CN211979642U - Capacitive diaphragm, capacitive touch screen and electronic equipment - Google Patents
Capacitive diaphragm, capacitive touch screen and electronic equipment Download PDFInfo
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- CN211979642U CN211979642U CN202020531655.2U CN202020531655U CN211979642U CN 211979642 U CN211979642 U CN 211979642U CN 202020531655 U CN202020531655 U CN 202020531655U CN 211979642 U CN211979642 U CN 211979642U
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Abstract
The application belongs to the technical field of touch control, and particularly relates to a capacitive diaphragm, a capacitive touch screen and electronic equipment, wherein the capacitive diaphragm comprises a plurality of mutually parallel driving channels and a plurality of mutually parallel receiving channels, each driving channel is at least provided with a driving end, and each driving channel comprises a plurality of driving electrode plates which are sequentially connected along a first direction; the receiving channel comprises a plurality of receiving electrode plates which are sequentially connected along a second direction; the area of the driving electrode plates on the driving channel is increased along with the increase of the distance between the driving electrode plates and the target driving end, and/or the area of the receiving electrode plates which are positioned on the same row and arranged along the first direction is increased along with the increase of the distance between the receiving electrode plates and the target driving end.
Description
Technical Field
The application belongs to the technical field of touch control, and particularly relates to a capacitive diaphragm, a capacitive touch screen and an electronic device.
Background
Along with the rapid development of the capacitance scheme, the capacitive touch screen is favored by more and more people, and large-size capacitive touch screen interactive intelligent products in the market are various according to the requirements of people on learning, life and work. The capacitive touch screen comprises a plurality of driving electrode plates and a plurality of receiving electrode plates, the adjacent first electrode plates and the adjacent second electrode plates form coupling capacitors, when touch points exist on the capacitive touch screen, the coupling capacitors can change, and the driving chip can detect the change of the coupling capacitors to acquire the coordinates of the touch points.
In the prior art, although the capacitive diaphragm is made of a material with a relatively low resistance as the driving electrode plate, a resistance value of a driving channel formed by the driving electrode plate cannot be ignored, the resistance value of the driving channel can cause a driving voltage far away from the driving end to be smaller than a driving voltage near the driving end, and when the driving voltages on the capacitive touch screen are inconsistent, response times of the capacitive touch screen to touch are inconsistent, so that if the touch points are located at different positions of the capacitive touch screen, the response times of the capacitive touch screen to different touch points are possibly different, and user operation experience is poor.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the application provides a capacitive diaphragm, a capacitive touch screen and an electronic device, so as to solve the problem that the response time of the existing capacitive touch screen to different touch points is different, which results in poor user operation experience.
A first aspect of an embodiment of the present application provides a capacitive diaphragm, including:
the device comprises a plurality of mutually parallel driving channels and a plurality of mutually parallel receiving channels, wherein each driving channel is at least provided with a driving end;
the driving channel comprises a plurality of driving electrode plates which are sequentially connected along a first direction; the receiving channel comprises a plurality of receiving electrode plates which are sequentially connected along a second direction;
the area of a driving electrode plate on the driving channel is increased along with the increase of the distance between the driving electrode plate and a target driving end, wherein the target driving end is the driving end, which is closest to the driving electrode plate, on the driving channel; and/or
The area of the receiving electrode pieces, which are positioned in the same row and arranged in the first direction, increases as the distance between the receiving electrode pieces and a target driving end increases, wherein the target driving end is the driving end closest to the driving electrode piece corresponding to the receiving electrode pieces, and the receiving electrode pieces are adjacent to the driving electrode pieces.
A second aspect of the present embodiment provides a capacitive touch screen, including the capacitive diaphragm and the control chip as described in the first aspect of the present embodiment, a driving end of each driving channel is electrically connected to the control chip, and a receiving end of each receiving channel is electrically connected to the control chip.
A third aspect of the embodiments of the present application provides an electronic device, including the capacitive touch screen according to the second aspect of the embodiments of the present application.
According to the capacitive diaphragm, the capacitive touch screen and the electronic device, the capacitive diaphragm comprises a plurality of mutually parallel driving channels and a plurality of mutually parallel receiving channels, each driving channel is at least provided with one driving end, one end of each receiving channel is provided with a receiving end, and each driving channel comprises a plurality of driving electrode plates which are sequentially connected along a first direction; the receiving channel comprises a plurality of receiving electrode plates which are sequentially connected along a second direction; the area of the driving electrode plates on the driving channel is increased along with the increase of the distance between the driving electrode plates and the target driving end, and/or the area of the receiving electrode plates which are positioned in the same row and arranged along the first direction is increased along with the increase of the distance between the receiving electrode plates and the target driving end, if the driving end is connected with a driving signal source, the receiving end is connected with the receiving signal source, adjacent driving electrode plates and receiving electrode plates can form a coupling capacitor, the electric charge quantity carried by the coupling capacitor is the product of the driving voltage and the coupling capacitance value, and the driving voltage of the coupling capacitor is gradually reduced along with the increase of the distance between the coupling capacitor and the target driving end, so that if the area of the driving electrode plates on the driving channel is increased along with the increase of the distance between the driving electrode plates and the target driving end, and/or the area of the receiving electrode plates which are positioned in the same row The distance increase and increase, the coupling capacitance value that drive electrode slice and adjacent receiving electrode slice are constituteed can increase along with the distance increase between coupling capacitance and the target drive end, the electric charge amount that coupling capacitance carried on the capacitive touch screen can be equal everywhere, because capacitive touch screen is positive correlation to the electric charge amount that response time and the touch point position of touch point correspond of touch point, when capacitive touch screen goes up that the electric charge amount everywhere that coupling capacitance carried is equal, then capacitive touch screen is the same to the response time of different touch points, can promote user operation experience.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic diagram of a first structure of a capacitive diaphragm provided in an embodiment of the present application;
FIG. 2 is a schematic diagram of a second structure of a capacitive diaphragm provided in an embodiment of the present application;
FIG. 3 is a schematic diagram of a third structure of a capacitive diaphragm provided in an embodiment of the present application;
FIG. 4 is a schematic diagram of a fourth structure of a capacitive diaphragm provided in an embodiment of the present application;
FIG. 5 is a schematic diagram of a fifth structure of a capacitive diaphragm provided in an embodiment of the present application;
FIG. 6 is a schematic diagram illustrating a sixth structure of a capacitive diaphragm according to an embodiment of the present disclosure;
FIG. 7 is a schematic diagram of a first structure of a capacitive touch screen according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a second capacitive touch screen according to an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known structures and steps are omitted so as not to obscure the description of the present application with unnecessary detail.
It is to be noted that the term "comprises" and any variants thereof in the description and claims of this application are intended to cover non-exclusive inclusions. Such as a system comprising a series of elements, a product, or steps not listed.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
Example one
The embodiment of the application provides a capacitive diaphragm, which can be applied to a capacitive touch screen.
To illustrate the above capacitive diaphragm, the following detailed description is made with reference to specific embodiments:
fig. 1-6 illustrate the capacitive diaphragm provided herein, showing only the portions relevant to the present embodiment for ease of illustration.
Referring to fig. 1-6, a capacitive diaphragm according to an embodiment of the present application includes:
the device comprises a plurality of mutually parallel driving channels 10 and a plurality of mutually parallel receiving channels 20, wherein each driving channel 10 is provided with at least one driving end, and one end of each receiving channel 20 is provided with a receiving end.
In application, the driving channel 10 and the receiving channel 20 may be made of ITO (Indium Tin oxide), conductive glass, nano silver wire or metal mesh, or the like.
It is understood that the driving electrode pieces 1 may have different shapes, such as a diamond shape, a rectangular shape, a triangular shape, etc., and the shapes of the driving electrode pieces 1 may be the same or different. In this embodiment, the driving electrode pieces 1 are in a diamond shape, and the shapes of all the driving electrode pieces 1 are the same.
It will be appreciated that each of the drive channels 10 may be provided with one or two drive ends.
The driving channel 10 comprises a plurality of driving electrode plates which are sequentially connected along a first direction; the receiving channel 20 includes a plurality of receiving electrode pads 2 connected in sequence along the second direction.
In application, the first direction and the second direction may be perpendicular.
It is understood that the driving channel 10 may be an elongated structure formed by connecting the driving electrode sheets 1 in sequence along the first direction, and it should be noted that the connecting portion and the driving electrode sheets 1 may be an integrally formed structure.
It will be appreciated that the receiver electrode pads 2 may be of different shapes, such as diamond, rectangular or triangular, and the shape of the receiver electrode pads 2 may be the same or different. In this embodiment, the receiver electrode pads 2 are diamond-shaped, and the shapes of all the receiver electrode pads 2 are the same.
It is to be understood that the receiving channel 20 may be an elongated structure formed by connecting the receiving electrode pads 2 in sequence along the second direction, and it should be noted that the connecting portion and the receiving electrode pads 2 may be an integrally formed structure.
In application, the driving channels 10 are arranged in an insulated manner, the receiving channels 20 are arranged in an insulated manner, and the adjacent driving electrode plates 1 and receiving electrode plates 2 can form self-coupling capacitors.
The area of the driving electrode plate 1 on the driving channel 10 increases with the distance between the driving electrode plate 1 and a target driving end, wherein the target driving end is the driving end closest to the driving electrode plate 1 on the driving channel 10; and/or
The area of the receiving electrode pieces 2, which are positioned in the same row and arranged in the first direction, increases as the distance between the receiving electrode pieces 2 and a target driving end increases, wherein the target driving end is the driving end closest to the driving electrode piece 1 corresponding to the receiving electrode piece 2, and the receiving electrode piece 2 is adjacent to the driving electrode piece 1.
It will be appreciated that the receiver electrode pads 2 on the capacitive diaphragm are arranged in an array, with the receiver electrode pads 2 arranged in a first direction being in a row and the receiver electrode pads 2 arranged in a second direction being in a column. Any one column of sequentially connected receiving electrode pads 2 may constitute one receiving channel 20.
In one embodiment, when only one driving end is provided for each driving channel 10, the areas of the plurality of driving electrode pieces 1 gradually increase along a first direction and/or the areas of the plurality of receiving electrode pieces 2 gradually increase along the first direction, wherein the first direction is a direction from the driving end to a non-driving end.
It is to be understood that the present embodiment does not limit the area of all the driving electrode sheets 1 to be gradually increased along the first direction and/or the area of all the receiving electrode sheets 2 to be gradually increased along the first direction, and may be a portion of the area of the driving electrode sheets 1 and/or the area of the receiving electrode sheets 2 to be gradually increased along the first direction.
In one embodiment, when the two ends of each driving channel 10 are respectively provided with a first driving end and a second driving end, the areas of the plurality of driving electrode pieces 1 gradually increase along a first direction and then gradually decrease, and/or the areas of the plurality of receiving electrode pieces 2 gradually increase along the first direction and then gradually decrease, wherein the first direction is a direction from the first driving end to the second driving end.
It can be understood that the present embodiment does not limit the areas of all the driving electrode sheets 1 to gradually increase along the first direction and then gradually decrease, and/or the areas of all the receiving electrode sheets 2 to gradually increase along the first direction and then gradually decrease, and the areas of some rows of driving electrode sheets 1 and/or the areas of some rows of receiving electrode sheets 2 to gradually increase along the first direction and then gradually decrease.
The driving end scheme is arranged at both ends of the driving channel 10, and in application, the capacitor diaphragm can be symmetrical along the central axis, and the central axis can be parallel to the second direction. That is, the areas of the plurality of receiving electrode pads 2 and/or the areas of the driving electrode pads 1 may be sequentially increased from both ends of the capacitive diaphragm toward the middle.
The first embodiment of the present application provides a capacitive diaphragm, where if the diaphragm is connected to a driving signal source and a receiving signal source, adjacent driving electrode pads and receiving electrode pads may form a coupling capacitor, because a driving channel has a non-negligible resistance value, and a driving voltage of the coupling capacitor gradually decreases with an increase in a distance between the coupling capacitor and a target driving end, so that when an area of the driving electrode pad on the driving channel increases with an increase in a distance between the driving electrode pad and the target driving end, and/or an area of the receiving electrode pads located in a same row and arranged along a first direction increases with an increase in a distance between the receiving electrode pads and the target driving end, a coupling capacitance value formed by the driving electrode pad and the adjacent receiving electrode pad may increase with an increase in a distance between the coupling capacitor and the target driving end, and an amount of electric charge carried by the coupling capacitor on the capacitive touch screen may be equal everywhere, because the response time of the capacitive touch screen to the touch point is positively correlated with the charge amount corresponding to the position of the touch point, when the charge amount carried by the coupling capacitor on the capacitive touch screen is equal everywhere, the response time of the capacitive touch screen to different touch points is the same, and the user operation experience can be improved.
Example two
The capacitive diaphragm provided in the embodiments of the present application is only shown in the portions related to the present embodiment for convenience of description.
In this embodiment, the capacitive diaphragm is configured as a single-drive scheme, one end of each driving channel 10 is configured as a first driving end, the other end of each driving channel 10 is configured as a non-driving end, and the first direction is a direction from the first driving end to the non-driving end.
In one embodiment, as shown in fig. 1, each of the driving electrode pieces 1 has an area equal to that of an adjacent receiving electrode piece 2, and the areas of a plurality of the driving electrode pieces 1 are gradually increased in the first direction and the areas of a plurality of the receiving electrode pieces 2 are gradually increased in the first direction.
It will be appreciated that each drive electrode pad 1 has at least one corresponding receiving electrode pad 2, and that the drive electrode pad 1 is adjacent to the corresponding receiving electrode pad 2. For example, all the drive electrode pads 1 are diamond-shaped, one drive electrode pad 1 has four adjacent receiving electrode pads 2, and the area of the drive electrode pad 1 is equal to that of at least one receiving electrode pad 2.
Illustratively, the areas of the driving electrode pieces 1 in the same column are not equal, and the areas of the driving electrode pieces 1 and one adjacent receiving electrode piece 2 are equal; or the areas of the driving electrode pieces 1 in the same row are equal, and the areas of the driving electrode pieces 1 are equal to the areas of the adjacent two receiving electrode pieces 2 in the same row.
In one embodiment, referring to fig. 2, the area of each of the receiving electrode pieces 2 is gradually increased along the first direction, and the area of each of the driving electrode pieces 1 is greater than or equal to the area of the largest receiving electrode piece 2.
In application, all the driving electrode sheets 1 may have the same area.
It can be understood that adjacent driving electrode slices 1 and receiving electrode slices 2 may form a coupling capacitor, the size of the coupling capacitor is positively correlated with the facing area of the adjacent driving electrode slices 1 and receiving electrode slices 2, and when the area of each driving electrode slice 1 is greater than or equal to the largest area of the receiving electrode slice 2, the size of the coupling capacitor is positively correlated with the area of the receiving electrode slice.
In one embodiment, referring to fig. 3, the areas of the plurality of driving electrode pieces 1 are gradually increased along the first direction, and the area of each receiving electrode piece 2 is greater than or equal to the area of the largest driving electrode piece 1.
In application, all receiving electrode pads 2 may be equal in area.
It can be understood that the adjacent driving electrode pieces 1 and receiving electrode pieces 2 may form a coupling capacitor, the size of the coupling capacitor is positively correlated with the facing area of the adjacent driving electrode pieces 1 and receiving electrode pieces 2, and when the area of each receiving electrode piece 2 is greater than or equal to the largest area of the driving electrode piece 1, the size of the coupling capacitor is positively correlated with the area of the driving electrode piece 1.
The embodiment of the application provides a capacitor diaphragm, wherein the area of each driving electrode plate is equal to the area of an adjacent receiving electrode plate, the areas of a plurality of driving electrode plates are gradually increased along a first direction, and the areas of a plurality of receiving electrode plates are gradually increased along the first direction; or the areas of the plurality of receiving electrode sheets are gradually increased along a first direction, the area of each driving electrode sheet is larger than or equal to the area of the largest receiving electrode sheet, or the areas of the plurality of driving electrode sheets are gradually increased along the first direction, and the area of each receiving electrode sheet is larger than or equal to the area of the largest driving electrode sheet; if the drive end is connected with the drive signal source, the receiving terminal is connected with the receiving signal source, adjacent drive electrode piece and receiving electrode piece can form coupling capacitance, the coupling capacitance value that drive electrode and adjacent receiving electrode piece are constituteed can be followed first direction and increased gradually, so that the electric charge amount that coupling capacitance carried can be equal everywhere on the capacitive touch screen, because capacitive touch screen is positive correlation to the response time of touch point and the electric charge amount that the touch point position corresponds, when the electric charge amount everywhere that coupling capacitance carried on the capacitive touch screen is equal, then capacitive touch screen is the same to the response time of different touch points, can promote user operation experience.
EXAMPLE III
For convenience of description, only the portions related to the present embodiment are shown in the capacitive diaphragm provided in the first embodiment of the present application.
In this embodiment, the capacitive diaphragm is configured as a dual-drive scheme, one end of each driving channel 10 is configured as a first driving end, the other end of each driving channel 10 is configured as a second driving end, the first direction is a direction from the first driving end to the second driving end, and the second direction may be a direction from the receiving end to a direction away from the receiving end.
In one embodiment, referring to fig. 4, the area of each driving electrode piece 1 is equal to the area of an adjacent receiving electrode piece 2, the areas of a plurality of driving electrode pieces 1 gradually increase along a first direction and then gradually decrease, and the areas of a plurality of receiving electrode pieces gradually increase along the first direction and then gradually decrease.
It will be appreciated that each drive electrode pad 1 has at least one corresponding receiver electrode pad 2, the drive electrode pad 1 being adjacent to the corresponding receiver electrode pad 2. For example, all the driving electrode pieces 1 are diamond-shaped, one driving electrode piece 1 has four adjacent receiving electrode pieces 2, and the area of the driving electrode piece 1 is at least equal to that of one receiving electrode piece 2.
Illustratively, the areas of the driving electrode pieces 1 in the same column are not equal, and the areas of the driving electrode pieces 1 and one adjacent receiving electrode piece 2 are equal; or the areas of the driving electrode pads 1 in the same row are equal, and the areas of the driving electrode pads 1 may be equal to the areas of the adjacent two receiving electrode pads 2 in the same row.
In one embodiment, referring to fig. 5, the areas of the receiving electrode pieces 2 gradually increase along the first direction and then gradually decrease, and the area of each driving electrode piece 1 is greater than or equal to the area of the largest receiving electrode piece 2.
In application, all the driving electrode sheets 1 may have the same area.
In application, the areas of the plurality of receiving electrode sheets may gradually increase along the second direction.
It can be understood that adjacent driving electrode pads 1 and receiving electrode pads 2 may form a coupling capacitor, the size of the coupling capacitor is positively correlated with the facing area of the adjacent driving electrode pads 1 and receiving electrode pads 2, and when the area of each driving electrode pad 1 is greater than or equal to the area of the largest receiving electrode pad 2, the size of the coupling capacitor is positively correlated with the area of the receiving electrode pad 2.
In one embodiment, referring to fig. 6, the areas of the plurality of driving electrode pieces 1 gradually increase along the first direction and then gradually decrease, and the area of each receiving electrode piece 2 is greater than or equal to the area of the largest driving electrode piece 1.
In an application, all the receiving electrode pads may be equal in area.
In application, the area of the plurality of driving electrode sheets 1 may gradually increase along the second direction.
It can be understood that the adjacent driving electrode pieces 1 and receiving electrode pieces 2 may form a coupling capacitor, the size of the coupling capacitor is positively correlated with the facing area of the adjacent driving electrode pieces 1 and receiving electrode pieces 2, and when the area of each receiving electrode piece is greater than or equal to the largest area of the driving electrode piece 1, the size of the coupling capacitor is positively correlated with the area of the driving electrode piece 1.
The embodiment of the application provides a capacitor diaphragm, wherein each driving electrode plate has the same area as an adjacent receiving electrode plate, the areas of a plurality of driving electrode plates are gradually increased along a first direction and then gradually reduced, and the areas of a plurality of receiving electrode plates are gradually increased along the first direction and then gradually reduced; or the areas of the plurality of receiving electrode slices are gradually increased and then gradually decreased along a first direction, and the area of each driving electrode slice is larger than or equal to the area of the largest receiving electrode slice; or the areas of the plurality of driving electrode slices are gradually increased and then gradually decreased along a first direction, the area of each receiving electrode slice is larger than or equal to the area of the largest driving electrode slice, if the first driving end and the second driving end are connected with a driving signal source, the receiving end is connected with a receiving signal source, adjacent driving electrode slices and receiving electrode slices can form coupling capacitors, the coupling capacitance values formed by the driving electrode slices and the adjacent receiving electrode slices can be gradually increased and then gradually decreased along the first direction, and the charge amount carried by the coupling capacitors on the capacitive touch screen can be equal everywhere, because the response time of the capacitive touch screen to the touch point is positively correlated with the charge amount corresponding to the position of the touch point, when the charge amount carried by the coupling capacitor on the capacitive touch screen is equal everywhere, the response time of the capacitive touch screen to different touch points is the same, and the operation experience of a user can be improved.
Example four
For convenience of description, only the portions related to the present embodiment are shown in the capacitive diaphragm provided in the first embodiment of the present application.
In one embodiment, the second direction may be a direction from the receiving end to away from the receiving end.
The driving channel 10 comprises a plurality of driving electrode plates 1 which are sequentially connected along a first direction; the receiving channel 20 includes a plurality of receiving electrode pads 2 connected in sequence along the second direction.
In one embodiment, each of the driving electrode pads 1 has an area equal to that of an adjacent receiving electrode pad 2, the area of the driving electrode pad 1 is equal to (target channel signal value/target signal value) × standard driving area, the target channel signal value is the largest signal value on the standard driving channel corresponding to the driving electrode pad 1, and the target signal value is the signal value of the standard driving electrode pad corresponding to the driving electrode pad 1.
It will be appreciated that each driving electrode pad 1 has at least one adjacent receiving electrode pad 2, and the area of the driving electrode pad 1 is equal to that of at least one of the receiving electrode pads 2, for example, if the areas of the driving electrode pads in the same column are not equal, the areas of the driving electrode pads 1 and the adjacent receiving electrode pads 2 are equal; or the areas of the driving electrode pads in the same row are equal, the areas of the driving electrode pads 1 may be equal to the areas of the adjacent two receiving electrode pads 2 in the same row.
In application, the standard capacitor diaphragm comprises a plurality of standard driving channels extending along a first direction and a standard receiving channel extending along a second direction, the standard driving channels comprise a plurality of standard driving electrode plates connected in sequence along the first direction, and the standard receiving channels comprise a plurality of standard receiving electrode plates connected in sequence along the second direction; the areas of all the standard driving electrode plates are equal and are the standard driving areas, and the areas of all the standard receiving electrode plates are equal and are the standard receiving areas.
It is understood that the areas of several driving electrode slices 1 may be gradually increased in the second direction according to the fact that the areas of the driving electrode slices 1 are equal to (target channel signal value/target signal value).
In application, the capacitor diaphragm includes M driving channels 10, the driving channels 10 include N driving electrode sheets 1, and the driving electrode sheets 1 may be arranged in an N × M array on the capacitor diaphragm, where N and M may be any positive integer greater than 1. The capacitive diaphragm may include M receiving channels 20, the receiving channels 20 include N receiving electrode pads 2, and the receiving electrode pads 2 may be arranged in an N × M array on the capacitive diaphragm, where N and M may be any positive integer greater than 1.
In application, the standard capacitive diaphragm may include M standard driving channels, the standard driving channels include N standard driving electrode pads, and the standard driving electrode pads may be arranged in an N × M array on the capacitive diaphragm, where N and M may be any positive integer greater than 1. The standard capacitor diaphragm can comprise M standard driving channels, the standard driving channels comprise N standard driving electrode plates, the standard driving electrode plates can be arranged on the capacitor diaphragm in an N-M array, and both N and M can be any positive integer larger than 1.
It can be understood that the area of the driving electrode plate and the area of the receiving electrode plate of the capacitor diaphragm in the embodiment are different from those of the standard capacitor diaphragm, and the driving electrode plate and the receiving electrode plate are identical in structure, number and material.
In an application, the target channel signal value and the target signal value can be obtained by measuring the signal value of a standard capacitive diaphragm. The area of the standard driving area in the standard capacitive diaphragm is the same as the area of the first row and first column driving electrode pad 1 in the embodiment, and the area of the standard receiving area in the standard capacitive diaphragm is the same as the area of the 1 st row and 1 st column receiving electrode pad 2 in the embodiment.
In an embodiment, the target channel signal value corresponding to the a-th row and B-th column driving electrode plate 1 on the capacitive diaphragm in this embodiment may be the a-th row and 1-th column mark on the standard capacitive diaphragmTarget signal value A measured by quasi-driving electrode plate0In application, in this embodiment, the target signal value corresponding to the a-th row and B-th column driving electrode pad 1 on the capacitive diaphragm may be a target signal value a measured by the a-th row and B-th column standard driving electrode pad on the standard capacitive diaphragmx。
Illustratively, the area of the driving electrode plate 1 on the capacitive diaphragm of the embodiment, which is in row a and column B, is SxAnd corresponding target signal value is AxThe area of the standard drive area diaphragm is S0The target signal value of the driving electrode slice 1 of the A-th row and the 1-th column is A0That is, the signal value of the target channel corresponding to the driving electrode plate 1 of the upper A-th row and the B-th column is A0，Sx＝(A0/Ax)*S0. It is understood that, on the membrane of the present embodiment, the ratio between the target channel signal value corresponding to the driving electrode pad 1 on any one column and the corresponding target signal value increases along the first direction.
In an embodiment, if a difference value between a target channel signal value corresponding to the driving electrode slice 1 and a corresponding target signal value is smaller than a preset difference value, the ratio between the target channel signal value corresponding to the driving electrode slice 1 and the corresponding target signal value may be rounded to 1, that is, the area of the driving electrode slice 1 gradually increases along the first direction and then gradually decreases, and the areas of the driving electrode slices 1 arranged along the same row and along the first direction may also be unchanged. The preset difference value can be adjusted according to the size of the driving signal output by the actual driving chip.
It will be appreciated that the areas of several receiving electrode pads 2 may be progressively increased in the second direction, as may be calculated when the areas of the receiving electrode pads 2 are equal to (target channel signal value/target signal value).
It will be appreciated that in this embodiment the area of the drive electrode pad 1 in row a and column B in the array of drive electrode pads 1 is equal to the area of the receiver electrode pad 2 in row a and column B in the array of receiver electrode pads 2.
In one embodiment, the area of each of the driving electrode pads 1 is greater than or equal to the area of the largest receiving electrode pad 2, the area of the receiving electrode pad 2 is equal to (target channel signal value/target signal value) × standard receiving area, the areas of all the driving electrode pads 1 are equal, the target channel signal value is the largest signal value on the standard driving channel corresponding to the receiving electrode pad 2, and the target signal value is the signal value of the standard driving electrode pad corresponding to the driving electrode pad 1.
For example, the target channel signal value corresponding to the receiving electrode pad 2 in row a and column B on the capacitive diaphragm may be the target signal value a measured by the driving electrode pad 1 in row a and column 1 on the standard capacitive diaphragm0In application, in this embodiment, the target signal value corresponding to the a-th row and B-th column driving electrode pad 1 on the capacitive diaphragm may be a target signal value a measured by the a-th row and B-th column driving electrode pad 1 on the standard capacitive diaphragmx。
It will be appreciated that the area of each drive electrode pad 1 is greater than the area of all the receiving electrode pads 2.
In application, the area of each drive electrode sheet 1 may be the same.
In one embodiment, the area of each receiving electrode pad 2 is greater than or equal to the area of the largest driving electrode pad 1, the area of the driving electrode pad 1 is equal to (target channel signal value/target signal value) × standard driving area, the areas of all receiving electrode pads 2 are equal, the target channel signal value is the largest signal value on the standard driving channel corresponding to the driving electrode pad 1, and the target signal value is the signal value of the standard driving electrode pad corresponding to the driving electrode pad 1.
It is understood that the areas of several driving electrode slices 1 may be gradually increased in the second direction according to the fact that the areas of the driving electrode slices 1 are equal to (target channel signal value/target signal value).
It will be appreciated that the area of each receiving electrode sheet 2 is greater than or equal to the area of all the driving electrode sheets 1.
In application, the area of each receiver electrode pad 2 may be the same.
In this embodiment, the areas of the driving electrode pads and/or the receiving electrode pads may be calculated according to the maximum signal value on the corresponding standard driving channel, the signal value of the corresponding standard driving electrode pads, and the standard driving area or the standard receiving area, the difference between the charge amounts carried by the coupling capacitors at different positions on the standard capacitive diaphragm may be accurately calculated, the area of the receiving electrode pad 2 and/or the area of the driving electrode pad may be accurately calculated according to the area of the receiving electrode pad being equal to (target channel signal value/target signal value) × the standard receiving area and/or the area of the driving electrode pad being equal to (target channel signal value/target signal value) × the standard driving area, so that the charge amounts carried by the coupling capacitors after the capacitive diaphragm is connected to the driving voltage source and the receiving voltage source may be equal everywhere, when the charge amounts carried by the coupling capacitors on the capacitive touch screen are equal everywhere, the response time of the capacitive touch screen to different touch points is the same, and the operation experience of a user can be improved.
EXAMPLE five
The present embodiment provides a capacitive touch screen, including the capacitive diaphragm in any one of the above embodiments. Referring to fig. 7, the capacitive touch screen includes a capacitive diaphragm and a control chip 3 in the second embodiment, a driving end of each driving channel 10 is electrically connected to the control chip 3, and a receiving end of each receiving channel 20 is electrically connected to the control chip 3.
It is understood that the number and the type of the control chips 3 are not limited in the present embodiment. Meanwhile, the connection mode of the capacitance diaphragm and the control chip 3 is not limited.
In another embodiment, referring to fig. 8, the capacitive touch screen may include the capacitive diaphragm and the control chip 3 in the third embodiment, the first driving end and the second driving end of each driving channel 10 are electrically connected to the control chip 3, and the receiving end of each receiving channel 20 is electrically connected to the control chip 3.
It is understood that the number and the type of the control chips 3 are not limited in the present embodiment. Meanwhile, the connection mode of the capacitance diaphragm and the control chip 3 is not limited.
The embodiment provides an electronic device, such as a tablet computer and a teaching large screen, which may include the capacitive touch screen.
The capacitive touch screen has the same response time to different touch points, and the operation experience of a user using the electronic equipment can be improved.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A capacitance diaphragm is characterized by comprising a plurality of mutually parallel driving channels and a plurality of mutually parallel receiving channels, wherein each driving channel is provided with at least one driving end;
the driving channel comprises a plurality of driving electrode plates which are sequentially connected along a first direction, and the receiving channel comprises a plurality of receiving electrode plates which are sequentially connected along a second direction;
the area of a driving electrode plate on the driving channel is increased along with the increase of the distance between the driving electrode plate and a target driving end, wherein the target driving end is the driving end, which is closest to the driving electrode plate, on the driving channel; and/or
The area of the receiving electrode pieces, which are positioned in the same row and arranged in the first direction, increases as the distance between the receiving electrode pieces and a target driving end increases, wherein the target driving end is the driving end closest to the driving electrode piece corresponding to the receiving electrode pieces, and the receiving electrode pieces are adjacent to the driving electrode pieces.
2. The capacitive diaphragm of claim 1 wherein one end of each said drive channel is configured as a first drive end and the other end of said drive channel is configured as a non-drive end, each said drive electrode pad having an area equal to an area of an adjacent said receiving electrode pad, a plurality of said drive electrode pads having areas that increase progressively in a first direction and a plurality of said receiving electrode pads having areas that increase progressively in the first direction, wherein the first direction is the direction from said first drive end to said non-drive end.
3. The capacitive diaphragm of claim 1 wherein one end of each said drive channel is configured as a first drive end and the other end of said drive channel is configured as a non-drive end, and wherein the area of a plurality of said receiving electrode pads increases gradually along a first direction, the area of each said drive electrode pad being greater than or equal to the area of the largest said receiving electrode pad, wherein the first direction is from said first drive end to said non-drive end.
4. The capacitive diaphragm of claim 1 wherein one end of each said drive channel is configured as a first drive end and the other end of said drive channel is configured as a non-drive end, and wherein the area of a plurality of said drive electrode pads increases gradually along a first direction, and the area of each said receiving electrode pad is greater than or equal to the area of the largest said drive electrode pad, wherein the first direction is from said first drive end to said non-drive end.
5. The capacitive diaphragm of claim 1 wherein one end of each of said drive channels is configured as a first drive end and the other end of said drive channel is configured as a second drive end, each of said drive electrode pads has an area equal to that of an adjacent one of said receiving electrode pads, and wherein the areas of a plurality of said drive electrode pads gradually increase and then gradually decrease along a first direction and the areas of a plurality of said receiving electrode pads gradually increase and then gradually decrease along the first direction, wherein the first direction is from said first drive end to said second drive end.
6. The capacitive diaphragm of claim 1 wherein one end of each of said drive channels is configured as a first drive end, the other end of said drive channel is configured as a second drive end, and the areas of said plurality of receiving electrode pads increase and decrease gradually along a first direction, each of said plurality of drive electrode pads having an area greater than or equal to the area of the largest receiving electrode pad, wherein the first direction is from said first drive end to said second drive end.
7. The capacitive diaphragm of claim 1 wherein one end of each of said drive channels is configured as a first drive end, the other end of said drive channel is configured as a second drive end, the area of said plurality of drive electrode pads increases gradually along a first direction and then decreases gradually, the area of each of said plurality of receiving electrode pads is greater than or equal to the area of the largest of said plurality of drive electrode pads, wherein the first direction is from said first drive end to said second drive end.
8. The capacitive diaphragm of claim 1 wherein each of said drive electrode pads is equal in area to an adjacent receiving electrode pad, said drive electrode pad has an area equal to (target channel signal value/target signal value) × standard drive area, the target channel signal value being the largest signal value on the standard drive channel to which said drive electrode pad corresponds, said target signal value being the signal value of the standard drive electrode pad to which said drive electrode pad corresponds; or
The area of each driving electrode slice is larger than or equal to the area of the largest receiving electrode slice, the area of the receiving electrode slice is equal to (target channel signal value/target signal value) × standard receiving area, the areas of all the driving electrode slices are equal, the target channel signal value is the largest signal value on the standard driving channel corresponding to the receiving electrode slice, and the target signal value is the signal value of the standard driving electrode slice corresponding to the driving electrode slice; or
The area of each receiving electrode slice is larger than or equal to the area of the largest driving electrode slice, the area of each driving electrode slice is equal to (target channel signal value/target signal value) × standard driving area, the areas of all receiving electrode slices are equal, the target channel signal value is the largest signal value on the standard driving channel corresponding to the driving electrode slice, and the target signal value is the signal value of the standard driving electrode slice corresponding to the driving electrode slice.
9. A capacitive touch screen comprising the capacitive diaphragm of any one of claims 1 to 8 and a control chip, wherein the driving end of each driving channel is electrically connected to the control chip, and the receiving end of each receiving channel is electrically connected to the control chip.
10. An electronic device comprising the capacitive touch screen of claim 9.
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| CN202020531655.2U CN211979642U (en) | 2020-04-10 | 2020-04-10 | Capacitive diaphragm, capacitive touch screen and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112493544A (en) * | 2020-11-24 | 2021-03-16 | 深圳麦克韦尔科技有限公司 | Battery pole and electron atomizing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112493544A (en) * | 2020-11-24 | 2021-03-16 | 深圳麦克韦尔科技有限公司 | Battery pole and electron atomizing device |
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