TWI791169B - Touch panel device - Google Patents

Abstract

An objective of the present invention is to maintain or improve the accuracy of touch position detection in touch panels. A touch panel device of the present invention includes: a detection area composed of a pair of a transmission electrode and a reception electrode; a transmission wiring which is connected to the transmission electrode and extends in a first direction from a connection part with the detection area; and a receiving wiring which is connected to the reception electrode; when one of a plurality of the detection areas is set as a reference unit, one or more detection areas are at least continuously arranged from the reference unit in the opposite direction of the first direction; in addition, on a second direction side orthogonal to the first direction with respect to the reference unit, the transmission wiring which is connected to the reference unit, and one or more transmission wirings corresponding to one or more of the detection areas that are arranged in the opposite direction from the reference unit are arranged in parallel; and the one or more transmission wirings arranged in parallel have a uniform wiring width at a part extending in the opposite direction from the position where the transmission wrings are arranged in the second direction with respect to the reference unit.

Description

觸控面板裝置 touch panel device

本發明係關於一種觸控面板裝置，尤其關於一種觸控面板之配線構造的技術。 The present invention relates to a touch panel device, in particular to a technology of wiring structure of a touch panel.

關於觸控面板已知有各種技術，在下述專利文獻1中，已揭示一種同時進行二組(一對傳送信號線與一對接收信號線)信號線(電極)的偵測(sensing)而進行觸控操作位置的檢測，從而提升解析度的偵測技術。 Various technologies are known for touch panels. In the following patent document 1, a method of simultaneously performing two sets of (a pair of transmission signal lines and a pair of reception signal lines) signal lines (electrodes) detection (sensing) is disclosed. Detection of touch operation position, thereby improving the detection technology of resolution.

此外，在下述專利文獻2中，已揭示一種構成為在X、Y方向的電極配線中不設置電極交叉之部分之所謂的單層(single layer)電極構造。 In addition, Patent Document 2 below discloses a so-called single layer electrode structure in which no intersecting portion of electrodes is provided in electrode wiring in the X and Y directions.

[先前技術文獻] [Prior Art Literature]

[專利文獻] [Patent Document]

專利文獻1：日本特開2014-219961號公報 Patent Document 1: Japanese Patent Laid-Open No. 2014-219961

專利文獻2：日本特開2010-182277號公報 Patent Document 2: Japanese Patent Laid-Open No. 2010-182277

在觸控面板中，維持或提升觸控位置檢測精確度乙事至為重要。以靜電電容方式之觸控面板的情形而言，在掃描時，檢測來自與源於觸控面板所導致之電容變化相應之信號線之信號電壓的變化或差分，藉此檢出觸控操作的位置。此時，觸控面板中的配線構造，有時會影響來自與電容變化相應之信號線之信號電壓之變化或差分的檢測精確度。 In touch panels, it is very important to maintain or improve the accuracy of touch position detection. In the case of a capacitive touch panel, during scanning, the change or difference of the signal voltage from the signal line corresponding to the capacitance change caused by the touch panel is detected, thereby detecting the touch operation. Location. At this time, the wiring structure in the touch panel may affect the detection accuracy of the change or difference of the signal voltage from the signal line corresponding to the capacitance change.

因此，在本發明中，其目的為藉由配線設計的巧思以維持或提升觸控面板中之觸控位置檢測精確度。 Therefore, in the present invention, the purpose is to maintain or improve the detection accuracy of the touch position in the touch panel through the ingenuity of the wiring design.

本發明的觸控面板裝置係具備：檢測區域，係由一對傳送電極與接收電極所構成；傳送配線，係連接於前述傳送電極，且從與前述檢測區域連接的連接部分朝第一方向延伸設置；及接收配線，係連接於前述接收電極；在以複數個前述檢測區域中之一個檢測區域為基準單元(cell)時，至少從前述基準單元朝前述第一方向的相反方向連續地配置有一個或複數個前述檢測區域，且相對於前述基準單元在與前述第一方向正交的第二方向側上並列配置有：連接於前述基準單元的傳送配線、及對應於比前述基準單元更朝前述相反方向配置的一個或複數個前述檢測區域之一條或複數條傳送配線；前述並列配置的一條或複數條傳送配線之比相對於前述基準單元排列於前述第二方向的位置更朝前述相反方向延伸設置之部分的配線寬度為均等者。 The touch panel device of the present invention includes: a detection area composed of a pair of transmission electrodes and a reception electrode; a transmission wiring connected to the transmission electrodes and extending in a first direction from a connection portion connected to the detection area. setting; and receiving wiring, connected to the aforementioned receiving electrodes; when one of the plurality of aforementioned detection areas is used as a reference cell (cell), at least from the aforementioned reference cell toward the opposite direction of the aforementioned first direction, there are continuously arranged One or a plurality of the aforementioned detection areas are arranged side by side with respect to the aforementioned reference unit on the side of the second direction perpendicular to the aforementioned first direction: a transmission line connected to the aforementioned reference unit; One or a plurality of transmission wires of one or a plurality of the aforementioned detection areas arranged in the opposite direction; the ratio of the one or a plurality of the aforementioned transmission wires arranged in parallel is closer to the aforementioned opposite direction than the position of the aforementioned reference unit arranged in the aforementioned second direction The wiring width of the extended part is equal.

藉此，相對於基準單元朝第二方向配置之傳送配線的配線寬度、與相對於比基準單元更位於第一方向之相反方向的檢測區域更朝第二方向配置之傳送配線的配線寬度即成為均等者。 Thereby, the wiring width of the transmission wiring arranged in the second direction with respect to the reference cell and the wiring width of the transmission wiring arranged in the second direction with respect to the detection region located in the opposite direction to the first direction than the reference cell are equal to equals.

在上述之本發明的觸控面板裝置中，可考慮前述基準單元為作為靜電電容之重心值檢測之基準的檢測區域50。 In the touch panel device of the present invention described above, the reference unit may be considered to be the detection region 50 as a reference for detecting the center of gravity value of the electrostatic capacitance.

在觸控位置的檢測中，係以藉由檢測靜電電容的重心值從而可檢測出檢測區域之密度以上之解析度的位置之方式進行，茲假設成為該重心值之檢測之基準的檢測區域作為在此所稱的基準單元。 The detection of the touch position is performed by detecting the center of gravity value of the electrostatic capacitance so that a position with a resolution higher than the density of the detection area can be detected, and the detection area that becomes the basis for detection of the center of gravity value is assumed to be referred to here as the reference unit.

在上述之本發明的觸控面板裝置中，可考慮前述基準單元為作為以使傳送配線的電阻值成為預定之值之方式規定從前述基準單元朝向前述相反方向之傳送配線的配線寬度時之基準的檢測區域。 In the touch panel device of the present invention described above, the reference unit can be considered as a reference when specifying the wiring width of the transmission wiring from the reference unit to the opposite direction so that the resistance value of the transmission wiring becomes a predetermined value. detection area.

藉此，針對並列配置的一條或複數條傳送配線，以使傳送配線的電阻值成為預定之值之方式，設定比相對於基準單元排列於第二方向的位置更朝第一方向之相反方向延伸設置之部分的配線寬度，。 Thereby, for one or a plurality of transmission lines arranged in parallel, the resistance value of the transmission lines is set to be a predetermined value, and the position extending in the direction opposite to the first direction relative to the reference cells arranged in the second direction is set. The wiring width of the part set,.

在上述之本發明的觸控面板裝置中，可考慮前述並列配置之一條或複數條傳送配線的配線寬度為均等者。 In the touch panel device of the present invention described above, it is conceivable that the wiring widths of one or a plurality of transmission wirings arranged in parallel are equal.

藉此，比相對於基準單元排列於第二方向的位置更朝與第一方向為相反方向延伸設置之部分的配線寬度、與比相對於基準單元排列於第二方向之位置更朝第一方向延伸設置之部分之傳送配線的配線寬度即成為相同者。 Thereby, the wiring width of the portion extending in the direction opposite to the first direction from the position arranged in the second direction with respect to the reference cells is further in the first direction than the position arranged in the second direction with respect to the reference cells. The wiring width of the transmission wiring of the extended part becomes the same.

在上述之本發明的觸控面板裝置中，可考慮檢測區域之前述傳送電極之配線鄰接部中的電極寬度，比鄰接之傳送配線的配線寬度更大。 In the touch panel device of the present invention described above, it is conceivable that the electrode width in the wiring adjacent portion of the transmission electrode in the detection region is larger than the wiring width of the adjacent transmission wiring.

亦即，鄰接於傳送電極之配線鄰接部之傳送配線的比相對於基準單元排列於第二方向的位置更朝第一方向之相反方向延伸設置之部分的配線寬度，係比傳送電極之配線鄰接部中的電極寬度更窄。 That is, the wiring width of the portion of the transmission wiring adjacent to the wiring adjacent portion of the transfer electrode extending in the direction opposite to the first direction than the position of the reference cell arranged in the second direction is greater than that of the wiring adjacent to the transfer electrode. The electrode width in the section is narrower.

在上述之本發明的觸控面板裝置中，可考慮前述並列配置的一條或複數條傳送配線，係被設為其配線電阻值成為150kΩ以下之值的配線寬度。 In the touch panel device of the present invention described above, it is conceivable that the one or a plurality of transmission lines arranged in parallel are set to have a line width such that the line resistance value thereof becomes a value of 150 kΩ or less.

亦即，針對並列配置的一條或複數條傳送配線，設定比相對於基準單元排列於第二方向的位置更朝第一方向之相反方向延伸之部分的配線寬度，以使傳送配線的電阻值成為150kΩ以下的值。 That is, for one or a plurality of transmission lines arranged in parallel, the line width of the part extending in the direction opposite to the first direction than the position of the reference cell arrayed in the second direction is set so that the resistance value of the transmission line becomes Values below 150kΩ.

在上述之本發明的觸控面板裝置中，可考慮在前述傳送配線的第二方向側以相鄰之方式配置接地電極。藉此，傳送配線之第二方向側上的殘留電荷藉由接地電極而放電。 In the touch panel device of the present invention described above, it is conceivable to arrange the ground electrode adjacent to the second direction side of the transmission wiring. By this, the residual charge on the second direction side of the transfer wiring is discharged through the ground electrode.

依據本發明，可維持或提升觸控面板中的觸控位置檢測精確度。 According to the present invention, the detection accuracy of the touch position in the touch panel can be maintained or improved.

1:觸控面板裝置 1: Touch panel device

2:觸控面板 2: Touch panel

3:觸控面板驅動裝置 3: Touch panel driver

4:感測器IC 4: Sensor IC

5:MCU 5: MCU

6:製品側MCU 6: Product side MCU

21,21-1~21-n:傳送信號線 21,21-1~21-n: transmission signal line

22,22-1~22-m:接收信號線 22,22-1~22-m: receiving signal line

31:觸控面板側連接端子 31: Touch panel side connection terminal

32:製品側連接端子 32: Connecting terminal on the product side

41:傳送電路 41: Transmission circuit

42:接收電路 42: Receive circuit

43:多工器 43: Multiplexer

44:介面暫存器電路 44:Interface register circuit

45:電源電路 45: Power circuit

50,50A:檢測區域 50,50A: detection area

51:傳送電極 51: Transmission electrode

51a:第一ㄈ字形部 51a: the first ㄈ-shaped part

51b:第一突出部 51b: first protrusion

51c:第二突出部 51c: second protrusion

51d:配線鄰接部 51d: Wiring adjacent part

51e:上端部 51e: upper end

51f:下端部 51f: lower end

52:接收電極 52: Receive electrode

52a:第二ㄈ字形部 52a: the second ㄈ-shaped part

52b:第三突出部 52b: third protrusion

52c:第四突出部 52c: Fourth protrusion

52d:下端部 52d: lower end

52e:上端部 52e: upper end

60:虛設電極群 60:Dummy electrode group

70a~70e,70A~70E:傳送配線 70a~70e, 70A~70E: transmission wiring

71:端部 71: end

80:接收配線 80: Receive wiring

90,93:剩餘區域 90,93: remaining area

100:基板 100: Substrate

110:感測器單元 110: sensor unit

110a~110e,100A~100E,110X,110Y,110Z:感測器單元 110a~110e, 100A~100E, 110X, 110Y, 110Z: sensor unit

120,120X,120Y:感測器單元群 120, 120X, 120Y: sensor unit group

411,412:驅動器 411, 412: drive

421:比較器 421: Comparator

422:基準電容部 422: Reference Capacitance Department

423:開關 423: switch

424:測量用電容部 424: Capacitance part for measurement

425:開關 425: switch

426:演算控制部 426: Calculation Control Department

A1,A2:位置 A1, A2: position

AVCC,AVCC1,AVCC2:驅動電壓 AVCC, AVCC1, AVCC2: drive voltage

C22,C23,C32,C33:電容 C22, C23, C32, C33: capacitance

L1,L2,L3,L5,L6,L7:配線寬度 L1, L2, L3, L5, L6, L7: wiring width

L4,L8:電極寬度 L4, L8: electrode width

R+,R-:接收信號 R+, R-: receive signal

Ta,Ti:端子 Ta, Ti: terminal

T+,T-:傳送信號 T+, T-: transmit signal

圖1係本發明之實施型態之觸控面板裝置的方塊圖。 FIG. 1 is a block diagram of a touch panel device according to an embodiment of the present invention.

圖2係實施型態之觸控面板之信號線構造的說明圖。 Fig. 2 is an explanatory diagram of the signal line structure of the touch panel of the embodiment.

圖3係實施型態之偵測動作的說明圖。 Fig. 3 is an explanatory diagram of the detection operation of the implementation type.

圖4係實施型態之單層構造的說明圖。 Fig. 4 is an explanatory diagram of a single-layer structure of an embodiment.

圖5係實施型態之感測器單元(sensor cell)構造的說明圖。 Fig. 5 is an explanatory diagram of the structure of a sensor cell of the embodiment.

圖6係實施型態之感測器單元構造之比較例的說明圖。 Fig. 6 is an explanatory diagram of a comparative example of the sensor unit structure of the embodiment.

圖7係實施型態之配線設計之比較例的說明圖。 Fig. 7 is an explanatory diagram of a comparative example of the wiring design of the embodiment.

圖8係實施型態之配線設計之比較例的部分放大圖。 Fig. 8 is a partially enlarged view of a comparative example of the wiring design of the embodiment.

圖9係實施型態之配線設計之比較例的部分放大圖。 Fig. 9 is a partially enlarged view of a comparative example of wiring design of the embodiment.

圖10係實施型態之配線設計的說明圖。 Fig. 10 is an explanatory diagram of the wiring design of the embodiment.

圖11係實施型態之配線設計的部分放大圖。 Fig. 11 is a partially enlarged view of the wiring design of the embodiment.

圖12係實施型態之配線設計的部分放大圖。 Fig. 12 is a partially enlarged view of the wiring design of the embodiment.

圖13係實施型態之感測器單元構造之變形例的說明圖。 Fig. 13 is an explanatory diagram of a modified example of the sensor unit structure of the embodiment.

以下依下列順序來說明實施型態。另外，關於曾經說明的構成，之後係附上相同符號且省略說明。 Embodiments are described below in the following order. In addition, about the structure demonstrated previously, the same code|symbol is attached|subjected hereafter, and description is abbreviate|omitted.

<1、觸控面板裝置的構成> <1. Configuration of touch panel device>

<2、偵測動作> <2. Detect motion>

<3、單層構造> <3. Single layer structure>

<4、觸控面板的配線設計> <4. Wiring design of touch panel>

[4-1、傳送配線之配線設計的比較例] [4-1. Comparison example of wiring design for transmission wiring]

[4-2、本實施型態中之傳送配線的配線設計] [4-2. Wiring design of transmission wiring in this embodiment]

<5、變形例> <5. Modifications>

<6、總結> <6. Summary>

<1、觸控面板裝置的構成> <1. Configuration of touch panel device>

圖1係顯示實施型態之觸控面板裝置1的構成例。 FIG. 1 shows a configuration example of a touch panel device 1 according to an embodiment.

觸控面板裝置1係在各種機器中被裝設作為使用者介面(user interface)裝置。在此，各種機器係設想例如為電子機器、通信機器、資訊 處理裝置、製造設備機器、工作機械、車輛、航空器、建築設備機器、及其他極為多樣之領域的機器。觸控面板裝置1係在此等多樣的機器製品中被採用作為用於使用者之操作輸入的操作輸入元件(device)。 The touch panel device 1 is installed in various machines as a user interface device. Here, various machines are assumed to be, for example, electronic machines, communication machines, information Processing equipment, manufacturing equipment machines, work machines, vehicles, aircraft, construction equipment machines, and machines in other extremely diverse fields. The touch panel device 1 is adopted as an operation input device (device) for user's operation input in these various machine products.

在圖1中雖顯示了觸控面板裝置1和製品側MCU(Micro Control Unit，微控制單元)6，但所謂製品側MCU 6，係顯示供裝設觸控面板裝置1之機器中的控制裝置者。觸控面板裝置1係進行對於製品側MCU 6供給使用者之觸控面板操作之資訊之動作。 Although a touch panel device 1 and a product-side MCU (Micro Control Unit, micro control unit) 6 are shown in FIG. By. The touch panel device 1 performs an operation of supplying the product-side MCU 6 with information for the user's touch panel operation.

觸控面板裝置1係具有觸控面板2、及觸控面板驅動裝置3。 The touch panel device 1 has a touch panel 2 and a touch panel driving device 3 .

觸控面板驅動裝置3係具有感測器IC(Intergrated Circuit，積體電路)4、及MCU 5。 The touch panel driving device 3 includes a sensor IC (Integrated Circuit, integrated circuit) 4 and an MCU 5 .

此觸控面板驅動裝置3係經由觸控面板側連接端子31而與觸控面板2連接。觸控面板驅動裝置3係經由此連接而進行觸控面板2的驅動(偵測)。 This touch panel driving device 3 is connected to the touch panel 2 via the touch panel side connection terminal 31 . The touch panel driving device 3 drives (detects) the touch panel 2 through this connection.

此外，在作為操作輸入元件搭載於機器時，觸控面板驅動裝置3係經由製品側連接端子32而與製品側MCU 6連接。觸控面板驅動裝置3係藉由此連接而將偵測到的操作資訊傳送至製品側MCU 6。 In addition, when mounted on a device as an operation input device, the touch panel drive device 3 is connected to the product-side MCU 6 via the product-side connection terminal 32 . The touch panel driving device 3 transmits the detected operation information to the product-side MCU 6 through this connection.

觸控面板驅動裝置3中之感測器IC 4係具有傳送電路41、接收電路42、多工器(multiplexor)43、介面暫存器(interface register)電路44、及電源電路45。 The sensor IC 4 in the touch panel driving device 3 has a transmission circuit 41 , a reception circuit 42 , a multiplexer (multiplexor) 43 , an interface register circuit 44 , and a power supply circuit 45 .

感測器IC 4的傳送電路41係對於由多工器43所選擇之觸控面板2中的端子輸出傳送信號。此外，接收電路42係從由多工器43所選擇之觸控面板2中的端子接收信號，進行所需要的比較處理等。 The transmission circuit 41 of the sensor IC 4 outputs a transmission signal to a terminal in the touch panel 2 selected by the multiplexer 43 . In addition, the receiving circuit 42 receives signals from terminals in the touch panel 2 selected by the multiplexer 43 , and performs required comparison processing and the like.

圖2係顯示傳送電路41、接收電路42、多工器43和觸控面板2之連接狀態的示意圖。 FIG. 2 is a schematic diagram showing the connection state of the transmission circuit 41 , the reception circuit 42 , the multiplexer 43 and the touch panel 2 .

觸控面板2係在形成觸控面的面板平面上配設有作為傳送側之電極的n條傳送信號線21-1至21-n。 The touch panel 2 is provided with n transmission signal lines 21 - 1 to 21 - n serving as electrodes on the transmission side on the panel plane forming the touch surface.

此外，同樣地在面板平面上配設有作為接收側之電極的m條接收信號線22-1至22-m。 In addition, m receiving signal lines 22-1 to 22-m as electrodes on the receiving side are arranged on the panel plane in the same manner.

另外，當未特別區別傳送信號線21-1．．．21-n、接收信號線22-1．．．22-m時，係統稱為「傳送信號線21」、「接收信號線22」來表示。 In addition, when the transmission signal line 21-1. ． ． 21-n. Receiving signal line 22-1. ． ． 22-m, the system is called "transmission signal line 21" and "reception signal line 22".

傳送信號線21-1．．．21-n、和接收信號線22-1．．．22-m係有如圖所示交叉地配設的情形，亦有如以下之實施型態所述配設成不使交叉產生，以作為所謂單層構造的情形。不論是何種情形，都是成為在配設傳送信號線21和接收信號線22的範圍內形成觸控操作面，並藉由觸控操作時的電容變化而檢測操作位置的構造。 Transmission signal line 21-1. ． ． 21-n, and receiving signal line 22-1. ． ． The 22-m series may be arranged to cross as shown in the figure, or may be arranged so as not to cause crossing as described in the following embodiments, so as to have a so-called single-layer structure. In either case, the touch operation surface is formed in the range where the transmission signal line 21 and the reception signal line 22 are arranged, and the operation position is detected by capacitance change during touch operation.

圖中雖僅例示一部分在傳送信號線21與接收信號線22之間所產生的靜電電容(電容C22、C23、C32、C33)，但在觸控操作面的整體中存在有於傳送信號線21與接收信號線22之間所產生的靜電電容(例如交叉位置中的電容)，而藉由接收電路42以檢測出因為觸控操作而產生電容變化的位置。 Although only a part of the electrostatic capacitance (capacitance C22, C23, C32, C33) generated between the transmission signal line 21 and the reception signal line 22 is illustrated in the figure, the entire touch operation surface exists in the transmission signal line 21. The electrostatic capacitance generated between the signal line 22 and the receiving signal line 22 (for example, the capacitance at the intersection position), and the receiving circuit 42 can detect the position where the capacitance changes due to the touch operation.

傳送電路41係對於由多工器43所選擇的傳送信號線21-1．．．21-n輸出傳送信號。在本實施型態中，係進行由多工器43於各時序(timing)選擇各二條鄰接之傳送信號線21進行的掃描。 The transmission circuit 41 is for the transmission signal line 21-1 selected by the multiplexer 43. ． ． 21-n outputs a transmission signal. In this embodiment, scanning is performed by selecting two adjacent transmission signal lines 21 at each timing by the multiplexer 43 .

接收電路42係接收來自由多工器43所選擇之接收信號線22-1．．．22-m的接收信號。在本實施型態中，係由多工器43於各時序選擇各二條鄰接的接收信號線22。 The receiving circuit 42 receives signals from the receiving signal line 22-1 selected by the multiplexer 43. ． ． 22-m received signal. In this embodiment, the multiplexer 43 selects two adjacent receiving signal lines 22 at each timing.

關於傳送電路41、接收電路42所進行的偵測動作將於後說明。 The detection operations performed by the transmitting circuit 41 and the receiving circuit 42 will be described later.

返回圖1進行說明。在感測器IC 4的介面暫存器電路44中，係被MCU 5寫入有對於傳送電路41、多工器43、接收電路42、電源電路45的各種設定資訊。傳送電路41、多工器43、接收電路42、電源電路45係分別藉由記憶於介面暫存器電路44中的設定資訊而控制動作。 Return to Figure 1 for illustration. In the interface register circuit 44 of the sensor IC 4 , various setting information for the transmission circuit 41 , the multiplexer 43 , the reception circuit 42 , and the power supply circuit 45 are written by the MCU 5 . The transmission circuit 41 , the multiplexer 43 , the receiving circuit 42 , and the power supply circuit 45 are respectively controlled by setting information stored in the interface register circuit 44 .

此外，在介面暫存器電路44中，係構成為記憶由接收電路42所檢測出的檢測值(說明中亦稱為「RAW值」)，且可供MCU 5取得。 In addition, the interface register circuit 44 is configured to memorize the detection value detected by the receiving circuit 42 (also referred to as “raw value” in the description), and can be obtained by the MCU 5 .

電源電路45係產生驅動電壓AVCC，且供給至傳送電路41、接收電路42。雖將於後述，但傳送電路41係將使用了驅動電壓AVCC的脈衝施加於由多工器43所選擇的傳送信號線21。 The power supply circuit 45 generates the drive voltage AVCC, and supplies it to the transmission circuit 41 and the reception circuit 42 . Although it will be described later, the transmission circuit 41 applies a pulse using the driving voltage AVCC to the transmission signal line 21 selected by the multiplexer 43 .

此外，接收電路42亦在偵測動作時，進行對於由多工器43選擇的接收信號線22施加驅動電壓AVCC。 In addition, the receiving circuit 42 also applies the drive voltage AVCC to the receiving signal line 22 selected by the multiplexer 43 during the detection operation.

關於電源電路45的構成將於後說明。 The configuration of the power supply circuit 45 will be described later.

MCU 5係進行感測器IC 4的設定、控制。具體而言，MCU 5係對於介面暫存器電路44寫入所需的設定資訊，從而控制感測器IC 4之各部的動作。 The MCU 5 sets and controls the sensor IC 4 . Specifically, the MCU 5 writes required setting information into the interface register circuit 44 to control the operations of various parts of the sensor IC 4 .

此外，MCU 5係藉由從介面暫存器電路44讀取以取得來自接收電路42的RAW值。再者，MCU 5係使用RAW值而算出重心值，且進行根據 所算出之重心值的座標計算，及進行將作為使用者之觸控操作位置資訊的座標值傳送至製品側MCU 6的處理。 In addition, the MCU 5 obtains the RAW value from the receiving circuit 42 by reading from the interface register circuit 44 . Furthermore, the MCU 5 calculates the center of gravity value using the RAW value, and performs the calculation based on Coordinate calculation of the calculated center-of-gravity value, and processing of transmitting the coordinate value as the user's touch operation position information to the MCU 6 on the product side are performed.

<2、偵測動作> <2. Detect motion>

茲說明以上之構成之觸控面板裝置1所進行的偵測動作。 The detection operation performed by the touch panel device 1 having the above configuration will be described here.

首先藉由圖3來說明傳送電路41、接收電路42對於觸控面板2的動作。 Firstly, the operation of the transmission circuit 41 and the reception circuit 42 on the touch panel 2 will be described with reference to FIG. 3 .

在圖中，於觸控面板2中顯示有二條傳送信號線21-2、21-3、和二條接收信號線22-2、22-3。 In the figure, two transmission signal lines 21 - 2 , 21 - 3 and two reception signal lines 22 - 2 , 22 - 3 are displayed on the touch panel 2 .

以本實施型態之情形而言，針對先前之圖2所示之傳送信號線21、接收信號線22，由傳送電路41和接收電路42分別以鄰接的各二條進行傳送、接收，從而進行觸控操作的檢測。換言之，以一對傳送信號線21和一對接收信號線22的二條×二條作為基本單元，依序以單元單位進行檢測掃描。在圖3中，係顯示其一個單元部分。 In the case of this embodiment, for the transmission signal line 21 and the reception signal line 22 shown in FIG. control operation detection. In other words, two×two of a pair of transmission signal lines 21 and a pair of reception signal lines 22 are used as a basic unit, and the detection scan is sequentially performed in units of units. In Fig. 3, a unit portion thereof is shown.

傳送電路41係對於二條傳送信號線21(在圖中為21-2、21-3)，從驅動器(driver)411、412輸出驅動電壓AVCC1。換言之，屬於驅動器411、412之輸出的傳送信號T+、T-被供給至由多工器43所選擇的傳送信號線21-2、21-3。 The transmission circuit 41 outputs a drive voltage AVCC1 from drivers 411 and 412 to two transmission signal lines 21 (21-2 and 21-3 in the figure). In other words, the transfer signals T+, T− belonging to the outputs of the drivers 411 , 412 are supplied to the transfer signal lines 21 - 2 , 21 - 3 selected by the multiplexer 43 .

另外，驅動電壓AVCC1係圖1之電源電路45所產生之驅動電壓AVCC本身、或根據驅動電壓AVCC的電壓。 In addition, the driving voltage AVCC1 is the driving voltage AVCC itself generated by the power supply circuit 45 of FIG. 1 or a voltage based on the driving voltage AVCC.

此時，傳送電路41之來自驅動器411的傳送信號T+係如圖所示，將閒置(Idle)期間設為低位準(low level)(以下稱為「L位準」)。例如設為0V。 At this time, the transmission signal T+ from the driver 411 of the transmission circuit 41 is set to a low level (hereinafter referred to as "L level") during an idle period as shown in the figure. For example, set it to 0V.

再者，於接下來的運行(Active)期間係設為高位準(high level)(以下稱為「H位準」)。此時，具體而言，係進行驅動電壓AVCC1的施加作為H位準的信號。 Furthermore, it is set to a high level (hereinafter referred to as "H level") during the next active period. At this time, specifically, the driving voltage AVCC1 is applied as a signal at the H level.

此外，傳送電路41之來自另一個驅動器412的傳送信號T-，係將閒置期間設為H位準(驅動電壓AVCC1的施加)，接下來的運行期間設為L位準。 In addition, the transfer signal T- from another driver 412 of the transfer circuit 41 is set to the H level during the idle period (application of the drive voltage AVCC1 ), and to the L level during the subsequent operation period.

在此，閒置期間係使接收信號R+、R-之電位穩定的期間，運行期間係偵測接收信號R+、R-之電位變化的期間。 Here, the idle period is a period for stabilizing the potentials of the reception signals R+, R−, and the operation period is a period for detecting changes in the potentials of the reception signals R+, R−.

在此閒置期間、運行期間中，接收電路42係接收來自由多工器43所選擇之二條接收信號線22(圖中為22-3、22-2)的接收信號R+、R-。 During the idle period and the running period, the receiving circuit 42 receives the receiving signals R+, R− from the two receiving signal lines 22 (22-3, 22-2 in the figure) selected by the multiplexer 43.

接收電路42係具備有比較器(comparator)421、基準電容部422、開關(switch)423、425、測量用電容部424、及演算控制部426。 The receiving circuit 42 includes a comparator 421 , a reference capacitance unit 422 , switches 423 and 425 , a measurement capacitance unit 424 , and an arithmetic control unit 426 .

來自二條接收信號線22的接收信號R+、R-係被比較器421所接收。比較器421係比較接收信號R+、R-的電位，且將其比較結果以H位準或L位準輸出至演算控制部426。 The received signals R+, R− from the two received signal lines 22 are received by the comparator 421 . The comparator 421 compares the potentials of the received signals R+ and R−, and outputs the comparison result to the calculation control unit 426 at H level or L level.

在構成基準電容部422之電容器的一端，係施加有驅動電壓AVCC2。驅動電壓AVCC2係圖1之電源電路45所產生的驅動電壓AVCC本身，或是根據驅動電壓AVCC的電壓。構成基準電容部422之電容器的另一端係經由開關423的端子Ta而連接於比較器421的+輸入端子。 A driving voltage AVCC2 is applied to one end of the capacitor constituting the reference capacitance unit 422 . The driving voltage AVCC2 is the driving voltage AVCC itself generated by the power supply circuit 45 in FIG. 1 , or a voltage based on the driving voltage AVCC. The other end of the capacitor constituting the reference capacitance unit 422 is connected to the + input terminal of the comparator 421 via the terminal Ta of the switch 423 .

此外，在測量用電容部424的一端，係施加有驅動電壓AVCC2。此測量用電容部424的另一端係經由開關425的端子而連接於比較器421的-輸入端子。 In addition, a drive voltage AVCC2 is applied to one end of the measurement capacitor unit 424 . The other end of the measurement capacitor 424 is connected to the -input terminal of the comparator 421 via the terminal of the switch 425 .

開關423、425於閒置期間係選擇端子Ti。因此，在閒置期間係接地連接比較器421的+輸入端子(接收信號線22-3)、-輸入端子(接收信號線22-2)，接收信號R+、R-成為接地電位。 The switches 423 and 425 select the terminal Ti during idle periods. Therefore, the +input terminal (reception signal line 22-3) and -input terminal (reception signal line 22-2) of the comparator 421 are connected to ground during the idle period, and the reception signals R+ and R- are at ground potential.

開關423、425於運行期間係選擇端子Ta。因此在運行期間係對於比較器421的+輸入端子(接收信號線22-3)、-輸入端子(接收信號線22-2)施加驅動電壓AVCC2。 The switches 423, 425 select the terminal Ta during operation. Therefore, the driving voltage AVCC2 is applied to the +input terminal (reception signal line 22-3) and -input terminal (reception signal line 22-2) of the comparator 421 during operation.

在圖3中係以實線顯示該單元為非觸控狀態時之接收信號R+、R-的波形。在閒置期間中，由於開關423、425選擇了端子Ti，從而接收信號R+、R-在某電位(接地電位)穩定。 In FIG. 3 , the waveforms of the received signals R+ and R− when the unit is in the non-touch state are shown by solid lines. During the idle period, since the terminals Ti are selected by the switches 423 and 425, the received signals R+ and R− are stabilized at a certain potential (ground potential).

當成為運行期間時，開關423、425選擇端子Ta，從而對於接收信號線22-3、22-2施加驅動電壓AVCC2。藉此，接收信號R+、R-的電位上升△V。在非觸控的狀態下，此△V的電位上升，係與接收信號R+、R-一同產生。 During the operation period, the switches 423 and 425 select the terminal Ta to apply the drive voltage AVCC2 to the reception signal lines 22-3 and 22-2. As a result, the potentials of the reception signals R+ and R− rise by ΔV. In the non-touch state, the potential rise of △V is generated together with the received signals R+ and R−.

另一方面，在傳送電路41側，係當成為運行期間時，傳送信號T+如上所述地上升，傳送信號T-下降。藉此，當有觸控操作時，接收信號R+、R-之電位上升的程度發生變化。 On the other hand, on the side of the transmission circuit 41, during the operation period, the transmission signal T+ rises and the transmission signal T- falls as described above. Thereby, when there is a touch operation, the degree of potential rise of the received signals R+ and R− changes.

假設對於電容C22造成影響的A1位置被觸控時，接收信號R-的電位在運行期間中如虛線所示上升△VH。 Assume that when the position A1 that affects the capacitor C22 is touched, the potential of the received signal R− increases by ΔVH as shown by the dotted line during the running period.

此外，假設電容C32變化的A2位置被觸控時，接收信號R-的電位在運行期間中上升虛線所示的△VL。 In addition, assuming that the position A2 where the capacitor C32 changes is touched, the potential of the received signal R− increases by ΔVL shown by the dotted line during the operation period.

如此等所示依據對於該單元的觸控操作位置，接收信號R-的電位變化量會比接收信號R+的電位變化量(△V)更大或更小。 As shown in the above, depending on the position of the touch operation of the unit, the potential variation of the received signal R− will be larger or smaller than the potential variation (ΔV) of the received signal R+.

比較器421係將此接收信號R+、R-進行比較。 The comparator 421 compares the received signals R+ and R−.

另外，亦可設為將如此變化之接收信號R+、R-的電位差分本身作為RAW值(檢測結果)予以輸出，但在本實施型態中，係設為接收電路42由演算控制部426進行測量用電容部424的設定變更以使接收信號R+、R-的電壓平衡得以維持，以取得RAW值。 In addition, it is also possible to output the potential difference itself of the received signal R+ and R- which changes in this way as a RAW value (detection result), but in this embodiment, it is assumed that the receiving circuit 42 is operated by the calculation control unit 426. The setting of the measurement capacitor 424 is changed so that the voltage balance of the received signals R+ and R− is maintained, and the RAW value is obtained.

演算控制部426係依據被寫入於介面暫存器電路44的設定資訊，而進行開關423、425的接通(on)/關斷(off)或測量用電容部424之電容值的切換處理。此外，監視比較器421的輸出，且在後述的處理中算出RAW值。經由演算控制部426所算出的RAW值，係被寫入於介面暫存器電路44從而可供MCU 5取得。 The calculation control unit 426 performs on/off of the switches 423 and 425 or switches the capacitance value of the measuring capacitor unit 424 according to the setting information written in the interface register circuit 44 . In addition, the output of the comparator 421 is monitored, and the RAW value is calculated in the processing described later. The RAW value calculated by the arithmetic control unit 426 is written into the interface register circuit 44 so that the MCU 5 can obtain it.

<3、觸控面板的電極配置構造> <3. Electrode Arrangement Structure of Touch Panel>

茲參照圖4及圖5來說明本實施型態中之觸控面板2的電極配置構造。在本實施型態中，係採用單層電極構造以作為觸控面板2的電極配置構造。圖4係顯示觸控面板2之電極配置構造的示意圖。 The electrode arrangement structure of the touch panel 2 in this embodiment will be described with reference to FIG. 4 and FIG. 5 . In this embodiment, a single-layer electrode structure is adopted as the electrode arrangement structure of the touch panel 2 . FIG. 4 is a schematic diagram showing the electrode arrangement structure of the touch panel 2 .

以下，將圖4所示之方式設為上下左右方向進行說明。在圖5至圖12中亦復相同。另外，本發明之請求項中的第一方向係顯示下方向、第一方向的相反方向係顯示上方向、第二方向係顯示右方向、第二方向之相反方向係顯示左方向。 Hereinafter, the form shown in FIG. 4 will be described as the up, down, left, and right directions. The same is repeated in FIGS. 5 to 12 . In addition, in the claims of the present invention, the first direction indicates the downward direction, the opposite direction of the first direction indicates the upward direction, the second direction indicates the right direction, and the opposite direction of the second direction indicates the left direction.

如圖4所示，在觸控面板2中，係於基板100上配置有複數個感測器單元110，且構成感測器圖案(sensor pattern)作為集合矩陣(matrix)。在圖4中，為了便於圖示，係顯示了在基板100上形成有左右方向7列而且上下方向7行的感測器單元110的集合矩陣之例。 As shown in FIG. 4 , in the touch panel 2 , a plurality of sensor units 110 are disposed on the substrate 100 and form a sensor pattern as a matrix. In FIG. 4 , for convenience of illustration, an example of an aggregate matrix of sensor units 110 formed on a substrate 100 with seven columns in the left-right direction and seven rows in the vertical direction is shown.

藉由配置於基板100上之感測器單元110之靜電電容的變化，可檢測出手指等導電體所接觸的位置。在此，一個感測器單元110係相當於圖2之傳送信號線21與接收信號線22所交叉的部分。 The position touched by a conductor such as a finger can be detected by the change of the capacitance of the sensor unit 110 disposed on the substrate 100 . Here, one sensor unit 110 is equivalent to the intersection of the transmission signal line 21 and the reception signal line 22 in FIG. 2 .

另外，在本實施型態中為了便於說明，雖將感測器單元110的配置設為左右方向7列而且上下方向7行的矩陣進行了說明，但感測器單元110的配置，係可依據觸控面板2之形狀或大小予以多樣地設計。 In addition, in this embodiment, for the convenience of description, although the arrangement of the sensor units 110 is described as a matrix with 7 columns in the left and right direction and 7 rows in the up and down direction, the arrangement of the sensor units 110 can be based on The shape and size of the touch panel 2 are designed in various ways.

圖5係顯示配置於基板100上之感測器單元110之構造的一例。在本實施型態中，係使用感測器單元110X進行說明。另外，為了便於理解，圖示之各構件的間隔係記載為比實際更大。 FIG. 5 shows an example of the structure of the sensor unit 110 disposed on the substrate 100 . In this embodiment, the sensor unit 110X is used for illustration. In addition, for the sake of easy understanding, the intervals between the respective members shown in the drawings are described larger than actual ones.

感測器單元110X係具有檢測區域50、虛設(dummy)電極群60、複數條傳送配線70、接收配線80、剩餘區域90。 The sensor unit 110X has a detection area 50 , a dummy electrode group 60 , a plurality of transmission lines 70 , a reception line 80 , and a remaining area 90 .

在檢測區域50中，係鄰接配置有傳送電極51和接收電極52。 In the detection area 50, the transmission electrode 51 and the reception electrode 52 are arrange|positioned adjacently.

傳送電極51係具有第一ㄈ字形部51a、第一突出部51b、第二突出部51c、及配線鄰接部51d。 The transfer electrode 51 has a first U-shaped portion 51a, a first protruding portion 51b, a second protruding portion 51c, and a wiring adjacent portion 51d.

第一ㄈ字形部51a係形成為右側開口的ㄈ字形，第一突出部51b係以從第一ㄈ字形部51a之上端部51e朝下方向突出之方式形成。第二突出部51c係隔開地設於第一突出部51b的左側，且以從第一ㄈ字形部51a朝下 方向突出之方式形成。配線鄰接部51d係以從第一ㄈ字形部51a之下端部51f朝上方向突出之方式形成。在配線鄰接部51d的右側係鄰接地配置有傳送配線70，在配線鄰接部51d與傳送配線70之間係設有間隙。 The first U-shaped portion 51a is formed in a U-shape opened on the right side, and the first protruding portion 51b is formed so as to protrude downward from the upper end portion 51e of the first U-shaped portion 51a. The second protruding portion 51c is spaced apart from the left side of the first protruding portion 51b, and faces downward from the first U-shaped portion 51a. Formed in a prominent way. The wiring adjacent portion 51d is formed to protrude upward from the lower end portion 51f of the first U-shaped portion 51a. The transmission wiring 70 is adjacently arranged on the right side of the wiring adjacent portion 51 d , and a gap is provided between the wiring adjacent portion 51 d and the transmission wiring 70 .

接收電極52係具有第二ㄈ字形部52a、第三突出部52b、及第四突出部52c。 The receiving electrode 52 has a second U-shaped portion 52a, a third protruding portion 52b, and a fourth protruding portion 52c.

第二ㄈ字形部52a係形成為左側開口的ㄈ字形，第三突出部52b係以從第二ㄈ字形部52a的下端部52d朝上方向突出之方式形成。第四突出部52c係隔開地設於第三突出部52b的右側，且以從第二ㄈ字形部52a朝上方向突出之方式形成。 The second U-shaped portion 52a is formed in a U-shape opened on the left side, and the third protruding portion 52b is formed so as to protrude upward from the lower end portion 52d of the second U-shaped portion 52a. The fourth protruding portion 52c is spaced apart on the right side of the third protruding portion 52b, and is formed to protrude upward from the second U-shaped portion 52a.

傳送電極51和接收電極52係從第三突出部52b朝右方向依第二突出部51c、第四突出部52c、第一突出部51b的順序並列配置。藉此，傳送電極51和接收電極52係於平面上形成一層而且為梳形形狀。 The transmission electrode 51 and the reception electrode 52 are arranged in parallel in the order of the second protrusion 51c, the fourth protrusion 52c, and the first protrusion 51b in the right direction from the third protrusion 52b. Thereby, the transmitting electrode 51 and the receiving electrode 52 are formed in one layer on a plane and have a comb shape.

此外，在傳送電極51與接收電極52的鄰接部分，係分別設有間隙。結果，會在傳送電極51與接收電極52之間產生靜電電容。 In addition, gaps are respectively provided in adjacent portions of the transmitting electrode 51 and the receiving electrode 52 . As a result, electrostatic capacitance is generated between the transmission electrode 51 and the reception electrode 52 .

在檢測區域50之下部的空餘區域中，係考慮光學上的美觀而配置有虛設電極群60。虛設電極群60係由彼此分離的複數個虛設電極所構成。 In an empty area below the detection area 50, a dummy electrode group 60 is arranged in consideration of an optical appearance. The dummy electrode group 60 is composed of a plurality of dummy electrodes separated from each other.

虛設電極群60係在各虛設電極未與驅動電路等電壓源電性連接的狀態而且未連接於接地等的浮動狀態下形成圖案。 The dummy electrode group 60 is patterned in a floating state where each dummy electrode is not electrically connected to a voltage source such as a driving circuit and is not connected to a ground or the like.

虛設電極群60係以與檢測區域50、傳送配線70、接收配線80分離之方式配置。 The dummy electrode group 60 is arranged so as to be separated from the detection region 50 , the transmission line 70 , and the reception line 80 .

傳送配線70係傳送電極51的一部分，相當於圖2所示之傳送信號線21。傳送配線70係以鄰接於檢測區域50之右側之方式配置，傳送配線70的端部71係與第一ㄈ字形部51a的下端部51f接線(參照圖5)。 The transmission line 70 is a part of the transmission electrode 51 and corresponds to the transmission signal line 21 shown in FIG. 2 . The transmission wiring 70 is arranged adjacent to the right side of the detection area 50, and the end 71 of the transmission wiring 70 is connected to the lower end 51f of the first U-shaped portion 51a (see FIG. 5 ).

傳送配線70係在圖4所示之基板100上之集合矩陣的各列中，依上下方向的各感測器單元110被拉出。各傳送配線70係朝向下方向延伸，且以彼此分離之方式並列配置(參照圖5)。 The transmission wiring 70 is pulled out from each sensor unit 110 in the vertical direction in each column of the aggregate matrix on the substrate 100 shown in FIG. 4 . The respective transmission lines 70 extend downward and are arranged in parallel so as to be separated from each other (see FIG. 5 ).

在各列之下端部的感測器單元110中，係相應於朝上方向配置之感測器單元110的數量而並列配置有傳送配線70，且配置於感測器單元110之傳送配線70的數量，係隨著愈往上方向的感測器單元110而逐個地減少。 In the sensor units 110 at the lower end of each column, the transmission lines 70 are arranged in parallel corresponding to the number of the sensor units 110 arranged in the upward direction, and the transmission lines 70 arranged in the sensor units 110 The number decreases one by one as the sensor units 110 go upward.

由於傳送配線70之數量隨著愈往上方向的感測器單元110而變少，從而在上方向的感測器單元110形成剩餘區域90。在剩餘區域90中，係考慮光學上的美觀而配置有虛設電極。設於剩餘區域90上的虛設電極係連接於接地，從而發揮作為接地電極的作用。設於剩餘區域90的接地電極係以與傳送配線70分離之方式配置。 Since the number of the transfer wires 70 decreases with the sensor units 110 going upward, the sensor units 110 in the upward direction form the remaining area 90 . In the remaining area 90 , dummy electrodes are arranged in consideration of optical beauty. The dummy electrodes provided on the remaining area 90 are connected to the ground and function as ground electrodes. The ground electrode provided in the remaining area 90 is arranged so as to be separated from the transmission line 70 .

在各列依上下向之各感測器單元110被拉出之朝下方延伸的複數條傳送配線70，係依基板100上之集合矩陣中之相同行的感測器單元110接線，且經由如圖2所示的多工器43而連接於傳送電路41。 A plurality of transmission wires 70 extending downward from each sensor unit 110 drawn up and down in each column are wired according to the sensor units 110 of the same row in the aggregate matrix on the substrate 100, and through such as The multiplexer 43 shown in FIG. 2 is connected to the transmission circuit 41 .

傳送電路41係可對於由多工器43所選擇的傳送配線70輸出供偵測動作用的傳送信號。 The transmission circuit 41 can output a transmission signal for a detection operation to the transmission line 70 selected by the multiplexer 43 .

接收配線80係接收電極52的一部分，相當於圖2所示的接收信號線22。 The reception wiring 80 is a part of the reception electrode 52 and corresponds to the reception signal line 22 shown in FIG. 2 .

接收配線80係配置於檢測區域50的左側，且與第二ㄈ字形部52a的上端部52e接線(參照圖5)。接收配線80係以與檢測區域50之傳送電極51分離之方式配置。 The reception wiring 80 is arranged on the left side of the detection area 50, and is connected to the upper end portion 52e of the second ℈-shaped portion 52a (see FIG. 5). The reception wiring 80 is arranged so as to be separated from the transmission electrode 51 of the detection region 50 .

接收配線80係作為與列中之上下方向之各感測器單元110的接收電極52共通地接線之一條配線朝下方向被拉出。朝下方向被拉出的接收配線80，係經由如圖2所示的多工器43而連接於接收電路42。 The reception wiring 80 is pulled out downward as one wiring common to the reception electrodes 52 of the respective sensor cells 110 in the vertical direction in the column. The receiving wiring 80 drawn downward is connected to the receiving circuit 42 via the multiplexer 43 shown in FIG. 2 .

藉此，接收電路42係可從由多工器43所選擇的接收配線80接收供偵測動作用的接收信號。因此，因為觸控操作等而產生電容變化的位置係藉由接收電路42被檢測。 Thereby, the receiving circuit 42 can receive the receiving signal for the detection operation from the receiving line 80 selected by the multiplexer 43 . Therefore, the position where the capacitance changes due to the touch operation or the like is detected by the receiving circuit 42 .

本實施型態中的感測器單元110，雖然在傳送配線70的數量或配線寬度、剩餘區域90的範圍等有些許的差異，卻仍大致具有與上述之感測器單元110X共通的構成。 The sensor unit 110 in this embodiment generally has the same configuration as the above-mentioned sensor unit 110X, although there are some differences in the number or width of the transmission lines 70 and the range of the remaining area 90 .

依據此使用感測器單元110的單層構造，不用形成於使傳送電極51和接收電極52交叉時用以防止貫穿的絕緣層，藉由配置於相同平面上即可使靜電電容產生。 According to this single-layer structure using the sensor unit 110, no insulating layer is formed to prevent penetration when the transmission electrode 51 and the reception electrode 52 intersect, and capacitance can be generated by arranging them on the same plane.

不過，比較例中的感測器單元110Y，如圖6所示，雖構成與本實施型態之感測器單元110X大致共通，但在關於傳送配線70之配線寬度及剩餘區域90的設計上則有極大差別。 However, although the sensor unit 110Y in the comparative example has substantially the same configuration as the sensor unit 110X of the present embodiment as shown in FIG. There is a huge difference.

以下說明觸控面板2中之配線設計的詳細內容。 The details of wiring design in the touch panel 2 will be described below.

<4、觸控面板的配線設計> <4. Wiring design of touch panel>

茲使用圖7至圖12來說明本實施型態之觸控面板2的配線設計。在本實施型態中，係針對傳送配線70之配線設計的巧思進行說明。 The wiring design of the touch panel 2 of this embodiment will now be described using FIGS. 7 to 12 . In this embodiment, the ingenuity of wiring design of the transmission wiring 70 is described.

在此，係抽出圖4所示之集合矩陣中之列之上下方向上連續之五個感測器單元110所構成的感測器單元群120，以作為配線設計的一例進行說明。 Here, the sensor unit group 120 constituted by five sensor units 110 consecutive in the vertical direction in the set matrix shown in FIG. 4 is extracted as an example of wiring design for description.

[4-1、傳送配線之配線設計的比較例] [4-1. Comparison example of wiring design for transmission wiring]

茲使用圖7至圖9來說明觸控面板2中之傳送配線70之配線設計的比較例。 A comparative example of wiring design of the transmission wiring 70 in the touch panel 2 will now be described using FIGS. 7 to 9 .

比較例中感測器單元群120X係如圖7所示，由感測器單元110a、110b、110c、110d、110e所構成。 The sensor unit group 120X in the comparative example is as shown in FIG. 7 and is composed of sensor units 110a, 110b, 110c, 110d, and 110e.

感測器單元110a至110e係從下端部朝上方向依序配置，且分別於感測器單元110a的傳送電極51中接線有傳送配線70a、於感測器單元110b的傳送電極51中接線有傳送配線70b、於感測器單元110c的傳送電極51中接線有傳送配線70c、於感測器單元110d的傳送電極51接線有傳送配線70d、於感測器單元110e的傳送電極51接線有傳送配線70e。 The sensor units 110a to 110e are sequentially arranged from the lower end upward, and the transmission wiring 70a is connected to the transmission electrode 51 of the sensor unit 110a, and the transmission line 70a is connected to the transmission electrode 51 of the sensor unit 110b. The transmission line 70b is connected to the transmission electrode 51 of the sensor unit 110c, the transmission line 70c is connected to the transmission electrode 51 of the sensor unit 110d, the transmission line 70d is connected to the transmission electrode 51 of the sensor unit 110e, and the transmission line is connected to the transmission electrode 51 of the sensor unit 110e. Wiring 70e.

茲說明配置於感測器單元群120X之各感測器單元110中之傳送配線70的配線寬度。圖8係從感測器單元群120X抽出感測器單元110a至110c，且將配置於各感測器單元110的傳送配線70等予以放大顯示。 The wiring width of the transmission wiring 70 arranged in each sensor unit 110 of the sensor unit group 120X will be described below. In FIG. 8 , the sensor units 110 a to 110 c are extracted from the sensor unit group 120X, and the transmission wiring 70 and the like arranged in each sensor unit 110 are enlarged and displayed.

在此，係以各感測器單元110之傳送電極51之配線鄰接部51d的上端為基準，且將位於從該上端朝左右方向延伸之基準線上之各傳送配線70的配線寬度，設為各感測器單元110中之各傳送配線70的配線寬度進行說明。 Here, the upper end of the wiring adjacent portion 51d of the transmission electrode 51 of each sensor unit 110 is used as a reference, and the wiring width of each transmission wiring 70 located on a reference line extending from the upper end in the left-right direction is set to be each The wiring width of each transmission wiring 70 in the sensor unit 110 will be described.

茲說明感測器單元110a至110c中之傳送配線70d的配線寬度，作為各感測器單元110中之各傳送配線70之配線寬度的一例。 The wiring width of the transmission wiring 70 d in the sensor units 110 a to 110 c will be described as an example of the wiring width of each transmission wiring 70 in each sensor unit 110 .

首先，感測器單元110b之傳送配線70d的配線寬度L2，係設為比感測器單元110a之傳送配線70d的配線寬度L1更大(L1<L2)。此外，感測器單元110c之傳送配線70d的配線寬度L3，係設為比感測器單元110b之傳送配線70d的配線寬度L2更大(L2<L3)。 First, the wiring width L2 of the transmission wiring 70d of the sensor unit 110b is set to be larger than the wiring width L1 of the transmission wiring 70d of the sensor unit 110a (L1<L2). In addition, the wiring width L3 of the transmission wiring 70d of the sensor unit 110c is set to be larger than the wiring width L2 of the transmission wiring 70d of the sensor unit 110b (L2<L3).

換言之，傳送配線70d的配線寬度係隨著愈往上方向之感測器單元110而逐漸變大(L1<L2<L3)。此點在其他傳送配線70中亦復相同。 In other words, the wiring width of the transmission wiring 70d gradually becomes larger as the sensor unit 110 moves upward (L1<L2<L3). This point is also the same for other transmission lines 70 .

各列中之各感測器單元110的傳送配線70，係形成為朝下方向被拉出的構造。因此，傳送配線70的配線長度係隨著愈往上方向的感測器單元110而變長，配線電阻亦增大。由於此傳送配線70之配線電阻的增加，有使觸控面板2之上方中之觸控位置的檢測精確度降低之虞。 The transmission wiring 70 of each sensor unit 110 in each column is formed to be pulled out downward. Therefore, the wiring length of the transmission wiring 70 becomes longer as the sensor unit 110 goes upward, and the wiring resistance also increases. Due to the increase in the wiring resistance of the transmission wiring 70 , there is a possibility that the detection accuracy of the touch position on the upper side of the touch panel 2 may be lowered.

因此，為了盡量減輕傳送配線70中的配線電阻，比較例中的傳送配線70係被設計為配線數隨著愈往上方向的感測器單元110而減少，且利用相應該減少程度的空間而增大配線寬度。 Therefore, in order to reduce the wiring resistance in the transmission wiring 70 as much as possible, the transmission wiring 70 in the comparative example is designed so that the number of wirings decreases as the sensor unit 110 goes up, and the space corresponding to the reduction is utilized. Increase the wiring width.

此外，感測器單元110a中之傳送配線70b至70e的配線寬度(配線寬度L1)、感測器單元110b中之傳送配線70c至70e的配線寬度(配線寬度L2)、感測器單元110c中之傳送配線70d、70e的配線寬度(配線寬度L3)係分別相同。亦即，各感測器單元110中所配置之各傳送配線70的配線寬度係被設為均等。 In addition, the wiring width (wiring width L1) of the transmission wirings 70b to 70e in the sensor unit 110a, the wiring width (wiring width L2) of the transmission wirings 70c to 70e in the sensor unit 110b, and the wiring width (wiring width L2) in the sensor unit 110c The wiring widths (wiring width L3) of the transmission wirings 70d and 70e are respectively the same. That is, the wiring width of each transmission wiring 70 arranged in each sensor unit 110 is set to be equal.

此外，傳送配線70d的配線寬度係隨著愈往上方向之感測器單元110而逐漸變大，在預定的感測器單元110中，與傳送電極51之配線 鄰接部51d鄰接之傳送配線70的配線寬度，係比配線鄰接部51d的電極寬度更大。 In addition, the wiring width of the transmission wiring 70d gradually becomes larger as the sensor unit 110 goes upward, and in a predetermined sensor unit 110, the wiring with the transmission electrode 51 The wiring width of the transmission wiring 70 adjacent to the adjacent portion 51d is larger than the electrode width of the wiring adjacent portion 51d.

在圖8中，於感測器單元110b中，與配線鄰接部51d鄰接之傳送配線70c的配線寬度L2係設為比配線鄰接部51d之電極寬度L4更大(L4<L2)。 In FIG. 8, in the sensor unit 110b, the wiring width L2 of the transmission wiring 70c adjacent to the wiring adjacent portion 51d is set larger than the electrode width L4 of the wiring adjacent portion 51d (L4<L2).

在比感測器單元110b更朝上方向配置的感測器單元110c中，與配線鄰接部51d鄰接之傳送配線70的配線寬度L3，亦被設為比配線鄰接部51d的電極寬度L4更大(L4<L3)。 In the sensor unit 110c arranged upward from the sensor unit 110b, the wiring width L3 of the transmission wiring 70 adjacent to the wiring adjacent portion 51d is also set to be larger than the electrode width L4 of the wiring adjacent portion 51d. (L4<L3).

以下，在朝上方向連續的感測器單元110中，與配線鄰接部51d鄰接之傳送配線70的配線寬度，亦比配線鄰接部51d的電極寬度更大。 Hereinafter, in the sensor cells 110 continuing upward, the wiring width of the transmission wiring 70 adjacent to the wiring adjacent portion 51d is also larger than the electrode width of the wiring adjacent portion 51d.

接著說明從感測器單元群120X之傳送配線70的配置所產生之剩餘區域90、93。圖9係將感測器單元群120X之上端部之感測器單元110d、110e予以放大而成者。 Next, the remaining regions 90 and 93 resulting from the arrangement of the transfer wiring 70 of the sensor unit group 120X will be described. FIG. 9 is an enlargement of the sensor units 110d and 110e at the upper end of the sensor unit group 120X.

在傳送配線70e的右側係產生了剩餘區域90。此外，在屬於感測器單元群120X之上端的感測器單元110e中，因為未有與傳送電極51之配線鄰接部51d鄰接的傳送配線70，故產生剩餘區域93。 A surplus area 90 is created on the right side of the transmission line 70e. In addition, in the sensor cell 110e belonging to the upper end of the sensor cell group 120X, since there is no transfer wire 70 adjacent to the wire adjacent portion 51d of the transfer electrode 51, a surplus region 93 is generated.

因此，在比較例中，係考慮光學上的美觀而將在浮動狀態下形成圖案的虛設電極配置於剩餘區域93。 Therefore, in the comparative example, dummy electrodes patterned in a floating state were arranged in the remaining region 93 in consideration of the optical appearance.

上述的比較例，為了減輕因為傳送配線70的配線長度變長而增大的配線電阻，乃隨著愈往上方向的感測器單元110而增大配線寬度，藉此謀求操作位置之檢測精確度的提升。 In the above-mentioned comparative example, in order to reduce the increased wiring resistance due to the longer wiring length of the transmission wiring 70, the wiring width is increased as the sensor unit 110 goes upward, thereby achieving accurate detection of the operating position. degree of improvement.

不過，若為了減輕配線電阻而將傳送配線70的配線寬度過於增大時，反而會有導致觸控位置之檢測精確度之降低之虞。其理由為在與配置於各 列之各感測器單元110對應之並列配置的複數條傳送配線70中，將會使邏輯設為相反之信號波形的傳送信號T+、T-供給至彼此鄰接之傳送配線70的各者，而有產生因為傳送配線70間的電容而將信號波形彼此抵銷的作用之虞之故。此種作用尤其隨著傳送配線70的配線寬度變大而更顯著地產生。 However, if the wiring width of the transmission wiring 70 is increased too much in order to reduce the wiring resistance, the detection accuracy of the touch position may decrease instead. The reason is that in and configured in each Among the plurality of transmission lines 70 arranged in parallel corresponding to the sensor units 110 of the column, the transmission signals T+, T- having logics of opposite signal waveforms are supplied to each of the transmission lines 70 adjacent to each other, and There is a possibility that the effect of canceling out the signal waveforms due to the capacitance between the transmission lines 70 may occur. Such an effect occurs more remarkably especially as the wiring width of the transmission wiring 70 becomes larger.

以下說明的實施型態係解決上述的問題，以謀求操作位置之檢測精確度的維持或上升者。 The implementation forms described below solve the above-mentioned problems in order to maintain or increase the detection accuracy of the operating position.

[4-2、本實施型態中之傳送配線的配線設計] [4-2. Wiring design of transmission wiring in this embodiment]

茲使用圖10至圖12來說明本實施型態中之觸控面板2之傳送配線70的配線設計。 The wiring design of the transmission wiring 70 of the touch panel 2 in this embodiment will be described using FIGS. 10 to 12 .

本實施型態中之感測器單元群120Y係如圖10所示，由感測器單元110A、110B、110C、110D、110E所構成。 The sensor unit group 120Y in this embodiment is, as shown in FIG. 10 , composed of sensor units 110A, 110B, 110C, 110D, and 110E.

感測器單元110A至110E係從下端部朝上方向依序配置，且分別於感測器單元110A的傳送電極51中接線有傳送配線70A、於感測器單元110B的傳送電極51中接線有傳送配線70B、於感測器單元110C的傳送電極51中接線有傳送配線70C、於感測器單元110D的傳送電極51接線有傳送配線70D、於感測器單元110E的傳送電極51接線有傳送配線70E。 The sensor units 110A to 110E are sequentially arranged from the bottom end upward, and the transmission wiring 70A is connected to the transmission electrode 51 of the sensor unit 110A, and the transmission line 70A is connected to the transmission electrode 51 of the sensor unit 110B. The transmission line 70B, the transmission line 70C is connected to the transmission electrode 51 of the sensor unit 110C, the transmission line 70D is connected to the transmission electrode 51 of the sensor unit 110D, and the transmission line 70D is connected to the transmission electrode 51 of the sensor unit 110E. Wiring 70E.

茲說明配置於感測器單元群120Y之各感測器單元110中之傳送配線70的配線寬度。圖11係從感測器單元群120Y抽出感測器單元110A至110C，且將配置於各感測器單元110的傳送配線70等予以放大顯示。 The wiring width of the transmission wiring 70 arranged in each sensor unit 110 of the sensor unit group 120Y will be described below. In FIG. 11 , the sensor units 110A to 110C are extracted from the sensor unit group 120Y, and the transmission wiring 70 and the like arranged in each sensor unit 110 are enlarged and displayed.

在本實施型態中，亦將位於從各感測器單元110之配線鄰接部51d的上端朝左右方向延伸之基準線上之各傳送配線70的配線寬度，設為各感測器單元110中之各傳送配線70的配線寬度進行說明。 In this embodiment, the wiring width of each transmission wiring 70 located on the reference line extending from the upper end of the wiring adjacent portion 51d of each sensor unit 110 in the left-right direction is also set as the width of each sensor unit 110. The wiring width of each transmission wiring 70 will be described.

此外，以下假設感測器單元100B的檢測區域50為基準單元來進行說明。 In addition, the description below assumes that the detection area 50 of the sensor unit 100B is a reference unit.

在此，基準單元係指成為靜電電容之重心值檢測之基準的檢測區域50。在操作位置的檢測中，係被設為藉由檢測靜電電容的重心值而可檢測出檢測區域50之密度以上之解析度的位置，且將成為該重心值檢測之基準的感測器單元110設為在此所稱的基準單元。 Here, the reference cell refers to the detection area 50 serving as a reference for detection of the center of gravity value of the electrostatic capacitance. In the detection of the operating position, the sensor unit 110 is set to a position at which a resolution higher than the density of the detection area 50 can be detected by detecting the center of gravity value of the electrostatic capacitance, and will be used as a reference for detecting the center of gravity value. Let it be referred to as a reference unit here.

在本實施型態中，係將圖4所示之配置於基板100上的複數個感測器單元110中之中央之感測器單元110的檢測區域50設為成為重心值檢測之基準的單元，且將存在於該單元之行之感測器單元110的檢測區域50設定作為各列中的基準單元。 In this embodiment, the detection area 50 of the central sensor unit 110 among the plurality of sensor units 110 arranged on the substrate 100 shown in FIG. , and the detection area 50 of the sensor unit 110 existing in the row of the unit is set as the reference unit in each column.

茲使用感測器單元110A至110C中之傳送配線70D的配線寬度進行說明，以作為各感測器單元110中之各傳送配線70之配線寬度的一例。 The description will be made using the wiring width of the transmission wiring 70D in the sensor units 110A to 110C as an example of the wiring width of each transmission wiring 70 in each sensor unit 110 .

首先，感測器單元110B之傳送配線70D的配線寬度L6，係設為比感測器單元110A之傳送配線70D的配線寬度L5更大(L5<L6)。 First, the wiring width L6 of the transmission wiring 70D of the sensor unit 110B is set to be larger than the wiring width L5 of the transmission wiring 70D of the sensor unit 110A (L5<L6).

如此，至具有基準單元的感測器單元110B為止，傳送配線70D的配線寬度係隨著愈往上方向的感測器單元110而逐漸變大。另一方面，與具有基準單元之感測器單元110B之上方鄰接之感測器單元110C之傳送配 線70D的配線寬度L7，係與感測器單元110b之傳送配線70d的配線寬度L6相同(L6=L7)。 In this way, until the sensor unit 110B having the reference unit, the wiring width of the transmission wiring 70D gradually becomes larger as the sensor unit 110 goes upward. On the other hand, the transfer configuration of the sensor unit 110C adjacent to the upper side of the sensor unit 110B having the reference unit The wiring width L7 of the line 70D is the same as the wiring width L6 of the transmission wiring 70d of the sensor unit 110b (L6=L7).

換言之，至具有基準單元的感測器單元110B為止，傳送配線70D的配線寬度雖隨著愈往上方向的感測器單元110而逐漸變大，但從具有基準單元的感測器單元110B開始，則傳送配線70D的配線寬度即使往上方向的感測器單元110亦都相同。此點在其他傳送配線70中亦復相同。 In other words, until the sensor unit 110B having the reference unit, the wiring width of the transmission wiring 70D gradually becomes larger as the sensor unit 110 goes upward, but starts from the sensor unit 110B having the reference unit. , the wiring width of the transmission wiring 70D is the same even for the sensor units 110 in the upward direction. This point is also the same for other transmission lines 70 .

雖然隨著愈往上方向的感測器單元110，傳送配線70的配線長度變長且配線電阻增大，但關於配線電阻的影響，係可藉由控制對於偵測動作時之傳送配線70的充電時間，而可達到觸控信號強度之某程度的控制。 Although the wiring length of the transmission wiring 70 becomes longer and the wiring resistance increases as the sensor unit 110 moves upward, the influence of the wiring resistance can be controlled by controlling the transmission wiring 70 during the detection operation. The charging time can achieve a certain degree of control of the touch signal strength.

因此，在到達基準單元前為了減輕配線電阻，藉由將傳送配線70的配線寬度擴大某程度，於到達基準單元後則不過度地擴大配線寬度，從而可減輕因為配線電阻所導致之觸控位置之檢測精確度的降低，同時可減輕因為鄰接之傳送配線70的電容而將信號波形彼此抵銷的作用，藉此可謀求觸控面板2之上部之觸控位置之檢測精確度的維持或提升。 Therefore, in order to reduce the wiring resistance before reaching the reference unit, the wiring width of the transmission wiring 70 is enlarged to a certain extent, and the wiring width is not enlarged excessively after reaching the reference unit, thereby reducing the touch position caused by the wiring resistance. The reduction of the detection accuracy can reduce the effect of canceling the signal waveforms due to the capacitance of the adjacent transmission wiring 70, thereby maintaining or improving the detection accuracy of the touch position on the upper part of the touch panel 2. .

在具有基準單元的感測器單元110B中，與傳送電極51之配線鄰接部51d鄰接之傳送配線70C的配線寬度L6，係形成為與配線鄰接部51d的電極寬度L8相同或比電極寬度L8更小(L6≦L8)。 In the sensor unit 110B having the reference cell, the wiring width L6 of the transfer wiring 70C adjacent to the wiring adjacent portion 51d of the transfer electrode 51 is formed to be equal to or wider than the electrode width L8 of the wiring adjacent portion 51d. Small (L6≦L8).

此外，並列配置於感測器單元110B之傳送配線70C至70E之各者的配線寬度L6係形成為相同。 In addition, the wiring width L6 of each of the transmission wirings 70C to 70E arranged in parallel in the sensor unit 110B is formed to be the same.

藉此，在具有基準單元之感測器單元110B之後之上方向上連續的各感測器單元110中，各傳送配線70的配線寬度成為均等(L6=L7、L7≦L8)。因此，可減輕因為鄰接之傳送配線70的電容而將信號波形彼此抵銷的作用，而可謀求觸控面板2之上部之觸控位置之檢測精確度的維持或提升。 Thereby, the wiring width of each transmission wiring 70 becomes equal in each sensor cell 110 which follows the sensor cell 110B which has a reference cell in the upward direction (L6=L7, L7≦L8). Therefore, the effect of canceling the signal waveforms due to the capacitance of the adjacent transmission wiring 70 can be reduced, and the detection accuracy of the touch position on the upper part of the touch panel 2 can be maintained or improved.

並列配置於感測器單元110A之傳送配線70B至70E之各者的配線寬度L5係形成為相同。 The wiring width L5 of each of the transmission wirings 70B to 70E arranged in parallel in the sensor unit 110A is formed to be the same.

另外，在本實施型態中，雖構成為至具有基準單元的感測器單元110B為止，傳送配線70的配線寬度係隨著愈往上方向的感測器單元110而逐漸地變大，但亦可構成為將傳送配線70的配線寬度設為在上下方向上均等。 In addition, in the present embodiment, the wiring width of the transmission wiring 70 is gradually increased as the sensor unit 110 goes up to the sensor unit 110B having the reference unit. It may also be configured such that the wiring width of the transmission wiring 70 is equal in the vertical direction.

在圖11中，當例如將傳送配線70D的配線寬度設為在上下方向上均等時，配線寬度L5、配線寬度L6、配線寬度L7的大小成為相同(L5=L6=L7)。至於其他傳送配線70亦復相同。 In FIG. 11 , for example, when the wiring width of the transmission wiring 70D is equal in the vertical direction, the wiring width L5 , the wiring width L6 , and the wiring width L7 are the same (L5=L6=L7). The same applies to other transmission lines 70 .

接著說明從感測器單元群120Y之傳送配線70的配置所產生的剩餘區域90。圖12係將感測器單元群120Y之上端部的感測器單元110D、110E予以放大而成者。 Next, the remaining area 90 resulting from the arrangement of the transfer wiring 70 of the sensor unit group 120Y will be described. FIG. 12 is an enlarged version of the sensor units 110D and 110E at the upper end of the sensor unit group 120Y.

在圖12中，係傳送配線70的數量隨著愈往上方向的感測器單元110而減少，從而於上方向之感測器單元110之傳送配線70E的右側形成剩餘區域90。此外，在屬於感測器單元群120Y之上端的感測器單元110E中，未有與傳送電極51之配線鄰接部51d鄰接的傳送配線70，因此在配線鄰接部51d的右側亦產生剩餘區域90。 In FIG. 12 , the number of transmission lines 70 decreases as the sensor units 110 go upward, so that a remaining area 90 is formed on the right side of the transmission lines 70E of the sensor units 110 in the upward direction. In addition, in the sensor unit 110E belonging to the upper end of the sensor unit group 120Y, there is no transfer wiring 70 adjacent to the wiring adjoining portion 51d of the transfer electrode 51, so a surplus region 90 is also generated on the right side of the wiring adjoining portion 51d. .

在剩餘區域90中雖考慮光學上的美觀而配置有虛設電極，但該虛設電極係連接於接地，從而發揮作為接地電極的作用。 In the remaining area 90 , a dummy electrode is arranged in consideration of an optical appearance, but the dummy electrode is connected to the ground and functions as a ground electrode.

在左右方向上鄰接的二個感測器單元110中，係於一方之感測器單元110的傳送配線70、與另一方之感測器單元110之接收配線80之間設置剩餘區域90，從而使該傳送配線70與該接收配線80電性分離，可避開彼此的電性干擾。 Among the two sensor units 110 adjacent in the left-right direction, the remaining area 90 is provided between the transmission line 70 of one sensor unit 110 and the reception line 80 of the other sensor unit 110, so that Electrically separating the transmitting wiring 70 and the receiving wiring 80 can avoid mutual electrical interference.

此外，由於殘留的電荷從該虛設電極放電至接地，故可防止對於偵測動作中之信號值之絕對值或再現性造成影響所導致之觸控位置之檢測精確度的降低。 In addition, since the remaining electric charge is discharged from the dummy electrode to the ground, it is possible to prevent the decrease of the detection accuracy of the touch position caused by the influence on the absolute value or reproducibility of the signal value in the detection operation.

依據上述之本實施型態，係致力於配置於基板100上之感測器單元110之矩陣中各列之配線設計的巧思，藉此可維持或提升觸控面板2之上部之觸控位置檢測精確度。 According to the above-mentioned present embodiment, it is devoted to the ingenuity of the wiring design of each column in the matrix of the sensor units 110 arranged on the substrate 100, so that the touch position on the upper part of the touch panel 2 can be maintained or improved. Detection accuracy.

<5、變形例> <5. Modifications>

另外，本實施型態中之觸控面板2之傳送配線70的配線設計，亦可採用以下的態樣。 In addition, the wiring design of the transmission wiring 70 of the touch panel 2 in this embodiment can also adopt the following aspects.

本實施型態之感測器單元110係可採用感測器單元110X以外的構造。 The sensor unit 110 of this embodiment can adopt a structure other than the sensor unit 110X.

例如，如圖13之感測器單元110Z所示，亦可不配置虛設電極群60，而將檢測區域50A朝上下方向擴張地進行配置。藉此，在檢測區域50A中之傳送電極51與接收電極52鄰接的區域即增加，可提升檢測區域50A中之靜電電容的變化量。因此，藉由使用感測器單元110Z的構造，從而可提升觸控面板2的靈敏度。 For example, as shown in the sensor unit 110Z of FIG. 13 , the dummy electrode group 60 may not be arranged, and the detection region 50A may be arranged so as to expand in the vertical direction. Thereby, the area adjacent to the transmission electrode 51 and the reception electrode 52 in the detection area 50A is increased, and the change amount of the electrostatic capacitance in the detection area 50A can be increased. Therefore, by using the structure of the sensor unit 110Z, the sensitivity of the touch panel 2 can be improved.

在本實施型態中，雖以成為重心值檢測之基準之感測器單元110的檢測區域50為基準單元進行了說明，但基準單元亦可藉由各種基準來設定。 In this embodiment, although the detection area 50 of the sensor unit 110 used as the reference unit for the detection of the center of gravity value is described as a reference unit, the reference unit may be set by various references.

例如，可考慮在將比具有基準單元之感測器單元110更上方向之感測器單元110之傳送配線70的配線寬度設為均等時，以與上端部之感測器單元110E之檢測區域50接線之傳送配線70E的配線電阻成為預定值以下之方式設定基準單元。 For example, when the wiring width of the transmission wiring 70 of the sensor unit 110 in the upper direction than the sensor unit 110 having the reference unit is set to be equal, the detection area of the sensor unit 110E at the upper end may be considered to be equal. The reference cell is set so that the wiring resistance of the 50-wire transmission wiring 70E becomes a predetermined value or less.

在此之所以根據傳送配線70E的配線電阻來設定基準單元，係因為與上端部之感測器單元110E接線之傳送配線70E的配線長度最長之故。換言之，係因為藉由以配線電阻會變高之傳送配線70E之配線電阻成為預定值以下之方式設定基準單元，從而與同列之其他感測器單元110接線之傳送配線70的配線電阻亦會成為預定值以下之故。 The reason why the reference cell is set according to the wiring resistance of the transmission wiring 70E here is that the wiring length of the transmission wiring 70E connected to the sensor unit 110E at the upper end is the longest. In other words, the wiring resistance of the transmission wiring 70 connected to the other sensor units 110 in the same column is also set as the reference cell so that the wiring resistance of the transmission wiring 70E whose wiring resistance becomes high becomes equal to or less than a predetermined value. The reason is below the predetermined value.

配線電阻中的預定值以下，較佳為150kΩ以下，尤佳為100kΩ以下。在此之預定值，係加進了偵測動作時對於傳送配線70充電時間之控制所形成之觸控信號強度之控制後之配線電阻的值。 The wiring resistance is not more than a predetermined value, preferably not more than 150 kΩ, particularly preferably not more than 100 kΩ. The predetermined value here is the value of the wiring resistance after adding the control of the strength of the touch signal formed by controlling the charging time of the transmission wiring 70 during the detection operation.

此外，亦可設為基準單元係從配置於基板100上的感測器單元110任意地設定。例如，可將各列之上下方向上連續之感測器單元110中之位於約三分之一位置之感測器單元110的檢測區域50設定作為基準單元。 In addition, the reference unit may be arbitrarily set from the sensor unit 110 arranged on the substrate 100 . For example, the detection area 50 of the sensor unit 110 located at about one-third of the sensor units 110 continuous in the vertical direction of each column may be set as the reference unit.

在本實施型態中，如圖11所示，於基準單元的感測器單元110B中，雖設為與傳送電極51之配線鄰接部51d鄰接之傳送配線70C的配線寬度L6形成為與配線鄰接部51d的電極寬度L8相同或比電極寬度 L8更小的形態進行了說明，但亦可設為傳送配線70C的配線寬度L6係形成為與任意規定之預定之值相同或比該預定之值更小。 In the present embodiment, as shown in FIG. 11 , in the sensor unit 110B of the reference unit, although the wiring width L6 of the transmission wiring 70C adjacent to the wiring adjacent portion 51 d of the transmission electrode 51 is formed so as to be adjacent to the wiring The electrode width L8 of the portion 51d is the same as or larger than the electrode width The embodiment in which L8 is smaller has been described, but the wiring width L6 of the transmission wiring 70C may be formed to be equal to or smaller than an arbitrarily predetermined predetermined value.

此外，在此所稱之預定之值，係被設定成基準單元之感測器單元110B中之傳送配線70C的配線電阻成為預定的電阻值以下，例如150kΩ以下、或100KΩ以下的值。 In addition, the predetermined value here is set such that the wiring resistance of the transmission wiring 70C in the sensor unit 110B of the reference unit becomes a predetermined resistance value or less, for example, a value of 150 kΩ or less or 100 KΩ or less.

<6、總結> <6. Summary>

以上之實施型態的觸控面板2(觸控面板裝置)係具備：檢測區域50，係由一對傳送電極51與接收電極52所構成；傳送配線70，係連接於傳送電極51，且從與檢測區域50連接的連接部分朝下方向延伸設置；及接收配線80，係連接於接收電極52；在以複數個檢測區域50中之一個檢測區域50為基準單元時，至少從基準單元朝上方向連續地配置有一個或複數個檢測區域50，且相對於基準單元在與上下方向正交的右方向側上並列配置有：連接於基準單元的傳送配線70、及對應於比前述基準單元更朝上方向配置的一個或複數個前述檢測區域50之一條或複數條傳送配線70；該並列配置的一條或複數條傳送配線70之比相對於基準單元排列於右方向的位置更朝上方向延伸設置之部分的配線寬度為均等者(參照圖10、圖11)。 The touch panel 2 (touch panel device) of the above embodiment is equipped with: the detection area 50 is composed of a pair of transmission electrodes 51 and the reception electrodes 52; the transmission wiring 70 is connected to the transmission electrodes 51, and from The connection part connected to the detection area 50 is extended downward; and the receiving wiring 80 is connected to the receiving electrode 52; One or a plurality of detection areas 50 are arranged continuously in the direction, and are arranged side by side with respect to the reference unit on the right side perpendicular to the up-down direction: the transmission wiring 70 connected to the reference unit, and the corresponding One or a plurality of transmission lines 70 of one or a plurality of detection regions 50 arranged in an upward direction; the one or a plurality of transmission lines 70 arranged in parallel extend in an upward direction compared with the position arranged in the right direction with respect to the reference unit Wiring widths of the installed parts are equal (see FIG. 10 and FIG. 11 ).

亦即，相對於基準單元朝右方向配置之傳送配線70的配線寬度、與相對於比基準單元更位於上方向的檢測區域50朝右方向配置之傳送配線70的配線寬度係均等者。 That is, the wiring width of the transmission wiring 70 arranged rightward with respect to the reference cell and the wiring width of the transmission wiring 70 arranged rightward with respect to the detection region 50 above the reference cell are equal.

因此，在比基準單元更上方向中，藉由不將傳送配線70的配線寬度設得更大，即可減輕鄰接之彼此為邏輯相反的傳送配線70彼此干擾。藉此，即可改善、且提升成為觸控位置檢測精確度之指標的準確性(accuracy)特 性，從而維持或提升觸控面板2中之觸控位置檢測精確度。尤其，藉由將比相對於基準單元排列於右方向之位置更朝上方向延伸設置之部分的配線寬度設為均等，即可謀求觸控面板2之上部之準確性特性的改善。 Therefore, by not making the wiring width of the transmission wiring 70 larger in the direction above the reference cell, it is possible to reduce the mutual interference of adjacent transmission wirings 70 which are logically opposite to each other. Thereby, it is possible to improve and enhance the accuracy characteristic which becomes an indicator of the accuracy of touch position detection. In order to maintain or improve the accuracy of touch position detection in the touch panel 2 . In particular, the accuracy characteristic of the upper part of the touch panel 2 can be improved by making uniform the wiring width of the portion extending upward from the position arranged in the right direction with respect to the reference cells.

在觸控面板2中，基準單元係成為靜電電容之重心值檢測之基準的檢測區域50。在觸控位置的檢測中，係被設為藉由檢測靜電電容的重心值而可檢測出檢測區域之密度以上之解析度的位置，且將成為該重心值檢測之基準的檢測區域50設為在此所稱的基準單元。 In the touch panel 2 , the reference unit is the detection region 50 that becomes the reference for detecting the center-of-gravity value of the electrostatic capacitance. In the detection of the touch position, it is set to a position at which a resolution higher than the density of the detection area can be detected by detecting the center of gravity value of the electrostatic capacitance, and the detection area 50 used as a reference for detection of the center of gravity value is set to referred to here as the reference unit.

藉此，基準單元的定位變得容易，可更有效率地進行傳送配線70的配線設計。 Thereby, the positioning of the reference cell becomes easy, and the wiring design of the transmission wiring 70 can be performed more efficiently.

在觸控面板2中，基準單元係成為規定從基準單元朝上方向之傳送配線70的配線寬度以使傳送配線70的電阻值成為預定之值時之基準的檢測區域50。藉此，以傳送配線70的電阻值成為預定之值之方式，針對並列配置的一個或複數個傳送配線70，設定相對於基準單元比並排於右方向之位置更朝上方向延伸設置之部分的配線寬度。 In the touch panel 2 , the reference cell serves as a reference detection region 50 for defining the wiring width of the transfer line 70 upward from the reference cell so that the resistance value of the transfer line 70 becomes a predetermined value. In this way, for one or a plurality of transmission lines 70 arranged in parallel, the resistance value of the transmission line 70 is set to be a predetermined value. wiring width.

為了提升觸控面板2的準確性特性，雖然不要將傳送配線70的配線寬度設為超過所需以上極為重要，但配線電阻會因為配線寬度過窄而變高，此點亦會成為使準確性特性降低的要因。 In order to improve the accuracy characteristics of the touch panel 2, it is very important not to make the wiring width of the transmission wiring 70 more than necessary, but the wiring resistance will become high because the wiring width is too narrow, and this will also affect the accuracy. Causes of property degradation.

因此，在考慮不會使準確性特性降低之傳送配線70的配線電阻值之後設定傳送配線70的配線寬度，從而可更有效率地改善且提升準確性特性。 Therefore, by setting the wiring width of the transmission wiring 70 in consideration of the wiring resistance value of the transmission wiring 70 that does not degrade the accuracy characteristic, the accuracy characteristic can be improved and enhanced more efficiently.

另外，並列配置的一條或複數條傳送配線70，較佳為設為配線電阻值成為150kΩ以下之值的配線寬度。尤佳為將配線電阻值設為100kΩ以下為理想。 In addition, one or a plurality of transmission lines 70 arranged in parallel preferably have a line width such that the line resistance value becomes a value of 150 kΩ or less. In particular, it is ideal to set the wiring resistance value to 100 kΩ or less.

在觸控面板2中，並列配置的一條或複數條傳送配線70之配線寬度係均等。 In the touch panel 2 , the wiring width of one or a plurality of transmission wirings 70 arranged in parallel is equal.

藉此，比相對於基準單元排列於右方向的位置更朝上方向延伸設置之部分之傳送配線70的配線寬度、和比相對於基準單元排列於右方向的位置更朝下方向延伸設置之部分之傳送配線70的配線寬度成為相同。 Thereby, the wiring width of the transmission line 70 at the portion extending upward from the position arranged in the right direction with respect to the reference cell and the portion extending downward at the portion arranged in the right direction with respect to the reference cell The wiring width of the transmission wiring 70 becomes the same.

藉由解除各傳送配線70之配線寬度的不均勻性，即可減輕鄰接之傳送配線70彼此干擾。藉此，可更進一步地提升觸控面板2的準確性特性，且可維持或提升觸控面板2中之觸控位置檢測精確度。 Interference between adjacent transmission lines 70 can be reduced by eliminating the unevenness of the wiring width of each transmission line 70 . Thereby, the accuracy characteristic of the touch panel 2 can be further improved, and the detection accuracy of the touch position in the touch panel 2 can be maintained or improved.

在觸控面板2中，檢測區域50之傳送電極51之配線鄰接部51d中的電極寬度，比鄰接之傳送配線70的配線寬度更大(參照圖11)。亦即，與傳送電極51之配線鄰接部51d鄰接之傳送配線70的比相對於基準單元排列於右方向的位置更朝上方向延伸設置之部分的配線寬度，比配線鄰接部51d中的電極寬度更窄。 In the touch panel 2 , the electrode width in the wiring adjacent portion 51 d of the transfer electrode 51 in the detection region 50 is larger than the wiring width of the adjacent transfer wiring 70 (see FIG. 11 ). That is, the wiring width of the portion of the transfer wiring 70 adjacent to the wiring adjoining portion 51d of the transfer electrode 51 extending upward from the position where the reference cells are arranged in the right direction is larger than the electrode width in the wiring adjoining portion 51d. Narrower.

藉此，即可減輕傳送電極51與傳送配線70之間的干擾等，從而可更進一步提升觸控面板2的準確性特性，且可維持或提升觸控面板2中之觸控位置檢測精確度。 In this way, the interference between the transmission electrodes 51 and the transmission wiring 70 can be reduced, thereby further improving the accuracy characteristics of the touch panel 2, and maintaining or improving the touch position detection accuracy in the touch panel 2 .

在觸控面板2中，可考慮在傳送配線70之右方向側的剩餘區域90，以相鄰之方式配置接地電極作為虛設電極(參照圖12)。藉此，傳送配線70之右方向側之殘留電荷即藉由剩餘區域90中之接地電極而放電。 In the touch panel 2 , it is conceivable to arrange ground electrodes as dummy electrodes adjacent to the remaining region 90 on the right side of the transmission wiring 70 (see FIG. 12 ). Thereby, the residual charge on the right side of the transfer wiring 70 is discharged through the ground electrode in the remaining region 90 .

因此，可減輕殘留於虛設電極之電荷對於與虛設電極鄰接之傳送配線70的影響，因此可更進一步地提升觸控面板2的準確性特性，且可維持或提升觸控面板2中之觸控位置檢測精確度。 Therefore, the influence of the charges remaining in the dummy electrodes on the transfer wiring 70 adjacent to the dummy electrodes can be reduced, so that the accuracy characteristics of the touch panel 2 can be further improved, and the touch control in the touch panel 2 can be maintained or improved. Position detection accuracy.

最後，上述之各實施型態的說明係本發明之一例，本發明不限定於上述實施型態。因此，即使是上述之各實施型態以外，若為不脫離本發明之技術思想的範圍，當然可依設計等進行各種變更。此外，本說明書所記載的功效僅為例示並非用以限定者，亦可有其他功效。 Finally, the description of each of the above-mentioned embodiments is an example of the present invention, and the present invention is not limited to the above-mentioned embodiments. Therefore, it is needless to say that various changes can be made depending on the design, etc., without departing from the scope of the technical idea of the present invention, even in addition to the above-mentioned embodiments. In addition, the functions described in this specification are only examples and not limiting, and other functions are also possible.

50:檢測區域 50: detection area

51:傳送電極 51: Transmission electrode

51d:配線鄰接部 51d: Wiring adjacent part

52:接收電極 52: Receive electrode

60:虛設電極群 60:Dummy electrode group

70A~70E:傳送配線 70A~70E: transmission wiring

90:剩餘區域 90: remaining area

100A~100C:感測器單元 100A~100C: Sensor unit

120Y:感測器單元群 120Y: Sensor unit group

L5,L6,L7:配線寬度 L5, L6, L7: wiring width

L8:電極寬度 L8: electrode width

Claims (7)

一種觸控面板裝置，係具備：檢測區域，係由一對傳送電極與接收電極所構成；傳送配線，係連接於前述傳送電極，且從與前述檢測區域連接的連接部分朝第一方向延伸設置；及接收配線，係連接於前述接收電極；在以複數個前述檢測區域中之一個檢測區域為基準單元時，至少從前述基準單元朝前述第一方向的相反方向連續地配置有一個或複數個前述檢測區域；且相對於前述基準單元在與前述第一方向正交的第二方向側上並列配置有：連接於前述基準單元的前述傳送配線、及對應於比前述基準單元更朝前述第一方向的相反方向連續而配置的一個或複數個前述檢測區域之一條或複數條前述傳送配線；前述並列配置的複數條前述傳送配線中，相對於前述基準單元從排列於前述第二方向的位置朝前述第一方向的相反方向延伸設置之一條或複數條前述傳送配線係：前述延伸設置之部分的配線寬度與前述並列配置之部分的配線寬度為均等者。 A touch panel device comprising: a detection area composed of a pair of transmission electrodes and a reception electrode; transmission wiring connected to the transmission electrodes and extending in a first direction from a connection portion connected to the detection area and receiving wires connected to the aforementioned receiving electrodes; when one of the plurality of aforementioned detection areas is used as a reference unit, at least one or a plurality of them are continuously arranged from the aforementioned reference unit toward the opposite direction of the aforementioned first direction. The aforementioned detection area; and relative to the aforementioned reference unit, arranged side by side in a second direction perpendicular to the aforementioned first direction: the aforementioned transmission wiring connected to the aforementioned reference unit; One or a plurality of the aforementioned transmission lines arranged continuously in the direction opposite to the direction opposite to the above-mentioned direction; among the aforementioned plurality of the aforementioned transmission lines arranged in parallel, from the position arranged in the aforementioned second direction toward the aforementioned reference unit. The one or more transmission wirings extending in the direction opposite to the first direction are those in which the wiring width of the extending portion is equal to the wiring width of the paralleling portion. 如請求項1所述之觸控面板裝置，其中，前述基準單元為作為靜電電容之重心值檢測之基準的前述檢測區域。 The touch panel device according to claim 1, wherein the reference unit is the detection area as a reference for detecting the center of gravity value of the electrostatic capacitance. 如請求項1所述之觸控面板裝置，其中，前述基準單元為作為以使前述傳送配線的電阻值成為預定之值之方式規定從前述基準單元朝向前述相反方向之前述傳送配線的前述配線寬度時之基準的前述檢測區域。 The touch panel device according to claim 1, wherein the reference unit is such that the resistance value of the transmission line becomes a predetermined value, and the wiring width of the transmission line from the reference unit toward the opposite direction is defined. The aforementioned detection area of the time reference. 如請求項1至3中任一項所述之觸控面板裝置，其中，前述並列配置的一條或複數條前述傳送配線之前述配線寬度係均等者。 The touch panel device according to any one of Claims 1 to 3, wherein the wiring widths of the one or more transmission wirings arranged in parallel are equal. 如請求項1至3中任一項所述之觸控面板裝置，其中，前述檢測區域之前述傳送電極之配線鄰接部中的電極寬度係比鄰接之前述傳送配線的前述配線寬度更大。 The touch panel device according to any one of claims 1 to 3, wherein the electrode width in the wiring adjacent portion of the transmission electrode in the detection region is larger than the wiring width of the adjacent transmission wiring. 如請求項3所述之觸控面板裝置，其中，前述並列配置的一條或複數條前述傳送配線，係被設為配線電阻值成為150kΩ以下之值的前述配線寬度。 The touch panel device according to claim 3, wherein the one or plural transmission lines arranged in parallel are set to have a line width such that a line resistance value is 150 kΩ or less. 如請求項1至3中任一項所述之觸控面板裝置，係在前述傳送配線的前述第二方向側以相鄰之方式配置有接地電極。 In the touch panel device according to any one of claims 1 to 3, a ground electrode is disposed adjacent to the second direction side of the transmission wiring.

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