TW201432535A - Capacitive touch panel module - Google Patents
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本創作係為一種電容觸控模組，尤指一種單層一維式電容觸控模組。 The present invention is a capacitive touch module, especially a single-layer one-dimensional capacitive touch module.
如圖6及7所示，目前一維式單層電容觸控面板係主要於一基板上形成有複數並排ITO電極組51，該電極組51各包含有一電極對，如圖6所示，該基板50一側連接一控制軟板60，以電性連接其上的複數電極組51的電極對，進行掃描並檢測基板50上的物件70位置。各電極對係包含二組形狀對稱的尖形狀單電極單元511、512。 As shown in FIG. 6 and FIG. 7, the one-dimensional single-layer capacitive touch panel is mainly formed with a plurality of side-by-side ITO electrode groups 51 on a substrate, and the electrode groups 51 each include an electrode pair, as shown in FIG. A control soft board 60 is connected to one side of the substrate 50 to electrically connect the electrode pairs of the plurality of electrode groups 51 thereon, and scans and detects the position of the object 70 on the substrate 50. Each electrode pair comprises two sets of sharp-shaped single-electrode cells 511, 512 that are symmetric in shape.
至於該控制軟板60檢測基板50上物件的方法則如美國公告第8,121,283號「Tapered capacitive sensing structure(尖形狀電容感應結構)」專利所述，當基板50出現有觸碰物件70時，該物件70所及的複數單電極單元511、512會分別對地會產生一電容感應量，由於複數單電極單元511、512對應該物件70位置的區域面積不同，故所生成的電容感應量亦不同，如此即可藉由電容感應量的有無及大小，判斷該物件70位置的二維座標，該物件70位置會於電極對Y2具有電容感應量，故可決定Y座標為Y2，又二單電極單元511、512的電容感應量有大小之分，其中單電極(白色)的電容感應量大於單電極(灰色)的電容感應量，故 依據二電容感應量的大小，可反應物件對應二單電極區域大小，進而決定該物件位置的X座標X2，最後獲得物件位置的二維座標為(Y2,X2)。 As for the method of detecting the object on the substrate 50 by the control flexible board 60, as described in the "Tapered capacitive sensing structure" of U.S. Patent No. 8,121,283, when the substrate 50 has the touch object 70, the object The plurality of single-electrode units 511 and 512 respectively generate a capacitance induction amount to the ground. Since the area of the area corresponding to the position of the object 70 by the plurality of single-electrode units 511 and 512 is different, the generated capacitance sensing amount is also different. In this way, the two-dimensional coordinates of the position of the object 70 can be determined by the presence or absence of the capacitance sensing amount, and the position of the object 70 has a capacitance sensing amount on the electrode pair Y2, so that the Y coordinate Y2 and the two single electrode unit can be determined. The capacitance sensing quantity of 511 and 512 is divided into small and small, wherein the capacitance of the single electrode (white) is greater than the capacitance of the single electrode (gray), so According to the magnitude of the two-capacitance sensing, the size of the two-electrode region corresponding to the object can be determined, and then the X coordinate X2 of the object position is determined, and finally the two-dimensional coordinate of the position of the object is (Y2, X2).
為滿足特定應用，一維式單層電容觸控面板線性度必須提升，而最直覺的作法如圖7所示，倍數增加基板50’上的電極組51數量，然而如此即會使得控制軟板60’上用以連接電極組51的單電極單元511、512的訊號端子611必須加倍，而使得原圖6控制軟板60所使用的控制器61無法使用，必須更換接腳數加倍的控制器61’，不但製作成本相對提升，因為選用加倍接腳的控制器61’，該控制器61’較圖6的控制器61的體積變大，使得元件需求的空間增加，不利於縮小觸控裝置之整體體積或邊框尺寸。 To meet specific applications, the linearity of a one-dimensional single-layer capacitive touch panel must be increased, and the most intuitive approach is shown in Figure 7. The multiple increases the number of electrode sets 51 on the substrate 50', but this will cause the control soft board The signal terminal 611 of the single-electrode unit 511, 512 for connecting the electrode group 51 on the 60' must be doubled, so that the controller 61 used to control the flexible board 60 of the original FIG. 6 cannot be used, and the controller that doubles the number of pins must be replaced. 61', not only the production cost is relatively improved, because the controller 61' of the double pin is selected, the controller 61' is larger than the controller 61 of FIG. 6, so that the space required for the component is increased, which is disadvantageous for reducing the touch device. The overall volume or frame size.
因此另一種一維式單層電容觸控面板的改良被提出，如圖8所示，其較圖6的具有更高的線性度，且可不改變控制軟板其中該一維式單層電容觸控面板係於一基板50’上同樣形成有複數並排的電極組51，惟各電極組51的電極對係包含有複數尖形狀電極單元511、512a、512b，如圖中例示，各電極對係包含有四個尖形狀電極單元511、512a/512b，而且同一電極的複數尖形狀電極單元511、512a/512b的寬端係於同側相互連接，再與原本控制軟板60”的訊號端子611電性連接，如此該控制軟板60”的訊號端子數量611即可維持而不增加，由於增加了各電極組51的電極單元數量，故線性度提升，且成本及元件體積亦得以控制。 Therefore, another improvement of the one-dimensional single-layer capacitive touch panel is proposed, as shown in FIG. 8, which has higher linearity than that of FIG. 6, and does not change the control soft board, wherein the one-dimensional single-layer capacitive touch The control panel is also formed with a plurality of electrode groups 51 arranged side by side on a substrate 50'. However, the electrode pairs of each electrode group 51 include a plurality of pointed electrode units 511, 512a, 512b, as illustrated in the figure, each electrode pair There are four pointed electrode units 511, 512a/512b, and the wide ends of the plurality of pointed electrode units 511, 512a/512b of the same electrode are connected to each other on the same side, and then the signal terminal 611 of the original control flexible board 60" is connected. The electrical connection is such that the number of signal terminals 611 of the control flexible board 60" can be maintained without increasing. Since the number of electrode units of each electrode group 51 is increased, the linearity is improved, and the cost and the component volume are also controlled.
然而，圖8所示的一維式單層電容觸控面板雖 具有較佳的線性度，但物件座標判斷上卻有誤差，深究其原因在於其為確保該控制軟板60”成本不因電極對的改良而大幅增加，故基板50’上遠離該控制軟板60”的一側的複數電極單元512a、512b的寬端相互連接，並以其中一電極單元512連接至訊號端子611，然而由於該基板50’上的各電極單元511、512a/512b均為ITO材質，因此對於未與訊號端子611直接連接的電極單元512a來說，其訊號傳輸路徑的等效電阻電容值會較同一電極的另一電極單元512b的等效電阻電容值為大，使得同一電極對的二組電極單元的總電阻電容值有顯著的差異。 However, the one-dimensional single-layer capacitive touch panel shown in FIG. 8 It has better linearity, but there is an error in the object coordinate judgment. The reason for the deepening is that it ensures that the cost of the control soft board 60" is not greatly increased by the improvement of the electrode pair, so the substrate 50' is far away from the control soft board. The wide ends of the plurality of electrode units 512a, 512b on one side of the 60" are connected to each other, and one of the electrode units 512 is connected to the signal terminal 611. However, since each of the electrode units 511, 512a/512b on the substrate 50' is ITO Material, so for the electrode unit 512a that is not directly connected to the signal terminal 611, the equivalent resistance capacitance value of the signal transmission path is larger than the equivalent resistance capacitance value of the other electrode unit 512b of the same electrode, so that the same electrode There is a significant difference in the total resistance and capacitance values of the two sets of electrode units.
請配合參閱圖9A所示，由於訊號端子輸出掃描訊號的期間係包含一充電時間TCH及一感應時間TS，其中充電時間TCH的設定係以各電極會進行充電開始至充電飽和時停止，接著進入感應時間TS才讀取其電容感應值S1、S2。雖然各電極對的二組電極單元511、512a/512b存在等效電阻電容值差異，但只要設定充電時間TS夠長，仍可順利讀取充電飽和時的電容感應值，如圖9B所示；但由於觸控面板易受雜訊干擾，若雜訊恰好出現在二組電極單元511、512a/512b充電時間時，則會影響到充電至飽和時間，而後續進入感應時間(t3)時，將讀取到二組均未充電飽合的電容電應量，且此二組均未充電飽合的電容電應量S1、S2不成比例關係，而容易造成物件座標的誤判。由於觸控面板最直接的雜訊來源來自於液晶面板的掃描訊號干擾，因此確實會容易有物件誤判的情況發生，有必要進一步提出解決的方案。 Referring to FIG. 9A, the period during which the signal terminal outputs the scan signal includes a charging time T CH and an inductive time T S , wherein the charging time T CH is set to stop when the electrodes start charging until the charging is saturated. Then, the sensing time S S is read before the capacitance sensing values S1 and S2 are read. Although the difference between the equivalent resistance and capacitance values exists in the two sets of electrode units 511 and 512a/512b of each electrode pair, as long as the set charging time T S is long enough, the capacitance sensing value at the time of charge saturation can be smoothly read, as shown in FIG. 9B. However, since the touch panel is susceptible to noise interference, if the noise occurs in the charging time of the two sets of electrode units 511, 512a/512b, the charging to saturation time will be affected, and when the subsequent induction time (t3) is reached, The capacitance of the capacitors that are not charged and saturated in the two groups will be read, and the capacitances S1 and S2 of the two groups that are not charged and saturated will be disproportionate, which may easily cause misjudgment of the coordinates of the object. Since the most direct source of noise of the touch panel comes from the scanning signal interference of the liquid crystal panel, it is easy to have a misjudgment of the object, and it is necessary to further propose a solution.
有鑑於上述一維式單層電容觸控面板的技術瓶頸，本創作的主要目的係提出一種兼具低成本且高抗雜訊功能的電容式觸控模組。 In view of the technical bottleneck of the above-mentioned one-dimensional single-layer capacitive touch panel, the main purpose of the present invention is to propose a capacitive touch module with low cost and high anti-noise function.
欲達上述目的所使用的主要技術手段係令該電容式觸控模組包含有：一基板，其一表面形成有複數平行排列的電極組，各電極組包含有一第一電極及一第二電極，其中該第一電極係包含有複數個第一電極單元，而該第二電極係包含複數個第二電極單元，各第一電極單元及各第二電極單元係包含有第一端及第二端，其中該第一電極單元係與該第一電極單元間隔交錯，各第一電極單元的第一端係與各第二電極單元的第二端同側，而各第一電極單元的第二端係與各第二電極單元的第一端同側；及一控制模組，係設置於該基板外側，並具有複數連接端子，以分別與各第一電極單元及各第二電極單元連接；又該複數連接端子中連接至相同第一電極之第一電極單元者係共同連接至一訊號接腳，而連接至相同第二電極之第二電極單元的連接端子係共同連接至另一訊號接腳。 The main technical means for achieving the above purpose is that the capacitive touch module comprises: a substrate, a surface of which is formed with a plurality of electrode groups arranged in parallel, each electrode group comprising a first electrode and a second electrode The first electrode unit includes a plurality of first electrode units, and the second electrode unit includes a plurality of second electrode units, each of the first electrode units and each of the second electrode units includes a first end and a second The first electrode unit is spaced apart from the first electrode unit, and the first end of each first electrode unit is on the same side as the second end of each second electrode unit, and the second electrode unit is second. The end of the second electrode unit is the same side of the first electrode; and a control module is disposed outside the substrate, and has a plurality of connection terminals for respectively connecting with the first electrode unit and each of the second electrode units; Further, the first electrode unit connected to the same first electrode of the plurality of connection terminals is commonly connected to one signal pin, and the connection terminals of the second electrode unit connected to the same second electrode are commonly connected to another Pin number.
上述本創作主要令該基板上各電極單元直接與該控制模組連接，再於控制模組上將相同電極的電極單元共同連接至對應的訊號接腳，如此本創作的控制模組的訊號接腳數量不必增加，而且由於各電極單元不必透過基板上的連接線而直接連接至該控制模組，使得各電極的等效電阻電容得以接近，縱使於充電時間出現雜訊干擾，所 讀取到的二組電容感應訊號的比例關係變化較小，相對減少物件誤判的機率；是以，本創作的電容式觸控模組確實兼具有低成本且高抗雜訊功能。 The above-mentioned creation mainly connects the electrode units on the substrate directly to the control module, and then connects the electrode units of the same electrode to the corresponding signal pins on the control module, so that the signal connection of the control module of the present invention is connected. The number of the legs does not have to be increased, and since the electrode units are not directly connected to the control module through the connection lines on the substrate, the equivalent resistance and capacitance of the electrodes are close, even if noise interference occurs during the charging time. The ratio of the two sets of capacitive sensing signals read has a small change, which reduces the probability of misjudgment of the object. Therefore, the capacitive touch module of the present invention has a low cost and high anti-noise function.
10‧‧‧基板 10‧‧‧Substrate
11‧‧‧電極組 11‧‧‧Electrode group
12a、12b‧‧‧第一電極單元 12a, 12b‧‧‧ first electrode unit
120‧‧‧尖形區 120‧‧‧ pointed area
121‧‧‧延伸區 121‧‧‧Extension
13a、13b‧‧‧第二電極單元 13a, 13b‧‧‧ second electrode unit
130‧‧‧尖形區 130‧‧‧ pointed area
131‧‧‧延伸區 131‧‧‧Extension
20‧‧‧控制模組 20‧‧‧Control Module
201‧‧‧軟性電路板 201‧‧‧Soft circuit board
21a、21b‧‧‧連接端子 21a, 21b‧‧‧ connection terminals
22a、22b‧‧‧連接線 22a, 22b‧‧‧ connecting lines
23a、23b‧‧‧訊號接腳 23a, 23b‧‧‧ signal pin
30‧‧‧控制器 30‧‧‧ Controller
圖1：係本創作電容式觸控模組第一較佳實施例的立體分解圖。 FIG. 1 is an exploded perspective view of a first preferred embodiment of the capacitive touch module of the present invention.
圖2：係本創作圖1的俯視平面圖。 Figure 2: is a top plan view of Figure 1 of the present invention.
圖3：係本創作電容式觸控模組第二較佳實施例的俯視平面圖。 3 is a top plan view of a second preferred embodiment of the present capacitive touch module.
圖4：係本創作電容式觸控模組第三較佳實施例的俯視平面圖。 4 is a top plan view of a third preferred embodiment of the present capacitive touch module.
圖5A：係本創作電容式觸控模組未受雜訊干擾的充電曲線圖。 FIG. 5A is a charging graph of the capacitive touch module of the present invention without interference from noise.
圖5B：係本創作電容式觸控模組受雜訊干擾的充電曲線圖。 FIG. 5B is a charging graph of the capacitive touch module of the present invention subjected to noise interference.
圖6：係既有一維單層電容式觸控面板的俯視圖。 Figure 6: Top view of a one-dimensional single-layer capacitive touch panel.
圖7：係既有另一維單層電容式觸控面板的俯視圖。 Figure 7 is a top plan view of another dimensional single layer capacitive touch panel.
圖8：係既有又一維單層電容式觸控面板的俯視圖。 Figure 8: A top view of a two-dimensional single-layer capacitive touch panel.
圖9A：係圖8一維單層電容式觸控面板未受雜訊干擾的充電曲線圖。 FIG. 9A is a charging graph of the one-dimensional single-layer capacitive touch panel of FIG. 8 without interference.
圖9B：係圖8一維單層電容式觸控面板受雜訊干擾的充電曲線圖。 FIG. 9B is a charging graph of the noise interference of the one-dimensional single-layer capacitive touch panel of FIG. 8 .
本創作係關於一種電容式觸控模組，請參閱圖1所示，該電容式觸控模組係主要包含有一基板10及一控制模組20，其中該控制模組20係設置於該基板10的一側，以掃描並檢測該基板上的物件及其位置。 The present invention relates to a capacitive touch module. As shown in FIG. 1 , the capacitive touch module mainly includes a substrate 10 and a control module 20 , wherein the control module 20 is disposed on the substrate. One side of 10 to scan and detect objects on the substrate and their locations.
請配合參閱圖2所示，上述基板10的其中一表面形成有複數平行排列的電極組11，各電極組11包含有一第一電極及一第二電極，其中該第一電極係包含有複數個第一電極單元12a、12b，而該第二電極係包含複數個第二電極單元13a、13b，各第一電極單元12a、12b及各第二電極單元13a、13b係包含有第一端及第二端，其中該第一電極單元12a、12b係與該第二電極單元13a、13b間隔交錯，因此各第一電極單元12a、12b的第一端係與各第二電極單元的第二端位於同一側，而各第一電極單元12a、12b的第二端係與各第二電極單元13a、13b的第一端則位於同另一側。於本實施例中，各第一及第二電極單元12a/12b、13a/13b係為對稱的錐形、三角形等尖形狀，加上相同電極組11的第一及第二電極單元12a/12b、13a/13b係相互間隔交錯，故第一電極單元12a、12b的第一端為寬端，而第二電極單元13a、13b的第二端為窄端則與第一電極單元12a、12b的第一端為寬端位在同一側；而第一電極單元12a、12b的第二端為窄端，與第二電極單元13a、13b的第一端為寬端共同位在相對另一側。此外，各第一及第二電極單元12a/12b、13a/13b亦可為長矩形或其它幾何圖形。 Referring to FIG. 2, one surface of the substrate 10 is formed with a plurality of electrode groups 11 arranged in parallel. Each electrode group 11 includes a first electrode and a second electrode, wherein the first electrode includes a plurality of The first electrode unit 12a, 12b, and the second electrode unit includes a plurality of second electrode units 13a, 13b, each of the first electrode units 12a, 12b and each of the second electrode units 13a, 13b includes a first end and a The two ends, wherein the first electrode units 12a, 12b are spaced apart from the second electrode units 13a, 13b, so that the first end of each of the first electrode units 12a, 12b is located at the second end of each second electrode unit On the same side, the second end of each of the first electrode units 12a, 12b and the first end of each of the second electrode units 13a, 13b are located on the same side. In this embodiment, each of the first and second electrode units 12a/12b, 13a/13b has a symmetrical tapered shape, a triangular shape, and the like, and the first and second electrode units 12a/12b of the same electrode group 11 are added. 13a/13b are interlaced with each other, so that the first ends of the first electrode units 12a, 12b are wide ends, and the second ends of the second electrode units 13a, 13b are narrow ends and the first electrode units 12a, 12b The first end has a wide end on the same side; and the second end of the first electrode unit 12a, 12b has a narrow end, and the first end of the second electrode unit 13a, 13b has a wide end co-located on the opposite side. In addition, each of the first and second electrode units 12a/12b, 13a/13b may also be a long rectangle or other geometric figure.
至於上述控制模組20則主要包含有一軟性電路板201及至少一控制器30。該軟性電路板201係包含有 複數連接端子21a、21b，具體而言，該軟性電路板201包含有與基板10上第一及第二電極單元12a/12b、13a/13b數量相同的連接端子21a、21b，令各第一及第二電極單元12a/12b、13a/13b可各自連接至該軟性電路板201所對應連接端子21a、21b。又該軟性電路板201上包含有複數連接線22a、22b，其中相同第一電極的第一電極單元12a、12b之連接端子21a係經由該連接線22a共同連接至該控制器30的相同訊號接腳23a，以及相同第二電極的第二極單元13a、13b之連接端子21b亦經由該連接線22b共同連接至該控制器30的相同訊號接腳23b。具體而言，該連接線22a、22b數量等於該控制器30的訊號接腳23a、23b數目，因此當各連接線22a、22b將連接至各第一或第二電極的第一或第二電極單元12a/12b、13a/13b的連接端子21a、21b相互連接後，即連接至該控制器30的訊號接腳21a、21b；是以，該控制器30的訊號端子21a、21b數量一樣對應基板10上複數電極對11的第一及第二電極數量。以圖2的例示來看，若基板10上形成有N個電極組，則第一及第二電極總數為2*N，本創作控制模組30的訊號接腳數量亦為2*N支，而為使各第一及第二電極單元12a/12b、13a/13b可分別地直接連接至該控制模組20的軟性電路板201，假設第一及第二電極單元12a/12b、13a/13b分別包含有k個第一電極單元12a、12b及k個第二電極單元13a、13b，則該軟性電路板201包含有2*k*N個連接端子21a、21b以及2*N條連接線22a、22b，以圖2所示，第一電極包含有二第一電極單元，故k=2，以圖4所示，第一電極包含有三 第一電極單元，故k=3。 The control module 20 mainly includes a flexible circuit board 201 and at least one controller 30. The flexible circuit board 201 includes The plurality of connection terminals 21a, 21b, specifically, the flexible circuit board 201 includes the same number of connection terminals 21a, 21b as the first and second electrode units 12a / 12b, 13a / 13b on the substrate 10, so that the first and The second electrode units 12a/12b, 13a/13b may be respectively connected to the corresponding connection terminals 21a, 21b of the flexible circuit board 201. Further, the flexible circuit board 201 includes a plurality of connection lines 22a and 22b, wherein the connection terminals 21a of the first electrode units 12a and 12b of the same first electrode are connected to the same signal connection of the controller 30 via the connection line 22a. The leg 23a and the connection terminal 21b of the second pole unit 13a, 13b of the same second electrode are also commonly connected to the same signal pin 23b of the controller 30 via the connection line 22b. Specifically, the number of the connecting wires 22a, 22b is equal to the number of the signal pins 23a, 23b of the controller 30, so that when the connecting wires 22a, 22b are to be connected to the first or second electrodes of the respective first or second electrodes The connection terminals 21a, 21b of the units 12a/12b, 13a/13b are connected to each other, that is, to the signal pins 21a, 21b of the controller 30; that is, the number of signal terminals 21a, 21b of the controller 30 corresponds to the substrate. 10 The number of first and second electrodes of the plurality of electrode pairs 11. As shown in the example of FIG. 2, if N electrode groups are formed on the substrate 10, the total number of the first and second electrodes is 2*N, and the number of signal pins of the authoring control module 30 is also 2*N. In order to enable the first and second electrode units 12a/12b, 13a/13b to be directly connected to the flexible circuit board 201 of the control module 20, respectively, the first and second electrode units 12a/12b, 13a/13b are assumed. Each of the k first electrode units 12a and 12b and the k second electrode units 13a and 13b respectively includes the 2*k*N connection terminals 21a and 21b and the 2*N connection lines 22a. 22b, as shown in FIG. 2, the first electrode includes two first electrode units, so k=2, as shown in FIG. 4, the first electrode includes three The first electrode unit, so k=3.
於本實施例中，該控制模組20係設置於近基板10上第一電極單元12a、12b第一端及第二電極單元13a、13b第二端的一側，因此各第一電極單元12a、12b第一端及第二電極單元13a、13b第二端即可直接與軟性電路板201的連接端子21a、21b電性連接。由於軟性電路板201會將連接至相同第一電極及第二電極的連接端子21a、21b分別共同連接，再與控制器30的對應訊號接腳23a、23b連接，因此如圖5A所示，當控制器30對第一電極及第二電極輸出訊號，因為該基板10上的第一電極及第二電極的第一及第二電極單元12a/12b、13a/13b各自連接至軟性電路板201的連接端子21a、21b，第一及第二電極的訊號傳送路徑的等效電阻電容即接近，而不會有太大的差異。 In this embodiment, the control module 20 is disposed on a side of the first electrode unit 12a, 12b on the near substrate 10 and the second end of the second electrode unit 13a, 13b, so that each of the first electrode units 12a, The second end of the 12b first end and the second electrode unit 13a, 13b can be directly electrically connected to the connection terminals 21a, 21b of the flexible circuit board 201. Since the flexible circuit board 201 connects the connection terminals 21a, 21b connected to the same first electrode and the second electrode, respectively, and is connected to the corresponding signal pins 23a, 23b of the controller 30, as shown in FIG. 5A, when The controller 30 outputs signals to the first electrode and the second electrode, because the first and second electrode units 12a/12b, 13a/13b of the first electrode and the second electrode on the substrate 10 are each connected to the flexible circuit board 201. The connection resistors 21a, 21b, the equivalent resistance capacitances of the signal transmission paths of the first and second electrodes are close, without much difference.
由於第一及第二電極的訊號傳送路徑的等效電阻電容接近，故其二充電曲線則如圖5A所示，在感應時間仍可讀取到幾乎接近的飽合電容感應量；再如圖5B所示，若於充電時間內出現雜訊，則第一及第二電極的電容感應量會於雜訊出現時下降，以LCM雜訊為例，LCM雜訊瞬間出現時會一同拉低第一及第二電極電容感應量，但於感應時間內乃會接近充電飽和，且保持比例關係。 Since the equivalent resistance and capacitance of the signal transmission paths of the first and second electrodes are close, the two charging curves are as shown in FIG. 5A, and the sensing capacitance of the saturation capacitance can be read almost at the sensing time; As shown in FIG. 5B, if noise occurs during the charging time, the capacitance of the first and second electrodes will decrease when the noise occurs. Taking LCM noise as an example, the LCM noise will be pulled down when the moment occurs. The first and second electrode capacitances are sensitive, but they are close to charge saturation during the sensing time and maintain a proportional relationship.
再如圖3所示，當控制模20設置於近第一電極單元12、12b的第一端及第二電極單元13a、13b的第二端一側，若各第一及第二電極單元12a/12b、13a/13b為尖形形狀，則第一電極單元12a、12b的寬端會連接至該軟性 電路板201的連接端子21a，而第二電極單元13a、13b的窄端會連接至該軟性電路板201的連接端子21b；又為使物件位在電容觸控模組的非可視區A仍可正確地反應出電容感應量，則第一電極單元12a、12b包含對應可視區A的尖形區120外，其該尖形區的寬端至連接端子21a的延伸區121雖對應非可視區B，但其寬度係與尖形區120較寬端寬度接近或相同；同理，第二電極單元13a、13b包含對應可視區A的尖形區130外，其尖形區130窄端至連接端子的延伸區131的寬度係與尖形區130較窄端寬度接近或相同，但較第一電極單元12a的延伸區121寬度為窄；是以，當物件觸碰到基板的非可視區B，仍保持第一及第二電極的電容感應量比例。再者，由於各第一及第二電極單元的延伸區121、131寬度不同，故軟性電路板201上與該延伸區121、131電性連接的連接端子21a、21b寬度亦依其延伸區121、131的寬窄而有寬窄設計。意即，連接第一電極單元12a、12b之延伸區121的連接端子21a較連接第二電極單元13a、13b之延伸區131的連接端子21b的寬度為寬。 As shown in FIG. 3, when the control die 20 is disposed on the first end of the first electrode unit 12, 12b and the second end side of the second electrode unit 13a, 13b, if each of the first and second electrode units 12a /12b, 13a/13b are pointed shapes, and the wide ends of the first electrode units 12a, 12b are connected to the softness The connection terminal 21a of the circuit board 201, and the narrow end of the second electrode unit 13a, 13b is connected to the connection terminal 21b of the flexible circuit board 201; and the object is located in the non-visible area A of the capacitive touch module. When the capacitive sensing amount is correctly reflected, the first electrode unit 12a, 12b includes the outside of the pointed region 120 corresponding to the visible area A, and the wide end of the pointed portion to the extending portion 121 of the connecting terminal 21a corresponds to the non-visible area B. However, the width thereof is close to or the same as the wider end width of the pointed region 120; similarly, the second electrode unit 13a, 13b includes the pointed portion 130 corresponding to the visible area A, and the narrow end of the pointed portion 130 is connected to the connecting terminal The width of the extension region 131 is close to or the same as the narrower end width of the pointed region 130, but narrower than the width of the extension portion 121 of the first electrode unit 12a; that is, when the object touches the non-visible area B of the substrate, The ratio of the capacitance sensing amount of the first and second electrodes is still maintained. Moreover, since the widths of the extension regions 121 and 131 of the first and second electrode units are different, the widths of the connection terminals 21a and 21b electrically connected to the extension regions 121 and 131 on the flexible circuit board 201 are also dependent on the extension region 121. The width of the 131 is wide and narrow. That is, the connection terminal 21a connecting the extension regions 121 of the first electrode units 12a, 12b is wider than the connection terminal 21b connecting the extension regions 131 of the second electrode units 13a, 13b.
綜上所述，本創作主要令該基板上各電極單元直接與該控制模組連接，再於控制模組上將相同電極的電極單元共同連接至對應的訊號接腳，如此本創作的控制模組的訊號接腳數量不必增加，而且由於各電極單元不必透過基板上的連接線而直接連接至該控制模組，使得各電極的等效電阻電容得以接近，縱使於充電時間出現雜訊干擾，所讀取到的二組電容感應訊號的比例關係變化較小， 相對減少物件誤判的機率；是以，本創作的電容式觸控模組確實兼具有低成本且高抗雜訊功能。 In summary, the present invention mainly connects the electrode units on the substrate directly to the control module, and then connects the electrode units of the same electrode to the corresponding signal pins on the control module, so that the control module of the present invention The number of signal pins of the group does not have to be increased, and since the electrode units are not directly connected to the control module through the connection lines on the substrate, the equivalent resistance and capacitance of the electrodes are close, even if noise interference occurs during the charging time. The proportional relationship between the two sets of capacitive sensing signals read is small, Relatively reduce the probability of misjudgment of objects; therefore, the capacitive touch module of the present invention has both low cost and high anti-noise function.
11‧‧‧電極組 11‧‧‧Electrode group
12a、12b‧‧‧第一電極單元 12a, 12b‧‧‧ first electrode unit
121‧‧‧延伸區 121‧‧‧Extension
13a、13b‧‧‧第二電極單元 13a, 13b‧‧‧ second electrode unit
130‧‧‧尖形區 130‧‧‧ pointed area
131‧‧‧延伸區 131‧‧‧Extension
20‧‧‧控制模組 20‧‧‧Control Module
201‧‧‧軟性電路板 201‧‧‧Soft circuit board
21a、21b‧‧‧連接端子 21a, 21b‧‧‧ connection terminals
22a、22b‧‧‧連接線 22a, 22b‧‧‧ connecting lines
23a、23b‧‧‧訊號接腳 23a, 23b‧‧‧ signal pin
30‧‧‧控制器 30‧‧‧ Controller
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| TWI560603B (en) * | 2013-04-18 | 2016-12-01 | Sharp Kk | |
| US11502114B2 (en) | 2019-08-20 | 2022-11-15 | Au Optronics Corporation | Display panel |
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| CN106775065A (en) * | 2016-11-28 | 2017-05-31 | 昆山国显光电有限公司 | A kind of contact panel |
| CN108897459B (en) * | 2018-08-31 | 2024-01-23 | 深圳和而泰智能控制股份有限公司 | Touch detection method of touch screen, touch capacitance, touch screen and electronic device |
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| TWI354227B (en) * | 2007-09-13 | 2011-12-11 | Chimei Innolux Corp | Projecting capacitive touch sensing device, displa |
| TW200945149A (en) * | 2008-04-16 | 2009-11-01 | Emerging Display Tech Corp | Wiring structure of capacitive touch panel |
| TWI543048B (en) * | 2009-05-15 | 2016-07-21 | 晨星半導體股份有限公司 | A sensor structure of a capacitive touch panel and the sensing method thereof |
| CN101943975B (en) * | 2009-07-09 | 2015-12-16 | 敦泰科技有限公司 | Ultra-thin mutual capacitance touch screen and combined ultra-thin touch screen |
| US8624870B2 (en) * | 2010-04-22 | 2014-01-07 | Maxim Integrated Products, Inc. | System for and method of transferring charge to convert capacitance to voltage for touchscreen controllers |
| TWM417612U (en) * | 2011-06-03 | 2011-12-01 | Sentelic Corp | Capacitance type touch control keyboard and touch control conduction structure thereof |
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