A touch panel and a display device

Abstract

An embodiment of the present application provides a touch panel and a display device. The touch panel includes: a substrate; a first touch electrode layer disposed on the substrate, including a first conductive region and a first hollowed-out region, the first conductive region being distributed in a grid pattern; a second touch electrode layer disposed on the substrate, including a second conductive region, a third conductive region, and a second hollowed-out region, the second conductive region being in communication with the third conductive region, the area of the second conductive region being larger than the area of the third conductive region, the second conductive region not overlapping with the first conductive region, and the third conductive region overlapping with the first conductive region. The present application achieves improvement in the anti-interference performance and accuracy of the touch panel.

Description

Technical Field

[0001] The present application relates to the field of touch technology, and more particularly, to a touch panel and a display device. Background Art

[0002] With the development of science and technology, the speed of replacement of electronic devices is getting faster and faster. At present, electronic devices are developing towards the direction of being thinner and lighter. In existing ultra-thin electronic devices, the medium OCA (Optically Clear Adhesive) between the two layers of electrodes of the touch panel usually selects very thin types, which makes the distance between the two layers of electrodes smaller, and the original capacitance value C0 of the two layers of electrodes increases. The touch change amount D0 of the electronic device is mainly related to the top electrode pattern. D0 / C0 reflects the signal amount induction level of the electrode. Therefore, in the case of an unchanged pattern in an ultra-thin electronic device, C0 will increase a lot, while D0 remains almost unchanged, resulting in a very small induction amount of the entire electronic device and unable to meet the normal realization of the touch function.

[0003] In the prior art, by replacing the original large-area bottom electrode with a narrower effective electrode, the overlapping area between the bottom electrode and the top electrode is reduced, thereby reducing C0 to ensure the normal realization of the touch function of the electronic device. Although this method solves the problem of the increase in the original capacitance value caused by the reduction of the distance between the two layers of electrodes in the ultra-thin electronic device, since the large-area electrode can play a certain shielding role for the interference source below the electrode, after the bottom electrode becomes narrower, the shielding effect is significantly weakened, resulting in poor anti-interference performance and accuracy of the touch panel. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a touch panel and a display device to improve the anti-interference performance and accuracy of the touch panel.

[0005] In a first aspect of the embodiments of the present application, a touch panel is provided, including: a substrate; a first touch electrode layer disposed on the substrate, including a first conductive region and a first hollow region, the first conductive region being distributed in a grid pattern; a second touch electrode layer disposed on the substrate, including a second conductive region, a third conductive region, and a second hollow region, the second conductive region being connected to the third conductive region, the area of the second conductive region being larger than the area of the third conductive region, the second conductive region not overlapping with the first conductive region, and the third conductive region overlapping with the first conductive region.

[0006] In one embodiment, the first conductive region is composed of a plurality of first touch electrode groups arranged along a first direction, the first touch electrode groups extending along a second direction, the first direction intersecting with the second direction.

[0007] In one embodiment, the first touch electrode group includes: a first electrode unit composed of a plurality of first X-shaped electrodes connected in sequence along the second direction; a second electrode unit including two first strip-shaped electrodes, and the two first strip-shaped electrodes are respectively connected to the first X-shaped electrodes at both ends of the first electrode unit.

[0008] In one embodiment, the second conductive region and the third conductive region are composed of a plurality of second touch electrode groups arranged along the second direction, and the second touch electrode groups extend along the first direction.

[0009] In one embodiment, the second touch electrode group includes: a third electrode unit composed of a plurality of diamond-shaped electrodes arranged at intervals along the first direction; a fourth electrode unit including a plurality of triangular electrodes, and the triangular electrodes are arranged at intervals around the third electrode unit; a fifth electrode unit including a plurality of second strip-shaped electrodes, and the diamond-shaped electrodes and the adjacent triangular electrodes are connected by the second strip-shaped electrodes.

[0010] In one embodiment, the third electrode unit and the fourth electrode unit overlap with the first hollow region.

[0011] In one embodiment, the second touch electrode group includes: a sixth electrode unit composed of a plurality of second X-shaped electrodes connected in sequence along the first direction; a seventh electrode unit including two V-shaped electrodes, and the two V-shaped electrodes are respectively connected to the second X-shaped electrodes at both ends of the sixth electrode unit.

[0012] In one embodiment, virtual blocks are provided in both the first hollow region and the second hollow region.

[0013] In one embodiment, the first conductive region is an induction electrode, and the second conductive region and the third conductive region are drive electrodes.

[0014] In the second aspect of the embodiments of the present application, a display device is provided, including a display panel; and a touch panel according to the first aspect of the embodiments of the present application and any one of its embodiments, where the touch panel is connected to the display panel.

[0015] The beneficial effects brought by the technical solution provided by the embodiments of the present invention are as follows: The overlapping area between the two layers of electrodes is effectively reduced, the original capacitance value formed by the two layers of electrodes is decreased, which can ensure the normal realization of the touch function. Moreover, the overlapping positions are evenly distributed in the electrodes, so that the finished product signal amount is also evenly distributed. Except for the overlapping area with the top-layer electrode track, large-area electrodes can be used in other areas of the bottom-layer electrode, thereby shielding the interference of the bottom layer of the electrode and improving the anti-interference ability. Description of the Drawings

[0016] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the embodiments of the present application will be briefly introduced below. It should be understood that the following accompanying drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related accompanying drawings can also be obtained based on these drawings.

[0017] Figure 1 Structural schematic diagram of a touch panel according to an embodiment of the present application;

[0018] Figure 2 Structural schematic diagram of a first touch electrode layer according to an embodiment of the present application;

[0019] Figure 3 Structural schematic diagram of a first touch electrode layer filled with virtual blocks according to an embodiment of the present application;

[0020] Figure 4 Structural schematic diagram of a first touch electrode layer according to another embodiment of the present application;

[0021] Figure 5 Structural schematic diagram of a first touch electrode group according to an embodiment of the present application;

[0022] Figure 6 Structural schematic diagram of a second touch electrode layer according to an embodiment of the present application;

[0023] Figure 7 Structural schematic diagram of a second touch electrode layer filled with virtual blocks according to an embodiment of the present application;

[0024] Figure 8 Structural schematic diagram of a second touch electrode layer according to another embodiment of the present application;

[0025] Figure 9 Structural schematic diagram of a second touch electrode group according to an embodiment of the present application;

[0026] Figure 10 Structural schematic diagram of a second touch electrode group according to another embodiment of the present application.

[0027] Reference numerals:

[0028] 100 - First touch electrode layer, 110 - First conductive region, 120 - First hollowed - out region, 130 - First touch electrode group, 131 - First electrode unit, 1311 - First X - shaped electrode, 132 - Second electrode unit, 1321 - First strip - shaped electrode;

[0029] 200 - Second touch electrode layer, 210 - Second conductive region, 220 - Third conductive region, 230 - Second hollow region, 240 - Second touch electrode group, 241 - Third electrode unit, 2411 - Rhombic electrode, 242 - Fourth electrode unit, 2421 - Triangular electrode, 243 - Fifth electrode unit, 2431 - Second strip electrode, 244 - Sixth electrode unit, 2441 - Second X-shaped electrode, 245 - Seventh electrode unit, 2451 - V-shaped electrode;

[0030] 300 - Virtual block, 400 - First direction, 500 - Second direction, 600 - Substrate, 1 - Touch panel. Detailed implementation mode

[0031] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

[0032] In the description of the present application, terms such as "first", "second", etc. are only used for distinguishing descriptions, do not represent the serial number of arrangement, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present application, terms such as "including", "comprising", etc. indicate the existence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the existence or addition of one or more other features, steps, operations, elements, components and / or their combinations.

[0034] In the description of the present application, terms such as "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0035] In the description of the present application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing the present application, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0036] In the description of the present application, unless otherwise clearly specified and defined, the terms "installed", "set", "provided with", "connected", "configured to" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, components or parts. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0037] In the description of the present application, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention pertains. It should also be understood that terms such as those defined in a general dictionary should be interpreted as having a meaning consistent with their meaning in the context of the relevant field, and should not be interpreted in an overly idealized or overly formal sense, unless clearly defined herein.

[0038] Please refer to Figure 1 , which is a schematic structural diagram of a touch panel 1 according to an embodiment of the present application. The touch panel 1 includes a substrate 600, a first touch electrode layer 100, and a second touch electrode layer 200. The first touch electrode layer 100 and the second touch electrode layer 200 are both disposed on the substrate 600. In one embodiment, the first touch electrode layer 100 and the second touch electrode layer 200 are stacked, the first touch electrode layer 100 is the top electrode, and the second touch electrode layer 200 is the bottom electrode.

[0039] As Figure 2 shown, which is a schematic structural diagram of the first touch electrode layer 100 in an embodiment of the present application. The first touch electrode layer 100 includes a first conductive region 110 and a first hollowed-out region 120, and the first conductive region 110 is distributed in a grid pattern.

[0040] In one embodiment, the first hollowed-out region 120 is composed of a plurality of rhombus regions and a plurality of triangular regions, and a virtual (dummy) block 300 is filled in the first hollowed-out region 120. As Figure 3 shown, which is a schematic structural diagram of the first touch electrode layer 100 after filling with the virtual block 300.

[0041] In one embodiment, the first conductive region 110 is composed of a plurality of first touch electrode groups 130 arranged along a first direction 400. The first touch electrode groups 130 extend along a second direction 500, and the first direction 400 and the second direction 500 intersect. In one embodiment, the first direction 400 and the second direction 500 are perpendicular. Figure 1 , Figure 2 and Figure 3In all cases, three first touch electrode groups 130 are taken as an example. In the specific implementation process, the first conductive region 110 may be composed of fewer or more first touch electrode groups 130 arranged along the first direction 400. For example, Figure 4 shown, which is a schematic structural diagram of the first touch electrode layer 100 in another embodiment of the present application.

[0042] In one embodiment, the first touch electrode group 130 includes a first electrode unit 131 and a second electrode unit 132. Among them, the first electrode unit 131 is composed of a plurality of first X-shaped electrodes 1311 connected in sequence along the second direction 500. The second electrode unit 132 includes two first strip-shaped electrodes 1321, and the two first strip-shaped electrodes 1321 are respectively arranged at both ends of the first electrode unit 131 and are connected to the first X-shaped electrodes at both ends of the first electrode unit 131.

[0043] Figure 1 、 Figure 2 and Figure 3 In all cases, each first touch electrode group 130 including three first X-shaped electrodes 1311 is taken as an example. In the specific implementation process, the first electrode unit 131 of each first touch electrode group 130 may be composed of fewer or more first X-shaped electrodes 1311 connected in sequence along the second direction 500. For example, Figure 5 shown, which is a schematic structural diagram of the first touch electrode group 130 in another embodiment of the present application.

[0044] Such as Figure 6 shown, which is a schematic structural diagram of the second touch electrode layer 200 in an embodiment of the present application. The second touch electrode layer 200 includes a second conductive region 210, a third conductive region 220, and a second hollowed-out region 230. Among them, the second conductive region 210 does not overlap with the first conductive region 110 of the first touch electrode layer 100. The second conductive region 210 and the third conductive region 220 are connected, and the area of the second conductive region 210 is larger than the area of the third conductive region 220.

[0045] In one embodiment, the second conductive region 210 includes a plurality of large-area electrodes arranged at intervals, the third conductive region 220 includes a plurality of narrow electrodes, the area of the second conductive region 210 is much larger than the area of the third conductive region 220, the third conductive region 220 overlaps with the first conductive region 110, and the large-area electrodes arranged at intervals in the second conductive region 210 are interconnected through the narrow electrodes of the third conductive region 220.

[0046] In one embodiment, the second hollowed-out region 230 is filled with a virtual block 300. For example, Figure 7 shown, which is a schematic structural diagram of the second touch electrode layer 200 filled with the virtual block 300.

[0047] In one embodiment, the second conductive region 210 and the third conductive region 220 are composed of a plurality of second touch electrode groups 240 arranged along the second direction 500. The second touch electrode groups 240 extend along the first direction 400, and the first direction 400 intersects the second direction 500. In one embodiment, the first direction 400 and the second direction 500 are perpendicular. Figure 1 、 Figure 6 and Figure 7 In all of Figure 1 , Figure 6 , and Figure 7 , three second touch electrode groups 240 are taken as an example. In the specific implementation process, the second conductive region 210 and the third conductive region 220 may be composed of fewer or more second touch electrode groups 240 arranged along the second direction 500. As shown in Figure 8 which is a schematic structural diagram of the second touch electrode layer 200 in another embodiment of the present application.

[0048] In one embodiment, the first conductive region 110 is a sensing electrode (RX), and the second conductive region 210 and the third conductive region 220 are driving electrodes (TX).

[0049] In one embodiment, the second touch electrode group 240 includes a third electrode unit 241, a fourth electrode unit 242, and a fifth electrode unit 243. Among them, the third electrode unit 241 is composed of a plurality of diamond electrodes 2411 arranged at intervals along the first direction 400. The fourth electrode unit 242 includes a plurality of triangular electrodes 2421, and the triangular electrodes 2421 are arranged at intervals around the third electrode unit 241. The fifth electrode unit 243 includes a plurality of second strip electrodes 2431. The diamond electrodes 2411 are connected to the adjacent triangular electrodes 2421 through the second strip electrodes 2431. Moreover, the third electrode unit 241 and the fourth electrode unit 242 overlap with the first hollow region 120.

[0050] Figure 1 、 Figure 6 and Figure 7 In all of ,

[0050] , and Figure 1 , it is taken as an example that each second touch electrode group 240 includes two diamond electrodes 2411 and eight triangular electrodes 2421. In the specific implementation process, the third electrode unit 241 of each second touch electrode group 240 may be composed of fewer or more diamond electrodes 2411 arranged at intervals along the first direction 400. The fourth electrode unit 242 may include fewer or more triangular electrodes 2421 arranged at intervals around the third electrode unit 241. As shown in Figure 9 which is a schematic structural diagram of the second touch electrode group 240 in another embodiment of the present application.

[0051] In one embodiment, the first touch electrode layer 100 filled with the virtual blocks 300 as shown in Figure 3 , and Figure 7The second touch electrode layer 200 filled with the virtual blocks 300 as shown is stacked and arranged on the substrate 600, that is, it constitutes Figure 1 the touch panel 1 as shown. Since the first conductive region 110 of the first touch electrode layer 100 does not overlap with the second conductive region 210 of the second touch electrode layer 200, the overlapping area between the two layers of electrodes is effectively reduced, the original value of the capacitance formed by the two layers of electrodes is decreased, and the normal implementation of the touch function is ensured. The third conductive region 220 of the second touch electrode layer 200 overlaps with the first conductive region 110, and the overlapping position is used to implement capacitive coupling. Moreover, the overlapping positions are evenly distributed in the electrodes, so that the distribution of the finished product signal amount of the touch panel 1 is also very uniform. In addition, the second conductive region 210 can still adopt a large-area electrode, so as to shield the interference of the underlying layer of the electrode and improve the anti-interference ability.

[0052] As Figure 10 shown, it is a schematic structural diagram of the second touch electrode group 240 in another embodiment of the present application. The second touch electrode group 240 includes a sixth electrode unit 244 and a seventh electrode unit 245. Among them, the sixth electrode unit 244 is composed of a plurality of second X-shaped electrodes 2441 connected in sequence along the first direction 400, and the seventh electrode unit 245 includes two V-shaped electrodes 2451. The two V-shaped electrodes 2451 are respectively arranged at both ends of the sixth electrode unit 244 and are connected to the second X-shaped electrodes 2441 at both ends of the sixth electrode unit 244.

[0053] In an embodiment, the touch panel 1 can be applied to a display device, and the display device can be any product with a display function including but not limited to mobile phones, tablet computers, televisions, monitors, laptop computers, digital photo frames, navigators, etc. The display device includes a display panel and the touch panel 1.

[0054] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and the key points of each embodiment are the differences from other embodiments. The above are only the preferred embodiments of the present application, which are only used to illustrate the technical solutions of the present application and are not used to limit the present application. For those of ordinary skill in the art, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A touch panel, characterized in that, Comprising: A substrate; A first touch electrode layer disposed on the substrate, including a first conductive region and a first hollowed-out region, the first conductive region being distributed in a grid pattern; A second touch electrode layer disposed on the substrate, including a second conductive region, a third conductive region, and a second hollowed-out region, the second conductive region communicating with the third conductive region, the area of the second conductive region being larger than the area of the third conductive region, the second conductive region not overlapping with the first conductive region, and the third conductive region overlapping with the first conductive region; The first conductive region is composed of multiple first touch electrode groups arranged along a first direction, the first touch electrode groups extending along a second direction, the first direction intersecting with the second direction; The second conductive region and the third conductive region are composed of multiple second touch electrode groups arranged along the second direction, the second touch electrode groups extending along the first direction; The second touch electrode group includes: A third electrode unit composed of multiple diamond-shaped electrodes spaced along the first direction; A fourth electrode unit including multiple triangular electrodes, the triangular electrodes being spaced around the third electrode unit; A fifth electrode unit including multiple second strip-shaped electrodes, the diamond-shaped electrodes being connected to adjacent triangular electrodes through the second strip-shaped electrodes; The first touch electrode layer and the second touch electrode layer are stacked, the first touch electrode layer being the top electrode and the second touch electrode layer being the bottom electrode.

2. The touch panel according to claim 1, wherein The first touch electrode group includes: A first electrode unit composed of multiple first X-shaped electrodes sequentially connected along the second direction; A second electrode unit including two first strip-shaped electrodes, the two first strip-shaped electrodes being respectively connected to the first X-shaped electrodes at both ends of the first electrode unit.

3. The touch panel according to claim 1, wherein The third electrode unit and the fourth electrode unit overlap with the first hollowed-out region.

4. The touch panel according to claim 1, wherein Virtual blocks are provided in both the first hollowed-out region and the second hollowed-out region.

5. The touch panel according to claim 1, characterized in that, The first conductive region is an induction electrode, and the second conductive region and the third conductive region are drive electrodes.

6. A display device, characterized in that, Comprising: A display panel; The touch panel according to any one of claims 1 to 5, the touch panel being connected to the display panel.

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