TWI459263B - Touch device - Google Patents

Description

Touch device

The present invention relates to a touch device, and more particularly to a touch device having a virtual button.

Liquid crystal displays (LCDs) have been widely used in multimedia players, mobile phones, personal digital assistants (PDAs), computer devices, or flat-panel TVs because of their slimness, power saving, and no radiation. And other electronic products. In addition, the function of performing light-sensing or touch-sensitive input operation using a liquid crystal device is also becoming popular, that is, more and more electronic products use a liquid crystal device with an induction mechanism as its input interface. Similarly, a light emitting diode device and an organic light emitting diode device are also used as an input interface for detecting sensing.

In order to increase the user's convenience in operation, the touch sensing device usually needs to set the physical button again. The traditional physical button includes three kinds of switch buttons: mechanical, film or capacitive. However, no matter which physical buttons are used in the electronic device, it is necessary to add a printed circuit board and a flexible cable for the physical button inside the electronic device. In this way, the internal available space of the electronic device is inevitably reduced and the weight of the electronic device is increased.

In order to improve the above shortcomings, some smart phones and tablets are currently available. Electronic products with touch sensing functions, such as tablets, liquid crystal displays, notebook computers, PDAs, information appliances, and car navigation devices, have virtual keys on their display panels instead of traditional physical buttons. Provide users with easier command input. The virtual button, like the touch panel, includes a sensing electrode for generating a touch command according to the user's touch to provide the same effect as the physical button, thereby eliminating the need for the physical button setting. However, since the prior art technology must additionally add virtual buttons for the combination of the driving line and the sensing line, it is bound to increase the difficulty in circuit design and layout, and such an excessively dense wiring may deteriorate the coupling between signals. .

One embodiment of the present invention relates to a touch device including a main touch area, a touch key area, and a circuit board. The main touch area includes a plurality of first electrodes and a plurality of second electrodes respectively having a first end and a second end. The first electrodes are disposed along a first direction, and the second electrodes are staggered with the first electrodes along a second direction, wherein each of the first electrodes includes a plurality of first electrode units and each The second electrode includes a plurality of second electrode units. The touch panel is disposed at the periphery of the main touch area and has at least one touch button unit, including a first electrode and a second electrode. One of the first electrodes is electrically connected to the circuit board via the first trace, and one of the second electrodes is electrically connected to the circuit board via the second trace, and the at least one touch button A non-continuous arrangement is disposed between the first electrode of the unit and the first electrodes of the main touch area.

In the embodiment of the invention, the touch button unit does not have a relationship with the main touch area. The first electrode is disposed, and the touch button unit shares the setting of the adjacent or non-adjacent second electrode. Even if the touch device adds a plurality of touch button units, only one first electrode needs to be added. There is no need to add too many electrodes, thus avoiding the excessively dense arrangement of the traces in the prior art and causing severe signal coupling effects. In addition, the internal circuit of the touch device through the routing design of the present invention does not require complicated design.

The disclosure is specifically described by the following examples, which are intended to be illustrative only, as those skilled in the art can make various changes and modifications without departing from the spirit and scope of the disclosure. The scope of the disclosure is defined by the scope of the appended claims. In the context of the specification and the patent application, the meaning of "a" and "the" includes "the" or "the" In addition, as used in the disclosure, the singular " In addition, the meaning of "in" or "in" can be used in the context of the following claims. The terms used throughout the specification and patent application, unless otherwise specified, generally have the ordinary meaning of each of the terms used in the field, the content disclosed herein, and the particular content. Certain terms used to describe the disclosure are discussed below or elsewhere in this specification to provide additional guidance to practitioners in the description of the disclosure. Examples of any part of the specification, including those discussed here The use of the examples of the words is merely illustrative and is not intended to limit the scope and meaning As such, the disclosure is not limited to the various embodiments set forth in this specification.

In addition, the use of the term "connected" as used herein to mean any direct and indirect electrical connection means "directly connected" or "electrically connected". For example, if a first device is connected to a second device, it means that the first device can be directly connected to the second device or indirectly connected to the second device through other devices or connection means.

It can be understood that the terms "comprising", "including", "having", "containing", "involving", etc., as used herein, are open. (open-end), meaning to include but not limited to. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. Therefore, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention.

In the following, the specific embodiments of the touch device according to the present invention are described in detail with reference to the accompanying drawings, but the embodiments are not intended to limit the scope of the invention. Therefore, if a touch device includes a first electrode and a second electrode, it does not mean that the touch device has only the first electrode and the second electrode, and does not represent that the first electrode and the second electrode are not. Contains other components. In addition, the "route", "first trace", and "second trace" described in the entire specification describe the wiring of the circuit in the circuit, and "the first walk Lines and "second traces" can be interpreted as "first direction traces" and "second direction traces", such as traces along the x-axis direction and traces along the y-axis direction.

Please refer to FIG. 1 . FIG. 1 is a schematic diagram of a touch device 200 according to an embodiment of the present invention. As shown in FIG. 1 , the touch device 200 includes a main touch area 250 , a circuit board 260 , and a touch button area 252 . The touch button area 252 is located outside the main touch area 250, such as below the main touch area 250. The touch button area 252 includes a plurality of touch button units K1, K2, K3. As shown in FIG. 2, the main touch area 250 has a plurality of first electrodes 210a to 210e disposed along the first direction, and a plurality of second electrodes 220a to 220e disposed along the second direction. The touch button area 252 includes a first electrode 210f disposed along the first direction. When the plurality of touch button units K1, K2, and K3 are arranged in the first direction, the first electrode 210f is a traversing touch. The settings of the button units K1, K2, K3. The second electrodes 220a, 220c, 220e corresponding to the positions of the touch button units K1, K2, K3 extend to the touch button units K1, K2, K3, for example, the adjacent ones shown in the second figure. A touch button unit K1, K2, K3 composed of four electrode units similar to one electrode unit 211, 212 and second electrode unit 221, 222. And the touch button area 252 and the main touch area 250 have no first electrode and other second electrodes except the second electrodes 220a, 220c, and 220e. The first electrodes 210a to 210f may be, for example, driving electrodes for providing driving signals, and the second electrodes 220a to 220e may be, for example, sensing electrodes for generating touch sensing signals according to touch. In the main touch region 250, the first electrodes 210a to 210e and the second electrodes 220a to 220e may be in the same plane, but the invention is not limited thereto, and the first electrodes 210a to 210e and the second electrodes 220a to 220e can also be set to be in different planes.

In addition, a variation of the touch-type button area 252 is further provided. The touch-type button area 252 includes at least one touch-type button unit K1, K2, and K3 respectively having a touch unit, and each touch-type button unit includes a relative setting. The first electrode unit 211 and the second electrode unit 221 . The first electrode unit of each touch button unit is electrically connected in a first direction through a wire, and the second electrode unit of each touch button unit is electrically connected to the main touch area 250 through a wire. The position of the touch button unit corresponds to any of the second electrodes 220a to 220e. As such, the touch button area 252 and the main touch area 250 do not have a first electrode and a second electrode, and are connected only by the second trace.

2 is a structural diagram of the main touch region 250 of FIG. 1. In FIG. 2, the first electrodes 210a to 210e and the second electrodes 220a to 220e are disposed to be in the same plane. A bridge 230 and an insulator 240 are disposed at the intersection of the first electrodes 210a to 210e and the second electrodes 220a to 220e, so that the first electrodes 210a to 210e and the second electrodes 220a to 220e can operate normally and Avoid short circuit situations. For example, in the adjacent first electrode units 211 and 212 and the second electrode units 221 and 222, the first electrode units 211 and 212 are connected by a bridge 230, and the second electrode units 221 and 222 are directly connected. The first electrode units 211 and 212 are separated from the second electrode units 221 and 222 by the insulating layer 240. However, the present invention is not limited thereto, and the first electrode units 211 and 212 may be directly connected. The second electrode units 221 and 222 are connected by a bridge 230, and the insulating layer 240 is not limited to a pattern layer, and may be an entire unpatterned insulating layer.

Please refer to FIG. 3 again. FIG. 3 is another structural diagram of the main touch area 250 of FIG. 1. As shown in FIG. 3, the first electrodes 210a to 210e and the second electrodes 220a to 220e are located in different planes. . The first electrodes 210a to 210e are arranged in the first direction array on the first plane P1, and the second electrodes 220a to 220e are arranged in the second direction array on the second plane P2 different from the first plane P1. FIG. 3 is only an example, and does not limit the arrangement of the first plane P1 and the second plane P2 from top to bottom. Further, in the embodiment, the first direction and the second direction may be, for example, an x-axis direction, y. The axial direction is not limited thereto, and the first direction and the second direction are not perpendicular to each other.

In the first embodiment, for convenience of illustration, only the first electrodes 210a to 210f and the second electrodes 220a to 220e are listed, but are not intended to limit the number of the first electrode and the second electrode of the present invention, and the present invention can meet the requirements. The number of the first electrode and the second electrode is increased or decreased for the touch device 200. Similarly, the present invention does not limit the number of touch button units, and the touch device 200 can include at least one touch button unit.

Through the first embodiment, the touch button area 252 and the main touch area 250 do not have the first electrode arrangement, and the touch type button units K1, K2, K3 share the non-adjacent second. The arrangement of the electrodes 220a, 220c, and 220e can reduce the number of the first electrode and the second electrode which are required to be added by the touch type button unit. In this embodiment, only one first electrode 210f is added in more than the case where there is no touch button unit. In addition, if the added touch button unit is disposed in the first direction, and the number of the second electrodes is more than the touch button unit, even more touches are added in the same column. The touch button unit also requires only one first electrode, such as the first electrode 210f, without the need to add more first electrodes.

In addition, in order not to increase the complexity of the circuit design and layout, one end of the second electrodes 220b, 220d in the touch device 200 extends out of the second trace via the opposite side with respect to the touch button area 252 or is not touched. The touch button units K1, K2, K3 are connected to the circuit board 260 in the touch device 200, and the other second electrodes 220a, 220c, 220e are respectively passed through the touch button units K1, K2, K3 and respectively via the second line. Connected to circuit board 260 as shown in Figure 1. One end of the first electrodes 210a-210e of the touch device 200 can also extend out of the first trace (not shown) and not through the touch button units K1, K2, K3 to connect to the circuit in the touch device 200. Board 260. The circuit board 260 can be, for example, a printed circuit board (PCB), a flexible circuit board (FCB).

Please refer to FIG. 4 , which is a schematic diagram of a touch device 400 according to a second embodiment of the present invention. As shown in FIG. 4, the difference between the touch device 400 and the touch device 200 is that, in the touch device 200, the touch button units K1, K2, and K3 share the second electrodes 220a and 220c corresponding to the positions thereof. 220e, in the touch device 400, the touch button units K1, K2, and K3 sequentially share the adjacent second electrodes 220a, 220b, and 220c, respectively, and the second electrodes 220a, 220b, and 220c are It extends to the touch button units K1, K2, K3 in a folded manner. Therefore, for the touch device 200, in order not to increase the complexity of the circuit design and layout, the second trace of the second electrodes 220b, 220d can be made by the main touch area 250 relative to the touch button units K1, K2, K3. The opposite side is pulled out to connect to the circuit board 260. Through the setting of the touch device 400, the traces of the second electrodes 220d and 220e are pulled out from the same side of the touch panel area 252 to the circuit board 260 without interfering with the first The electrode 210f can be pulled out from the main touch area 250 to the same side or opposite side of the touch key area 252 to the circuit board 260, so that the touch device 400 can be further Diversified application design. Similarly, the second embodiment is merely illustrative of the present invention and is not intended to limit the number of first electrode, second electrode or touch button unit of the present invention.

In addition to the above first embodiment and the second embodiment, the touch-type button units K1, K2, K3 share the second adjacent electrodes or the second electrodes 220a to 220e of the second electrodes 220a to 220e that are not adjacent. In the arrangement of the two electrodes, the touch button unit of the present invention can also be configured as a second electrode which is adjacent to the common portion but not adjacent to each other, as shown in FIG. FIG. 5 is a schematic diagram of a touch device 500 according to a third embodiment of the present invention. The difference between the touch device 500 and the touch device 200 or 400 is that the touch button units K1 and K2 are respectively shared by the touch device 500. The second electrodes 220a, 220c, but the touch button unit K3 shares the second electrode 220d, that is, the second electrodes 220a, 220c are respectively connected to the touch button units K1, K2 in a non-bending manner, and The two electrodes 220d are connected to the touch button unit K3 in a bent manner, and are different from the first and fourth figures. In the fifth figure, the touch button area 252 is represented by a processed appearance. Instead of being exposed by bare electrodes. In this way, the second electrode 220b trace can be pulled out to the circuit board 260 by the main touch area 250 opposite to the touch key area 252, and the trace of the second electrode 220e is opposite to the main touch area 250. Touch type The opposite side or the same side of the keypad 252 may extend to the circuit board 260. Similarly, the third embodiment is merely illustrative of the present invention and is not intended to limit the number of first electrode, second electrode or touch button unit of the present invention.

In addition, any change and modification of the first embodiment to the third embodiment of the present invention, either alone or in combination, are covered by the present invention, and the touch device 500 of the present invention can be applied to a smart phone or a tablet computer. Electronic devices such as display devices, notebook computers, PDAs, information appliances, and car navigation devices, or other electronic devices.

In the embodiment of the present invention, the touch button unit and the K1, K2, and K3 and the main touch area 250 do not have a first electrode, and the touch button unit shares a second or adjacent second. The arrangement of the electrodes, for example, the touch button units K1, K2, K3 share the three second electrodes adjacent to or not adjacent to the second electrodes 220a to 220e, even if at least one touch type is added to the touch devices 100, 400, 500 For the button unit, only one first electrode 210f needs to be added, and no excessive electrode needs to be added, thereby avoiding the excessively dense and dense wiring of the prior art and causing serious signal coupling effects. In addition, the internal circuits of the touch devices 200, 400, and 500 of the present invention do not need to be complicated.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

10‧‧‧Main touch area

20‧‧‧Touch type by unit

100, 200, 400, 500‧‧‧ touch devices

210a to 210f‧‧‧first electrode

220a to 220e‧‧‧second electrode

211, 212‧‧‧ first electrode unit

221, 222‧‧‧ second electrode unit

230‧‧‧Bridge

240‧‧‧Insulation

250‧‧‧Main touch area

252‧‧‧Touch button area

260‧‧‧ circuit board

D1 to D8‧‧‧ drive line

S1 to S8‧‧‧ sensing line

K1K2, K3, M1, M2, M3‧‧‧ touch button unit

FIG. 1 is a schematic diagram of a touch device according to an embodiment of the present invention.

Figure 2 is a structural diagram of the main touch area of Figure 1.

Figure 3 is another structural diagram of the main touch area of Figure 1.

4 is a schematic view of a touch device according to a second embodiment of the present invention.

Figure 5 is a schematic view of a touch device according to a third embodiment of the present invention.

210a to 210e‧‧‧first electrode

220a to 220e‧‧‧second electrode

211, 212‧‧‧ first electrode unit

221, 222‧‧‧ second electrode unit

230‧‧‧Bridge

240‧‧‧Insulation

250‧‧‧Main touch area

Claims (6)

A touch device includes: a main touch area, comprising: a plurality of first electrodes, having a first end and a second end disposed along a first direction, each of the first electrodes comprising a plurality of An electrode unit; and a plurality of second electrodes having a first end and a second edge interleaved with the first electrodes in a second direction different from the first direction, each of the second electrodes comprising a second electrode unit; a touch-sensitive button area disposed at the periphery of the main touch area, having at least one touch button unit, the at least one touch button unit comprising a first electrode and a second electrode And a circuit board, wherein one of the first electrodes is electrically connected to the circuit board via a first trace, and one of the second electrodes is electrically connected to the circuit via a second trace a non-continuous arrangement between the first electrode of the at least one touch button unit and the first electrodes of the main touch area; and the second electrodes of the main touch area At least one second electrode corresponding Extending to the second electrode of the at least one touch button unit to be connected to each other, and one of the other ends of the second electrodes not connected to the at least one touch button unit is opposite to the touch via the second routing system Controlled button zone The same side of the main touch area is connected to a circuit board. A touch device includes: a main touch area, comprising: a plurality of first electrodes, having a first end and a second end disposed along a first direction, each of the first electrodes comprising a plurality of An electrode unit; and a plurality of second electrodes having a first end and a second edge interleaved with the first electrodes in a second direction different from the first direction, each of the second electrodes comprising a second electrode unit; a touch-sensitive button area disposed at the periphery of the main touch area, having at least one touch button unit, the at least one touch button unit comprising a first electrode and a second electrode And a circuit board, wherein one of the first electrodes is electrically connected to the circuit board via a first trace, and one of the second electrodes is electrically connected to the circuit via a second trace a non-continuous arrangement between the first electrode of the at least one touch button unit and the first electrodes of the main touch area; and the second electrodes of the main touch area At least one second electrode corresponding Extending to the second electrode of the at least one touch button unit to be connected to each other, and one of the other ends of the second electrodes not connected to the at least one touch button unit is opposite to the touch via the second routing system Controlled button zone The other side of the main touch area is connected to a circuit board. The touch device of claim 1 or 2, wherein the second electrodes corresponding to the main touch area of the at least one touch button unit are adjacent. The touch device of claim 1 or 2, wherein the second electrodes corresponding to the main touch area of the at least one touch button unit are not adjacent. The touch device of claim 1 or 2, wherein the second electrode portions corresponding to the main touch regions of the at least one touch button unit are adjacent, and the portions are not adjacent. A touch device includes: a main touch area, comprising: a plurality of first electrodes, having a first end and a second end disposed along a first direction, each of the first electrodes comprising a plurality of An electrode unit; and a plurality of second electrodes having a first end and a second edge interleaved with the first electrodes in a second direction different from the first direction, each of the second electrodes comprising a second electrode unit; a touch-sensitive button area disposed at the periphery of the main touch area, having at least one touch button unit, the at least one touch button unit comprising a first electrode and a second electrode ;and a circuit board, wherein one of the first electrodes is electrically connected to the circuit board via a first trace, and one of the second electrodes is electrically connected to the circuit board via a second trace; Wherein the first electrode of the at least one touch button unit and the first electrodes of the main touch area are non-contiguous; and at least the second electrodes of the main touch area A second electrode and the second electrode of the at least one touch button unit are connected to each other by the second trace.