CN218100202U - Capacitive touch screen and electronic equipment - Google Patents

Abstract

The embodiment of the application provides a capacitive touch screen and electronic equipment, and belongs to the technical field of touch control, the probability of matching of a touch electrode and a pin of a touch chip in a screen can be improved under the condition that the length-width ratio of the screen is large. A capacitive touch screen, comprising: a touch area; m transverse electrodes which are arranged along the x direction and extend along the y direction are arranged in the touch area, and each transverse electrode is divided into a first transverse electrode part and a second transverse electrode part which are mutually spaced in the y direction; the m first transverse electrode parts are electrically connected with m first touch electrode pins in the 2m first touch electrode pins in a one-to-one corresponding mode, and the m second transverse electrode parts are electrically connected with the other m first touch electrode pins in the 2m first touch electrode pins in a one-to-one corresponding mode; the n first longitudinal electrodes are electrically connected with the n second touch electrode pins in a one-to-one corresponding mode, and the n second longitudinal electrodes are electrically connected with the n second touch electrode pins in a one-to-one corresponding mode.

Description

Capacitive touch screen and electronic equipment

Technical Field

The application relates to the technical field of touch control, in particular to a capacitive touch screen and an electronic device.

Background

The capacitive touch screen is widely applied to human-computer interaction design of mobile phones, flat panels and notebooks. The capacitive touch screen is provided with a capacitive sensor, the capacitive sensor comprises a transverse electrode and a longitudinal electrode, for example, the transverse electrode is a driving electrode, the longitudinal electrode is an induction electrode, the driving electrode is electrically connected to a driving electrode pin in the touch chip, and the induction electrode is electrically connected to an induction electrode pin in the touch chip. However, in the current capacitive touch screen, the number ratio of the driving electrodes and the sensing electrodes is determined according to the length-width ratio of the screen, and in this case, if the length-width ratio of the screen is large, the total number of the driving electrodes and the sensing electrodes in the screen may not match with the driving electrode pins and the sensing electrode pins of the touch chip.

SUMMERY OF THE UTILITY MODEL

A capacitive touch screen and an electronic device can improve the probability of matching of a touch electrode in the screen and a pin of a touch chip under the condition that the length-width ratio of the screen is large.

In a first aspect, a capacitive touch screen is provided, comprising: a touch area; m transverse electrodes which are arranged along the x direction and extend along the y direction are arranged in the touch area, each transverse electrode is divided into a first transverse electrode part and a second transverse electrode part which are mutually spaced in the y direction, the y direction is perpendicular to the x direction, and m is larger than 1; n first longitudinal electrodes and n second longitudinal electrodes which are arranged along the y direction and extend along the x direction are also arranged in the touch area, the n first longitudinal electrodes are insulated and crossed with the m first transverse electrode parts, the n second longitudinal electrodes are insulated and crossed with the m second transverse electrode parts, n is more than 1,2n/m is more than or equal to 16/9; the touch control chip comprises 2m first touch control electrode pins and n second touch control electrode pins, one of the first touch control electrode pins and the second touch control electrode pins is a driving electrode pin, and the other of the first touch control electrode pins and the second touch control electrode pins is an induction electrode pin; the m first transverse electrode parts are electrically connected with m first touch electrode pins in the 2m first touch electrode pins in a one-to-one corresponding mode, and the m second transverse electrode parts are electrically connected with the other m first touch electrode pins in the 2m first touch electrode pins in a one-to-one corresponding mode; the n first longitudinal electrodes are electrically connected with the n second touch electrode pins in a one-to-one corresponding mode, and the n second longitudinal electrodes are electrically connected with the n second touch electrode pins in a one-to-one corresponding mode.

In one possible embodiment, each first longitudinal electrode is divided into a first longitudinal electrode part and a second longitudinal electrode part which are spaced from each other in the x direction, n first longitudinal electrode parts are insulated and crossed with one part of the first transverse electrode parts, and n second longitudinal electrode parts are insulated and crossed with the other part of the first transverse electrode parts; each second longitudinal electrode is divided into a third longitudinal electrode part and a fourth longitudinal electrode part which are mutually spaced in the x direction, n third longitudinal electrode parts are insulated and crossed on one part of the second transverse electrode parts, and n fourth longitudinal electrode parts are insulated and crossed on the other part of the second transverse electrode parts; the n first longitudinal electrode parts are electrically connected to the n second touch electrode pins in a one-to-one correspondence manner through signal wires located outside the touch area, the n second longitudinal electrode parts are electrically connected to the n second touch electrode pins in a one-to-one correspondence manner through signal wires located outside the touch area, the n third longitudinal electrode parts are electrically connected to the n second touch electrode pins in a one-to-one correspondence manner through signal wires located outside the touch area, and the n fourth longitudinal electrode parts are electrically connected to the n second touch electrode pins in a one-to-one correspondence manner through signal wires located outside the touch area.

In one possible embodiment, m is an even number, n first longitudinal electrode portions are insulatively crossed with m/2 first transverse electrode portions among the m first transverse electrode portions, n second longitudinal electrode portions are insulatively crossed with the other m/2 first transverse electrode portions among the m first transverse electrode portions, n third longitudinal electrode portions are insulatively crossed with m/2 second transverse electrode portions among the m second transverse electrode portions, and n fourth longitudinal electrode portions are insulatively crossed with the other m/2 second transverse electrode portions among the m second transverse electrode portions.

In one possible embodiment, the transverse electrodes are drive electrodes and the longitudinal electrodes are sense electrodes; the first touch electrode pin is a driving electrode pin, and the second touch electrode pin is an induction electrode pin.

In one possible embodiment, q third longitudinal electrodes arranged along the y direction and extending along the x direction are also arranged in the touch area, and n > q > 0; each third longitudinal electrode is divided into a fifth longitudinal electrode part and a sixth longitudinal electrode part which are spaced from each other in the x direction; the touch chip further comprises q second touch electrode pins, q fifth longitudinal electrode parts are electrically connected to the q second touch electrode pins in a one-to-one correspondence mode, and q sixth longitudinal electrode parts are electrically connected to the q second touch electrode pins in a one-to-one correspondence mode.

In one possible embodiment, each first longitudinal electrode extends from a first end to a second end of the touch area, the first end and the second end being opposite ends of the touch area; each second longitudinal electrode extends from the first end to the second end.

In one possible implementation mode, at the first end of the touch area, n first longitudinal electrodes are electrically connected to n second longitudinal electrodes in a one-to-one correspondence mode through signal lines located outside the touch area; at the second end of the touch area, the n first longitudinal electrodes are electrically connected to the n second touch electrode pins in a one-to-one correspondence manner through signal lines located outside the touch area.

In one possible embodiment, the y direction is a length direction of the capacitive touch screen, and the x direction is a width direction of the capacitive touch screen.

In a second aspect, an electronic device is provided, which includes the capacitive touch screen.

According to the capacitive touch screen and the electronic equipment in the embodiment of the application, the touch electrodes are segmented, and the segmented touch electrodes are connected with corresponding pins on the touch chip according to a specific mode, so that the probability of matching between the touch electrodes in the screen and the pins of the touch chip can be improved under the condition that the length-width ratio of the screen is large; in addition, in the embodiment of the application, the same transverse electrode is disconnected, so if one of the first transverse electrode part and the second transverse electrode part is disconnected in the middle, a suspended electrode block is formed, the influence of the suspended electrode block on a touch signal is large, and therefore the suspended electrode block is easier to detect, namely, an abnormality caused by the disconnection of the touch electrode is easier to find.

Drawings

Fig. 1 is a schematic structural diagram of a capacitive touch screen in the related art;

FIG. 2 is a schematic structural diagram of another capacitive touch screen in the related art;

FIG. 3 is a schematic structural diagram of another capacitive touch screen in the related art;

FIG. 4 is a schematic structural diagram of a partial electrode in a capacitive touch screen according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a capacitive touch screen in an embodiment of the present application;

fig. 6 is a schematic structural diagram of another part of electrodes in a capacitive touch screen according to an embodiment of the present application;

FIG. 7 is a schematic structural diagram of another capacitive touch screen in the embodiment of the present application;

FIG. 8 is a schematic structural diagram of another capacitive touch screen in an embodiment of the present application;

FIG. 9 is a schematic structural diagram of another capacitive touch screen according to an embodiment of the present application;

FIG. 10 is a schematic view of the structure of the electrode of FIG. 9;

FIG. 11 is another view corresponding to FIG. 9;

FIG. 12 is a schematic structural diagram of another capacitive touch screen in an embodiment of the present application;

fig. 13 is another schematic view corresponding to fig. 12.

Detailed Description

The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application.

Before describing the embodiments of the present application, a description will be given of a related art, and as shown in fig. 1, a size of a touch area of the touch screen 10 is X × Y, that is, a size of the touch area in an X direction is X, and a size of the touch area in a Y direction is Y. The touch screen 10 is provided with a horizontal electrode and a vertical electrode, which are coupled to form a mutual capacitance. Taking the transverse electrodes arranged along the X direction as driving electrodes and the longitudinal electrodes arranged along the y direction as sensing electrodes as an example, the distance between any two driving electrodes is pA, the distance between any two sensing electrodes is pB, the number of driving electrodes is m, m = X/pA, and the number of sensing electrodes is 2n,2n = y/pB. Touch chip 20 includes a plurality of chip pins including drive electrode pins TX1, TX2 \8230, TXM-1, TXM, and sense electrode pins RX1, RX2, \8230, RX2n-1, RX2n. The driving electrode pins are connected with the driving electrodes in a one-to-one corresponding mode, and the sensing electrode pins are connected with the sensing electrodes in a one-to-one corresponding mode. The driving electrode pins of the touch chip are used for outputting driving signals to the driving electrodes, the sensing electrode pins of the touch chip receive sensing signals output by the sensing electrodes, when fingers approach or touch the touch screen, mutual capacitance between the driving electrodes and the sensing electrodes is reduced, and therefore the sensing signals output by the sensing electrodes are influenced, and the touch chip calculates the position touched by a hand according to the sensing signals.

As shown in fig. 2, in another related art, in order to reduce the resistance of the whole circuit, two ends of a horizontal electrode and a vertical electrode in a touch screen are simultaneously connected to the same chip pin of a touch chip, and an example is given by using the horizontal electrode arranged along the x direction as a driving electrode and the vertical electrode arranged along the y direction as an induction electrode, where one end of a first driving electrode arranged along the x direction is connected to a driving electrode pin TX1 of the touch chip, the other end is also connected to a driving electrode pin TX1 of the touch chip, one end of a second driving electrode arranged along the x direction is connected to a driving electrode pin TX2 of the touch chip, the other end is also connected to a driving electrode pin TX2 of the touch chip, and so on, one end of an m-1 driving electrode arranged along the x direction is connected to a driving electrode pin TXm-1 of the touch chip, the other end is also connected to a driving electrode pin TXm of the touch chip, and the other end is also connected to a driving electrode pin m of the touch chip; one end of a first induction electrode arranged along the y direction is connected with an induction electrode pin RX1 of the touch chip, the other end of the first induction electrode is also connected with the induction electrode pin RX1 of the touch chip, one end of a second induction electrode arranged along the y direction is connected with an induction electrode pin RX2 of the touch chip, the other end of the second induction electrode is also connected with an induction electrode pin RX2 of the touch chip, and so on, one end of an m-1 induction electrode arranged along the y direction is connected with an induction electrode pin RXm-1 of the touch chip, the other end of the m induction electrode is also connected with an induction electrode pin RXm-1 of the touch chip, one end of an m induction electrode arranged along the y direction is connected with an induction electrode pin RXm of the touch chip, and the other end of the m induction electrode is also connected with an induction electrode pin RXm of the touch chip; the double-side outgoing line mode adopting the driving electrodes and the induction electrodes is that the same touch electrode is connected to the same chip pin of the touch chip at two ends of the same touch electrode, so that signal attenuation can be reduced, and performance can be improved.

The touch screens shown in fig. 1 and 2 are both strip-shaped touch screens, the length-width ratio of the strip-shaped touch screens is large, and the number of chip pins of the touch chip is poor in adaptability. The ratio of the number of the driving electrode pins and the number of the sensing electrode pins of the touch chip is generally matched with the length-width ratio (X: Y) of a conventional medium-sized and large-sized touch screen, wherein the length-width ratio is relatively small, for example, the length-width ratio is 1.2. In the field of automotive electronics, a central control screen in an automobile is generally a strip-shaped touch screen, the length-width ratio of the strip-shaped touch screen is usually large, for example, the length of the touch screen is 2 times of the width of the strip-shaped touch screen, at this time, required sensing electrode pins are 2 times of driving electrode pins, and a current touch chip cannot be matched with the strip-shaped touch screen, so that the touch chip is not usable. For example, the number of driving electrode pins of the touch chip is 88, and the number of sensing electrode pins is 68; when the touch screen is applied to a 17.3 inch touch screen, if the aspect ratio of the touch screen is 16:10, the space between the touch electrodes is designed to be about 4.2mm or less for touch performance, and the number of driving electrodes and the number of sensing electrodes required on the touch screen are at least 88 and 58 respectively. The touch chip can be adapted to the touch screen. If the 17.3-inch touch screen is used as a central control screen in an automobile, the length-width ratio of the touch screen is large, for example, 18:6, the space between the touch electrodes is designed to be about 4.2mm or less, the number of the driving electrodes required on the touch screen is at least 100, and the number of the sensing electrodes is at least 34. The number of driving electrode pins of a touch chip corresponding to the touch screen needs at least 100, and the number of sensing electrode pins needs at least 34. However, the number of the driving electrode pins of the touch chip is only 88, the number of the sensing electrode pins is 68, and the driving electrode and the sensing electrode in the touch screen cannot be matched with the driving electrode pins and the sensing electrode pins of the touch chip.

In addition, as shown in fig. 3, in the double-side outgoing line structure of the touch electrode, the double-side outgoing line means that two opposite ends of each of the driving electrode and the sensing electrode are connected to the touch chip through signal lines, and if the middle of the electrode correspondingly connected to the sensing electrode pin RX2n-2 is disconnected (the position of the circular dotted line circle) due to a process or other reasons, the disconnected position cannot be tested due to small data conversion, which results in poor performance.

In order to solve the above problems, the present application provides the following embodiments, and the technical solutions provided by the embodiments of the present application are described below.

The embodiment of the application provides a capacitive touch screen, include: a touch area in which m lateral electrodes arranged in an x direction and extending in a y direction are disposed, each lateral electrode being divided into a first lateral electrode portion and a second lateral electrode portion spaced apart from each other in the y direction, the y direction being perpendicular to the x direction, m > 1, the touch area being divided into a first area and a second area arranged in the y direction; the first region is provided with first transverse electrode parts which are arranged along the x direction and extend along the y direction; second transverse electrode parts which are arranged along the x direction and extend along the y direction are arranged in the second area; in the touch area, any first transverse electrode part and any second transverse electrode part are mutually spaced, the spacing distance between the first transverse electrode part and the second transverse electrode part is not limited, the smaller the distance between the first transverse electrode part and the second transverse electrode part is, the more accurate the touch control at the spacing position is, but the greater the process difficulty is, the greater the distance between the first transverse electrode part and the second transverse electrode part is, the lower the touch control precision at the spacing position is, but the smaller the process difficulty is, and the touch control method can be specifically set according to the needs; the touch area is also provided with n first longitudinal electrodes and n second longitudinal electrodes which are arranged along the y direction and extend along the x direction, the n first longitudinal electrodes are insulated and crossed with the m first transverse electrode parts, the n second longitudinal electrodes are insulated and crossed with the m second transverse electrode parts, n is more than 1,2n/m is more than or equal to 16/9, namely in a structure with the screen size being close to the touch electrode interval, the size ratio of the touch screen is more than or equal to 16. To illustrate, taking transverse electrodes arranged along the x direction as driving electrodes, and first and second longitudinal electrodes arranged along the y direction as sensing electrodes, as shown in fig. 4 and 5, fig. 5 illustrates the arrangement relationship of the electrodes in fig. 4, but for the sake of simplicity and convenience of viewing, the region in fig. 4 is not marked in fig. 5, m driving electrodes 100 arranged along the x direction and extending along the y direction are disposed in the touch region 1, and each driving electrode 100 is divided into a first driving electrode part 101 and a second driving electrode part 102 spaced from each other in the y direction; the touch area 1 is divided into a first area 11 and a second area 12 in the y direction; first drive electrode portion 101 is located at first region 11 and second drive electrode portion 102 is located at second region 12; as shown in fig. 5 and fig. 6, fig. 5 illustrates the arrangement relationship of the electrodes in fig. 6, but for the sake of simplicity and convenience of viewing, the area in fig. 6 is not marked in fig. 5, n first sensing electrodes 201 arranged along the y direction are further disposed in the touch area 1, the n first sensing electrodes 201 are located in the first area, the first sensing electrodes 201 are insulated and crossed with the first driving electrode portion 101, and n > 1; n second sensing electrodes 202 arranged along the y direction are further arranged in the touch area 1, the n second sensing electrodes 202 are located in the second area, and the second sensing electrodes 202 are insulated and crossed with the second driving electrode part 102; the touch chip 20 includes a driving electrode pin and a sensing electrode pin; the driving electrode pins are used for being connected with a first driving electrode part and a second driving electrode part of a touch area, the number of the driving electrode pins at least comprises 2m, wherein the 2m driving electrode pins are TX1, TX2, \ 8230, TXM-1, TXM +1, TXM +2, \\ 8230, TX2m-1, TX2m and 2m driving electrode pins are respectively connected with m first driving electrode parts 101 and m second driving electrode parts 102 in a one-to-one correspondence mode, namely the m first driving electrode parts 101 are electrically connected with m driving electrode pins 1, TX2, \\ 8230in the 2m driving electrode pins in a one-to-one correspondence mode, the m second driving electrode parts 102 are electrically connected with the other TX m driving electrode pins TXM +1, TXM +2, \ 8230, 2m-1 and 2m driving electrode pins in the 2m driving electrode pins in a one-to-one correspondence mode; the number of the sensing electrode pins at least comprises n, wherein the n sensing electrode pins are RX1, RX2, 8230, RXn-1 and RXn respectively, the sensing electrode pins are used for being connected with a first sensing electrode 201 and a second sensing electrode 202 on a touch area 1, the n sensing electrode pins are electrically connected with the n first sensing electrodes 201 in a one-to-one correspondence manner respectively, and the n sensing electrode pins are electrically connected with the n second sensing electrodes 202 in a one-to-one correspondence manner respectively, namely, the n sensing electrode pins are multiplexed.

It should be noted that, in fig. 5, electrode pins having the same reference number in the touch chip 20 are the same pin, for example, although 4 reference numbers RX1 are illustrated, actually, the 4 RX1 s all represent the same pin on the touch chip 20, and the same pin is labeled at a plurality of positions only for simplifying the routing between the electrode and the touch chip 20. As can be seen from fig. 3 and 5, in a structure in which the screen size and the touch electrode spacing are close, the number of the sensing electrode pins required by the touch chip in the related art is m and 2n, respectively, in the embodiment of the present application, the number of the different types of touch electrode pins required by the touch chip in the related art is 2m and n, respectively, that is, the probability of matching the touch electrode with the pins of the touch chip in the screen can be increased in the case that the ratio of the screen length to the width is large, for example, the ratio of the 17.3 inches to the screen length to the width is 18, the number of the driving electrode pins of the touch chip is 88, and the number of the sensing electrode pins is 68, if the touch electrode setting manner in the related art is used, the number of the required driving electrode is at least 100, the number of the sensing electrode is at least 34, the pins of the touch chip and the electrodes cannot be matched, and if the touch electrode setting manner in the embodiment of the present application is used, the number of the required driving electrode is at least 50, the number of the sensing electrode pins is 68, and the number of the sensing electrode pins is at least 68, and the ratio of the sensing electrode pins is smaller, and the aspect ratio of the sensing electrode is more easily satisfied in the present application; in addition, in the embodiment of the present application, the driving electrode itself is disconnected, so if one of the first driving electrode part and the second driving electrode part is disconnected in the middle, a floating electrode block is formed, and the floating electrode block has a greater influence on the touch signal, so that the touch signal is more easily detected, that is, an abnormality caused by the disconnection of the touch electrode is more easily found.

In one possible embodiment, as shown in fig. 5, each of the first sensing electrodes 201 is divided into a first sensing electrode part 21 and a second sensing electrode part 22 spaced apart from each other in the x-direction, n first sensing electrode parts 21 cross over a part of the first driving electrode parts 101 in an insulated manner, n second sensing electrode parts 22 cross over another part of the first driving electrode parts 101 in an insulated manner; each second sensing electrode 202 is divided into a third sensing electrode part 23 and a fourth sensing electrode part 24 which are spaced apart from each other in the x direction, n third sensing electrode parts 23 are insulated and crossed with one part of the second driving electrode part 102, and n fourth sensing electrode parts 24 are insulated and crossed with the other part of the second driving electrode part 102; as shown in fig. 6, the touch area 1 is divided into a third area 13 and a fourth area 14 arranged in the x direction; the third sensing electrode part 23 and the first sensing electrode part 21 are located in the third region 13, and the second sensing electrode part 22 and the fourth sensing electrode part 24 are located in the fourth region 14; as shown in fig. 5, the n first sensing electrode portions 21 are electrically connected to the n sensing electrode pins RX1, RX2, \8230, RXn-1, RXn, the n second sensing electrode portions 22 are electrically connected to the n sensing electrode pins RX1, RX2, \8230, RXn-1, RXn through the signal lines outside the touch region 1, respectively; the n third sensing electrode portions 23 are electrically connected to the n sensing electrode pins RX1, RX2, \8230, RXn-1, RXn, and n fourth sensing electrode portions 24 through signal lines outside the touch region 1, respectively, and the n first sensing electrode portions 21, the ith second sensing electrode portions 22, the ith third sensing electrode portions 23, and the ith fourth sensing electrode portions 24 are electrically connected to the ith sensing electrode pin RXi through signal lines outside the touch region 1, respectively, and the values of i are 1,2, \\8230, n. Touch electrodes in the same row and the same column are disconnected, so if one of the first sensing electrode part 21, the second sensing electrode part 22, the third sensing electrode part 23 or the fourth sensing electrode part 24 is disconnected in the middle, a floating electrode block is formed, and the floating electrode block has a greater influence on a touch signal, so that the touch signal is more easily detected, that is, an abnormality caused by the disconnection of the touch electrodes is more easily found.

In one possible embodiment, as shown in fig. 5, m is an even number, and in the overlapping area of the first area and the third area, i.e., the lower left corner area, m/2 first driving electrode parts 101 of the m first driving electrode parts 101 are insulated and crossed with the n first sensing electrode parts 21, so as to detect the touch position of the area through mutual capacitance between different types of electrodes; in the overlapping region of the second region and the third region, i.e., the lower right corner region, m/2 second drive electrode parts 102 of the m second drive electrode parts 102 are insulated and crossed with the n third sensing electrode parts 23, so as to detect the touch position of the region through mutual capacitance between different types of electrodes; in an overlapping region of the first region and the fourth region, that is, an upper left corner region, the other m/2 first driving electrode parts 101 of the m first driving electrode parts 101 are insulated and crossed with the n second sensing electrode parts 22, so that the touch position of the region is detected through mutual capacitance between different types of electrodes; in the overlapping area of the second area and the fourth area, i.e., the upper right corner area, the other m/2 second drive electrode parts 102 of the m second drive electrode parts 102 are insulated and crossed with the n fourth sensing electrode parts 24, so as to detect the touch position of the area through mutual capacitance between different types of electrodes.

In a possible embodiment, the transverse electrode is a driving electrode, and the first longitudinal electrode and the second longitudinal electrode are sensing electrodes; the corresponding TX is a driving electrode pin, and the RX is a sensing electrode pin, which is taken as an example in the embodiments of the present application, and in other possible ways, the driving electrode and the sensing electrode may be exchanged, and the corresponding driving electrode pin and the sensing electrode pin are correspondingly exchanged.

In some possible embodiments, the division position of the driving electrode into two driving electrode portions may be the middle position of the electrode, i.e. the division of the first and second regions may be in the middle position of the touch region, but in other possible embodiments, the division of the driving electrode may also be in a position deviating from the middle, i.e. the division of the first and second regions may be in a position deviating to the left or to the right; similarly, the dividing position of the sensing electrode may be in the middle position, or may be in a position deviated from the middle position, that is, the division of the third region and the fourth region may be in an upper or lower position. For example, as shown in fig. 7, q third sensing electrodes 203 (dot-filled electrodes) arranged in the y direction and extending in the x direction are also disposed in the touch area 1, where n > q > 0; each of the third sensing electrodes 203 is divided into a fifth sensing electrode part 25 and a sixth sensing electrode part 26 spaced apart from each other in the x-direction; the touch chip 20 further includes q sensing electrode pins, for example, RXq1 and RXq2, q fifth sensing electrode portions 25 are electrically connected to the q sensing electrode pins RXq1 and RXq2 in a one-to-one correspondence, respectively, and q sixth sensing electrode portions 26 are electrically connected to the q sensing electrode pins RXq1 and RXq2 in a one-to-one correspondence, respectively.

In one possible embodiment, as shown in fig. 8, the capacitive touch screen further includes: a flexible circuit board 3; the touch chip 20 is electrically connected to the electrodes through the traces in the flexible circuit board 3. Specifically, each electrode and trace of the capacitive touch screen may be disposed on a substrate such as glass, a semiconductor Film or PI, the touch chip 20 may be disposed on the flexible circuit board 3 or another type of circuit board, and the flexible circuit board 3 and the electrode of the touch screen may be bonded (bonded) together by an Anisotropic Conductive Film (ACF) to form an electrical connection.

In one possible embodiment, the y direction is a length direction of the capacitive touch screen, and the x direction is a width direction of the capacitive touch screen.

In one possible embodiment, as shown in fig. 9, 10 and 11, the first sensing electrode 201 extends from a first end (lower end) to a second end (upper end) of the touch area 1, the first end and the second end being opposite ends of the touch area 1; each second sensing electrode 202 extends from a first end to a second end. In this structure, the first sensing electrode 201 and the second sensing electrode 202 are unbroken complete electrodes in the x direction, so that the routing is simpler when connecting to the touch chip 2 outside the touch area 1, and the space of the frame area is saved.

In one possible embodiment, as shown in fig. 12 and 13, at a first end of the touch area 1, n first sensing electrodes 201 are electrically connected to n second sensing electrodes 202 in a one-to-one correspondence through signal lines located outside the touch area 1; at the second end of the touch area 1, the n first sensing electrodes 201 are electrically connected to the n sensing electrode pins RX1, RX2, \ 8230, RXn-1, RXn in a one-to-one correspondence manner through signal lines located outside the touch area 1. For example, above the touch area 1, the ith first sensing electrode 201 is electrically connected to the ith second sensing electrode 202, and below the touch area 1, the ith first sensing electrode 201 is electrically connected to the ith sensing electrode pin RXi, where i has a value of 1,2, \ 8230;, n. The touch chip 20 is located at a first end, i.e., a lower side, of the touch area 1. Because the touch chip 20 is located at the lower side of the touch area 1, more signal lines are gathered at the lower side of the touch area 1, and therefore, the structure can reduce the occupation of the wiring space at the lower side of the touch area 1, thereby being more beneficial to the design of a narrow frame.

The embodiment of the application further provides an electronic device, which comprises the capacitive touch screen in each embodiment, and the specific structure and principle of the capacitive touch screen are not described in detail. The electronic device can be any electronic device with a touch display function, such as a mobile phone, a tablet computer, a notebook computer or a television.

In the embodiments of the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, and means that there may be three relationships, for example, a and/or B, and may mean that a exists alone, a and B exist simultaneously, and B exists alone. Wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" and similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one of a, b, and c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (9)

1. A capacitive touch screen, comprising:

a touch area;

m transverse electrodes which are arranged along the x direction and extend along the y direction are arranged in the touch area, each transverse electrode is divided into a first transverse electrode part and a second transverse electrode part which are spaced from each other in the y direction, the y direction is perpendicular to the x direction, and m is larger than 1;

the touch area is also provided with n first longitudinal electrodes and n second longitudinal electrodes which are arranged along the y direction and extend along the x direction, the n first longitudinal electrodes are insulated and crossed with the m first transverse electrode parts, the n second longitudinal electrodes are insulated and crossed with the m second transverse electrode parts, n is more than 1,2n/m is more than or equal to 16/9;

the touch control chip comprises 2m first touch control electrode pins and n second touch control electrode pins, wherein one of the first touch control electrode pins and the second touch control electrode pins is a driving electrode pin, and the other one of the first touch control electrode pins and the second touch control electrode pins is an induction electrode pin;

the m first transverse electrode parts are electrically connected with m first touch electrode pins in the 2m first touch electrode pins in a one-to-one corresponding manner, and the m second transverse electrode parts are electrically connected with the other m first touch electrode pins in the 2m first touch electrode pins in a one-to-one corresponding manner;

the n first longitudinal electrodes are electrically connected with the n second touch electrode pins in a one-to-one corresponding mode, and the n second longitudinal electrodes are electrically connected with the n second touch electrode pins in a one-to-one corresponding mode.

2. A capacitive touch screen according to claim 1,

each first longitudinal electrode is divided into a first longitudinal electrode part and a second longitudinal electrode part which are mutually spaced in the x direction, n first longitudinal electrode parts are insulated and crossed with one part of the first transverse electrode parts, and n second longitudinal electrode parts are insulated and crossed with the other part of the first transverse electrode parts;

each second longitudinal electrode is divided into a third longitudinal electrode part and a fourth longitudinal electrode part which are mutually spaced in the x direction, n third longitudinal electrode parts are insulated and crossed with one part of the second transverse electrode parts, and n fourth longitudinal electrode parts are insulated and crossed with the other part of the second transverse electrode parts;

the n first longitudinal electrode portions are electrically connected to the n second touch electrode pins in a one-to-one correspondence manner through signal lines located outside the touch area, the n second longitudinal electrode portions are electrically connected to the n second touch electrode pins in a one-to-one correspondence manner through signal lines located outside the touch area, the n third longitudinal electrode portions are electrically connected to the n second touch electrode pins in a one-to-one correspondence manner through signal lines located outside the touch area, and the n fourth longitudinal electrode portions are electrically connected to the n second touch electrode pins in a one-to-one correspondence manner through signal lines located outside the touch area.

3. A capacitive touch screen according to claim 2,

m is an even number, n of the first vertical electrode portions cross over m/2 of the m first horizontal electrode portions in an insulated manner, n of the second vertical electrode portions cross over the other m/2 of the m first horizontal electrode portions in an insulated manner, n of the third vertical electrode portions cross over m/2 of the m second horizontal electrode portions in an insulated manner, and n of the fourth vertical electrode portions cross over the other m/2 of the m second horizontal electrode portions in an insulated manner.

4. A capacitive touch screen according to claim 1,

the transverse electrode is a driving electrode, and the longitudinal electrode is an induction electrode;

the first touch electrode pin is a driving electrode pin, and the second touch electrode pin is an induction electrode pin.

5. A capacitive touch screen according to claim 2,

q third longitudinal electrodes which are arranged along the y direction and extend along the x direction are also arranged in the touch area, and n is more than q and is more than 0;

each of the third longitudinal electrodes is divided into a fifth longitudinal electrode portion and a sixth longitudinal electrode portion spaced from each other in the x direction;

the touch chip further comprises q second touch electrode pins, q fifth longitudinal electrode parts are electrically connected to the q second touch electrode pins in a one-to-one correspondence manner, and q sixth longitudinal electrode parts are electrically connected to the q second touch electrode pins in a one-to-one correspondence manner.

6. A capacitive touch screen according to claim 1,

each first longitudinal electrode extends from a first end to a second end of the touch area, the first end and the second end being opposite ends of the touch area;

each of the second longitudinal electrodes extends from the first end to the second end.

7. A capacitive touch screen according to claim 6,

at the first end of the touch area, the n first longitudinal electrodes are electrically connected to the n second longitudinal electrodes in a one-to-one correspondence manner through signal lines positioned outside the touch area;

at the second end of the touch area, the n first longitudinal electrodes are electrically connected to the n second touch electrode pins in a one-to-one correspondence manner through signal lines located outside the touch area.

8. A capacitive touch screen according to claim 1,

the y direction is the length direction of the capacitive touch screen, and the x direction is the width direction of the capacitive touch screen.

9. An electronic device characterized by comprising a capacitive touch screen according to any one of claims 1 to 8.

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