TWI544384B - Touch device - Google Patents

Description

Touch device

The present invention relates to a touch device and refers to a touch device used as an input unit in an electronic device.

With the advancement of electronic products, many functions that are more user-friendly are also produced, and a proximity sensing device is one of them. The proximity sensing device is disposed in the touch device for sensing whether the object is in proximity to the touch device, and the proximity sensing device transmits the proximity sensing signal of the object to the control unit, and then the control unit determines according to the proximity sensor signal. Corresponding instructions that need to be made, such as switching electronic components, executing specific instructions, and so on. Taking a mobile phone using a touch panel as an example, in order to prevent a user from accidentally giving a command when a user touches a panel when receiving a call, the mobile phone is provided with a proximity sensor device at an appropriate position to detect If the face is close or not, if the face is close, the control unit receives the proximity sensor and closes the touch panel to avoid the face being touched.

The proximity sensing device of the prior art is mainly optical, and the optical detector is disposed outside the visible area of the electronic device to detect the proximity of the object, and is disposed outside the visible area because the sensing area is provided with an induction. Layer for touch operation. However, setting an optical detector increases the cost and increases the overall cost of the electronic device. Another prior art method uses a capacitive proximity sensor device in which a proximity sensing electrode is disposed on the capacitive touch panel instead of the optical detector, and the touch panel is plated on the substrate (film or glass). Glass)). When the capacitive proximity sensing electrode is disposed, the capacitive proximity sensing electrode and the sensing layer are integrated on the substrate, so that the substrate is provided. The range must be extended beyond the visible area, which is bound to increase the size of the substrate, which will undoubtedly increase the cost. At this time, if the design is changed and the optical detector is to be used, the position of the optical detector and the proximity sensing electrode are set. The position overlaps, and the proximity sensing electrode must be removed. However, whether the substrate is selected as a film or glass, once the sensing layer and the proximity sensing electrode are plated, the proximity sensing electrode cannot be separately removed, and only the entire substrate can be replaced. This will cost more.

In view of this, the present invention is directed to improving the arrangement of the proximity sensing electrode unit in order to reduce cost loss.

In order to achieve the above object, the technical means adopted by the present invention is to design a touch device comprising: a substrate having a visible area; and a sensing layer corresponding to the first side of the substrate a carrier board disposed on the first side of the substrate and located outside the visible area, the carrier board is provided with a proximity sensing electrode unit and a touch integrated circuit component, and the sensing layer is connected to the sensing layer The touch integrated circuit component is electrically connected to the touch integrated circuit component, wherein the touch integrated circuit component is coupled to the proximity sensing signal by the proximity sensing electrode unit. To determine whether an object is close to the touch device.

Furthermore, the present invention further provides a touch device comprising: a substrate comprising a visible area and a non-visible area; and a sensing layer comprising a plurality of sensing electrodes under the visible area for sensing the object a touch in the visible area; and a carrier plate located below the non-visible area, including a touch integrated circuit component electrically connected to the plurality of sensing electrodes via a plurality of wires of the carrier, the carrier comprising a proximity sensor The electrode unit electrically connects the touch And controlling the integrated circuit component, the touch integrated circuit component receives a proximity sensing signal generated by the proximity sensing electrode unit to determine whether an object is close to the touch device.

The invention has the advantages that the proximity sensing electrode unit is disposed on the carrier board, so the arrangement of the proximity sensing electrode unit does not affect the setting of the sensing layer, and therefore, the range of the sensing layer does not need to extend beyond the visible area, and the setting can be reduced. The cost of the sensing layer is further reduced. Since the proximity sensing electrode unit and the sensing layer are separately disposed, when the setting of the proximity sensing electrode unit is to be changed, only the carrier board needs to be replaced, and the sensing layer is not required to be reset, thereby saving the process. And the waste of materials.

10, 10A, 10B‧‧‧ substrate

11‧‧‧visible area

12‧‧‧Invisible area

20, 20A, 20B‧‧‧ sensing layer

21‧‧‧Induction line

200A‧‧‧ film

30‧‧‧ Carrier Board

31, 31A‧‧‧ proximity sensing electrode unit

311‧‧‧ drive electrode

312‧‧‧ receiving electrode

32, 32A‧‧‧ touch integrated circuit components

321‧‧‧ Scanning circuit

3211‧‧‧Drive circuit

3212‧‧‧ receiving circuit

3211A‧‧‧ self-capacitor scanning circuit

3212A‧‧‧ mutual capacitance scanning circuit

322, 322A‧‧‧ microprocessor

33A‧‧‧First switch

34A‧‧‧Second switch

Figure 1 is a schematic plan view of the present invention.

2 is a block diagram showing the circuit of some components of the present invention.

Figure 3 is a side cross-sectional view of one embodiment of the present invention.

Figure 4 is a side cross-sectional view showing another embodiment of the present invention.

Figure 5 is a block diagram showing another embodiment of a part of the components of the present invention.

The technical means adopted by the present invention for achieving the intended purpose of the invention are further explained below in conjunction with the drawings and the embodiments of the present invention.

Referring to FIG. 1 , the touch device of the present invention comprises a substrate 10 , a sensing layer 20 , and a carrier 30 .

The substrate 10 has a visible area 11 and a non-visible area 12. The visible area 11 is provided for a display unit, and the user can see the picture displayed by the display unit through the visible area 11. The non-visible area 12 is disposed outside the visible area 11. In an embodiment, the non-visible area 12 is disposed around the periphery of the visible area 11. The substrate 10 can be a glass substrate.

As shown in FIG. 1 and FIG. 2 , the sensing layer 20 is disposed on the first side of the substrate 10 and corresponds to the visible area 11 , and the sensing layer 20 is configured to sense the touch of the object in the visible area 11 . Evently, the sensing layer 20 includes a plurality of criss-crossing sensing lines 21, wherein the sensing lines 21 can be formed by a plurality of sensing electrodes. In one embodiment, the sensing line 21 includes a plurality of driving sensing lines TX1~TXn and a plurality of receiving sensing lines RX1 R RXm, and the driving sensing lines TX1~TXn are arranged along the first axis and arranged in parallel with each other. The receiving sensing lines RX1 R RXm are arranged in parallel along the second axis and arranged in parallel with each other. As shown in FIG. 3, in an embodiment, the sensing layer 20A is formed on the surface of a film 200A. The film 200A is attached to the first side of the substrate 10A, and the sensing layer 20A is in contact with the substrate 10A. The first side; as shown in FIG. 3, in another embodiment, the sensing layer 20B can be directly formed on the first side of the substrate 10B.

Referring to FIGS. 1 to 3, the carrier 30 is disposed on the first side of the substrate 10 and is disposed in the range of the non-visible area 12. The carrier 30 can be a flexible circuit board. The carrier board 30 is provided with a proximity sensing electrode unit 31 and a touch integrated circuit component 32. The touch integrated circuit component 32 is electrically connected to the proximity sensing electrode unit 31 to drive the proximity sensing electrode unit 31. And receiving the proximity sensing signal generated by the proximity sensing electrode unit 31 to determine whether an object is close to the touch device, and the touch integrated circuit component 32 is electrically connected to the sensing layer 20 to drive the sensing layer 20 The plurality of sensing lines TX1~TXn are driven, and the sensing signals generated by the sensing lines RX1~RXm of the sensing layer 20 are received to determine the touch event on the visible area 11.

Referring to FIG. 2, in an embodiment, the touch integrated circuit component 32 includes a scanning circuit 321 and a microprocessor 322. The scanning circuit 321 and the sensing layer 20 drive the sensing lines TX1~TXn. And receiving the sensing lines RX1 R RXm to form an electrical connection, wherein the scanning circuit 321 includes a driving circuit 3211 and a receiving circuit 3212, wherein the driving circuit 3211 is configured to drive the driving sensing line TX1~TXn, and receiving the sensing signals of the receiving sensing lines RX1 R RXm via the receiving circuit 3212. The microprocessor 322 is electrically connected to the scanning circuit 321 to determine a touch event on the visible area 11 through the sensing signal. The proximity sensing electrode unit 31 includes a driving electrode 311 and a receiving electrode 312. The scanning The circuit 321 is electrically connected to the proximity sensing electrode unit 31. The microprocessor 322 can determine whether an object is close to the touch device through the received proximity sensing signal. In an embodiment, the driving circuit 3211 is The driving electrode 311 is electrically connected to drive the proximity sensing electrode unit 31, and the receiving circuit 3212 is electrically connected to the receiving electrode 312 to receive the proximity sensing signal. The scanning circuit 321 drives the proximity sensing electrode unit 31 located in the non-visible area 12 and receives the capacitive sensing signal to further determine whether an object is close to the touch device by the change of the capacitive sensing signal.

Referring to FIG. 5, in another embodiment, the scanning circuit of the touch integrated circuit component 32A includes a self-capacitance scanning circuit 3211A and a mutual capacitance scanning circuit 3212A, and the self-capacitance scanning circuit 3211A and the mutual capacitance. The scanning circuit 3212A is electrically connected to the microprocessor 322A, and the proximity sensing electrode unit 31A is selectively electrically connected to the self-capacitance scanning circuit 3211A or the mutual capacitance scanning circuit 3212A through a first switch 33A, and the sensing is performed. The plurality of driving sensing lines TX1~TXn and the receiving sensing lines RX1~RXm of the layer 20 are selectively electrically connected to the self-capacitance scanning circuit 3211A or the mutual capacitance scanning circuit 3212A through a second switch 34A. That is, the proximity sensing electrode unit 31A can transmit self-capacitive sensing or mutual capacitive sensing, and the sensing line of the sensing layer 20 can also be self-capacitive sensing or mutual capacitive sensing.

In the implementation of the present invention, since the proximity sensing electrode unit 31 is disposed on the carrier 30, the original sensing layer 20 does not need to extend to the non-visible area 11, and the cost of the sensing layer 20 can be saved, and even if it is to be changed When the proximity sensing electrode unit 31 is not designed, the sensing layer 20 does not need to be changed, and only the different carrier 30 needs to be replaced, and the process variation is relatively reduced to simplify the process and reduce the cost.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the present invention. The present invention has been disclosed by the embodiments, but is not intended to limit the invention, and any one of ordinary skill in the art, In the scope of the technical solutions of the present invention, equivalent modifications may be made to the equivalents of the embodiments of the present invention without departing from the technical scope of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments are still within the scope of the technical solution of the present invention.

10 substrate 11 visible area 12 non-visible area 20 sensing layer 30 carrier board 31 proximity sensing electrode unit 32 touch integrated circuit component

Claims (11)

A touch device includes: a substrate having a visible area; a sensing layer disposed on a first side of the substrate; and a carrier disposed on the first side of the substrate In addition to the visible area, the carrier is provided with a proximity sensing electrode unit and a touch integrated circuit component, and the sensing layer is electrically connected to the touch integrated circuit component via the carrier, the proximity sensing electrode unit and The touch integrated circuit component is electrically connected to the touch integrated circuit component by a proximity sensing signal generated by the proximity sensing electrode unit to determine whether an object is adjacent to the touch device. The touch device of claim 1, wherein the sensing layer is integrally formed on the first side of the substrate. The touch device of claim 1, wherein the sensing layer is formed on a film, and the film is attached to the first side of the substrate. The touch device of any one of claims 1 to 3, wherein the sensing layer comprises a plurality of criss-crossing sensing lines, the touch integrated circuit component comprises a scanning circuit and a microprocessor, the plurality of The sensing line is electrically connected to the scanning circuit, the proximity sensing electrode unit is electrically connected to the scanning circuit, and the microprocessor is electrically connected to the scanning circuit, and the microprocessor determines whether an object is close by the proximity sensing signal. The touch device. The touch device of claim 4, wherein the sensing line of the sensing layer comprises a plurality of driving sensing lines and a plurality of receiving sensing lines, the driving sensing lines are arranged in parallel along a first axis, and the receiving sensing lines are The scanning circuit includes a driving circuit and a receiving circuit. The driving sensing line is electrically connected to the driving circuit, and the receiving sensing line is electrically connected to the receiving circuit. The proximity sensing electrode unit includes There is a driving electrode and a receiving electrode. The driving electrode of the proximity sensing electrode unit is electrically connected to the driving circuit, and the receiving electrode of the proximity sensing electrode unit is electrically connected to the receiving circuit. The touch device of claim 4, wherein the scanning circuit comprises a self-capacitance scanning circuit and a mutual capacitance scanning circuit, wherein the microprocessor is electrically connected to the self-capacitance scanning circuit and the mutual capacitance scanning circuit, respectively. The proximity sensing electrode unit is electrically connected to the self-capacitance scanning circuit or the mutual capacitance scanning circuit through a first switch, and the sensing line of the sensing layer is selectively coupled to the self-capacitance scanning circuit or the mutual capacitance through a second switch. The scanning circuit forms an electrical connection. The touch device of any one of claims 1 to 3, wherein the carrier is a flexible circuit board. The touch device of any one of claims 1 to 3, wherein the substrate is a glass substrate. A touch device includes: a substrate including a visible area and a non-visible area; a sensing layer including a plurality of sensing electrodes under the visible area for sensing a touch of the object in the visible area; and a carrier board is disposed under the non-visible area, and includes a touch integrated circuit component electrically connected to the plurality of sensing electrodes via a plurality of wires of the carrier board, wherein the carrier board includes a proximity sensing electrode unit electrically connecting the touch product The body circuit component receives the proximity sensor signal generated by the proximity sensor electrode unit to determine whether an object is close to the touch device. The touch device of claim 9, wherein the sensing layer is formed on a film that is attached to a lower surface of the substrate. The touch device of claim 9, wherein the substrate is a glass substrate, and the sensing layer is integrally formed on a lower surface of the substrate.