CN113031823A - Touch panel and display device - Google Patents
Touch panel and display device Download PDFInfo
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- CN113031823A CN113031823A CN202110343347.6A CN202110343347A CN113031823A CN 113031823 A CN113031823 A CN 113031823A CN 202110343347 A CN202110343347 A CN 202110343347A CN 113031823 A CN113031823 A CN 113031823A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
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- General Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Position Input By Displaying (AREA)
Abstract
The utility model provides a touch panel and display device, this touch panel includes N signal lines that arrange side by side, and every signal line includes parallelly connected first sub-signal line and second sub-signal line, and the position that first sub-signal line and second sub-signal line are connected is the tie point, and the tie point in at least one signal line is located the tie point in the 1 st signal line outside the straight line that the tie point of the tie point and the N signal line of the tie point limit, and N is not less than 3 positive integer. In the touch panel with the structure, the problem of optical bright blocks in the area where the connecting point is located is weakened or eliminated.
Description
Technical Field
The present disclosure relates to the field of touch control, and in particular, to a touch panel and a display device.
Background
The electronic product with the touch function is generally applied in a visual scene of a user, so that certain requirements on visual effects are met, however, due to the limitation of the design of the current electronic product with the touch function, a part of the structure of the current electronic product with the touch function generates interference light under the illumination condition, and the visual experience of the user is reduced.
Disclosure of Invention
In order to solve the technical problem, the present disclosure provides a touch panel and a display device, which can improve the visual experience of a user.
A first aspect of the present disclosure provides a touch panel. The touch panel comprises N signal lines which are arranged in parallel, each signal line comprises a first sub-signal line and a second sub-signal line which are connected in parallel, the positions where the first sub-signal line and the second sub-signal line are connected are connection points, the connection point in at least one signal line is positioned outside a straight line defined by the connection point in the 1 st signal line and the connection point of the Nth signal line, and N is a positive integer not less than 3.
In the above scheme, the connection points of the first sub-signal line and the second sub-signal line are not all located on the same straight line, that is, the connection points are arranged irregularly (non-straight line), and under the illumination condition, the problem of the optical bright block caused by the setting of the connection points is weakened (the influence of the optical bright block on the vision is weakened, for example, the visibility is reduced) or eliminated, so that the visual experience of the user is improved.
In one embodiment of the first aspect of the present disclosure, the touch panel includes a touch functional area and a frame area surrounding the touch functional area, the signal lines are located in the frame area, and the frame area includes at least one unit area along an extending direction of the signal lines, and each of the signal lines has a connection point in each of the unit areas. In each unit region, the connection point in at least one signal line is located outside a straight line defined by the connection point in the 1 st signal line and the connection point of the nth signal line.
In one specific embodiment of the first aspect of the present disclosure, in each unit area, a straight line defined by connection points in any two signal lines is located outside connection points in the other N-2 signal lines.
In the scheme, three or more than three connecting points are not arranged in each unit area and are positioned on the same straight line, so that the regular arrangement (non-straight line arrangement) of the connecting points is damaged to the maximum extent, and the problem of optical bright blocks caused by the arrangement of the connecting points is solved.
In one embodiment of the first aspect of the present disclosure, in each cell region, the connection point is located on at least one dummy line, and each dummy line of the at least one dummy line is a curved line. In a coordinate system established with the extending direction of the signal lines as the Y axis and the arrangement direction of the N signal lines as the X axis, the slope of any position of the dummy line is a positive value or the slope of any position of the dummy line is a negative value.
In the above scheme, a curve may be set first, and then the setting position of the connection point may be determined according to the intersection of the curve and each signal line, thereby simplifying the position planning of the connection point.
In one embodiment of the first aspect of the present disclosure, in each unit area, all the connection points are located on one dummy line, and the connection points of the 1 st to nth signal lines are sequentially spaced at different preset distances along one extending direction of the signal lines. For example, further, the preset distances are not less than 10 μm, and/or, in the same cell region, the sum of the preset distances is substantially equal to the size of the cell region along the extending direction of the signal line.
In the above-described aspect, the connection points increase in the arrangement range of the cell regions, or even are distributed over the entire length direction of the cell regions (the direction along which the signal lines extend), that is, the connection points are distributed from one end of the cell region to the other end along the length direction of the cell region. Thus, the distance between the respective connection points is increased, thereby further reducing optical phenomena (light blocks, etc.) caused by too close connection point distances (too large arrangement density in the direction parallel to the extending direction of the signal lines).
In one specific embodiment of the first aspect of the present disclosure, in each cell region, all the connection points are located on X dummy lines, and X is a positive integer not less than 2 and less than N. The connection point of the m + nX signal line is positioned on the m dummy line, m is an integer which is greater than 0 and not greater than X, N is a natural number, and nX is less than N.
In the above scheme, by setting a plurality of curves and then determining the setting positions of the connection points according to the intersections of the plurality of curves and the respective signal lines, in addition to simplifying the position planning of the connection points, regular arrangement of the connection points is further reduced, and the distance between adjacent connection points on one curve is increased, thereby further reducing optical phenomena (light blocks and the like) caused by too close distance between the connection points (too large arrangement density in the directions perpendicular and parallel to the extending direction of the signal lines).
In a specific implementation manner of the first aspect of the present disclosure, the touch panel further includes an insulating layer, the insulating layer is located between the first sub-signal line and the second sub-signal line, a first through hole is disposed in the insulating layer, and the first sub-signal line and the second sub-signal line are connected through the first through hole.
In one embodiment of the first aspect of the present disclosure, the touch panel further includes a touch electrode layer located in the touch functional region, the touch electrode layer includes a plurality of first electrodes arranged in parallel and a plurality of second electrodes arranged in parallel, and the first electrodes and the second electrodes cross each other to form a touch unit. Along the arrangement direction of the signal lines, the unit area corresponds to the touch unit, and along the extension direction of the signal lines, the size of the touch unit is equal to that of the unit area.
In one embodiment of the first aspect of the present disclosure, the first electrode and the second electrode are located on different layers, the insulating layer is located between the first electrode and the second electrode, the first sub-signal line and the first electrode are formed on the same layer and the same material, and the second sub-signal line and the second electrode are formed on the same layer and the same material.
In the above scheme, when the first electrode and the second electrode of the touch electrode layer are manufactured, the signal lines can be synchronously formed, so that the manufacturing process flow of the touch panel is simplified, and the cost is reduced.
In another specific implementation manner of the first aspect of the present disclosure, the first electrode and the second electrode are on the same layer, the first electrode is disconnected into a plurality of sub-electrodes in a region where the first electrode crosses the second electrode, the insulating layer covers the first electrode and the second electrode, the touch electrode layer further includes a conductive bridge located on a side of the insulating layer away from the first electrode and the second electrode, a second through hole is provided in the insulating layer, the conductive bridge is connected with the sub-electrodes through the second through hole, the first sub-signal line and the first electrode are on the same layer and formed of the same material, and the second sub-signal line and the conductive bridge are on the same layer and formed of the same material.
In the above scheme, when the first electrode, the second electrode and the conductive bridge of the touch electrode layer are manufactured, the signal lines can be synchronously formed, so that the manufacturing process flow of the touch panel is simplified, and the cost is reduced.
A display device in a second aspect of the present disclosure includes a display panel and the touch panel in the first aspect, where the touch panel is located on a light emitting side of the display panel.
Drawings
Fig. 1 is a schematic plan structure diagram of a touch panel according to an embodiment of the present disclosure;
FIG. 2 is an enlarged schematic view of a structure of an S region of the touch panel shown in FIG. 1;
FIG. 3 is a schematic diagram of a planar structure of the signal line of FIG. 2 in a cell region;
FIG. 4 is a cross-sectional view of a portion of the structure of the touch panel shown in FIG. 2, showing the structure of signal lines and a touch unit;
FIG. 5 is a schematic diagram of another planar structure of the signal line in a cell region shown in FIG. 2;
FIG. 6 is a schematic diagram of another planar structure of the signal line in a cell region shown in FIG. 2;
FIG. 7 is an enlarged schematic view of a structure of an S region of the touch panel shown in FIG. 1;
fig. 8 is a cross-sectional view of a portion of the structure of the touch panel shown in fig. 7, which shows the structure of a signal line and one touch unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the disclosure provides a touch panel and a display device, which destroy regular arrangement of connection points in signal lines of the touch panel by designing the arrangement of the connection points, thereby eliminating optical problems such as optical bright blocks caused by regular arrangement of the connection points.
At least one embodiment of the present disclosure provides a touch panel, which includes N signal lines arranged in parallel, where each signal line includes a first sub-signal line and a second sub-signal line connected in parallel, a connection point of the first sub-signal line and the second sub-signal line is a connection point, a connection point of at least one signal line is located outside a straight line defined by a connection point of a1 st signal line and a connection point of an nth signal line, and N is a positive integer not less than 3. In this way, at least part of the connection points of the N signal lines may not all be located on the same straight line, that is, the connection points are arranged irregularly (non-straight line), and under the illumination condition, the problem of the optical bright block caused by the arrangement of the connection points is weakened (the influence of the optical bright block on the vision is weakened, for example, the visibility is reduced) or eliminated.
Hereinafter, a touch panel and a display device according to at least one embodiment of the present disclosure will be described with reference to the drawings. In addition, as shown in the drawings, in at least one embodiment of the present disclosure, a spatial rectangular coordinate system is established with reference to a surface on which the touch panel is located, so as to define positions of the touch panel and thus each element in the electronic device. In the rectangular spatial coordinate system, the X axis and the Y axis are parallel to the surface of the touch panel, and the Z axis is perpendicular to the surface of the touch panel.
In at least one embodiment of the present disclosure, as shown in fig. 1 to 4, the touch panel includes a touch functional area 11 and a frame area 12 surrounding the touch functional area, and the signal line 100 is located in the frame area 12. The signal lines 100 include N (including 7 corresponding to the columns L1 to L7 in the figure) signal lines 100 arranged in parallel, and each signal line 100 includes a first sub-signal line 110 and a second sub-signal line 120. As shown in fig. 4, the first sub-signal line 110 and the second sub-signal line 120 are connected at a connection point 130, thereby achieving parallel connection. As shown in fig. 3, the connection points 130 on the signal lines 100 of the columns L2, L3, L5, and L6 are all located outside the straight line 101 defined by the connection points 130 of the signal lines 100 of the columns L1 and L7.
The first sub-signal line 110 and the second sub-signal line 120 are connected in parallel, so that the impedance of the signal line 100 can be reduced, thereby reducing the requirement on the driving voltage and reducing the power consumption of the touch panel.
In the touch panel provided in at least one embodiment of the present disclosure, the frame area includes at least one unit area along an extending direction of the signal lines, and each signal line has a connection point in each unit area of the at least one unit area. In each unit region, the connection point in at least one signal line is located outside a straight line defined by the connection point in the 1 st signal line and the connection point of the nth signal line. For example, as shown in fig. 2, the frame region is divided into a plurality of unit regions 111 along the extending direction (Y-axis direction) of the signal line 100, and the signal line 100 (including the connection point 130) in each unit region 111 may be arranged as shown in fig. 3.
It should be noted that the arrangement modes of the connection points in different unit areas may be the same or different, and may be designed according to actual needs, which is not limited herein. Under the condition that the arrangement modes of the connection points of the unit areas are the same, the design difficulty of the arrangement modes of the connection points in the frame area can be reduced, the workload is simplified, and the cost is reduced.
In the embodiment of the present disclosure, the division of the cell area is not limited, and may be determined according to an actual process.
For example, in some embodiments, the cell area may be divided according to the touch units of the touch function area. For example, the touch panel further includes a touch electrode layer located in the touch functional region, the touch electrode layer includes a plurality of parallel first electrodes and a plurality of parallel second electrodes, and the first electrodes and the second electrodes cross each other to form a touch unit. Along the arrangement direction of the signal lines, the unit area corresponds to the touch unit, and along the extension direction of the signal lines, the size of the touch unit is equal to that of the unit area. Illustratively, as shown in fig. 2, the first electrode 210 and the second electrode 220 of the touch electrode layer 200 cross each other, and a touch unit a is formed at the cross. The touch unit a and the cell area 111 correspond along the arrangement direction of the signal lines 100 (i.e., the direction perpendicular to the extending direction of the signal lines 100, the X-axis direction in fig. 2), and the touch unit a and the cell area 111 have the same size along the extending direction of the signal lines 100 (the Y-axis direction in fig. 2). For example, the orthographic projections of the touch unit a and the unit area 111 on a line (e.g., Y axis) parallel to the signal line 100 coincide. Thus, the positions of the cell regions 111 can be divided according to the touch unit a.
The boundary of the touch unit can be divided according to the sensing area of the touch capacitor. In an embodiment of the present disclosure, one of the first electrode and the second electrode may be a driving electrode, the other of the first electrode and the second electrode may be a sensing electrode, and a region where the driving electrode and the sensing electrode intersect may form a touch capacitance. The scanning signal is applied to the driving electrode, if the finger of the user is close to the intersection point, a parasitic capacitor can be formed between the driving electrode or the sensing electrode and the finger of the user, the voltage of the touch capacitor can be caused to float by the parasitic capacitor, namely, the capacitance value of the touch capacitor formed at the intersection point of the driving electrode and the sensing electrode can be changed, the position of the touch capacitor with the changed capacitance value can be determined by detecting the sensing electrode with the changed voltage, and the touch position can be located, so that touch is realized.
It should be noted that, when a touch unit is divided in a touch panel, the whole touch functional area is usually divided into touch units, and the area division of the touch unit is actually a definition of a sensing area, for example, which touch unit the area belongs to can be divided according to the touch sensitivity of the area. For example, in an area between the first touch capacitor and the second touch capacitor adjacent to each other, if a change rate of a capacitance value of the first touch capacitor is greater than a change rate of a capacitance value of the second touch capacitor when touched (e.g., a finger of a user approaches), the area may be divided into touch units corresponding to the first touch capacitor. Thus, the boundary of the touch unit may actually be larger than the area occupied by the touch capacitor, and it should be understood by those skilled in the art that the detection range of the capacitor is usually larger than the area occupied by the touch capacitor, so that even the area around the capacitor can be still calculated as the detection area of the touch capacitor, i.e. the capacitor and some areas around the capacitor can be defined as one touch unit.
In the touch panel provided by at least one embodiment of the present disclosure, in each unit area, a straight line defined by connection points of any two signal lines is located outside connection points of other N-2 signal lines. Therefore, three or more than three connecting points are not arranged in each unit area and are positioned on the same straight line, so that the regular arrangement (non-straight line arrangement) of the connecting points is damaged to the maximum extent, and the problem of optical bright blocks caused by the arrangement of the connecting points is solved. For the purpose of describing the technical solution of the present application, the distribution of the connection points defined in the embodiment is expressed as "completely randomly distributed".
In the embodiment of the present disclosure, the specific manner of designing the connection points in each unit region to satisfy the completely random distribution is not limited, and the connection points may be designed according to an actual process. In the following, in several embodiments, several ways are described in which the connection points in each cell region can be designed to satisfy a completely random distribution.
In some embodiments of the disclosure, in each cell region, the connection point is located on at least one dummy line, and each dummy line of the at least one dummy line is a curved line. In a coordinate system established with the extending direction of the signal lines as the Y axis and the arrangement direction of the N signal lines as the X axis, the slope of any position of the dummy line is a positive value or the slope of any position of the dummy line is a negative value. Therefore, the curve can be set firstly, and then the setting position of the connecting point is determined according to the intersection point of the curve and each signal line, so that the position planning of the connecting point is simplified. In addition, under the condition of coordinate system determination, the slopes of all the positions of the dummy lines are uniformly positive or uniformly negative, so that the technical problem that the positions of the connecting points of the signal lines are difficult to plan due to the fact that one signal line and the dummy lines intersect for multiple times can be avoided. For example, as shown in fig. 5, in designing the connection point 130, an area where the connection point 130 is located may be defined according to a position where the dummy line 102 having a curved shape crosses each signal line 100. As shown in fig. 5, the slope of any position of the dummy line 102 is positive, so that it is ensured that the straight line defined by any two connection points 130 does not pass through any other connection point.
In the embodiment of the present disclosure, the slope of the dummy line is determined in the positive direction of the Y axis and the X axis, and as shown in fig. 5, the connection points 130 in the signal lines 100 of the columns L1 to L7 are sequentially distributed along the positive direction of the Y axis (along the direction of the signal line 100 extending toward the first and second electrodes of the touch electrode layer), so that the slope of any position of the dummy line where the connection point 130 is located in the signal lines 100 of the columns L1 to L7 is a positive value; further, if the coordinate system shown in fig. 5 is modified such that the positive direction of the Y axis is modified to a negative direction (a direction along which the first and second electrodes of the signal line 100 that face away from the touch electrode layer extend), the slope at any position of the dummy line where the connection point 130 is located in the signal lines 100 of the columns L1 to L7 becomes a negative value; in addition, if the arrangement of the signal lines 100 of the columns L1 to L7 shown in fig. 5 is changed to the opposite direction, that is, if the signal lines 100 of the columns L1 to L7 shown in fig. 5, which are arranged in sequence along the positive direction of the X axis, are changed to be arranged in sequence along the negative direction of the X axis, the slope of the dummy line where the connection point in the adjusted signal line is located also becomes a negative value.
In some embodiments of the present disclosure, in each unit region, all the connection points are located on one dummy line, and along one extending direction of the signal lines, the connection points of the 1 st to nth signal lines are sequentially arranged at intervals of different preset distances. For example, in some embodiments of the present disclosure, none of the predetermined distances is less than 10 microns. For example, in some embodiments of the present disclosure, in the same cell region, the sum of the preset distances is substantially equal to the size of the cell region along the extending direction of the signal line. In this way, the arrangement range of the connection points in the cell region is increased, or even distributed over the entire length direction of the cell region (the direction along which the signal lines extend), that is, the distribution range of the connection points is from one end of the cell region to the other end along the length direction of the cell region. Thus, the distance between the respective connection points is increased, thereby further reducing optical phenomena (light blocks, etc.) caused by too close connection point distances (too large arrangement density in the direction parallel to the extending direction of the signal lines). Illustratively, as shown in fig. 5, all the connection points 101 are located on a dummy line 102, which ensures that a straight line defined by any two connection points 130 does not pass through any other connection point. One end of the signal line 100 of the column L1, which is oriented in the negative direction of the Y axis, is provided with the connection point 130, and one end of the signal line 100 of the column L7, which is oriented in the positive direction of the Y axis, is provided with the connection point 130, i.e., the length of the range covered by the orthographic projections of the connection points 130 on the Y axis after being connected with each other is substantially equal to the length of the orthographic projection of the cell areas on the Y axis, so that the connection points 130 are maximally dispersed in the Y axis direction in each cell area, and the arrangement density of the connection points 130 is reduced.
For example, in some embodiments of the present disclosure, a dimension of each cell region along an extending direction of the signal lines is about 4000 micrometers, and a pitch between connection points of adjacent signal lines may be not less than 10 micrometers, 15 micrometers, 20 micrometers, 35 micrometers, or the like. For example, a first area dedicated to the arrangement of the connection points may be provided in the cell area, and the length of the first area is smaller than that of the cell area, so that the connection points may be arranged to be distributed over the first area as much as possible, and the length of the first area may be increased by designing the above-mentioned spacing, so as to reduce the arrangement density of the connection points. For example, the first region has an initial design length of 200 to 500 micrometers, and in the case that the distance between the connection points satisfies the above condition, the length of the first region may be increased to 1000 micrometers, and in the Y-axis direction, the length of a range covered by orthographic projections of the connection points on the Y-axis after the orthographic projections of the connection points on the Y-axis are connected to each other is substantially equal to the length of the orthographic projection of the first region on the Y-axis.
For example, the size (length) of each connection point in the direction along which the signal line extends can also be reduced. For example, the length of the connection point may be 30 to 50 micrometers, for example, 35 micrometers, 40 micrometers, 45 micrometers, or the like.
In other embodiments of the present disclosure, the connection points may be respectively located on a plurality of dummy lines having curved shapes in each of the cell areas. In at least one embodiment of the present disclosure, in each cell region, all the connection points are located on X dummy lines, and X is a positive integer not less than 2 and less than N. The connection point of the m + nX signal line is positioned on the m dummy line, m is an integer which is greater than 0 and not greater than X, N is a natural number, and nX is less than N. Thus, by setting a plurality of curves and then determining the arrangement positions of the connection points according to the intersections of the plurality of curves and the respective signal lines, in addition to simplifying the position planning of the connection points, regular arrangement of the connection points is further reduced, and the distance between adjacent connection points on one curve is increased, thereby further reducing optical phenomena (light blocks and the like) caused by too close distance between the connection points (too large arrangement density in the directions perpendicular and parallel to the extending direction of the signal lines). For example, as shown in fig. 6, 9 signal lines 100, i.e., L1 to L9 columns are provided, where X is 3, m can only take integers of 1, 2, and 3, and n can only take natural numbers of 0, 1, and 2. When m is 1, the m + nX signal line is the signal line 100 corresponding to the columns L1, L4, and L7, and the connection point 130 of the signal lines 100 corresponding to the columns L1, L4, and L7 is located on the 1 st dummy line 103; when m is 2, the m + nX signal line is the signal line 100 corresponding to the columns L2, L5, and L8, and the connection point 130 of the signal lines 100 corresponding to the columns L2, L5, and L8 is located on the 2 nd dummy line 104; when m is 3, the m + nX signal line is the signal line 100 corresponding to the columns L3, L6, and L9, and the connection point 130 of the signal line 100 corresponding to the columns L3, L6, and L9 is located on the 3 rd dummy line 105. As such, there are two signal lines 100 between adjacent connection points 130 on each dummy line, thereby increasing the spacing between adjacent connection points 130 on the same dummy line.
It should be noted that, in the embodiment of the present disclosure, the shapes of the X dummy lines may be similar or dissimilar. For example, in the case where the shapes of X dummy lines are all similar, only one dummy line needs to be designed, and by moving the dummy line to a different position to form another dummy line, the design difficulty can be simplified, and the cost can be reduced. For example, in the case where the shapes of all the X dummy lines are not similar, the regular arrangement of the connection points can be further reduced.
In at least one embodiment of the present disclosure, the touch panel further includes an insulating layer, the insulating layer is located between the first sub-signal line and the second sub-signal line, a first through hole is disposed in the insulating layer, and the first sub-signal line and the second sub-signal line are connected through the first through hole. Illustratively, as shown in fig. 4, the first sub-signal line 110 and the second sub-signal line 120 are previously provided with an insulating layer 300. A via hole, which may include the first sub-signal line 110, may be formed in the insulating layer 300, and the second sub-signal line 120 is naturally connected to the first sub-signal line 110 through the via hole when the second sub-signal line 120 is formed.
In at least one embodiment of the present disclosure, the first sub-signal line and the second sub-signal line may be formed simultaneously with the touch electrode layer, that is, in a process of manufacturing the touch electrode layer, the first sub-signal line and the second sub-signal line are formed simultaneously, so that the arrangement of the first sub-signal line and the second sub-signal line does not increase a manufacturing process flow of the touch panel, which is beneficial to control cost.
In at least one embodiment of the present disclosure, the first electrode and the second electrode are on the same layer, the first electrode is disconnected into a plurality of sub-electrodes in a region intersecting with the second electrode, the insulating layer covers the first electrode and the second electrode, the touch electrode layer further includes a conductive bridge located on a side of the insulating layer away from the first electrode and the second electrode, a second through hole is disposed in the insulating layer, the conductive bridge is connected to the sub-electrodes through the second through hole, the first sub-signal line and the first electrode are on the same layer and formed of the same material, and the second sub-signal line and the conductive bridge are on the same layer and formed of the same material. Therefore, the signal lines can be synchronously formed while the first electrode, the second electrode and the conductive bridge of the touch electrode layer are manufactured, so that the manufacturing process flow of the touch panel is simplified, and the cost is reduced. For example, as shown in fig. 4, the first electrode 210 and the second electrode 220 of the touch electrode layer 200 are located on the same layer, the second electrode 220 is disconnected at a crossing region of the first electrode 210 to form a plurality of sub-electrodes, the insulating layer 300 covers the first electrode 210 and the second electrode 220, and the conductive bridge 230 is disposed on the insulating layer 300 (on a side away from the first electrode 210). A second via hole through which the conductive bridge 230 is connected to the sub-electrode of the second electrode 220 may be exposed is provided in the insulating layer 300. The first electrode 210, the second electrode 220, and the first sub-signal line 110 are formed in the same layer and material, and the second sub-signal line 120 and the conductive bridge 230 are formed in the same layer and material.
For example, the material of the insulating layer 300 may be silicon nitride, silicon oxide, silicon oxynitride, or the like.
In an embodiment of the present disclosure, the at least two objects are formed of the same layer and the same material, which means that the at least two objects are formed by the same film layer through the same patterning process.
For example, the patterning process may be photolithographic patterning. For example, for the case that the first electrode, the second electrode and the first sub-signal line are in the same layer and made of the same material, the conductive material film layer may be formed first; coating photoresist on the conductive material film layer, then exposing the photoresist by using a mask plate, and then developing to obtain a photoresist pattern; etching (wet etching or dry etching) the conductive material film layer by taking the photoresist pattern as a mask so as to form a first electrode and a second electrode on the part of the conductive material film positioned in the touch function area and form a first sub-signal line on the part of the conductive material film positioned in the frame area; and then selecting whether to remove the residual photoresist according to the requirement.
In other embodiments of the present disclosure, the first electrode and the second electrode are located on different layers, the insulating layer is located between the first electrode and the second electrode, the first sub-signal line and the first electrode are formed on the same layer and from the same material, and the second sub-signal line and the second electrode are formed on the same layer and from the same material. Therefore, the signal lines can be synchronously formed while the first electrode and the second electrode of the touch electrode layer are manufactured, so that the manufacturing process flow of the touch panel is simplified, and the cost is reduced. Illustratively, as shown in fig. 7 and 8, the first electrode 210a and the second electrode 220a of the touch electrode layer 200a are separated by an insulating layer 300 a. The first electrode 210a and the first sub-signal line 110a are formed in the same layer and the same material, and the second electrode 220a and the second sub-signal line 120a are formed in the same layer and the same material. As shown in fig. 7, the limitation of the range of the touch unit a1 in the area where the touch unit a1 is located in the embodiment is shown, and the related explanation on how to limit the touch unit a in the embodiment shown in fig. 2 may be used, which is not repeated herein.
In the embodiments of the present disclosure, the material of the signal line and the touch electrode layer is not limited, for example, the first sub-signal line, the second sub-signal line, the first electrode, the second electrode, the conductive bridge, and the like may be a single-layer structure, or may be a stacked-layer structure. For example, the laminate structure is a laminate of Ti-Al-Ti, Mo-Al-Mo, or ITO-Ag-ITO. Illustratively, the Ti-Al-Ti type laminated structure is a laminate formed by sequentially laminating three films, i.e., a Ti film, an Al film, and a Ti film.
At least one embodiment of the present disclosure provides a display device, which includes a display panel and the touch panel in any of the above embodiments, where the touch panel is located on a light emitting side of the display panel.
In an embodiment of the present disclosure, the display panel may be an organic light emitting diode display panel, a liquid crystal display panel, an electronic paper display panel, or the like.
For example, in a display device provided in at least one embodiment of the present disclosure, a light splitting element (e.g., a light splitting grating) may be further disposed on the display side of the display panel, so that the display panel may have a three-dimensional display function. For example, the light-splitting element may be disposed on a side of the touch panel facing away from the display panel.
For example, the display device in the embodiments of the present disclosure may be any product or component having a display function, such as a television, a digital camera, a mobile phone, a watch, a tablet computer, a notebook computer, and a navigator.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and the like that are within the spirit and principle of the present invention are included in the present invention.
Claims (10)
1. A touch panel comprises N signal lines arranged in parallel, wherein,
each signal line comprises a first sub-signal line and a second sub-signal line which are connected in parallel, the position where the first sub-signal line and the second sub-signal line are connected is a connection point,
the connection point of at least one signal line is positioned outside a straight line defined by the connection point of the No. 1 signal line and the connection point of the No. N signal line, and N is a positive integer not less than 3.
2. The touch panel of claim 1, wherein the touch panel comprises a touch function area and a frame area surrounding the touch function area, and the signal line is located in the frame area, wherein,
the frame region includes at least one unit region along an extending direction of the signal lines, each of the signal lines having the connection point at each of the at least one unit region, and
in each of the unit regions, a connection point in at least one of the signal lines is located outside a straight line defined by a connection point in a1 st one of the signal lines and a connection point of an nth one of the signal lines.
3. The touch panel of claim 2,
in each unit area, a straight line defined by connection points in any two of the signal lines is positioned outside connection points in the other N-2 signal lines.
4. The touch panel according to claim 2 or 3,
in each of the cell regions, the connection point is located on at least one dummy line, each of the at least one dummy line being a curved line, an
In a coordinate system established with the extending direction of the signal lines as the Y axis and the arrangement direction of the N signal lines as the X axis, the slope of any position of the dummy line is a positive value or the slope of any position of the dummy line is a negative value.
5. The touch panel of claim 4,
in each unit area, all the connection points are positioned on one dummy line, and along one extending direction of the signal lines, the connection points of the 1 st to Nth signal lines are sequentially arranged at intervals with different preset distances,
preferably, the preset distances are not less than 10 micrometers, and/or, in the same unit region, the sum of the preset distances is substantially equal to the size of the unit region along the extending direction of the signal line.
6. The touch panel of claim 4,
in each of the unit regions, all the connection points are located on X of the dummy lines, X is a positive integer not less than 2 and less than N, and
the connection point of the m + nX signal line is positioned on the m dummy line, m is an integer which is greater than 0 and not greater than X, N is a natural number, and nX is less than N.
7. The touch panel according to claim 2, further comprising:
and the insulating layer is positioned between the first sub-signal line and the second sub-signal line, a first through hole is formed in the insulating layer, and the first sub-signal line and the second sub-signal line are connected through the first through hole.
8. The touch panel according to claim 7, further comprising a touch electrode layer located in the touch functional region, the touch electrode layer comprising a plurality of first electrodes and a plurality of second electrodes, the first electrodes and the second electrodes intersecting each other to form a touch unit,
the unit area corresponds to the touch unit along the arrangement direction of the signal lines, and the size of the touch unit is equal to that of the unit area along the extension direction of the signal lines.
9. The touch panel of claim 8,
the first electrode and the second electrode are located on different layers, the insulating layer is located between the first electrode and the second electrode, the first sub-signal line and the first electrode are located on the same layer and are formed by the same material, and the second sub-signal line and the second electrode are located on the same layer and are formed by the same material; or
The touch control electrode layer further comprises a conductive bridge located on one side of the insulating layer, which is far away from the first electrode and the second electrode, a second through hole is formed in the insulating layer, the conductive bridge is connected with the sub-electrodes through the second through hole, the first sub-signal line and the first electrode are formed on the same layer and from the same material, and the second sub-signal line and the conductive bridge are formed on the same layer and from the same material.
10. A display device comprising a display panel and the touch panel according to any one of claims 1 to 9, wherein the touch panel is located on a light-emitting side of the display panel.
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| CN202110343347.6A CN113031823B (en) | 2021-03-30 | 2021-03-30 | Touch panel and display device |
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|---|---|---|---|---|
| US20170228052A1 (en) * | 2014-11-27 | 2017-08-10 | Fujifilm Corporation | Conductive film and touch panel sensor provided with same |
| CN109725770A (en) * | 2018-12-27 | 2019-05-07 | 上海中航光电子有限公司 | A kind of touch panel and touch control display apparatus |
| CN110442254A (en) * | 2019-02-26 | 2019-11-12 | 京东方科技集团股份有限公司 | Touch display substrate and touch control display apparatus |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170228052A1 (en) * | 2014-11-27 | 2017-08-10 | Fujifilm Corporation | Conductive film and touch panel sensor provided with same |
| CN109725770A (en) * | 2018-12-27 | 2019-05-07 | 上海中航光电子有限公司 | A kind of touch panel and touch control display apparatus |
| CN110442254A (en) * | 2019-02-26 | 2019-11-12 | 京东方科技集团股份有限公司 | Touch display substrate and touch control display apparatus |
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