The disclosure claims the priority of Chinese Patent Application No. 201721643622.1 filed on Nov. 30, 2017, entitled “TOUCH PANEL AND TOUCH DISPLAY DEVICE”, the entire contents of which are incorporated in the disclosure by reference herein in their entirety.
The disclosure relates to the field of touch technology, and in particular to a touch panel and a touch display device.
In the prior art, a touch panel, as an input device, is generally used for an electronic terminal such as a mobile phone, a tablet computer, and a touch panel, and for receiving from a user touch operation instructions such as clicking and sliding on the touch panel.
The existing touch panel often includes a first direction electrode 11 and a second direction electrode 12. As shown in
In the existing touch panel, the adjacent block electrodes are connected only by the metal bridge. Since the metal bridge is comparatively thin, the metal bridge is prone to breaking during use and causes a broken circuit between the adjacent block electrodes, thereby resulting in poor overall touch performance of the touch screen, and even touch failure.
Embodiments of the disclosure provide a touch panel and a touch display device, which aim to improve the problem of touch failure due to the breakage of the metal bridge in the touch panel during use in the prior art.
Embodiments of the disclosure provide the following technical solutions:
a touch panel, comprising: a plurality of first touch electrode patterns arranged along a first direction, the first touch electrode pattern comprising a plurality of first touch units and a connection unit for connecting two adjacent first touch units;
a plurality of second touch electrode patterns arranged along a second direction and insulated from and intersected with the first touch electrode patterns, the second touch electrode pattern comprising a plurality of independent second touch units and at least one metal bridge for connecting two adjacent second touch units, wherein the at least one metal bridge has a hollow-out pattern, and two ends of the metal bridge are overlapped on the two adjacent second touch units respectively.
Preferably, at least two metal bridges are arranged in parallel between the two adjacent second touch units.
Preferably, each metal bridge has a grid pattern.
Preferably, the metal bridge further comprises a plurality of contact portions located at both ends of the metal bridge and for contacting and connecting the second touch units, and a width of the contact portions along a direction perpendicular to an extending direction of the metal bridge is greater than a width of other portions of the metal bridge.
Preferably, the two adjacent second touch units corresponding to any one of the metal bridges each have a concave-convex structure at a spaced channel, and the two second touch units are connected by the metal bridges via the shortest distance.
Preferably, the connection unit of the first touch electrode pattern has a concave-convex structure matching with a concave-convex structure of the second touch electrode pattern.
Preferably, an extending direction of the hollow-out pattern of the at least one metal bridge is arranged along the second direction.
A touch display device is provided, comprising a touch panel according to any one of the above touch panels.
The following beneficial effects can be achieved by at least one technical solution adopted by the embodiments of the disclosure:
In the technical solutions provided by the disclosure, a metal bridge is designed as having a hollow-out structure, and at least two channels for touch signal transmission are formed in the metal bridge. When one of the channels for touch signal transmission is broken, the other channels for touch signal transmission can still perform signal transmission, thereby alleviating the problem of poor touch function and even touch failure after the breakage of the metal bridge in the touch panel in the prior art and improving the durability of the touch panel to some extent. Especially for the flexible touch panel, the structure of the disclosure can further improve the durability of the flexible touch panel, alleviate the influence of the metal bridge breakage on the touch performance during a bending process, and prolong the life of the touch panel. In addition, a plurality of metal bridges arranged between two adjacent touch units can increase touch sensitivity and enhance touch performance of the entire touch panel.
The technical solutions of the disclosure will be clearly and completely described below in conjunction with the specific embodiments of the disclosure and the corresponding drawings.
With reference to
a plurality of first touch electrode patterns arranged along a first direction, the plurality of first touch electrode comprising a plurality of first touch units 21 and a connection unit for connecting two adjacent first touch units 21;
a plurality of second touch electrode patterns arranged along a second direction and insulated from and intersected with the first touch electrode patterns, the second touch electrode pattern comprising a plurality of independent second touch units 22 and at least one metal bridge 23 for connecting two adjacent second touch units 22, wherein the at least one metal bridge 23 has a hollow-out pattern, and two ends of the metal bridge are overlapped on the two adjacent second touch units respectively.
In
As for the structure of the metal bridge 23 with the hollow-out pattern provided by the disclosure, with reference to
As can be seen, in the technical solution provided by the disclosure, a metal bridge is designed as having a hollow-out structure, and at least two channels for touch signal transmission are formed in the metal bridge. When one of the channels for touch signal transmission is broken, the other channels for touch signal transmission may still perform signal transmission, alleviating the problem of poor touch function and even touch failure after the breakage of the metal bridge in the touch panel in the prior art and improving the durability of the touch panel to some extent. Especially for a flexible touch panel, the structure of the disclosure can further improve the durability of the flexible touch panel, alleviate the influence of the metal bridge breakage on the touch performance during a bending process, and prolong the life of the touch panel.
Based on the touch panel provided by the embodiment 1, the disclosure further provides a touch panel structure. With reference to
With the above structure, when one of the metal bridges breaks many times and each channel for touch signal transmission included in the metal bridge is unable to perform electrical signal transmission due to its breakage, the other metal bridges may still perform electrical signal transmission between the two adjacent touch electrodes. For example, the structure in
In addition, when a user performs a touch operation, it is also possible to discharge static electricity to the touch panel through a fingertip so that the metal bridge is damaged by static electricity. In the disclosure, an influence of static electricity on the touch performance may be reduced to some extent by the plurality of metal bridges 23 arranged between the two adjacent second touch units 22. Moreover, in the disclosure, the metal bridge has a hollow-out structure so that the metal bridge has a plurality of channels for touch signal transmission. When the metal bridge is damaged by static electricity, only some transmission channels in the metal bridge may be damaged, and the remaining transmission channels may still perform touch signal transmission. Therefore, the influence of electrostatic damage on the touch performance may be reduced by the structure of the disclosure and the durability of the touch panel may be improved.
Based on the touch panel provided by the above embodiment, each metal bridge 23 of the disclosure has a grid structure. With reference to
Based on the touch panel provided in the above embodiment, with reference to
Based on the structure provided by the above embodiment, the disclosure further provides a touch panel. With reference to
In
Based on the structure provided by the above embodiment, the disclosure further provides a touch panel. With reference to
The connection unit in the first touch electrode pattern in
Based on the touch panel structure provided by the above embodiment, the disclosure further provides a preferred touch panel, and the extending direction of the hollow-out pattern of the at least one metal bridge is arranged along the second direction.
The structural schematic view is shown in
Based on the touch panel provided by the above embodiment, with reference to
A touch display device includes any one of the touch panels involved in the above embodiments. The touch display device may be applied to an electronic device having the function of touch display. The touch display device provided by the embodiment may alleviate the problem of touch failure due to the breakage of the metal bridge in the touch panel, improve the durability of the entire touch display device, and prolong the service life of the device.
In addition, the display device may be any product or component having the display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and a smart wearable device. It should be understood by a person skilled in the art that there may be other indispensable components of the display device, which are not described herein, nor should be construed as limited to the application.
The above description is only embodiments of the disclosure and is not intended to limit the disclosure. For a person skilled in the art, the disclosure may have various modifications and changes. Any modification, equivalent replacement, and improvement made within the spirit and principle of the disclosure should fall into the scope of the claims of the disclosure.
Number | Date | Country | Kind |
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201721643622.1 | Nov 2017 | CN | national |
Filing Document | Filing Date | Country | Kind |
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PCT/CN2018/089546 | 6/1/2018 | WO | 00 |