CN111665989B - Touch device, manufacturing method thereof, touch method and electronic equipment - Google Patents

Abstract

The invention provides a touch device, comprising: a pressure detection unit configured to detect a touch pressure applied to the touch device; a touch detection unit configured to detect a touch signal applied to the touch device; and the control unit is configured to respond to the touch pressure within a pressure threshold range and generate a touch instruction according to the touch signal. The invention also provides a touch control method, electronic equipment and a manufacturing method of the touch control device. The touch device, the manufacturing method thereof, the touch method and the electronic equipment can better solve the problem of error touch of the touch device.

Description

Touch device and manufacturing method thereof, touch method, and electronic device

Technical Field

The present invention relates to the field of touch control technology, and in particular to a touch control device and a manufacturing method thereof, a touch control method, and an electronic device.

Background technique

Touch technology is a technology that uses human-computer interaction technology and hardware devices to achieve human-computer interaction operations of electronic devices through touch without traditional input devices (such as mouse, keyboard, etc.).

In the prior art, a touch control device can determine the touch position according to a corresponding detection signal when being touched and can then generate a touch control instruction based on the detection signal. However, the touch control device generally cannot determine whether the currently detected touch signal is a touch signal generated by a false touch, resulting in the inability of the prior art touch control device to solve the problem of false touches.

Summary of the invention

In view of this, one of the objectives of the embodiments of the present invention is to provide a touch device and a manufacturing method thereof, a touch method, and an electronic device to solve the above-mentioned problem.

Based on the above purpose, an embodiment of the present invention provides a touch control device, including:

a pressure detection unit, configured to detect a touch pressure applied to the touch device;

a touch detection unit, configured to detect a touch signal applied to the touch device;

The control unit is configured to generate a touch instruction according to the touch signal in response to the touch pressure being within a pressure threshold range.

Optionally, the touch device is a touch button.

Optionally, the control unit is configured to control the touch detection unit to detect a touch signal applied to the touch device in response to the touch pressure being within a pressure threshold range.

Optionally, the touch detection unit includes a touch electrode layer, an insulating layer and a wiring layer which are arranged in sequence; the electrodes in the touch electrode layer are correspondingly connected to the signal wirings in the wiring layer.

Optionally, the touch electrode layer includes a first electrode and a second electrode, and the routing layer includes a first signal routing and a second signal routing; the first electrode is electrically connected to the first signal routing through a first via hole, and the second electrode is electrically connected to the second signal routing through a second via hole.

Optionally, there are a plurality of first electrodes, which are arranged in a straight line or in an array with equal intervals; and the second electrode is arranged around the first electrode.

Optionally, the routing layer further includes shielding routing, and the shielding routing is arranged around the signal routing.

Optionally, the pressure detection unit includes a piezoelectric material layer; the piezoelectric material units in the piezoelectric material layer are correspondingly connected to the electrodes in the touch electrode layer.

An embodiment of the present invention provides an electronic device, including the touch control device as described above.

An embodiment of the present invention provides a touch control method, including:

receiving a touch pressure applied to the touch device detected by a pressure detection unit;

receiving a touch signal applied to the touch device detected by a touch detection unit;

In response to the touch pressure being within a pressure threshold range, the control unit generates a touch instruction according to the touch signal.

Optionally, receiving a touch signal applied to the touch device detected by a touch detection unit includes:

In response to the touch pressure being within a pressure threshold range, a touch signal applied to the touch device and detected by a touch detection unit is received.

An embodiment of the present invention provides a method for manufacturing a touch control device, comprising:

obtaining a substrate base plate;

forming a wiring layer on the substrate;

forming an insulating layer on the wiring layer;

A touch electrode layer is formed on the insulating layer; the electrodes in the touch electrode layer are correspondingly connected to the signal wirings in the wiring layer;

A piezoelectric material layer is formed on the touch electrode layer; and the piezoelectric material units in the piezoelectric material layer are correspondingly connected to the electrodes in the touch electrode layer.

From the above description, it can be seen that the touch control device and its manufacturing method, touch control method, and electronic device provided by the embodiment of the present invention detect the touch pressure through the pressure detection unit. When the touch pressure is within the pressure threshold range, the control unit generates a corresponding touch command according to the touch signal, so that when the touch pressure meets the requirements, the touch command is generated based on the touch signal, thereby avoiding the problem of false touch and improving the touch operation efficiency. In this way, the touch control device provided by the embodiment of the present invention adopts 3D pressure-sensitive touch, which can effectively avoid false touches during use.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic structural diagram of a touch control device provided by an embodiment of the present invention;

FIG2 is a schematic cross-sectional view of a touch control device provided by an embodiment of the present invention;

3 is a schematic diagram of a top view of the structure of a touch electrode layer and a piezoelectric material layer in an embodiment of the present invention;

FIG4 is a schematic diagram of a top view of the structure of a wiring layer in an embodiment of the present invention;

FIG5 is a schematic diagram of a flow chart of a touch control method of a touch control device provided by an embodiment of the present invention;

FIG. 6 is a schematic flow chart of a method for manufacturing a touch control device according to an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

FIG. 1 is a schematic structural diagram of a touch control device provided by an embodiment of the present invention.

As shown in FIG1 , the touch control device comprises:

a pressure detection unit 10, configured to detect a touch pressure applied to the touch device;

A touch detection unit 20, configured to detect a touch signal applied to the touch device;

The control unit 30 is configured to generate a touch instruction according to the touch signal in response to the touch pressure being within a pressure threshold range.

It can be seen from the above embodiments that the touch control device provided by the embodiment of the present invention detects the touch pressure through the pressure detection unit. When the touch pressure is within the pressure threshold range, the control unit generates a corresponding touch command according to the touch signal, so that when the touch pressure meets the requirements, the touch command is generated based on the touch signal, thereby avoiding the problem of false touch and improving the touch operation efficiency. In this way, the touch control device provided by the embodiment of the present invention adopts 3D pressure-sensitive touch, which can effectively avoid false touches during use.

Optionally, based on the judgment criteria of different touch products for false touch, the pressure threshold range can be set according to actual needs, and is not specifically limited here.

The current mechanical buttons are all convex designs, which affect the appearance of the product to a certain extent, especially the current mobile phones, which are tending to cancel the side button design. Therefore, in one or more embodiments of the present invention, the touch device is a touch button. For example, the touch device is used to replace the mechanical buttons on electronic devices such as mobile phones, tablet computers, and personal computers.

Since mechanical keys have the characteristic of being able to effectively prevent accidental touches, if the mechanical keys are changed to touch structures, because mechanical keys do not have the function of touch operation after the screen is unlocked like the touch screen, but can be pressed to issue corresponding instructions without unlocking or waking up, therefore, in the case of replacing mechanical keys with touch devices, the touch device provided in the embodiment of the present invention is more suitable for replacing mechanical keys because it needs to determine whether the touch pressure meets the requirements and can effectively prevent accidental touches.

In one or more embodiments of the present invention, the control unit 30 is configured to control the touch detection unit 20 to detect the touch signal applied to the touch device in response to the touch pressure being within the pressure threshold range. That is, first detect whether the touch pressure is within the pressure threshold range, and then detect the touch signal when the touch pressure meets the requirement, so that the detection of touch pressure and the detection of touch signal can be completed in time-sharing, and some circuits can be shared in design, thereby achieving the effect of simplifying the circuit structure.

In one or more embodiments of the present invention, as shown in FIG2 , the touch detection unit 20 includes a touch electrode layer 21, an insulating layer 22, and a wiring layer 23 arranged in sequence; the electrodes 211/212 in the touch electrode layer 21 are correspondingly connected to the signal wirings 231/232 (see FIG4 ) in the wiring layer 23. Optionally, the above-mentioned hierarchical structure can be arranged on a base substrate 24. Optionally, the base substrate 24 can be made of a PET substrate.

Optionally, referring to Figures 2 to 4, in one or more embodiments of the present invention, the touch electrode layer 21 includes a first electrode 211 and a second electrode 212, and the routing layer 23 includes a first signal routing 231 and a second signal routing 232; the first electrode 211 is electrically connected to the first signal routing 231 through a first via 221, and the second electrode 212 is electrically connected to the second signal routing 232 through a second via 222.

In addition, as shown in Figure 4, the routing layer 23 also includes a binding area 235, and the first signal routing 231 and the second signal routing 232 are both connected to the binding area 235 to transmit the electrical signal to an external circuit (such as an IC), so that the control unit 30 can process and analyze the electrical signal.

In one or more embodiments of the present invention, the number of the first electrodes 211 is multiple, and they are arranged in a straight line with equal spacing (as shown in FIG. 3 ) or in an array (not shown); the second electrode 212 is arranged around the first electrode 211, so that the first electrode 211 and the second electrode 212 can be made in the same layer, thereby saving the process. For example, as shown in FIG. 3 , the first electrode 211 is a block design, and the second electrode 212 is a whole channel design. The first electrode 211 is wrapped by the second electrode 212, and there is a gap between the first electrode 211 and the second electrode 212. The finger touch signal is detected by detecting the capacitance change between the first electrode 211 and the second electrode 212. In this embodiment, since the block-shaped first electrodes 211 exist independently, multi-touch is supported.

In one or more embodiments of the present invention, as shown in FIG4 , the routing layer 23 further includes a shielding routing 233, and the shielding routing 233 is arranged around the signal routing 231/232 to shield signal interference between the signal routings and signal interference between the signal routings and the touch electrode layer 21. Optionally, the shielding routing 233 is connected to a ground pin of the binding area 235 through a third signal routing 234, so that the shielding routing 233 is grounded, which can better achieve the effect of shielding the signal.

In one or more embodiments of the present invention, as shown in FIG2 , the pressure detection unit 10 includes a piezoelectric material layer 11; the piezoelectric material unit 111 in the piezoelectric material layer 11 is connected to the electrode 211/212 in the touch electrode layer 21. In this way, the piezoelectric material unit 111 can be electrically connected to the signal wiring 231/232 in the wiring layer 23 via the electrode 211/212 in the touch electrode layer 21, so that the piezoelectric material unit 111 and the electrode 211/212 can share the signal wiring 231/232, without the need to set a separate signal wiring for the piezoelectric material unit 111, thereby simplifying the overall structure and saving manufacturing process. On this basis, by performing time-sharing detection of touch pressure and touch signal, such a structure can be well utilized to realize the function of the touch device in the embodiment of the present invention.

Based on the formula: U = Q / C _p = (d ₃₃ × T × h) / (ε _r × ε ₀ ), d ₃₃ is the piezoelectric coefficient of the piezoelectric material unit, T is the touch pressure, h is the thickness of the piezoelectric material unit, ε _r is the relative dielectric constant of the piezoelectric material unit, and ε ₀ is the vacuum dielectric constant of the piezoelectric material unit. In a fixed stack, the voltage U is linearly related to the touch pressure T, so that the effective touch pressure (i.e., the effective activation voltage) can be defined, which can effectively avoid false touches during use.

Optionally, referring to FIGS. 2 to 4 , the piezoelectric material unit 111 is respectively connected to the first electrode 211 and the second electrode 212 , and further electrically connected to the first signal wiring 231 and the second signal wiring 232 in the wiring layer 23 .

Optionally, the number of the piezoelectric material units 111 is multiple, and they are arranged in a straight line with equal intervals (as shown in FIG. 3 ) or in an array (not shown); in this way, the piezoelectric material units 111 and the first electrodes 211 can be connected one-to-one, so that one first electrode can collect the electrical signal generated by pressure in one piezoelectric material unit 111 .

Optionally, as shown in FIG. 2 , the pressure detection unit 10 further includes a second insulating layer 12 , and the second insulating layer 12 surrounds the piezoelectric material unit 111 to achieve electrical insulation between the piezoelectric material unit 111 and other components.

The touch device of the laminated structure in the above embodiment adopts an in-cell touch control method without protruding buttons, ensuring the product is beautiful. At the same time, when the substrate 24 adopts a flexible substrate, the touch device has the characteristics of being bendable and having special-shaped cutting, and has a wide range of uses and application scenarios.

One or more embodiments of the present invention further provide an electronic device, which includes any embodiment or arrangement or combination of the above-mentioned touch control device.

It should be noted that the electronic device in this embodiment can be any product or component with buttons, such as electronic paper, mobile phone, tablet computer, television, notebook computer, digital photo frame, navigator, etc. The touch device is a touch button in the electronic device.

In the electronic device provided by one or more embodiments of the present invention, the touch device adopts an embedded touch design, which can realize a side-free convex key design while retaining a mechanical touch 3D pressure-sensitive touch effect, which can effectively avoid accidental touches, and the touch device is integrated into the side to retain the aesthetics. Optionally, when the touch device adopts a flexible substrate, it can be bent, so it can be applied to various occasions such as televisions, refrigerators, notebooks, elevators, etc.

One or more embodiments of the present invention further provide a touch control method. FIG5 is a schematic flow chart of a touch control method of a touch control device provided in an embodiment of the present invention.

As shown in FIG5 , the touch control method includes:

Step 402: Receive the touch pressure applied to the touch device detected by a pressure detection unit.

Optionally, piezoelectric material may be used to detect touch pressure.

Step 404: Receive a touch signal applied to the touch device detected by a touch detection unit.

Optionally, the touch control structure formed by the first electrode 211 and the second electrode 212 may be used to detect touch pressure.

Step 406: In response to the touch pressure being within the pressure threshold range, the control unit generates a touch instruction according to the touch signal.

From the above embodiments, it can be seen that the touch control method provided by the embodiment of the present invention detects the touch control pressure through the pressure detection unit. When the touch control pressure is within the pressure threshold range, the control unit generates a corresponding touch control instruction according to the touch control signal, so that when the touch pressure meets the requirements, the touch control instruction is generated based on the touch control signal, thereby avoiding the problem of false touch and improving the touch control operation efficiency. In this way, the touch control method provided by the embodiment of the present invention adopts 3D pressure-sensitive touch, which can effectively avoid false touch during use.

In one or more embodiments of the present invention, receiving a touch signal applied to the touch device detected by a touch detection unit includes:

In response to the touch pressure being within a pressure threshold range, a touch signal applied to the touch device and detected by a touch detection unit is received.

That is, first detect whether the touch pressure is within the pressure threshold range, and when the touch pressure meets the requirement, detect the touch signal, so that the touch pressure detection and touch signal detection can be completed in time-sharing, and some circuits can be shared in design, thereby achieving the effect of simplifying the circuit structure.

In one or more embodiments of the present invention, the touch method is implemented as follows: a finger presses the surface of the touch device, and a pressure detection unit generates a pressure response voltage, which is input into a control unit. When a certain pressure threshold is reached, a corresponding channel in the control unit is activated. At the same time, the capacitance between the first electrode 211 and the second electrode 212 at the corresponding position changes when the finger touches. The control unit responds to the capacitance change to realize the touch button function.

One or more embodiments of the present invention further provide a method for manufacturing a touch control device. FIG6 shows a schematic flow chart of a method for manufacturing a touch control device provided by an embodiment of the present invention.

As shown in FIG6 , the method for manufacturing the touch control device includes:

Step 502: Obtain a substrate; optionally, the substrate may be a flexible substrate, for example, a substrate made of a PET substrate.

Step 504: forming a wiring layer on the substrate;

Step 506: forming an insulating layer on the wiring layer;

Step 508: forming a touch electrode layer on the insulating layer; and correspondingly connecting electrodes in the touch electrode layer to signal traces in the trace layer;

Step 510: forming a piezoelectric material layer on the touch electrode layer; and connecting the piezoelectric material units in the piezoelectric material layer to the electrodes in the touch electrode layer accordingly.

It can be seen from the above embodiments that the touch device manufactured by the manufacturing method of the touch device provided by the embodiment of the present invention detects the touch pressure through the pressure detection unit. When the touch pressure is within the pressure threshold range, the control unit generates a corresponding touch command according to the touch signal, so that when the touch pressure meets the requirements, the touch command is generated based on the touch signal, thereby avoiding the problem of false touch and improving the touch operation efficiency. In this way, the touch method provided by the embodiment of the present invention adopts 3D pressure-sensitive touch, which can effectively avoid false touches during use.

It should be noted that the above-mentioned layer formation operations include but are not limited to (chemical phase, physical phase) deposition film formation and (magnetron) sputtering film formation, and those skilled in the art can understand that after each layer is formed, a corresponding pattern can be further formed thereon as needed, and the present invention will not go into details therein.

It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

Those skilled in the art should understand that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A touch device, comprising: a pressure detection unit, configured to detect a touch pressure applied to the touch device; a touch detection unit, configured to detect a touch signal applied to the touch device; a control unit configured to, in response to the touch pressure being within a pressure threshold range, control the touch detection unit to detect a touch signal applied to the touch device, and generate a touch instruction according to the touch signal; The touch detection unit comprises a touch electrode layer, an insulating layer and a wiring layer arranged in sequence, wherein the electrodes in the touch electrode layer are correspondingly connected to the signal wirings in the wiring layer; the pressure detection unit comprises a piezoelectric material layer, wherein the piezoelectric material units in the piezoelectric material layer are correspondingly contacted and connected to the electrodes in the touch electrode layer; The touch electrode layer includes a first electrode and a second electrode, and the routing layer includes a first signal routing and a second signal routing; the first electrode is electrically connected to the first signal routing through a first via, and the second electrode is electrically connected to the second signal routing through a second via; the piezoelectric material unit is respectively connected to the first electrode and the second electrode, so that the piezoelectric material unit is electrically connected to the first signal routing and the second signal routing. 2 . The touch control device according to claim 1 , wherein the touch control device is a touch button. 3 . The touch control device according to claim 1 , wherein the number of the first electrodes is plural and they are arranged in a straight line or array with equal intervals; and the second electrodes are arranged around the first electrodes. 4 . The touch control device according to claim 1 , wherein the wiring layer further comprises a shielding wiring, and the shielding wiring is arranged around the signal wiring. 5. An electronic device, comprising the touch control device according to any one of claims 1 to 4. 6. A touch control method, comprising: receiving a touch pressure applied to the touch device detected by a pressure detection unit; In response to the touch pressure being within the pressure threshold range, controlling the touch detection unit to detect a touch signal applied to the touch device, receiving the touch signal, and generating a touch instruction according to the touch signal; The touch detection unit includes a touch electrode layer, an insulating layer and a routing layer arranged in sequence, and the electrodes in the touch electrode layer are correspondingly connected to the signal routing in the routing layer; the pressure detection unit includes a piezoelectric material layer, and the piezoelectric material units in the piezoelectric material layer are correspondingly contacted and connected to the electrodes in the touch electrode layer; the touch electrode layer includes a first electrode and a second electrode, and the routing layer includes a first signal routing and a second signal routing; the first electrode is electrically connected to the first signal routing through a first via hole, and the second electrode is electrically connected to the second signal routing through a second via hole; the piezoelectric material unit is correspondingly connected to the first electrode and the second electrode respectively, and then electrically connected to the first signal routing and the second signal routing in the routing layer. 7. A method for manufacturing a touch device, comprising: obtaining a substrate base plate; forming a wiring layer on the substrate; forming an insulating layer on the wiring layer; A touch electrode layer is formed on the insulating layer; the electrodes in the touch electrode layer are correspondingly connected to the signal wirings in the wiring layer; A piezoelectric material layer is formed on the touch electrode layer; the piezoelectric material units in the piezoelectric material layer are in contact and connected with the electrodes in the touch electrode layer; the touch electrode layer includes a first electrode and a second electrode, and the routing layer includes a first signal routing and a second signal routing; the first electrode is electrically connected to the first signal routing through a first via hole, and the second electrode is electrically connected to the second signal routing through a second via hole; the piezoelectric material units are respectively connected to the first electrode and the second electrode, and then electrically connected to the first signal routing and the second signal routing in the routing layer.