Capacitive touch component, capacitive screen and touch device

Abstract

The application discloses a capacitive touch assembly, a capacitive screen and a touch device. The capacitive touch assembly comprises a carrier substrate, a plurality of first electrodes and a plurality of second electrodes arranged on the carrier substrate. The first electrode comprises a plurality of first electrode blocks connected in sequence. The second electrode comprises a plurality of second electrode blocks connected in sequence. The inside of the first electrode block is hollowed out to form a first hollowed-out area. A first extension electrode is arranged on the second electrode block coupled with the hollowed-out first electrode block. The first extension electrode is connected with the second electrode block. The vertical projection of the first extension electrode on the carrier substrate is located in the vertical projection range of the first hollowed-out area on the carrier substrate. A new electric field is formed between the first extension electrode and the hollowed-out electrode block. The overall electric field distribution is increased, the electric field distribution is more uniform, the touch sensitivity is improved, and the writing linearity is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of touch control, in particular to a capacitive touch assembly, a capacitive screen and a touch device. BACKGROUND

[0002] As a kind of human-computer interaction technology, especially mutual capacitance touch screen, it plays a very important role, is widely used in smart phone, tablet and smart watch market.

[0003] Mutual capacitance touch screen includes scanning electrode and receiving electrode, the place where two groups of electrodes intersect will form mutual capacitance. Mutual capacitance touch screen scans measures the mutual capacitance size between two electrodes intersecting vertically on the screen. When the finger or input device of a person is close to or contacts the surface of mutual capacitance touch screen, it is equivalent to parallel a new capacitor at the two ends of the capacitor formed by the original intersecting electrodes on the screen, which will cause the total mutual capacitance to be smaller. When detecting mutual capacitance, the horizontal electrode sends excitation signal in turn, and all vertical electrodes receive sensing signal at the same time, so that the capacitance value of all horizontal and receiving electrode intersection points can be obtained, that is, the capacitance size of the two-dimensional plane of the entire touch screen. The measurement circuit in touch chip measures the mutual capacitance and can sense the change amount of mutual capacitance, and the touch position of touch point is calculated according to the change.

[0004] With the increase of the size of touch device, we find that the touch sensitivity of touch device will be poor, and the writing linearity of input device will also be poor. SUMMARY

[0005] The embodiment of the present application provides a capacitive touch assembly, a capacitive screen and a touch device, which can improve touch sensitivity and improve writing linearity.

[0006] In a first aspect, the embodiment of the present application provides a capacitive touch assembly, comprising:

[0007] A carrier substrate;

[0008] A plurality of first electrodes and a plurality of second electrodes arranged on the carrier substrate, the first electrodes include a plurality of first electrode blocks arranged along a first direction and connected in sequence, and the second electrodes include a plurality of second electrode blocks arranged along a second direction and connected in sequence, wherein the first electrodes are sensing electrodes, and the second electrodes are driving electrodes, or the first electrodes are driving electrodes, and the second electrodes are sensing electrodes;

[0009] The first electrodes and the second electrodes are insulated and isolated, and the vertical projections of the first electrodes and the second electrodes on the carrier substrate are staggered with each other, and the vertical projections of each electrode block on the carrier substrate are not overlapped;

[0010] The inside of the first electrode block is hollowed out to form a first hollowed-out region, and the second electrode block has at least one first extension electrode, the first extension electrode is connected with the second electrode block, and the vertical projection of the first extension electrode on the carrier substrate is located within the vertical projection range of the first hollowed-out region of the first electrode block on the carrier substrate.

[0011] Optionally, the first extension electrodes of two adjacent and connected second electrode blocks are connected to form a connection bridge of the two adjacent and connected second electrode blocks.

[0012] Optionally, the second electrode block has four first extension electrodes, and the vertical projections of the four first extension electrodes on the carrier substrate are respectively located within the vertical projection ranges of the first hollowed-out regions of the four first electrode blocks adjacent to the second electrode block on the carrier substrate, and two adjacent and connected second electrode blocks have two connection bridges.

[0013] Optionally, the first extension electrode is connected with the second electrode block through a first connection part.

[0014] Optionally, the vertical projection area of the first extension electrode on the carrier substrate is greater than the vertical projection area of the first connection part on the carrier substrate.

[0015] Optionally, the inside of the second electrode block is hollowed out to form a second hollowed-out region, and the first electrode block has at least one second extension electrode, the second extension electrode is connected with the first electrode block, and the vertical projection of the second extension electrode on the carrier substrate is located within the vertical projection range of the second hollowed-out region on the carrier substrate.

[0016] Optionally, the capacitive touch component comprises a first conductive layer, a second conductive layer, and an insulating layer arranged between the first conductive layer and the second conductive layer.

[0017] The first electrode and the second extension electrode are arranged on the first conductive layer, and the second electrode and the first extension electrode are arranged on the second conductive layer.

[0018] Optionally, the capacitive touch component comprises a first conductive layer, a second conductive layer, and an insulating layer arranged between the first conductive layer and the second conductive layer.

[0019] The first electrode block, the second electrode block, the first extension electrode, and the second extension electrode are arranged on the first conductive layer.

[0020] Two adjacent first electrode blocks are connected through a second connection part arranged on the first conductive layer.

[0021] Two adjacent second electrode blocks are connected by a conductive bridge located in the second conductive layer, and the vertical projections of the conductive bridge and the second connection portion on the carrier substrate are intersected.

[0022] Optionally, the insulating layer has a plurality of first through holes penetrating the insulating layer, and a first connecting post is provided in the first through hole. Two adjacent and connected second electrode blocks are electrically connected to the conductive bridge through the first connecting post.

[0023] The insulating layer has a plurality of second through holes penetrating the insulating layer. A second connecting post is provided in the second through hole. The second electrode block and the first extension electrode are respectively connected to the first connecting part through a second connecting post, so that the second electrode block is connected to the first extension electrode.

[0024] Secondly, embodiments of the present invention provide a capacitive screen, including the capacitive touch component as provided in the first aspect of the present invention.

[0025] Thirdly, embodiments of the present invention provide a touch device, including a capacitive screen as provided in the second aspect of the present invention.

[0026] The capacitive touch component provided in this invention includes a carrier substrate and multiple first electrodes and multiple second electrodes disposed on the carrier substrate. Each first electrode includes multiple first electrode blocks connected in sequence, and each second electrode includes multiple second electrode blocks connected in sequence. The interior of each first electrode block is hollowed out to form a first hollowed-out region. Each second electrode block has at least one first extended electrode connected to the second electrode block. The vertical projection of the first extended electrode on the carrier substrate is within the vertical projection range of the first hollowed-out region on the carrier substrate. By hollowing out the first electrode blocks to form the first hollowed-out region, and then disposing a first extended electrode on a second electrode block coupled to the hollowed-out first electrode block, the first extended electrode is connected to the second electrode block, and its vertical projection on the carrier substrate is within the vertical projection range of the first hollowed-out region on the carrier substrate. This creates a new electric field between the first extended electrode and the hollowed-out electrode block, increasing the overall electric field distribution and making it more uniform, thereby improving touch sensitivity and writing linearity. Attached Figure Description

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0028] Figure 1 This is a schematic diagram of the structure of an existing capacitive touch component;

[0029] Figure 2 for Figure 1 A schematic diagram of a local structure in the image;

[0030] Figure 3 This is a schematic diagram of the electric field coupling between the second electrode block and the first electrode block;

[0031] Figure 4 This is a partial top view of a capacitive touch component provided in an embodiment of the present invention;

[0032] Figure 5 for Figure 4 A partial structural diagram of the second electrode;

[0033] Figure 6 for Figure 4 A partial structural diagram of the first electrode;

[0034] Figure 7 for Figure 4 A schematic diagram of the electric field coupling between the second electrode block and the first electrode block;

[0035] Figure 8 A partial top view of another capacitive touch component provided in an embodiment of the present invention;

[0036] Figure 9 for Figure 8 A schematic diagram of the electric field coupling between the electrode block in the second electrode and the electrode block in the first electrode;

[0037] Figure 10 A partial top view of another capacitive touch component provided in an embodiment of the present invention;

[0038] Figure 11 for Figure 10 A partial structural diagram of the second electrode;

[0039] Figure 12 for Figure 10 A partial structural diagram of the first electrode;

[0040] Figure 13 A partial top view of another capacitive touch component provided in an embodiment of the present invention;

[0041] Figure 14 A partial top view of another capacitive touch component provided in an embodiment of the present invention;

[0042] Figure 15 A partial top view of another capacitive touch component provided in an embodiment of the present invention;

[0043] Figure 16 A partial top view of another capacitive touch component provided in an embodiment of the present invention;

[0044] Figure 17 for Figure 16 A partial structural diagram of the second electrode;

[0045] Figure 18 for Figure 16 A partial structural diagram of the first electrode;

[0046] Figure 19 A partial top view of another capacitive touch component provided in an embodiment of the present invention;

[0047] Figure 20 A partial top view of another capacitive touch component provided in an embodiment of the present invention;

[0048] Figure 21 Figure 4 A partial cross-sectional view of the capacitive touch component in the image;

[0049] Figure 22 Figure 4 A partial cross-sectional view of the capacitive touch component in the image;

[0050] Figure 23 for Figure 4 A partial cross-sectional view of the capacitive touch component in the image. Detailed Implementation

[0051] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0053] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. Moreover, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.

[0054] Figure 1 This is a schematic diagram of the structure of an existing capacitive touch component. Figure 2 for Figure 1 A partial structural diagram, such as Figure 1 As shown, the capacitive touch component includes multiple first electrodes extending longitudinally and multiple second electrodes extending laterally. The first electrodes include multiple first electrode blocks 12 connected in sequence, and the second electrodes include multiple second electrode blocks 11 connected in sequence. By scanning with an excitation signal, the coupling capacitance Cm between adjacent second electrode blocks 11 and first electrode blocks 12 is detected, and the position of the touch point is determined based on the change in coupling capacitance Cm before and after the touch.

[0055] Currently, most of the electrode blocks in touch devices have a rhomboid pattern. This structure has become mainstream mainly because it allows for a more uniform electric field distribution between the second electrode block 11 and the first electrode block 12. Furthermore, the static capacitance of the second electrode block 11 and the first electrode block 12 is relatively small, allowing for rapid charging and discharging during scanning.

[0056] Figure 3 This is a schematic diagram of the electric field coupling between the second electrode block and the first electrode block, as shown below. Figure 3 As shown, when the second electrode block 11 is coupled to the first electrode block 12, the electric field is stronger closer to the edge of the electrode block and weaker closer to the center of the electrode block. Therefore, as the size of the touch device increases, the size of the electrode block also increases, which will result in a very weak electric field in the center of the electrode block, leading to a decrease in touch sensitivity at that location and thus a deterioration in writing linearity.

[0057] To address the aforementioned problems, this invention provides a capacitive touch component that can be used in touch devices to achieve touch operations, improving the touch sensitivity and writing linearity of the touch device. The capacitive touch component includes a carrier substrate, multiple first electrodes, and multiple second electrodes. The first and second electrodes are disposed on the carrier substrate. The carrier substrate can be an insulating layer, such as glass, quartz, organic polymers, or other suitable materials; this invention does not limit the type of insulating layer. The first and second electrodes can be made of transparent conductive materials, including but not limited to ITO, nano-silver, and metal mesh; this invention does not limit the type of conductive material.

[0058] The first electrode includes a plurality of first electrode blocks arranged and connected sequentially along a first direction, and the second electrode includes a plurality of second electrode blocks arranged and connected sequentially along a second direction. The vertical projections of each electrode block on the carrier substrate do not overlap. The first direction intersects the second direction, such that the vertical projections of the first electrode and the second electrode on the carrier substrate are staggered. For example, the first direction is perpendicular to the second direction. The first electrode and the second electrode are insulated from each other. Specifically, at the intersection of the first electrode and the second electrode, the first electrode and the second electrode are located in different layers in the thickness direction, so that the first electrode and the second electrode do not contact each other. The first electrode is a sensing electrode, and the second electrode is a driving electrode; alternatively, the first electrode is a driving electrode, and the second electrode is a sensing electrode. This embodiment of the invention is not limited to this specific embodiment.

[0059] The interior of the first electrode block is hollowed out to form a first hollowed-out area. The second electrode block has at least one first extended electrode, which is connected to the second electrode block. The vertical projection of the first extended electrode on the carrier substrate is located within the vertical projection range of the first hollowed-out area on the carrier substrate.

[0060] The capacitive touch component provided in this invention includes a carrier substrate and multiple first electrodes and multiple second electrodes disposed on the carrier substrate. Each first electrode includes multiple first electrode blocks connected in sequence, and each second electrode includes multiple second electrode blocks connected in sequence. The interior of each first electrode block is hollowed out to form a first hollowed-out region. Each second electrode block has at least one first extended electrode connected to the second electrode block. The vertical projection of the first extended electrode on the carrier substrate is within the vertical projection range of the first hollowed-out region on the carrier substrate. By hollowing out the first electrode blocks to form the first hollowed-out region, and then disposing a first extended electrode on a second electrode block coupled to the hollowed-out first electrode block, the first extended electrode is connected to the second electrode block, and its vertical projection on the carrier substrate is within the vertical projection range of the first hollowed-out region on the carrier substrate. This creates a new electric field between the first extended electrode and the hollowed-out electrode block, increasing the overall electric field distribution and making it more uniform, thereby improving touch sensitivity and writing linearity.

[0061] To enable those skilled in the art to better understand the embodiments of the present invention, the capacitive touch component provided by the present invention will be specifically described below with reference to specific embodiments:

[0062] Figure 4 This is a partial top view of a capacitive touch component provided in an embodiment of the present invention. Figure 5 for Figure 4 A partial structural diagram of the second electrode. Figure 6 for Figure 4 A schematic diagram of a partial structure of the first electrode. (See attached diagram.) Figures 4-6 As shown, the capacitive touch component includes a carrier substrate (not shown), multiple first electrodes 130, and multiple second electrodes 120. The first electrodes 130 and second electrodes 120 are disposed on the carrier substrate. In this embodiment of the invention, the capacitive touch component is used in a display device. The carrier substrate is a transparent insulating plate, and the first electrodes 130 and second electrodes 120 are made of transparent conductive materials, including but not limited to ITO, nano-silver, and metal mesh.

[0063] The first electrode 130 includes a plurality of first electrode blocks 131 arranged and connected sequentially along a first direction Y, and the second electrode 120 includes a plurality of second electrode blocks 121 arranged and connected sequentially along a second direction X. Each electrode block is prismatic, and their vertical projections on the carrier substrate do not overlap. The first direction Y is perpendicular to the second direction X, such that the vertical projections of the first electrode 130 and the second electrode 120 on the carrier substrate intersect each other. The first electrode 130 and the second electrode 120 are insulated from each other. Specifically, at the intersection of the first electrode 130 and the second electrode 120, that is, at the connection between two adjacent and connected first electrode blocks 131 and the connection between two adjacent and connected second electrode blocks 121, the first electrode 130 and the second electrode 120 are in different layers in the thickness direction, so that the first electrode 130 and the second electrode 120 do not contact each other. For example, in the embodiments of the present invention, the first electrode 130 and the second electrode 120 are located in different layers and are isolated by an insulating layer, or the first electrode 130 and the second electrode 120 are located in the same layer and are isolated by a bridge at the intersection of their vertical projections on the carrier substrate. The embodiments of the present invention are not limited here.

[0064] In this embodiment, the first electrode block 131 of the first electrode 130 is hollowed out to form a hollowed-out region 132. The second electrode block 121 of the second electrode 120 has an extension electrode 122, which is connected to the second electrode block 121. The vertical projection of the extension electrode 122 on the carrier substrate is located within the vertical projection range of the hollowed-out region 132 on the carrier substrate.

[0065] Figure 7 for Figure 4 A schematic diagram of the electric field coupling between the second electrode block and the first electrode block is shown below. Figure 7 As shown, by hollowing out the interior of the first electrode block 131 to form a hollowed-out region 132, an extension electrode 122 is disposed on the second electrode block 121 coupled to the first electrode block 131. The extension electrode 122 is connected to the second electrode block 121, and the vertical projection of the extension electrode 122 on the carrier substrate is located within the vertical projection range of the hollowed-out region 132 on the carrier substrate. This creates a new electric field between the extension electrode 122 and the first electrode block 131, increasing the overall electric field distribution and making it more uniform, thereby improving touch sensitivity and writing linearity.

[0066] For example, in embodiments of the present invention, such as Figure 4 and Figure 5As shown, the extended electrode 122 is connected to the second electrode block 121 via the connecting portion 123. Exemplarily, in this embodiment of the invention, the extended electrode 122 can be appropriately expanded in area to adapt to the hollowed-out region 132. Specifically, the vertical projection area of ​​the extended electrode 122 on the carrier substrate is larger than the vertical projection area of ​​the connecting portion 123 on the carrier substrate. This results in a more uniform electric field distribution between the extended electrode 122 and the first electrode block 131. Exemplarily, the extended electrode 122 is adapted to the shape of the hollowed-out region 132 and does not contact the first electrode block 131.

[0067] In the above embodiments, the first electrode is a sensing electrode and the second electrode is a driving electrode, or the first electrode is a driving electrode and the second electrode is a sensing electrode. This embodiment of the present invention does not limit the specific electrode.

[0068] Figure 8 A partial top view of another capacitive touch component provided in an embodiment of the present invention, as shown below. Figure 8 As shown, the difference between this embodiment and the previous embodiment is that both the second electrode block 221 and the first electrode block 231 are hollowed out. The second electrode block 221 of the second electrode has an extension electrode 222 connected to the second electrode block 221, and the vertical projection of the extension electrode 222 on the carrier substrate is within the vertical projection range of the hollowed-out area 232 of the first electrode block 231 on the carrier substrate. The first electrode block 231 of the first electrode also has an extension electrode 233 connected to the first electrode block 231, and the vertical projection of the extension electrode 233 on the carrier substrate is within the vertical projection range of the hollowed-out area 223 of the second electrode block 221 on the carrier substrate. The parts that are the same as in the previous embodiments will not be repeated here.

[0069] Figure 9 for Figure 8 A schematic diagram of the electric field coupling between the second electrode block and the first electrode block is shown below. Figure 9As shown, by hollowing out the interior of the first electrode block 231 of the first electrode to form a hollowed-out region 232, an extension electrode 222 is provided on the second electrode block 221 coupled to the first electrode block 231. The extension electrode 222 is connected to the second electrode block 221, and the vertical projection of the extension electrode 222 on the carrier substrate is located within the vertical projection range of the hollowed-out region 232 of the first electrode block 231 on the carrier substrate, thereby forming a new electric field between the extension electrode 222 and the first electrode block 231; by hollowing out the interior of the second electrode block 221 of the second electrode... A hollowed-out area 223 is formed, and an extension electrode 233 is provided on the first electrode block 231 coupled to the second electrode block 221. The extension electrode 233 is connected to the first electrode block 231, and the vertical projection of the extension electrode 233 on the carrier substrate is located within the vertical projection range of the hollowed-out area 223 of the second electrode block 221 on the carrier substrate. This creates a new electric field between the extension electrode 233 and the second electrode block 221, further increasing the overall electric field distribution and making the electric field distribution more uniform, thereby improving touch sensitivity and writing linearity.

[0070] like Figure 2 As shown, the connecting lines between two adjacent second electrode blocks 11 and two adjacent first electrode blocks 12 are typically quite thin. This leads to an increase in the impedance of the second and first electrodes. Higher impedance results in faster signal attenuation, causing the signal to weaken closer to the electrode tip and thus reducing touch sensitivity. As touch devices become larger and the electrodes become longer, this problem becomes more pronounced.

[0071] To address the aforementioned problems, this invention provides another capacitive touch component, which... Figure 4 Based on the embodiment shown, a connecting bridge is added between two adjacent second electrode blocks in the second electrode. The connecting bridge forms a branch in parallel with the connecting line, which reduces the impedance of the second electrode, solves the problem of weak signal at the end of the second electrode, and improves touch sensitivity. Figure 10 This is a partial top view of another capacitive touch component provided in an embodiment of the present invention. Figure 11 for Figure 10 A partial structural diagram of the second electrode. Figure 12 for Figure 10 A partial structural diagram of the first electrode. This embodiment is similar to... Figure 4 The identical parts of the embodiments shown will not be repeated here, and the differences are described as follows:

[0072] like Figures 10-12As shown, in this embodiment, two adjacent second electrode blocks 321 in the second electrode 320 are connected by a connecting line (or connecting portion), and two adjacent first electrode blocks 331 in the first electrode 330 are connected by a connecting line. The interior of the first electrode block 331 of the first electrode 330 is hollowed out to form a hollowed-out region 332. The second electrode block 321 of the second electrode 320 has two extended electrodes 322, both of which are located on the same side of the second electrode 320. The two extended electrodes 322 are respectively connected to the second electrode block 321 through a connecting portion 323, and the vertical projection of the extended electrodes 322 on the carrier substrate is located within the vertical projection range of the hollowed-out region 332 on the carrier substrate. The extended electrodes 322 of two adjacent and connected second electrode blocks 321 are connected to form a connecting bridge between the two adjacent and connected second electrode blocks 321.

[0073] In this embodiment of the invention, by connecting the extended electrodes 322 of two adjacent and connected second electrode blocks 321, a connecting bridge of the two adjacent and connected second electrode blocks 321 is formed, forming a branch in parallel with the connecting line, thereby reducing the impedance of the second electrode, solving the problem of weak signal at the end of the second electrode, and improving touch sensitivity.

[0074] In the above embodiments, the first electrode is a sensing electrode and the second electrode is a driving electrode, or the first electrode is a driving electrode and the second electrode is a sensing electrode. This embodiment of the present invention does not limit the specific electrode.

[0075] Figure 13 A partial top view of another capacitive touch component provided in an embodiment of the present invention, as shown below. Figure 13 As shown, this embodiment is similar to Figure 10 The identical parts of the illustrated embodiments will not be repeated here. The differences are as follows: the interiors of the second electrode block 421 of the second electrode and the first electrode block 431 of the first electrode are both hollowed out. The second electrode block 421 of the second electrode has two extended electrodes 422. The vertical projections of the two extended electrodes 422 on the carrier substrate are respectively located within the vertical projection range of the hollowed-out areas 432 of the two first electrode blocks 431 adjacent to and on the same side of the second electrode block 421 of the second electrode on the carrier substrate. The first electrode block 431 of the first electrode also has two extended electrodes 433. The vertical projections of the two extended electrodes 433 on the carrier substrate are respectively located within the vertical projection range of the hollowed-out areas 423 of the two second electrode blocks 421 adjacent to and on the same side of the first electrode block 431 of the first electrode on the carrier substrate.

[0076] In this embodiment of the invention, by connecting the extended electrodes 422 of two adjacent and connected second electrode blocks 421 to form a connecting bridge of two adjacent and connected second electrode blocks 421, and by connecting the extended electrodes 433 of two adjacent and connected first electrode blocks 431 to form a connecting bridge of two adjacent and connected first electrode blocks 431, a branch connected in parallel with the connecting line is formed, thereby reducing the impedance of the first electrode and the second electrode, solving the problem of weak signal at the ends of the first electrode and the second electrode, and improving touch sensitivity.

[0077] Figure 14 A partial top view of another capacitive touch component provided in an embodiment of the present invention, as shown below. Figure 14 As shown, this embodiment is similar to Figure 13 The same parts of the embodiments shown will not be repeated here. The difference is that the two extended electrodes 522 of the second electrode block 521 of the second electrode are located on both sides of the second electrode, and the two extended electrodes 533 of the first electrode block 531 of the first electrode are located on both sides of the first electrode.

[0078] Figure 15 This is a partial top view of another capacitive touch component provided in an embodiment of the present invention, which is similar to... Figure 10 The identical parts of the embodiments shown will not be repeated here, and the differences are described as follows:

[0079] like Figure 15 As shown, the electrode block 631 of the first electrode is hollowed out to form a hollowed-out area 632. The electrode block 621 of the second electrode has four extended electrodes 622. The vertical projections of the four extended electrodes 622 on the carrier substrate are respectively located within the vertical projection range of the hollowed-out areas 632 of the four adjacent first electrode blocks 631 on the carrier substrate. The extended electrodes 622 of two adjacent and connected second electrode blocks 621 are connected to form a connecting bridge between the two adjacent and connected second electrode blocks 621. That is, in this embodiment, the two connecting bridges formed by the two adjacent and connected second electrode blocks 621 form two branches in parallel with the connecting line, further reducing the impedance of the second electrode, solving the problem of weak signal at the end of the second electrode, and improving touch sensitivity.

[0080] The vertical projections of the extended electrodes 622 of two adjacent but unconnected second electrode blocks 621 onto the carrier substrate are located within the vertical projection range of the same cutout area 632 onto the carrier substrate, and the two extended electrodes 622 are insulated from each other. For example, in this embodiment, since the second electrode block 621 of the second electrode has four extended electrodes 622, and the vertical projections of the four extended electrodes 622 onto the carrier substrate are respectively located within the vertical projection range of the cutout areas 632 of the four first electrode blocks 631 adjacent to the second electrode block 621 onto the carrier substrate, the extended electrodes 622 of two adjacent and connected second electrode blocks 621 are connected to form a connecting bridge between the two adjacent and connected second electrode blocks 621. Therefore, each cutout area 632 of the first electrode block 631 has four extended electrodes 622, which are the extended electrodes 622 of the four second electrode blocks 621 adjacent to the first electrode block 631, and the four extended electrodes 622 form two connecting bridges, which are not in contact (i.e., insulated from each other).

[0081] Figure 16 This is a partial top view of another capacitive touch component provided in an embodiment of the present invention. Figure 17 for Figure 16 A partial structural diagram of the second electrode. Figure 18 for Figure 16 A partial structural diagram of the first electrode in this embodiment. Figure 15 The identical parts of the embodiments shown will not be repeated here, and the differences are described as follows:

[0082] like Figures 16-18 As shown, both the second electrode block 721 and the first electrode block 731 are hollowed out. The second electrode block 721 has four extended electrodes 722. The vertical projections of the four extended electrodes 722 on the carrier substrate are respectively located within the vertical projection range of the hollowed-out areas 732 of the four adjacent first electrode blocks 731 on the carrier substrate. The extended electrodes 722 of two adjacent and connected second electrode blocks 721 are connected to form a connecting bridge between the two adjacent and connected second electrode blocks 721. The first electrode block 731 also has four extended electrodes 733. The vertical projections of the four extended electrodes 733 on the carrier substrate are respectively located within the vertical projection range of the hollowed-out areas 723 of the four adjacent second electrode blocks 721 on the carrier substrate. The extended electrodes 733 of two adjacent and connected first electrode blocks 731 are connected to form a connecting bridge between the two adjacent and connected first electrode blocks 731. That is, the two adjacent and connected second electrode blocks 721 have two connecting bridges, and the two adjacent and connected first electrode blocks 731 also have two connecting bridges, which solves the problem of weak signals at the ends of the first and second electrodes and improves touch sensitivity.

[0083] Figure 19 A partial top view of another capacitive touch component provided in an embodiment of the present invention, as shown below. Figure 19 As shown, this embodiment is similar to Figure 18 The same parts of the embodiments shown will not be repeated here. The differences are: the extension electrode 822 does not expand the surface area, but the corner is rounded, and the extension electrode 833 does not expand the surface area, but the corner is rounded.

[0084] Figure 20 A partial top view of another capacitive touch component provided in an embodiment of the present invention, as shown below. Figure 20 As shown, this embodiment is similar to Figure 19 The same parts of the embodiments shown will not be repeated here. The difference is that the extension electrode 922 is not specially treated, and the extension electrode 933 is a connecting line that is consistent with the extension direction of the first electrode.

[0085] In the above embodiments, the first electrode and the second electrode may be disposed on different layers. The capacitive touch component includes a first conductive layer, a second conductive layer, and an insulating layer disposed between the first conductive layer and the second conductive layer. The first electrode and the second extended electrode are disposed on the first conductive layer, and the second electrode and the first extended electrode are disposed on the second conductive layer.

[0086] Figure 21 Figure 4 A partial cross-sectional view of the capacitive touch component in the image, with the cross-sectional lines shown in Figure AA. Figures 4-6 , Figure 21 As shown, the capacitive touch assembly includes a carrier substrate 110, a second conductive layer L2, an insulating layer 140, and a first conductive layer L1 stacked sequentially. A second electrode 120 and an extended electrode 122 are disposed on the first conductive layer L1, and a first electrode 130 is disposed on the second conductive layer L2. In the second electrode 120, two adjacent second electrode blocks 121 are connected via a connecting portion 124 located on the first conductive layer L1. In the first electrode 130, two adjacent first electrode blocks 131 are connected via a connecting portion 134 located on the second conductive layer L2.

[0087] In the above embodiments, the electrode blocks of the first electrode and the second electrode can be disposed on the same layer. The capacitive touch assembly includes a first conductive layer, a second conductive layer, and an insulating layer disposed between the first and second conductive layers. The first electrode block, the second electrode block, the first extended electrode, and the second extended electrode are disposed on the first conductive layer. Two adjacent first electrode blocks are connected by a second connecting portion located on the first conductive layer. Two adjacent second electrode blocks are connected by a conductive bridge located on the second conductive layer, and the vertical projections of the conductive bridge and the second connecting portion on the carrier substrate are intersected.

[0088] Figure 22 Figure 4A partial cross-sectional view of the capacitive touch component, with the cross-sectional lines shown in AA. Figure 23 for Figure 4 A partial cross-sectional view of the capacitive touch component in the image, with the cross-sectional lines shown in Figure BB. Figures 4-6 , Figure 22 , Figure 23 As shown, the capacitive touch component includes a carrier substrate 110, a second conductive layer L2, an insulating layer 140, and a first conductive layer L1 stacked in sequence.

[0089] The first electrode block 131 of the first electrode 130, the second electrode block 121 of the second electrode 120, and the extended electrode 122 are disposed on the first conductive layer L1. In the first electrode 130, two adjacent first electrode blocks 131 are connected by a connecting portion 134 located in the first conductive layer L1. In the second electrode 120, two adjacent second electrode blocks 121 are connected by a conductive bridge 124 located in the second conductive layer L2. The vertical projections of the conductive bridge 124 and the connecting portion 134 on the carrier substrate are intersected. The second electrode block 121 and the extended electrode 122 are connected by a connecting portion 123 located in the second conductive layer L2.

[0090] Specifically, the insulating layer 140 has several first through holes penetrating the insulating layer 140. The first through holes are filled with first connecting posts. The first connecting posts can be formed by the second electrode blocks 121 extending into the first through holes. Two adjacent and connected second electrode blocks 121 are electrically connected to the conductive bridge 124 through the first connecting posts, thereby connecting the two second electrode blocks 121.

[0091] The insulating layer 140 also has a plurality of second through holes penetrating the insulating layer 140. A second connecting post 125, a second electrode block 121, and an extension electrode 122 are disposed within each second through hole. Each is connected to the connecting portion 123 via a second connecting post 125, thereby connecting the second electrode block 121 and the extension electrode 122. For example, the second connecting post 125 may be formed by the extension electrode 122 and the second electrode block 121 extending into the second through hole.

[0092] It should be noted that the above embodiments are based on Figure 4 The capacitive touch component shown is an example to illustrate the layer structure of the capacitive touch component in this embodiment of the invention. In other embodiments of the invention, the layer structure of the capacitive touch component is similar, and will not be described again here.

[0093] This invention also provides a capacitive screen, including the capacitive touch component provided in any of the above embodiments of this invention. Of course, the capacitive screen also includes a display component, such as a self-emissive OLED display component or an LED display component with a backlight component. This invention does not limit the scope of the present invention.

[0094] This invention also provides a touch device, including a capacitive screen as provided in any of the above embodiments of this invention. The touch device may be an electronic device such as a touchpad, a smartphone, or a smart tablet, and this invention does not limit it.

[0095] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," etc., are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0096] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0097] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0098] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A capacitive touch component, characterized in that, include: Carrier substrate; Multiple first electrodes and multiple second electrodes are disposed on the carrier substrate. The first electrode includes multiple first electrode blocks arranged along a first direction and connected in sequence. The second electrode includes multiple second electrode blocks arranged along a second direction and connected in sequence. The first electrode is a sensing electrode and the second electrode is a driving electrode, or the first electrode is a driving electrode and the second electrode is a sensing electrode. The first electrode and the second electrode are insulated from each other, and their vertical projections on the carrier substrate are staggered, while the vertical projections of each electrode block on the carrier substrate do not overlap. The interior of the first electrode block is hollowed out to form a first hollowed-out area. The second electrode block has at least one first extended electrode. The first extended electrode is connected to the second electrode block, and the vertical projection of the first extended electrode on the carrier substrate is located within the vertical projection range of the first hollowed-out area on the carrier substrate. The first extended electrodes of two adjacent and connected second electrode blocks are connected to form a connecting bridge between the two adjacent and connected second electrode blocks, forming a branch in parallel with the connecting line; The first extended electrode is connected to the second electrode block via a first connecting portion.

2. The capacitive touch component according to claim 1, characterized in that, The second electrode block has four first extended electrodes. The vertical projection of the four first extended electrodes on the carrier substrate is respectively located within the vertical projection range of the first cutout area of ​​the four first electrode blocks adjacent to the second electrode block on the carrier substrate. Two adjacent and connected second electrode blocks have two connecting bridges.

3. The capacitive touch component according to claim 1, characterized in that, The vertical projection area of ​​the first extended electrode on the carrier substrate is greater than the vertical projection area of ​​the first connecting portion on the carrier substrate.

4. The capacitive touch component according to claim 1, characterized in that, The interior of the second electrode block is hollowed out to form a second hollowed-out area. The first electrode block has at least one second extended electrode. The second extended electrode is connected to the first electrode block, and the vertical projection of the second extended electrode on the carrier substrate is located within the vertical projection range of the second hollowed-out area on the carrier substrate.

5. The capacitive touch component according to claim 4, characterized in that, The capacitive touch component includes a first conductive layer, a second conductive layer, and an insulating layer disposed between the first conductive layer and the second conductive layer; The first electrode and the second extended electrode are disposed on the first conductive layer, and the second electrode and the first extended electrode are disposed on the second conductive layer.

6. The capacitive touch component according to claim 4, characterized in that, The capacitive touch component includes a first conductive layer, a second conductive layer, and an insulating layer disposed between the first conductive layer and the second conductive layer; The first electrode block, the second electrode block, the first extended electrode, and the second extended electrode are disposed on the first conductive layer; Two adjacent first electrode blocks are connected by a second connection portion located in the first conductive layer; Two adjacent second electrode blocks are connected by a conductive bridge located in the second conductive layer, and the vertical projections of the conductive bridge and the second connection portion on the carrier substrate are intersected.

7. The capacitive touch component according to claim 6, characterized in that, The insulating layer has a plurality of first through holes penetrating the insulating layer. A first connecting post is provided in the first through hole. Two adjacent and connected second electrode blocks are electrically connected to the conductive bridge through the first connecting post. The insulating layer has a plurality of second through holes penetrating the insulating layer. A second connecting post is provided in the second through hole. The second electrode block and the first extension electrode are respectively connected to the first connecting part through a second connecting post, so that the second electrode block is connected to the first extension electrode.

8. A capacitive touchscreen, characterized in that, Includes the capacitive touch component as described in any one of claims 1-7.

9. A touch device, characterized in that, Including the capacitive screen as described in claim 8.

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