CN201993738U - Projected capacitive touch panel - Google Patents

Abstract

The utility model relates to a projection type capacitance touch panel, which comprises an X-axis induction layer and a Y-axis induction layer, wherein the X-axis induction layer comprises a plurality of induction rows, each induction row comprises more than two parallel electrode strings, the Y-axis induction layer comprises a plurality of induction lines, each induction line comprises more than two parallel electrode strings, each electrode string comprises a plurality of Y-axis electrodes, and each Y-axis electrode is respectively alternate or opposite to each X-axis electrode; by utilizing the design, the impedance of each induction row and each induction column can be effectively reduced, so that the interpretation sensitivity of the controller is improved, and the size of the projection type capacitive touch panel is favorably increased.

Description

Translated fromChinese

投射式电容触控面板Projected capacitive touch panel

技术领域technical field

本实用新型是关于一种投射式电容触控面板，尤指一种可有效降低感应层上各电极内阻值的触控面板。The utility model relates to a projected capacitive touch panel, in particular to a touch panel which can effectively reduce the internal resistance of each electrode on the sensing layer.

背景技术Background technique

一种已知投射式电容触控面板的基本结构是如图4所示，其包括有：A basic structure of a known projected capacitive touch panel is shown in Figure 4, which includes:

一基板70，是呈透明状；A substrate 70 is transparent;

一X轴感应层80，是位于基板70上层，该X轴感应层80包括多数作横列排列的感应列，每一感应列是由多数呈菱形的X轴电极81相互连接所组成，又每一感应列分别与一X轴驱动线82连接；AnX-axis sensing layer 80 is located on the upper layer of the substrate 70. TheX-axis sensing layer 80 includes a plurality of sensing columns arranged in horizontal rows, and each sensing column is composed of a plurality of rhombus-shaped X-axis electrodes 81 connected to each other, and each The sensing columns are respectively connected to anX-axis driving line 82;

一Y轴感应层90，是位于基板70下层，该Y轴感应层90包括多数作直行排列的感应行，每一感应行是由多数呈菱形的Y轴电极91相互连接而成，又每一感应行分别与一Y轴驱动线92连接；A Y-axis sensing layer 90 is located on the lower layer of the substrate 70. The Y-axis sensing layer 90 includes a plurality of sensing lines arranged in a straight line, and each sensing line is formed by connecting a plurality of rhombic Y-axis electrodes 91 to each other, and each The sensing rows are respectively connected to a Y-axis drive line 92;

前述Y轴感应层90上的各个Y轴电极91是和X轴感应层80上各个X轴电极81相间或相对(对正)，若各Y轴电极91与各X轴电极81的位置是相间排列(如图5所示)，该投射式电容触控面板为一自容(Self Capacitance)型；若各Y轴电极91与各X轴电极81的位置是相互重迭，则该投射式电容触控面板为一互容(Mutual Capacitance)型。Each of the Y-axis electrodes 91 on the aforementioned Y-axis sensing layer 90 is alternated or opposite to (aligned with) each of theX-axis electrodes 81 on theX-axis sensing layer 80. If the positions of each Y-axis electrode 91 and eachX-axis electrode 81 are alternate arrangement (as shown in Figure 5), the projected capacitive touch panel is a self-capacitance (Self Capacitance) type; if the positions of the Y-axis electrodes 91 and theX-axis electrodes 81 overlap each other, the projected capacitive The touch panel is a mutual capacity (Mutual Capacitance) type.

又前述X、Y轴感应层80，90上的X，Y轴驱动线82，92是分别与控制器连接，以便由控制器检测X，Y轴感应层80，90上各电容节点的电容值变化。由于投射式电容触控面板对于感应介面(X、Y轴感应层80，90)与控制器间的配合要求甚高，即使是相互垂直的X、Y轴驱动线82，92都必须考量其阻抗大小及内阻值均匀与否的问题，主要是因X、Y轴驱动线82，92的内阻值及均匀与否将直接影响触控面板输出的讯号杂讯比(S/N)。Also the aforementioned X and Y-axis driving lines 82 and 92 on the X and Y-axis sensing layers 80 and 90 are respectively connected to the controller, so that the controller detects the capacitance value of each capacitance node on the X and Y-axis sensing layers 80 and 90 Variety. Since the projected capacitive touch panel requires very high coordination between the sensing interface (X, Yaxis sensing layers 80, 90) and the controller, even the perpendicular X, Yaxis driving lines 82, 92 must consider their impedance Whether the size and the internal resistance are uniform or not is mainly because the internal resistance and uniformity of the X and Yaxis driving lines 82 and 92 will directly affect the signal-to-noise ratio (S/N) output by the touch panel.

由上述可知，X、Y轴驱动线82，92是分别集中在X、Y轴感应层80，90上的一边上，供与控制器连接，在此状况下，各X、Y轴驱动线82，92与控制器的距离长度不可能相同，且存在相当差距，也就是X、Y轴驱动线82，92各自长短不一，而X、Y轴驱动线82，92的阻抗大小适与其长度适成正比，当面板尺寸愈大，驱动线愈长，其线阻抗即相对愈大，因而影响控制器判读的灵敏度，从而可能造成判读上的误差。As can be seen from the above, the X and Yaxis driving lines 82 and 92 are respectively concentrated on one side of the X and Yaxis sensing layers 80 and 90 for connection with the controller. In this case, each of the X and Yaxis driving lines 82, The distance between 92 and the controller cannot be the same, and there is a considerable gap, that is, the lengths of the X and Yaxis driving lines 82 and 92 are different, and the impedance of the X and Yaxis driving lines 82 and 92 is suitable for their length. Proportional, when the size of the panel is larger and the drive line is longer, the impedance of the line is relatively larger, which affects the sensitivity of the controller's interpretation, which may cause errors in interpretation.

故由上述可知，既有投射式电容触控面板仍存在上述技术瓶颈，犹待进一步检讨并谋求可行的解决方案。Therefore, it can be seen from the above that the existing projected capacitive touch panel still has the above-mentioned technical bottlenecks, which need to be further reviewed and found a feasible solution.

实用新型内容Utility model content

因此本实用新型主要目的在提供一种投射式电容触控面板，其可有效降低感应层上的电极串内阻值，以提升控制器判读电容值变化的灵敏度。Therefore, the main purpose of the present invention is to provide a projected capacitive touch panel, which can effectively reduce the internal resistance of the electrode strings on the sensing layer, so as to improve the sensitivity of the controller to judge the change of capacitance.

为达成前述目的采用的主要技术手段是令前述投射式电容触控面板包括：The main technical means adopted to achieve the above-mentioned purpose is to make the above-mentioned projected capacitive touch panel include:

一X轴感应层，包括多数感应列，每一感应列的一端分设有一X轴驱动线，又每一感应列分别由两个以上并联的X轴电极串组成，每一X轴电极串是由多数的X轴电极相串组成；An X-axis sensing layer, including a plurality of sensing columns, one end of each sensing column is provided with an X-axis driving line, and each sensing column is composed of more than two parallel X-axis electrode strings, and each X-axis electrode string is composed of Most of the X-axis electrodes are connected in series;

一Y轴感应层，包括多数感应行，每一感应行的一端分设有一Y轴驱动线，又每一感应行分别由两个以上并联的Y轴电极串组成，每一Y轴电极串是由多数的Y轴电极相串组成；A Y-axis sensing layer, including a plurality of sensing rows, one end of each sensing row is provided with a Y-axis driving line, and each sensing row is composed of two or more Y-axis electrode strings connected in parallel, and each Y-axis electrode string is composed of Most of the Y-axis electrodes are connected in series;

由于本实用新型是令X、Y轴感应层上的感应列及感应行分别由两个以上并联的电极串组成，而两电极串在并联状况下将使内阻值变小，从而达成降低电极串内阻值的目的。Because the utility model makes the sensing columns and sensing rows on the X-axis and Y-axis sensing layers respectively composed of more than two parallel electrode strings, and the parallel connection of the two electrode strings will make the internal resistance smaller, thereby reducing the electrode The purpose of the internal resistance value of the string.

附图说明Description of drawings

图1是本实用新型一较佳实施例的立体角度示意图。Fig. 1 is a perspective view of a preferred embodiment of the utility model.

图2A是本实用新型一较佳实施例的X轴感应层平面示意图。FIG. 2A is a schematic plan view of an X-axis sensing layer in a preferred embodiment of the present invention.

图2B是本实用新型一较佳实施例的Y轴感应层平面示意图。2B is a schematic plan view of a Y-axis sensing layer in a preferred embodiment of the present invention.

图3是本实用新型一较佳实施例中X、Y轴感应层重迭后的平面示意图。Fig. 3 is a schematic plan view of overlapping X-axis and Y-axis sensing layers in a preferred embodiment of the present invention.

图4是既有投射式电容触控面板的立体角度示意图。FIG. 4 is a schematic perspective view of a conventional projected capacitive touch panel.

图5是既有投射式电容触控面板的平面示意图。FIG. 5 is a schematic plan view of a conventional projected capacitive touch panel.

具体实施方式Detailed ways

以下配合图式及本实用新型的较佳实施例，进一步阐述本实用新型为达成预定实用新型目的所采取的技术手段。In the following, in conjunction with the drawings and preferred embodiments of the utility model, the technical means adopted by the utility model to achieve the intended purpose of the utility model are further described.

关于本实用新型的第一较佳实施例，首先请参考图1所示，本实用新型的投射式电容触控面板包括：Regarding the first preferred embodiment of the present utility model, first please refer to FIG. 1, the projected capacitive touch panel of the present utility model includes:

一X轴感应层XS，请配合图2A所示，其包括多数感应列10，每一感应列10的一端分设有一X轴驱动线13，又每一感应列10分别由两个以上并联的X轴电极串11，12组成，本实施例中，每一感应列10分别由两并联的X轴电极串11，12组成，每一X轴电极串11，12是由多数的X轴电极111，121相串组成；An X-axis sensing layer XS, as shown in FIG. 2A, includes a plurality ofsensing rows 10, one end of eachsensing row 10 is provided with anX-axis driving line 13, and eachsensing row 10 is composed of more than two parallel XAxis electrode strings 11, 12 are composed. In this embodiment, eachsensing column 10 is composed of two parallelX-axis electrode strings 11, 12, and eachX-axis electrode string 11, 12 is composed of a plurality ofX-axis electrodes 111, 121 phase string composition;

一Y轴感应层YS，请配合图2B所示，其包括多数感应行20，每一感应行20的一端分设有一Y轴驱动线23，又每一感应行20分别由两个以上并联的Y轴电极串21，22组成，本实施例中，每一感应行20分别由两并联的Y轴电极串21，22组成，每一Y轴电极串21，22是由多数的Y轴电极211，221相串组成；A Y-axis sensing layer YS, as shown in FIG. 2B, includes a plurality ofsensing rows 20, one end of eachsensing row 20 is provided with a Y-axis driving line 23, and eachsensing row 20 is composed of two or more parallel YAxis electrode strings 21, 22 are composed. In this embodiment, eachsensing line 20 is composed of two parallel Y-axis electrode strings 21, 22. Each Y-axis electrode string 21, 22 is composed of a plurality of Y-axis electrodes 211, 221 phase string composition;

前述X轴感应层XS及Y轴感应层YS可以同时形成在一基材的同一表面上，且该X轴感应层XS的各个X轴电极111，121与Y轴感应层YS的各个Y轴电极211，221的位置是作相间排列(请参考图3所示)，藉此构成一自容(Self Capacitance)型的投射式电容触控面板；请参考图1所示，于本实施例中，该X轴感应层XS、Y轴感应层YS是分别形成在两相对的基材30，40上；且其X轴电极111，121与Y轴电极211，221除位于两端者为三角形者，其余皆呈菱形。除上述形式，该X轴感应层XS及Y轴感应层YS可分别形成有一基材上相对的表底面，也可以分别形成有两基材的相对面上，而分别构成不同形式的自容型投射式电容触控面板。The aforementioned X-axis sensing layer XS and Y-axis sensing layer YS can be formed on the same surface of a substrate at the same time, and eachX-axis electrode 111, 121 of the X-axis sensing layer XS and each Y-axis electrode of the Y-axis sensing layer YS The positions of 211 and 221 are arranged alternately (please refer to FIG. 3), thereby forming a self-capacitance (Self Capacitance) type projected capacitive touch panel; please refer to FIG. 1, in this embodiment, The X-axis sensing layer XS and the Y-axis sensing layer YS are respectively formed on two opposite substrates 30, 40; and theX-axis electrodes 111, 121 and the Y-axis electrodes 211, 221 are triangular except those located at both ends. The rest are rhombus-shaped. In addition to the above-mentioned forms, the X-axis sensing layer XS and the Y-axis sensing layer YS can be formed with opposite surface and bottom surfaces on a substrate, respectively, and can also be formed with opposite surfaces of two substrates to form different forms of self-contained type. Projected capacitive touch panel.

除前述自容型外，本实用新型也适用在互容型的投射式电容触控面板上，其一种可行实施例在于令前述X轴感应层XS形成在一基材的表面，而Y轴感应层YS则形成在同一基材的相对底面上，且Y轴感应层YS上各Y轴电极211，221的位置是与基材表面所设各X轴电极111，121重迭，而构成一互容(Mutual Capacitance)型投射式电容触控面板。又前述X轴感应层XS、Y轴感应层YS也可以分别形成在两基材的相对面上，而构成另一种不同态样的自容型投射式电容触控面板。该等X轴电极111，121与Y轴电极211，221除前述的三角形、菱形外，也可以为矩形。In addition to the aforementioned self-capacitance type, the utility model is also applicable to a mutual-capacitance type projected capacitive touch panel, and a possible embodiment thereof is to form the aforementioned X-axis sensing layer XS on the surface of a substrate, and the Y-axis The sensing layer YS is formed on the opposite bottom surface of the same substrate, and the positions of the Y-axis electrodes 211, 221 on the Y-axis sensing layer YS are overlapped with theX-axis electrodes 111, 121 on the surface of the substrate, forming a Mutual Capacitance projected capacitive touch panel. Furthermore, the aforementioned X-axis sensing layer XS and Y-axis sensing layer YS can also be formed on opposite surfaces of the two substrates respectively to form another self-capacitance projected capacitive touch panel in a different form. TheX-axis electrodes 111 , 121 and the Y-axis electrodes 211 , 221 may also be rectangular in addition to the aforementioned triangle and rhombus.

再者，前述X轴感应层XS上每一感应列10的两X轴电极串11，12是相互并联，由于该等X轴电极串11，12由透明电极(ITO)构成而存在内阻，根据电阻公式，两电阻并联的阻值将小于两电阻各自原先的阻值(若两电阻的阻值不同，并联后阻值尚小于较低阻值电阻的阻值)，换言之，当将两X轴电极串11，12并联后，该感应列10的阻值将会降低；同理，前述Y轴感应层YS上每一感应行20的两Y轴电极串21，22也是相互并联，因此感应行20的阻值也会降低，藉此可以提高控制器判读的灵敏度。Furthermore, the twoX-axis electrode strings 11, 12 of eachsensing column 10 on the aforementioned X-axis sensing layer XS are connected in parallel with each other. Since theX-axis electrode strings 11, 12 are composed of transparent electrodes (ITO) and have internal resistance, According to the resistance formula, the resistance value of two resistors connected in parallel will be smaller than the original resistance value of the two resistors (if the resistance values of the two resistors are different, the resistance value after parallel connection will still be smaller than the resistance value of the lower resistance resistor), in other words, when two X After theaxis electrode strings 11, 12 are connected in parallel, the resistance value of thesensing row 10 will decrease; similarly, the two Y-axis electrode strings 21, 22 of eachsensing row 20 on the aforementioned Y-axis sensing layer YS are also connected in parallel with each other, so the sensing The resistance value ofline 20 will also be reduced, thereby improving the sensitivity of the controller's interpretation.

又如前揭所述，前述X轴感应层XS及Y轴感应层YS无论是形成在同一基材的表面、两面或分别形成在两基材的相对面上，必须进一步形成连接各感应列10、各感应行20的X，Y轴驱动线13，23，当面板尺寸愈大，愈接近面板边缘的感应列10、感应行20其X，Y轴驱动线13，23的长度愈长，与控制器连接埠的距离愈远，相对的线阻抗即愈大，同时也使各感应列10间与各感应行20间的内阻值不均，从而影响控制器判读的准确性，而上述问题也就是目前投射式电容触控面板尺寸无法加大的主要原因之一。As mentioned above, no matter whether the aforementioned X-axis sensing layer XS and Y-axis sensing layer YS are formed on the surface, both sides of the same substrate, or respectively formed on opposite surfaces of the two substrates, it is necessary to further form and connect thesensing rows 10 1. The X and Y-axis driving lines 13 and 23 of eachsensing row 20, when the size of the panel is larger, the closer to thesensing column 10 and sensingrow 20 at the edge of the panel, the X and Y-axis driving lines 13 and 23 have longer lengths, and The farther the distance between the controller connection port is, the greater the relative line impedance is, and at the same time, the internal resistance value between eachsensing column 10 and eachsensing row 20 is uneven, thereby affecting the accuracy of the controller's interpretation, and the above problems This is one of the main reasons why the size of the current projected capacitive touch panel cannot be increased.

而利用本实用新型的技术可有效降低各感应列10、各感应行20的内阻值，从而可降低各感应列10、各感应行20到控制器的整体线阻抗，故可相对提高控制器判读的准确性。And utilizing the technology of the present utility model can effectively reduce the internal resistance value of eachsensing row 10, eachsensing row 20, thereby can reduce eachsensing row 10, eachsensing row 20 to the overall line impedance of controller, so can relatively improve controller accuracy of interpretation.

以上所述仅是本实用新型的较佳实施例而已，并非对本实用新型做任何形式上的限制，虽然本实用新型已以较佳实施例揭露如上，然而并非用以限定本实用新型，任何熟悉本专业的技术人员，在不脱离本实用新型技术方案的范围内，当可利用上述揭示的技术内容作出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本实用新型技术方案的内容，依据本实用新型的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本实用新型技术方案的范围内。The above descriptions are only preferred embodiments of the utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not used to limit the utility model. Those skilled in the art, without departing from the scope of the technical solution of the utility model, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but all the technical solutions of the utility model do not depart from Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.

Claims (8)

1. a projecting type capacitor contact panel is characterized in that, described projecting type capacitor contact panel comprises:

One X-axis inductive layer comprises most induction row, and an end of each induction row is arranged with an X-axis drive wire, and each induction row is made up of X-axis electrode array in parallel more than two respectively again, and each X-axis electrode array is gone here and there mutually by the X-axis electrode of majority and formed;

One Y-axis inductive layer comprises most induction lines, and an end of each induction line is arranged with a Y-axis drive wire, and each induction line is made up of Y-axis electrode array in parallel more than two respectively again, and each Y-axis electrode array is gone here and there mutually by the Y-axis electrode of majority and formed.

2. projecting type capacitor contact panel according to claim 1 is characterized in that, the position of each X-axis electrode of described X-axis inductive layer and each Y-axis electrode of Y-axis inductive layer is to do alternately, to constitute a projecting type capacitor contact panel from the appearance type.

3. projecting type capacitor contact panel according to claim 1 is characterized in that, the position of each X-axis electrode of described X-axis inductive layer and each Y-axis electrode of Y-axis inductive layer is mutual overlapping, to constitute the projecting type capacitor contact panel of a mutual appearance type.

4. projecting type capacitor contact panel according to claim 2 is characterized in that, described X-axis inductive layer XS and Y-axis inductive layer YS are formed on the same surface of a base material simultaneously.

5. according to claim 2 or 3 described projecting type capacitor contact panels, it is characterized in that described X-axis inductive layer, Y-axis inductive layer are to be respectively formed on the two relative base materials.

6. according to claim 2 or 3 described projecting type capacitor contact panels, it is characterized in that described X-axis inductive layer, Y-axis inductive layer are to be respectively formed on the surface and relative bottom surface of a base material.

7. according to claim 2 or 3 described projecting type capacitor contact panels, it is characterized in that the X-axis electrode of described X-axis inductive layer and the Y-axis electrode on the Y-axis inductive layer are to assume diamond in shape.

8. projecting type capacitor contact panel according to claim 3 is characterized in that, the X-axis electrode of described X-axis inductive layer and the Y-axis electrode on the Y-axis inductive layer are rectangular.

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