The present application is a national phase entry under 35 U.S.C. § 371 of International Application No. PCT/CN2020/080985, filed on Mar. 24, 2020.
The present disclosure relates to the field of display technology, in particular to a touch panel and a touch display device.
Along with the development of intelligent technology, the display screens (touch screens) with a touch function have been more and more widely used. The existing mainstream touch screens are mainly divided into touch screens with an on cell solution and touch screens with an in cell solution. For example, as to the on cell solution, a touch layer is embedded between a color filter substrate and a polarizer; and as to the in cell solution, a touch layer is embedded into the pixel units, and a common electrode on the TFT array substrate is taken as a touch sensor. A touch screen includes multiple touch electrodes, and the touch electrodes are connected with a touch driver chip through touch leads.
Embodiments of the present disclosure provide a touch panel, including:
a plurality of touch units arranged in an array; wherein each of the touch units includes a first touch electrode and a second touch electrode; the first touch electrode and the second touch electrode each is extending along a first direction and are arranged along a second direction; the second touch electrode includes a number M of sub-second electrode blocks arranged in sequence along the first direction; and M≥2;
first leads electrically connected with first touch electrodes in the respective touch units in a one-to-one correspondence manner; and
second leads, wherein each of the second leads is electrically connected with nth sub-second electrode blocks in respective second touch electrodes in touch units arranged along the first direction, and 1≤n≤M.
In a possible embodiment, the first touch electrode is comb-shaped, and is provided with a first master which extends along the first direction, and a plurality of first branches which are connected with the first master and extend towards the second touch electrode along a direction vertical to the first direction.
Each of the number M of sub-second electrode block is comb-shaped, and is provided with a second master which extends along the first direction, and a plurality of second branches which are connected with the second master and extend towards the first touch electrode along the direction vertical to the first direction. The first branches and the second branches are distributed alternately.
In a possible embodiment, an extending length of the second master in the first direction is 1/M of an extending length of the first master in a same touch unit in the first direction.
In a possible embodiment, a width of the first master in the direction vertical to the first direction is larger than a width of each of the first branches in the first direction. A width of the second master in the direction vertical to the first direction is larger than a width of each of the second branches in the first direction.
In a possible embodiment, an extending length of each of the first branches is equal to an extending length of each of the second branches.
In a possible embodiment, each of the touch units is rectangular, the first touch electrode is block-shaped, each of the number M of sub-second electrode blocks is block-shaped, and a length of the each sub-second electrode block in the first direction is less than a length of the first touch electrode in the first direction.
In a possible embodiment, a width of the first touch electrode along a direction vertical to the first direction is equal to a width of the each sub-second electrode block along the direction vertical to the first direction.
In a possible embodiment, a shape of the each sub-second electrode block in a same touch unit is square.
In a possible embodiment, areas of the respective sub-second electrode blocks in the same touch unit are the same.
In a possible embodiment, a first lead connected with the first touch electrode is arranged on a side, far away from the second touch electrode, in a same touch unit.
In a possible embodiment, the second leads includes: a first type of touch leads each arranged on a side, far away from the first touch electrode, of the second touch electrode, and a second type of touch leads each of which is bended to form multiple segments for evading from the sub-second electrode block.
Each of the first type of touch leads is electrically connected with first sub-second electrode blocks in respective second touch electrodes in touch units arranged along the first direction, each segment in each of the second type of touch leads is electrically connected with nth sub-second electrode blocks in two adjacent second touch electrodes in touch units arranged along the first direction; and 1<n≤M.
In a possible embodiment, the second leads further includes: a third type of touch leads each arranged on a side, facing towards the first touch electrode, of the second touch electrode.
Each of the third type of touch leads is electrically connected with last sub-second electrode blocks in respective second touch electrodes in touch units arranged along the first direction.
In a possible embodiment, the first touch electrode and the second touch electrode are arranged in the same layer.
In a possible embodiment, the first leads and the second leads are arranged in the same layer as the first touch electrode.
Embodiments of the present disclosure further provide a touch display device, including the touch panel provided in embodiments of the present disclosure.
In a possible embodiment, the touch display device further includes a display panel, the display panel is provided with multiple pixel units, and each of the pixel units includes a light transmitting area.
The first touch electrode, and/or the sub-second electrode block, and/or the first lead, and/or the second lead have/has a hollow part, and an orthographic projection of the hollow part on the display panel is overlapped with the light transmitting area of the pixel unit.
The self capacitance touch pattern of the existing touch panel is as shown in
In summary, in the related art, mutual capacitance touch has such problems as unfavorable ghost point of multi-finger touch, requirement of multiple film layers, and complex manufacture procedures, and self capacitance touch has the problem that the lower frame size and touch chip size are influenced due to too many channels.
In order to make the objects, technical solutions, and advantages of the embodiments of the present disclosure more apparent, a clear and complete description of the technical solutions of the embodiments in the present disclosure will be given below in combination with the drawings of the embodiments of the present disclosure. Apparently the embodiments described below are only a part but not all of the embodiments of the present disclosure. Based upon the embodiments here of the present disclosure, all the other embodiments which can occur to those skilled in the art without any inventive effort shall fall into the protection scope of the present disclosure.
Unless otherwise defined, the technical or scientific terms used in the present disclosure shall have a general meaning understood by those skilled in the art to which the present disclosure belongs. The terms “first”, “second” and the like used in the present disclosure do not indicate any order, quantity, or importance, but are merely intended to distinguish different components. Words like “include” or “including” mean that the element or object preceding the word covers the element or object listed after the word and its equivalent, without excluding other elements or objects. Words like “connection” or “connected” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms like “upper”, “lower”, “left” and “right” are merely intended to represent the relative position relationship, and when the absolute position of the described object changes, the relative positional relationship may also change correspondingly.
In order to keep the following description of the embodiments of the present disclosure clear and concise, a detailed description of the known functions and known parts is omitted in the present disclosure.
Please refer to
Each touch unit 1 includes a first touch electrode 11 and a second touch electrode 12 extending along a first direction AB and arranged along a second direction CD. That is, the first touch electrode 11 and the second touch electrode 12 each is extending along the first direction AB, and the first touch electrode 11 and the second touch electrode 12 are arranged in sequence along the second direction CD. Each second touch electrode 12 includes a number M (for example 4 in
The touch panel further includes first leads 21 electrically connected with the first touch electrodes 11 in a one-to-one correspondence manner. That is, one first lead 21 is correspondingly connected with one first touch electrode 11.
The touch panel further includes second leads 22. Each of the second leads 22 is electrically connected with nth sub-second electrode blocks 120 in respective second touch electrodes 12 in touch units 1 arranged along the first direction AB, and 2≤n≤M. That is, for example, in all sub-second electrode blocks 120 along the same first direction AB, the first sub-second electrode block 120 (that is, the first sub-second electrode block 120 at the topmost of the touch unit 1) belonging to the first touch unit 1 (that is, the first touch unit 1 in the direction from top to bottom in
The touch panel provided in embodiments of the present disclosure includes: a plurality of touch units 1 arranged in an array. Each touch unit 1 includes a first touch electrode 11 and a second touch electrode 12 extending along a first direction AB and arranged along a second direction CD. Each second touch electrode 12 includes M sub-second electrode blocks 120 arranged in sequence along the first direction, and M≥2. The touch panel further includes first leads 21 electrically connected with the first touch electrodes 11 in a one-to-one correspondence manner, and second leads 22. Each of the second leads 22 is electrically connected with nth sub-second electrode blocks 120 in respective second touch electrodes 12 in touch units 1 arranged along the first direction AB, and 1≤n≤M. That is, during touch, area positioning can be performed on the touch position through the first touch electrodes 11, and channel positioning can be performed through the sub-second electrode blocks 120, Through the combination of the area positioning and channel positioning, the touch position can be positioned accurately, thereby avoiding the problem of multi-finger ghost point. Moreover, compared with the self capacitance touch in the prior art that each touch electrode block needs a touch channel, while in the embodiments of the present disclosure, for all the sub-second touch electrode blocks 120 in the same first direction AB, only M second leads are required, thereby reducing the number of touch channels, and further solving the problem of too many channels of the self capacitance touch which may influence the lower frame size and touch chip size.
During specific implementation, the touch panel in the embodiments of the present disclosure can be a touch panel integrated with the liquid crystal display panel, and can also be a touch panel integrated with the organic light-emitting display panel (including an AMOLED display panel).
During specific implementation, there are various patterns of the touch units, the first touch electrodes and the second touch electrodes, which will be described below through specific examples.
For example, referring to
When the first touch electrode 11 is strip-shaped and the sub-second electrode block 120 is block-shaped, specifically, referring to
When the first touch electrode 11 is strip-shaped, and the sub-second electrode block 120 is block-shaped, specifically, referring to
When the first touch electrode 11 is strip-shaped, and the sub-second electrode block 120 is block-shaped, specifically, referring to
For another example, referring to
When the first touch electrode 11 and the sub-second electrode block 120 are both comb-shaped, specifically, referring to
When the first touch electrode 11 and the sub-second electrode block 120 are both comb-shaped, specifically, referring to
When the first touch electrode 11 and the sub-second electrode block 120 are both comb-shaped, specifically, the extending length S7 of the first branch 111 is equal to the extending length S8 of the second branch 122. Specifically, S8 can be 4 mm. Specifically, the longer S7 and S8 are, the better. However, too long and thin wiring will increase load.
During specific implementation, as to the first leads 21 in some embodiments of the present disclosure, referring to
During specific implementation, as to the second leads 22 in some embodiments of the present disclosure, that is, referring to
Specifically, referring to
During specific implementation, the first touch electrodes 11 and the second touch electrodes 12 are arranged on the same layer. Specifically, the first leads 21, the second leads 22 are in the same layer as the first touch electrodes 11. In some embodiments of the present disclosure, when the first leads 21, the second leads 22, the first touch electrodes 11 and the second touch electrodes 12 are all in the same layer, the manufacture procedures are effectively reduced, and the yield is improved.
Some embodiments of the present disclosure further provide a touch display device, including the touch panel provided in the embodiments of the present disclosure.
In some possible embodiments, the touch display device further includes a display panel. The display panel includes multiple pixel units. Each pixel unit includes a light transmitting area. The first touch electrode(s), and/or the sub-second electrode block(s), and/or the first lead(s), and/or the second lead(s) are/is provided with a hollow part(s). An orthographic projection(s) of the hollow part(s) on the display panel is/are overlapped with the light transmitting area(s) of the pixel unit(s), as shown in
The embodiments of the present disclosure have the following beneficial effects: a touch panel provided in some embodiments of the present disclosure includes a plurality of touch units arranged in an array. Each touch unit includes a first touch electrode and a second touch electrode extending along a first direction and arranged along a second direction. Each second touch electrode includes M sub-second electrode blocks arranged in sequence along the first direction, and The touch panel further includes first leads electrically connected with the first touch electrodes in a one-to-one correspondence manner, and second leads. Each of the second leads is electrically connected with nth sub-second electrode blocks in respective second touch electrodes in touch units arranged along the first direction, and 1≤n≤M. That is, during touch, area positioning can be performed on the touch position through the first touch electrodes, and channel positioning can be performed through the sub-second electrode blocks, through the combination of the area positioning and channel positioning, the touch position can be positioned accurately, thereby avoiding the problem of multi-finger ghost point. Moreover, compared with the self capacitance touch in the prior art that each touch electrode block needs a touch channel, while in the embodiments of the present disclosure, for all the sub-second touch electrode blocks in the same first direction, only M second leads are required, thereby reducing the number of touch channels, and further solving the problem of too many channels of the self capacitance touch which may influence the lower frame size and touch chip size.
Although the preferred embodiments of the present disclosure have been described, however, those skilled in the art can make additional variations and modifications to these embodiments once they learn about the concept of basic creativity. Therefore, the appended claims are interpreted to encompass preferred embodiments and all the variations and modifications falling within the scope of the present disclosure.
Evidently those skilled in the art can make various modifications and variations to the embodiment of the present disclosure without departing from the spirit and scope of the embodiment of the present disclosure. Thus the present disclosure is also intended to encompass these modifications and variations thereto so long as the modifications and variations come into the scope of the claims appended to the present disclosure and their equivalents.
Filing Document | Filing Date | Country | Kind |
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PCT/CN2020/080985 | 3/24/2020 | WO | 00 |