TWI559184B - Touch panel - Google Patents
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- TWI559184B TWI559184B TW103126485A TW103126485A TWI559184B TW I559184 B TWI559184 B TW I559184B TW 103126485 A TW103126485 A TW 103126485A TW 103126485 A TW103126485 A TW 103126485A TW I559184 B TWI559184 B TW I559184B
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Description
本發明係關於觸控技術，特別係關於觸控面板製程中對靜電放電(electrostatic discharge，簡稱ESD)的防護。 The invention relates to touch technology, in particular to the protection of electrostatic discharge (ESD) in the process of the touch panel.
觸控面板製程中和使用時靜電荷無可避免地可能累積或流竄於其上的任何導體。以第8圖為例，典型的觸控面板8包含基板80以及接地線81、多條驅動線89d(drive line)、多條掃描線89s(sensor line)等導體。驅動線89d與掃描線89s交叉設置於基板80的觸控區809上並連接至多個接合墊85(bonding pad，俗稱金手指)。接地線81設置於基板81上環繞觸控區809的週邊區，設置於驅動線89d間、掃描線89s間以及這兩者之間用於隔絕訊號的接地線則未繪示於第8圖。裝配完畢的觸控面板「系統」一般而言以機殼作為最終的接地端；接地線81的一端耦接諸接合墊85中的接合墊851a，另一端則耦接接合墊851b，需再串接於此機殼方形成迴路。然製程中觸控面板8尚未成為具機殼的系統時，單一接地線81如第8圖所示處於大阻抗的斷路態，靜電宣洩效果不佳。實務上可觀察到製程中產生的不良品有許多是接地線81對鄰近驅動線89d或掃描線89s反向放電造成的短路或斷路，好發於接地線81的尖角處或基板80連往機殼的收線部 (接合墊85)。 Any conductor that inevitably accumulates or flows on the touch panel process and during use. Taking FIG. 8 as an example, a typical touch panel 8 includes a substrate 80 and a ground line 81, a plurality of drive lines 89d (drive lines), and a plurality of scan lines 89s (sensor lines). The driving line 89d and the scanning line 89s are disposed on the touch area 809 of the substrate 80 and connected to a plurality of bonding pads 85 (commonly known as gold fingers). The grounding wire 81 is disposed on the substrate 81 to surround the peripheral area of the touch area 809. The grounding line for shielding the signal between the driving lines 89d and between the scanning lines 89s and between the two is not shown in FIG. The assembled touch panel "system" generally has a casing as the final grounding end; one end of the grounding wire 81 is coupled to the bonding pad 851a of the bonding pad 85, and the other end is coupled to the bonding pad 851b. Connected to the casing to form a loop. However, when the touch panel 8 has not yet become a system with a casing, the single grounding wire 81 is in a large-impedance disconnected state as shown in FIG. 8, and the electrostatic venting effect is not good. It can be observed in practice that many of the defective products generated in the process are short circuits or open circuits caused by the reverse discharge of the ground line 81 to the adjacent driving line 89d or the scanning line 89s, which occurs at the sharp corner of the grounding line 81 or the substrate 80 is connected to Retraction part of the casing (bonding pad 85).
本發明揭露一種觸控面板，其包含基板、第一接地線以及第二接地線。基板具有觸控區與環繞觸控區的週邊區。第一與第二接地線皆設置於週邊區但不電性連接。第一與第二接地線間的距離小於第一門檻值。在一實施例中，觸控面板更包含設置於基板上的多條功能線，而前述第一門檻值可定義為第一或第二接地線與任一功能線的最小距離。 The invention discloses a touch panel comprising a substrate, a first ground line and a second ground line. The substrate has a touch area and a peripheral area surrounding the touch area. The first and second ground lines are both disposed in the peripheral area but are not electrically connected. The distance between the first and second ground lines is less than the first threshold. In an embodiment, the touch panel further includes a plurality of function lines disposed on the substrate, and the first threshold value may be defined as a minimum distance between the first or second ground lines and any of the function lines.
基板可具有角部與邊部。在一實施例中，角部上第一或第二接地線與任一功能線間的距離大於第二門檻值。第二門檻值可定義為第一或第二接地線與任一該功能線間的最大距離。 The substrate may have corners and sides. In an embodiment, the distance between the first or second ground line on the corner and any of the functional lines is greater than the second threshold. The second threshold can be defined as the maximum distance between the first or second ground line and any of the functional lines.
在一實施例中，觸控面板更包含軟性電路板(flexible printed circuit board)。第四與第五接地線設置於軟性電路板上且不電性連接。第一與第二接地線分別電性連接第四與第五接地線。 In an embodiment, the touch panel further comprises a flexible printed circuit board. The fourth and fifth ground lines are disposed on the flexible circuit board and are not electrically connected. The first and second ground lines are electrically connected to the fourth and fifth ground lines, respectively.
由是，第一與第二接地線分別形成迴路，基板上兩者的配置誘使靜電荷於接地線間而非接地線與功能線間跳躍並損耗能量，從而保護功能線的完整。角部上兩接地線的設計有助於減少尖端放電。觸控面板裸片經軟性電路板最終耦接機殼；尚未耦接機殼成為系統時，由於兩接地迴路在軟性電路板上仍不電性連接，可避免製程中於收線部介電質損毀。 Therefore, the first and second ground lines respectively form a loop, and the arrangement of the two on the substrate induces static charge to jump between the ground lines instead of the ground line and the function line and lose energy, thereby protecting the integrity of the function line. The design of the two grounding wires on the corners helps to reduce tip discharge. The touch panel die is finally coupled to the chassis via the flexible circuit board; when the chassis is not coupled to the system, since the two ground loops are not electrically connected on the flexible circuit board, the dielectric in the wire-receiving portion of the process can be avoided. Damaged.
以上關於本發明內容及以下關於實施方式之說明係用以示範與闡明本發明之精神與原理，並提供對本發明之申請專 利範圍更進一步之解釋。 The above description of the present invention and the following description of the embodiments are intended to exemplify and clarify the spirit and principles of the present invention, and to provide an application for the present invention. The scope of the benefit is further explained.
1、1a、8‧‧‧觸控面板 1, 1a, 8‧‧‧ touch panel
10、10a、80‧‧‧基板 10, 10a, 80‧‧‧ substrates
100、102、104、107‧‧‧角部 100, 102, 104, 107‧‧‧ corner
101、103、106、108‧‧‧邊部 101, 103, 106, 108‧‧ ‧ side
105‧‧‧收線部 105‧‧‧Receiving Department
109、109a、809‧‧‧觸控區 109, 109a, 809‧‧ ‧ touch area
11、11a、11b、12、12a、12b、13、24、25、81‧‧‧接地線 11, 11a, 11b, 12, 12a, 12b, 13, 24, 25, 81‧‧‧ grounding wire
15、85‧‧‧多個接合墊 15, 85‧‧‧Multiple bond pads
151、152、159、159a、159b、159c、851a、851b‧‧‧接合墊 151, 152, 159, 159a, 159b, 159c, 851a, 851b‧‧‧ joint pads
19、19a、19b、19c‧‧‧功能線 19, 19a, 19b, 19c‧‧‧ functional lines
20‧‧‧軟性電路板 20‧‧‧Soft circuit board
89d‧‧‧多條驅動線 89d‧‧‧Multiple drive lines
89s‧‧‧多條掃描線 89s‧‧‧Multiple scan lines
d 1-d 3、d 6-d 9、d 2 '、d 9 '、d 9 "‧‧‧距離 d 1 - d 3 , d 6 - d 9 , d 2 ' , d 9 ' , d 9 " ‧ ‧ distance
w 1-w 3‧‧‧寬度 w 1 - w 3 ‧‧‧Width
第1圖所示係依據本發明一實施例的觸控面板。 FIG. 1 shows a touch panel according to an embodiment of the invention.
第2圖係本發明一實施例中基板的分區示意圖。 2 is a schematic view showing the division of a substrate in an embodiment of the present invention.
第3圖所示係本發明一實施例中基板角部與邊部的細節。 Figure 3 is a view showing details of the corners and sides of the substrate in an embodiment of the present invention.
第4與5圖所示係本發明諸實施例中基板邊部的細節。 Figures 4 and 5 show details of the sides of the substrate in the embodiments of the present invention.
第6圖所示係本發明一實施例中基板收線部的細節，並概示一軟性電路板。 Figure 6 is a view showing the details of the wire take-up portion of the substrate in an embodiment of the present invention, and a flexible circuit board.
第7圖所示係依據本發明一實施例的觸控面板。 Figure 7 shows a touch panel in accordance with an embodiment of the present invention.
第8圖所示係依據先前技術的觸控面板。 Figure 8 shows a touch panel according to the prior art.
以下在實施方式中敘述本發明之詳細特徵，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，且依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。以下實施例係進一步說明本發明之諸面向，但非以任何面向限制本發明之範疇。 The detailed features of the present invention are described in the following description, which is sufficient for any skilled person to understand the technical contents of the present invention and to implement it, and according to the contents disclosed in the specification, the patent application scope and the drawings, any familiarity The related objects and advantages of the present invention will be readily understood by those skilled in the art. The following examples are intended to further illustrate the invention, but are not intended to limit the scope of the invention.
請參見第1圖，所示係依據本發明一實施例的觸控面板1。在一實施態樣中，觸控面板1包含基板10、第一接地線11以及第二接地線12。基板10中央定義有觸控區109，係處控面板1作為輸出入介面與使用者互動之所在。基板10上非觸控區 109的部分概稱為基板10的週邊區，其寬度本發明不加限制；接地線11與12即設置於此週邊區。第1圖中基板10和觸控區109的形狀、尺寸、長寬比等僅為舉例；在此實施例中，接地線11環繞觸控區109，而接地線12在接地線11的外圍，復環繞接地線11。接地線11與12分別形成迴路，互不電性連接，亦即接地線11與12間沒有鋪設好的電流路徑。接地線11與12間的距離小於第一門檻值。接地線11與12間的距離可以指轉角處的d 1、平行處的d 2、或有其他合理的定義。(接地線11與12不一定有平行段。)一般而言d 1 d 2，但皆小於第一門檻值。 Referring to FIG. 1, there is shown a touch panel 1 according to an embodiment of the present invention. In one embodiment, the touch panel 1 includes a substrate 10 , a first ground line 11 , and a second ground line 12 . A touch area 109 is defined in the center of the substrate 10, and the control panel 1 functions as an input/output interface to interact with the user. The portion of the substrate 10 on which the non-touch area 109 is located is generally referred to as the peripheral area of the substrate 10. The width thereof is not limited in the present invention; the ground lines 11 and 12 are disposed in the peripheral area. The shape, size, aspect ratio, and the like of the substrate 10 and the touch area 109 in FIG. 1 are merely examples; in this embodiment, the ground line 11 surrounds the touch area 109, and the ground line 12 is on the periphery of the ground line 11. Repeat the grounding wire 11. The grounding wires 11 and 12 respectively form loops, which are not electrically connected to each other, that is, there is no current path laid between the grounding wires 11 and 12. The distance between the ground lines 11 and 12 is less than the first threshold value. The distance between the ground lines 11 and 12 may refer to d 1 at the corner, d 2 at the parallel, or other reasonable definition. (The grounding wires 11 and 12 do not necessarily have parallel segments.) In general, d 1 d 2 , but both are less than the first threshold.
在一實施例中，觸控面板1更包含多條功能線。功能線設置於基板10上，可以是觸控機制的驅動線、感應或掃描線(scan line)或跡線(trace line)。以所繪示的功能線19為例，其自觸控區109內延伸而出(在觸控區109內的部份未繪示)，沿基板10週邊區走線至多個接合墊15中的接合墊159。假設在多條功能線中功能線19是最靠近接地線11或12者，而內圈接地線11是最靠近任何功能線者，基板10上功能線與接地線的距離可以指轉角處的d 6、平行處的d 3或d 7、或有其他合理的定義。(功能線與接地線不一定有平行段。)在一實施例中，取功能線與接地線間的距離的最小值，如d 3或d 7，可得前述第一門檻值。換句話說，接地線11與12間的距離小於接地線11與功能線19間的最小距離，因此接地線11上的靜電荷傾向往接地線12而非功能線19跳躍。 In an embodiment, the touch panel 1 further includes a plurality of function lines. The function line is disposed on the substrate 10, and may be a driving line, a sensing or a scan line or a trace line of a touch mechanism. For example, the function line 19 is extended from the touch area 109 (not shown in the touch area 109), and is routed along the peripheral area of the substrate 10 to the plurality of bonding pads 15. Bonding pad 159. Assuming that the function line 19 is closest to the ground line 11 or 12 among the plurality of function lines, and the inner ring ground line 11 is closest to any function line, the distance between the function line and the ground line on the substrate 10 may refer to the d at the corner. 6. D 3 or d 7 in parallel, or have other reasonable definitions. (The functional line and the ground line do not necessarily have parallel sections.) In an embodiment, the minimum value of the distance between the function line and the ground line, such as d 3 or d 7 , is obtained. In other words, the distance between the ground lines 11 and 12 is smaller than the minimum distance between the ground line 11 and the function line 19, so the static charge on the ground line 11 tends to jump toward the ground line 12 instead of the function line 19.
值得注意的是，接地線11與12亦分別電性連接諸接合墊15中的接合墊151與152。透過接合墊151、152以及159，接地線11、12與功能線19得以在觸控面板1組裝為系統時耦接最終接地端(如機殼)或觸控機制的積體電路。第1圖中接地線12與接合墊152間的粗弧線表示此段線路係(立體地)跨過接地線11，保持接地線11與12互不電性連接。諸接合墊15中各接合墊一般而言尺寸相同、間距固定。在線路可能且合理的前提下，接合墊151、152與159可以分別是諸接合墊15中的任意一者。 It should be noted that the grounding wires 11 and 12 are also electrically connected to the bonding pads 151 and 152 in the bonding pads 15, respectively. Through the bonding pads 151, 152 and 159, the grounding wires 11, 12 and the functional wires 19 can be coupled to the integrated grounding terminal (such as the casing) or the integrated circuit of the touch mechanism when the touch panel 1 is assembled into a system. The thick arc between the grounding wire 12 and the bonding pad 152 in Fig. 1 indicates that the segment of the circuit (stereoscopically) spans the grounding wire 11 and keeps the grounding wires 11 and 12 electrically disconnected from each other. Each of the bond pads of the bond pads 15 is generally the same size and has a fixed pitch. The bonding pads 151, 152, and 159 may be any one of the bonding pads 15, respectively, on the premise that the wiring may be reasonable.
在一實施例中，包括功能線19的諸功能線以及接地線11和12的相對寬度沒有特殊限制。在另一實施例中，為達致更好的靜電防護，接地線11與12分別的寬度w 1、w 2(尤其後者)大於功能線19的寬度w 3，使接地線11上的靜電荷傾向往阻抗相對較低的接地線12而非功能線19跳躍。寬度w 1、w 2和w 3可以有任何合理的定義；舉例來說，寬度w 1可以是接地線11的平均寬度。 In an embodiment, the functional lines including the function line 19 and the relative widths of the ground lines 11 and 12 are not particularly limited. In another embodiment, to achieve better electrostatic protection, the widths w 1 , w 2 (especially the latter) of the ground lines 11 and 12, respectively, are greater than the width w 3 of the functional line 19 to cause an electrostatic charge on the ground line 11. It tends to jump toward the relatively low impedance ground line 12 instead of the functional line 19. The widths w 1 , w 2 and w 3 may have any reasonable definition; for example, the width w 1 may be the average width of the ground line 11.
為方便後續說明，概念上可將基板10分區，如第2圖所示。在此實施例中，除觸控區109外，基板10更具有角部100、102、104、107、邊部101、103、106、108以及收線部105。基板10的這些部101至108形成前述週邊區。前述多個接合墊15座落於收線部105。請注意第2圖中各區的相對大小與分界僅為舉例，功能線19、接地線11與12等則未繪示。 For ease of explanation, the substrate 10 can be conceptually partitioned as shown in FIG. In this embodiment, in addition to the touch area 109, the substrate 10 further has corner portions 100, 102, 104, 107, side portions 101, 103, 106, 108 and a wire take-up portion 105. These portions 101 to 108 of the substrate 10 form the aforementioned peripheral regions. The plurality of bonding pads 15 are seated on the wire take-up portion 105. Please note that the relative size and demarcation of each zone in Figure 2 are only examples, and the function line 19 and the grounding wires 11 and 12 are not shown.
請配合第2圖參見第3圖。第3圖所示係本發明一 實施例中角部102與邊部101、103的細節。在此實施例中，為減少角部102上尖端放電的產生，在轉角處接地線11與功能線19之間的距離為大於第二門檻值的距離d 6，其中第二門檻值取決於邊部101或103上接地線11與功能線19間的距離最大值，如d 3或d 7；也就是說，d 6>d 3或d 6>d 7。第3圖中接地線12係仿照接地線11設計；在其他實施例中，角部102上接地線12可保留直角並選擇性加寬，以進一步使得接地線11上的靜電荷在角部102跳躍至接地線12而非功能線19，同時強固接地線12在角部102上的線段，避免斷線。 Please refer to Figure 3 in conjunction with Figure 2. Figure 3 is a view showing details of the corner portion 102 and the side portions 101, 103 in an embodiment of the present invention. In this embodiment, to reduce the generation of tip discharge on the corner portion 102, the distance between the ground line 11 and the functional line 19 at the corner is a distance d 6 greater than the second threshold value, wherein the second threshold value depends on the edge The maximum distance between the ground line 11 and the function line 19 on the portion 101 or 103, such as d 3 or d 7 ; that is, d 6 > d 3 or d 6 > d 7 . In FIG. 3, the grounding wire 12 is designed in accordance with the grounding wire 11; in other embodiments, the grounding wire 12 on the corner portion 102 can be left at right angles and selectively widened to further cause static charge on the grounding wire 11 at the corner portion 102. Jumping to the ground line 12 instead of the functional line 19 while strengthening the line segment of the ground line 12 on the corner 102 avoids wire breakage.
在一實施例中，如第3圖所示，接地線11與12在轉角處係設計為圓弧走線，因此具有寬度的線路在邊緣不存在曲率無限大的尖點。換句話說，在一實施例中，功能線19、接地線11或12(的邊緣)上處處曲率小於某實數。該實數一般而言為正，而邊緣上的曲率可取原始值(如凹處為負)或絕對值。 In an embodiment, as shown in Fig. 3, the grounding wires 11 and 12 are designed as circular arcs at the corners, so that the lines having the width do not have sharp points with infinite curvature at the edges. In other words, in one embodiment, the curvature at (on the edge of) the functional line 19, the ground line 11 or 12 is less than a real number. The real number is generally positive, and the curvature on the edge can take the original value (eg, the recess is negative) or the absolute value.
在一實施例中，如第1或3圖所示，邊部101或103或其他邊部上接地線11與12平行，甚或亦與功能線19平行。請注意「平行」係用以描述功能線19、接地線11與12的大致走線方向。這些線路不一定處處等寬，其邊緣也不一定為直線。舉例而言，請參見第4圖，所示係本發明一實施例中邊部103的細節。在此實施例中，接地線11面對功能線19的邊緣為直線，因此兩線間距固定為d 3，但接地線11面對接地線12的邊緣呈波浪狀，人工地產生傾向跳躍至接地線12的靜電荷的多個匯集處。在此實 施例中，接地線12面對接地線11的邊緣亦呈波浪狀，人工地產生自接地線11跳躍而來的靜電荷的多個匯集處。接地線12面對接地線11的邊緣在幾何上不一定與接地線11面對接地線12的邊緣對應，本發明亦不限制「波浪」的頻率、振幅等，甚至不限制接地線11與12面對彼此的邊緣需採何種形狀。接地線11和接地線12舉例而言可利用微影蝕刻(photolithography)或印刷製程形成於觸控面板1上。根據第4圖的實施例，接地線11與12間的距離d 2 '(與走線方向的法線垂直)至少在邊部103上係可變，而d 2 '的變異數(variance)大於d 3的變異數(在此實施例中為0)。 In one embodiment, as shown in FIG. 1 or 3, the ground lines 11 and 12 on the sides 101 or 103 or other sides are parallel or even parallel to the functional line 19. Please note that "parallel" is used to describe the approximate direction of the line 19 and ground lines 11 and 12. These lines are not necessarily equally wide, and their edges are not necessarily straight lines. For example, please refer to Fig. 4, which shows details of the side portion 103 in an embodiment of the present invention. In this embodiment, the ground line 11 facing the edge line 19 is a straight line function, and therefore two fixed line spacing d 3, but the edge of the ground face of the ground line 11 of the wavy line 12, jump artificially tendency to ground Multiple collections of static charges of line 12. In this embodiment, the edge of the grounding wire 12 facing the grounding wire 11 is also wavy, artificially generating a plurality of locations of static charges that jump from the grounding wire 11. The edge of the grounding wire 12 facing the grounding wire 11 does not necessarily correspond geometrically to the edge of the grounding wire 11 facing the grounding wire 12. The present invention also does not limit the frequency, amplitude, etc. of the "wave", and does not even limit the grounding wires 11 and 12. What shape is required to face each other's edges. The ground line 11 and the ground line 12 can be formed on the touch panel 1 by, for example, photolithography or a printing process. According to the embodiment of Fig. 4, the distance d 2 ' between the ground lines 11 and 12 (perpendicular to the normal to the direction of the line) is variable at least on the side 103, and the variance of d 2 ' is greater than The number of variations of d 3 (0 in this embodiment).
為增強靜電宣洩效果，觸控面板1可包含更多的接地線，設置於接地線11與12之間，或設置於接地線12的外圍，復環繞接地線12。此額外接地線(第三接地線)與接地線11與12互不電性連接。當此額外接地線設置於接地線11與12之間時，顯然其與接地線11或12間的距離皆小於d 2。請配合第2圖參見第5圖，所示係本發明一實施例中邊部103的細節。當此額外接地線13設置於接地線12的外圍時，其與接地線12的距離d 8可等於或小於d 2，使接地線12上的靜電荷傾向跳躍至接地線13而非返回接地線11，或至少有相等的機會跳躍至接地線11或13。靜電荷在接地線11、12以及13間層層或反覆跳躍大幅損耗能量，從而使包括功能線19的諸功能線受到防護。接地線13的寬度、轉角走線以及邊緣設計請分別參見前文對第1、3與4圖的說明。 In order to enhance the electrostatic venting effect, the touch panel 1 may include more grounding wires, disposed between the grounding wires 11 and 12, or disposed at the periphery of the grounding wires 12, and surrounding the grounding wires 12. The additional ground line (the third ground line) and the ground lines 11 and 12 are not electrically connected to each other. When the additional ground line is disposed between the ground lines 11 and 12, it is apparent that the distance between it and the ground line 11 or 12 is less than d 2 . Please refer to Fig. 5 in conjunction with Fig. 2, which shows details of the side portion 103 in an embodiment of the present invention. When the additional ground line 13 is disposed on the periphery of the ground line 12, the distance d 8 from the ground line 12 may be equal to or less than d 2 , so that the static charge on the ground line 12 tends to jump to the ground line 13 instead of returning to the ground line. 11, or at least an equal opportunity to jump to the ground line 11 or 13. The static charge greatly depletes energy between the ground lines 11, 12 and 13 or repeatedly jumps, thereby protecting the functional lines including the functional lines 19. For the width of the grounding wire 13, the corner routing and the edge design, please refer to the descriptions of Figures 1, 3 and 4 above.
觸控面板1可包含軟性電路板，使接地線11與12等最終耦接系統接地端。請配合第2圖參見第6圖，所示係本發明一實施例中收線部105的細節，以及於多個接合墊15電性且立體連接接地線11與12等的軟性電路板20。接地線25(第五接地線)與接地線24(第四接地線)設置於軟性電路板20上且互不電性連接。接地線25於接合墊152電性連接接地線12；接地線24於接合墊151電性連接接地線11。在此實施例中，基板10上設置有功能線19a、19b以及19c，分別於諸接合墊15中的接合墊159a、159b以及159c電性連接軟性電路板上的線路。在此實施例中，諸接合墊15於收線部105係設置於功能線19a、19b、19c與接地線11、12之間。接地線11、12、25、24和功能線19a、19b、19c的寬度以及彼此的距離請參見前文對第1圖的說明。 The touch panel 1 can include a flexible circuit board such that the ground lines 11 and 12 and the like are finally coupled to the system ground. Referring to FIG. 6, FIG. 6 shows a detail of the wire take-up portion 105 in an embodiment of the present invention, and a flexible circuit board 20 electrically and three-dimensionally connected to the ground wires 11 and 12, and the like. The ground line 25 (fifth ground line) and the ground line 24 (fourth ground line) are disposed on the flexible circuit board 20 and are not electrically connected to each other. The grounding wire 25 is electrically connected to the grounding wire 12 at the bonding pad 152; the grounding wire 24 is electrically connected to the grounding wire 11 at the bonding pad 151. In this embodiment, the substrate 10 is provided with functional wires 19a, 19b, and 19c, and the bonding pads 159a, 159b, and 159c in the bonding pads 15 are electrically connected to the wiring on the flexible circuit board. In this embodiment, the bonding pads 15 are disposed between the functional wires 19a, 19b, and 19c and the grounding wires 11, 12 at the wire take-up portion 105. The widths of the grounding wires 11, 12, 25, 24 and the functional wires 19a, 19b, 19c and the distance from each other can be referred to the description of Fig. 1 above.
如前所述，接地線11與24電性連接形成第一迴路，接地線12與25電性連接形成第二迴路。此二迴路無論在基板10上或軟性電路板上20皆不電性連接，直到觸控面板1組裝為系統才有共同的最終接地端，因此製程中可確保靜電放電係在此二迴路，尤其是接地線11與12之間，而不致破壞軟性電路板20和基板10上的諸功能線。 As described above, the grounding wires 11 and 24 are electrically connected to form a first loop, and the grounding wires 12 and 25 are electrically connected to form a second loop. The two circuits are not electrically connected on the substrate 10 or the flexible circuit board 20 until the touch panel 1 is assembled into a system to have a common final ground end. Therefore, the electrostatic discharge is ensured in the second circuit, especially It is between the ground lines 11 and 12 without damaging the functional lines on the flexible circuit board 20 and the substrate 10.
本發明中接地線不一定完全環繞基板。請配合第1圖參見第7圖，所示係依據本發明一實施例的觸控面板1a。與觸控面板1類似，觸控面板1a包含基板10a，其中央定義有觸控區109a。觸控面板1a更包含設置於基板10a的週邊區、各自形成迴 路的接地線11a、12a、11b以及12b。具體而言，接地線11a與11b分設於基板10a週邊區的相對兩側，兩者共同大致環繞基板10a。接地線12b設置於接地線11b的內圍；接地線12a設置於接地線11a的內圍，因此如第7圖所示在基板10a週邊區形成等效四圈的接地線，由內至外的間距以d 9、d 9 '和d 9 "表示。在一實施例中，d 9小於第一門檻值，而d 9 d 9 ' d 9 "。請注意第7圖中接地線11a、12a、11b以及12b的形狀與配置僅為舉例。 In the present invention, the ground line does not necessarily completely surround the substrate. Referring to FIG. 7 in conjunction with FIG. 1, there is shown a touch panel 1a according to an embodiment of the present invention. Similar to the touch panel 1, the touch panel 1a includes a substrate 10a having a touch area 109a defined in the center thereof. The touch panel 1a further includes ground lines 11a, 12a, 11b, and 12b which are disposed in the peripheral region of the substrate 10a and each form a loop. Specifically, the grounding wires 11a and 11b are disposed on opposite sides of the peripheral region of the substrate 10a, and the two substantially surround the substrate 10a. The grounding wire 12b is disposed on the inner circumference of the grounding wire 11b; the grounding wire 12a is disposed on the inner circumference of the grounding wire 11a, so that an equivalent four-turn grounding wire is formed in the peripheral region of the substrate 10a as shown in Fig. 7, from the inside to the outside. The spacing is represented by d 9 , d 9 ' and d 9 " . In one embodiment, d 9 is less than the first threshold and d 9 d 9 ' d 9 " . Note that the shape and configuration of the grounding wires 11a, 12a, 11b, and 12b in Fig. 7 are merely examples.
綜上所述，本發明於觸控面板的基板週邊區設置兩個以上的接地線迴路，誘使靜電荷在接地線間而非接地線與功能線間跳躍並損耗能量，從而保護功能線的完整。角部上接地線可與功能線拉開距離、採圓弧走線或增加寬度，以減少尖端放電或至少更有效地因應其破壞性。觸控面板裸片經軟性電路板耦接最終接地端，上述迴路分別耦接軟性電路板上互不電性連接的延伸接地線。觸控面板尚未組裝為系統時，由於諸接地迴路在軟性電路板上仍不電性連接，可避免製程中基板上收線部的介電質損毀。 In summary, the present invention provides more than two grounding circuit loops in the peripheral area of the substrate of the touch panel, which induces static charges to jump between the grounding lines instead of the grounding lines and the functional lines, thereby consuming energy, thereby protecting the functional lines. complete. The grounding wire on the corner can be pulled away from the functional line, arced or increased in width to reduce tip discharge or at least more effectively respond to its destructiveness. The touch panel die is coupled to the final ground end via a flexible circuit board, and the loops are respectively coupled to the extended ground lines of the flexible circuit board that are not electrically connected. When the touch panel is not assembled into a system, since the ground loops are not electrically connected on the flexible circuit board, the dielectric damage of the wire take-up portion on the substrate during the process can be avoided.
雖然本發明以前述之實施例揭露如上，然其並非用以限定本發明。在不脫離本發明之精神和範圍內，所為之更動與潤飾，均屬本發明之專利保護範圍。關於本發明所界定之保護範圍請參考所附之申請專利範圍。 Although the present invention has been disclosed above in the foregoing embodiments, it is not intended to limit the invention. It is within the scope of the invention to be modified and modified without departing from the spirit and scope of the invention. Please refer to the attached patent application for the scope of protection defined by the present invention.
1‧‧‧觸控面板 1‧‧‧ touch panel
10‧‧‧基板 10‧‧‧Substrate
109‧‧‧觸控區 109‧‧‧ touch area
11、12‧‧‧接地線 11, 12‧‧‧ Grounding wire
15‧‧‧多個接合墊 15‧‧‧Multiple bond pads
151、152、159‧‧‧接合墊 151, 152, 159‧‧‧ joint pads
19‧‧‧功能線 19‧‧‧ functional line
d 1-d 3、d 6、d 7‧‧‧距離 d 1 - d 3 , d 6 , d 7 ‧‧‧ distance
w 1-w 3‧‧‧寬度 w 1 - w 3 ‧‧‧Width
Claims (10)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| TW103126485A TWI559184B (en) | 2014-08-01 | 2014-08-01 | Touch panel |
| CN201410481794.8A CN104216566B (en) | 2014-08-01 | 2014-09-19 | Touch panel |
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| TW103126485A TWI559184B (en) | 2014-08-01 | 2014-08-01 | Touch panel |
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| TW201606580A TW201606580A (en) | 2016-02-16 |
| TWI559184B true TWI559184B (en) | 2016-11-21 |
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| CN106155397B (en) * | 2015-04-22 | 2019-03-22 | 南京瀚宇彩欣科技有限责任公司 | The electrostatic protection structure of circuitry substrate |
| CN106055167B (en) * | 2016-07-19 | 2020-09-04 | 深圳市骏达光电股份有限公司 | Conducting film circuit structure and touch screen with same |
| CN108513523B (en) * | 2018-03-30 | 2020-12-22 | 信利半导体有限公司 | Antistatic failure device for display device |
| CN109036140A (en) | 2018-08-29 | 2018-12-18 | 京东方科技集团股份有限公司 | Display panel and preparation method thereof, display device |
| CN114203039A (en) * | 2021-12-02 | 2022-03-18 | 昆山国显光电有限公司 | Display panel and display device |
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| KR101282469B1 (en) * | 2011-06-01 | 2013-07-04 | 삼성디스플레이 주식회사 | Touch Screen Panel |
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| CN104866126B (en) * | 2014-02-25 | 2018-08-07 | 宸鸿科技(厦门)有限公司 | Touch panel |
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| TW200949636A (en) * | 2008-05-16 | 2009-12-01 | Mildex Optical Inc | A touch-control panel with an anti-static electricity function |
| CN103838415A (en) * | 2012-11-24 | 2014-06-04 | 宝宸（厦门）光学科技有限公司 | Flexible touch panel structure and manufacture method thereof |
| TW201426474A (en) * | 2012-12-26 | 2014-07-01 | Hannstouch Solution Inc | Touch panel |
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