於觸控面板之導電邊框電極圖案第一例;第1B圖係為第1A圖之導電邊框電極圖案之等效電路;第2A圖係為習知技術用於觸控面板之導電邊框電極圖案第二例;第2B圖係為第2A圖之導電邊框電極圖案之等效電路;第3A圖係為習知技術用於觸控面板之導電邊框電極圖案第三例;第3B圖係為第3A圖之導電邊框電極圖案之等效電路;第4圖係為本發明之觸控面板分層圖;第5圖係為本發明之導電層300之結構圖;第6圖係為本發明之電極框層400之結構圖;第7圖係為第6圖的電極框層400之細部結構圖;第8圖係為本發明將電極框層400形成於導電層300後的放大圖;及第9圖係為本發明將電極框層400形成於導電層300後的放大圖之第二例。 1A is a first example of a conductive bezel electrode pattern used in a touch panel of the prior art; FIG. 1B is an equivalent circuit of the conductive bezel electrode pattern of FIG. 1A; FIG. 2A is a conventional technique for The second example of the conductive frame electrode pattern of the touch panel; the second circuit is the equivalent circuit of the conductive frame electrode pattern of the second embodiment; the third embodiment is the third embodiment of the conductive frame electrode pattern for the touch panel. 3B is an equivalent circuit of the conductive bezel electrode pattern of FIG. 3A; FIG. 4 is a layered view of the touch panel of the present invention; FIG. 5 is a structural view of the conductive layer 300 of the present invention; 6 is a structural view of the electrode frame layer 400 of the present invention; FIG. 7 is a detailed structural view of the electrode frame layer 400 of FIG. 6; and FIG. 8 is a view showing the electrode frame layer 400 formed of a conductive layer for the present invention. The enlarged view after 300; and the ninth figure is a second example of an enlarged view of the electrode frame layer 400 formed on the conductive layer 300 of the present invention.
311‧‧‧絕緣部 311‧‧‧Insulation
331‧‧‧不連續電阻 331‧‧‧Discontinuous resistance
421‧‧‧間隔 421‧‧‧ interval
422‧‧‧間隙 422‧‧‧ gap
423‧‧‧間隙 423‧‧‧ gap
420-Xn-1,‧‧‧Z型電極 420-X n-1 , ‧‧‧Z type electrode
420-Xn‧‧‧Z型電極 420-X n ‧‧‧Z type electrode
420-Xn+1‧‧‧Z型電極 420-X n+1 ‧‧‧Z type electrode
431‧‧‧第一均化電極 431‧‧‧First homogenizing electrode
432‧‧‧第二均化電極 432‧‧‧Second homogenized electrode
Claims (15)
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TWI502426B (en) * | 2013-05-21 | 2015-10-01 | Liyitec Inc | Touch panel and its induction electrode structure |
TWI710947B (en) * | 2015-11-02 | 2020-11-21 | 奇畿科技股份有限公司 | Linear adjustment and compensation method and structure for resistive touch panel |
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TW550511B (en) * | 2000-11-03 | 2003-09-01 | Elo Touchsystems Inc | Touchscreen having multiple parallel connections to each electrode in a series resistor chain on the periphery of the touch area |
US20060119587A1 (en) * | 2002-04-16 | 2006-06-08 | Aroyan James L | Touch sensor with improved electrode pattern |
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TW550511B (en) * | 2000-11-03 | 2003-09-01 | Elo Touchsystems Inc | Touchscreen having multiple parallel connections to each electrode in a series resistor chain on the periphery of the touch area |
US20060119587A1 (en) * | 2002-04-16 | 2006-06-08 | Aroyan James L | Touch sensor with improved electrode pattern |
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