CN205827354U - A kind of touch control device and electric terminal - Google Patents

Abstract

The utility model provides a touch control device and an electronic terminal. The touch control device includes a casing, and also includes a cover plate, a touch device, a display device and a pressure sensor for detecting touch pressure; the casing The body includes a bottom, side parts arranged on both sides of the bottom, and a top extending inwardly from the side parts to above the cover plate; the cover plate, touch device and display device are sequentially arranged under the top from top to bottom The pressure sensor is arranged above or below the edge of the cover plate; the inner wall of the side part is provided with a support for supporting the pressure sensor and the cover plate. The touch device provided by the utility model has a pressure detection function and has high stability in structure and performance.

Description

A touch device and electronic terminal

technical field

The utility model relates to the field of touch technology, in particular to a touch device and an electronic terminal.

Background technique

Existing smart watches, smart bracelets, or other similar electronic product terminals are divided into two installation structures according to the installation sequence of the screen and the housing, that is, a front-mounted structure and a reverse-mounted structure. Referring to Fig. 1, it is a partial structural schematic diagram of the formal structure of a smart watch in the prior art, which can form a formal structure through the order of formal installation (the method of installing each component from the bottom of the housing to the top is called formal installation), Wherein, the housing is roughly U-shaped, and the cover is located above the housing. Since the top of the housing is completely open, the module integrated with the cover, touch device and display device can be moved from the top of the housing to the housing. The bottom of the body is pressed from top to bottom. Therefore, the edge of the integrated module has no shielding structure, so the area where the edge of the integrated module will not be lit will form black when the electronic terminal is on. side. For the flip-chip structure, usually the various components (such as the integrated module) are press-fitted from the bottom of the housing to the top of the housing from bottom to top. Since the top of the housing is provided with a shield, the module can be pressed into the top of the housing, and at the same time the top covers the unrealistic area of the edge of the module, so that no black border will be formed when the electronic terminal is lit . In the electronic terminal of the front mounting structure in the prior art, it can be designed by arranging the sensor between the cover plate and the housing, and the sensors are respectively bonded to the plane of the cover plate and the housing. However, current flip-chip electronic terminals such as smart watches do not have a pressure detection function, and the cover plate is prone to collapse and detachment when the external touch pressure deforms downward, which is not conducive to the stability of product structure and performance.

Utility model content

In view of this, the utility model provides a touch device and an electronic terminal, which are suitable for a flip-chip structure, have a pressure detection function, and have good structural stability and performance stability.

In order to solve the above technical problems, the touch device provided by the utility model includes: a housing, and also includes a cover plate, a touch device, a display device and a pressure sensor for detecting touch pressure; the housing includes The bottom, the side parts arranged on both sides of the bottom, and the top extending inwardly from the side parts above the cover plate; the cover plate, touch device and display device are sequentially arranged under the top part from top to bottom; The pressure sensor is arranged above or below the edge of the cover plate; the inner wall of the side part is provided with a support for supporting the pressure sensor and the cover plate.

Preferably, when the pressure sensor is arranged above the edge of the cover plate, the pressure sensor is attached to the top and/or the cover plate; when the pressure sensor is arranged below the edge of the cover plate , the pressure sensor is attached to the support member and/or the cover plate.

Preferably, the pressure sensor includes a first electrode, a second electrode, and a first elastic member between the first electrode and the second electrode that can be deformed according to the touch pressure, and the first electrode and the second electrode form a Deformable capacitance that changes with touch pressure.

Preferably, the pressure sensor is a single-layer electrode. When the pressure sensor is arranged above the edge of the cover plate, the top is a conductive member, and there is an electrode deformable with the touch pressure between the pressure sensor and the top. The second elastic member, the pressure sensor and the top form a deformation capacitance that can change with the touch pressure;

When the pressure sensor is arranged under the edge of the cover plate, the support member is a conductive member, and a second elastic member deformable with the touch pressure is arranged between the pressure sensor and the support member, and the pressure sensor and the support member The support forms a deformation capacitance that can change with touch pressure.

Preferably, a shielding electrode is further included, the shielding electrode is located on the first electrode and/or the second electrode, and the shielding electrode is electrically isolated from the first electrode and the second electrode by an insulating member.

Preferably, a shielding electrode is further included, the shielding electrode is located on the pressure sensor, and the shielding electrode is electrically isolated from the pressure sensor by an insulating member.

Preferably, when the pressure sensor is arranged above the edge of the cover, the support is located below the cover; when the pressure sensor is arranged below the edge of the cover, the support is located below the pressure sensor.

Preferably, the pressure sensor is in a continuous ring shape or includes several sub-sensors, and the several sub-sensors are enclosed in a ring shape.

Preferably, the sub-sensors are square.

Preferably, the support member is in an inverted L shape, and the support member is fixed to the inner wall of the side portion.

The utility model also provides an electronic terminal, which includes the touch device described in any one of the above items.

The touch control device provided by the utility model has a housing including a bottom, side parts arranged on both sides of the bottom, and a top extending inwardly from the side part to above the cover plate, so it can realize a flip-chip structure. At the same time, a pressure sensor is provided above or below the edge of the cover plate, and a support for supporting the pressure sensor and the cover plate is provided on the inner wall of the side of the housing, and then it has the function of pressure detection. , which can prevent the cover plate and the pressure sensor from collapsing and detaching, thereby improving the structural stability and performance stability of the touch device.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments described in the utility model, and those skilled in the art can also obtain other drawings according to these drawings.

FIG. 1 is a schematic structural diagram of a touch device with a formal structure in the prior art;

Fig. 2 is a schematic structural diagram of a touch device in a preferred embodiment provided by the present invention;

Fig. 3 is a schematic structural view of an embodiment of the pressure sensor in Fig. 2;

Fig. 4 is a partial schematic diagram of an embodiment in Fig. 2;

Fig. 5 is a schematic structural diagram of a touch device in another preferred embodiment provided by the present invention;

Fig. 6 is a partial schematic diagram of an embodiment in Fig. 5;

Fig. 7 is a partial structural schematic diagram of a pressure sensor and a shielding electrode in an embodiment;

Fig. 8 is a partial structural schematic diagram of a pressure sensor and a shielding electrode in an embodiment;

Fig. 9 is a schematic structural diagram of a pressure sensor in an embodiment.

detailed description

In order to enable those skilled in the art to better understand the technical solution in the utility model, the technical solution in the utility model embodiment will be clearly and completely described below in conjunction with the accompanying drawings in the utility model embodiment. Obviously, the The described embodiments are only some of the embodiments of the present utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art shall belong to the protection scope of the present utility model.

Below in conjunction with the accompanying drawings of the utility model further illustrate the specific implementation of the utility model.

Referring to FIG. 2 , the present invention provides a touch control device, which includes a housing 10 , a cover plate 20 , a touch device 30 , a display device 40 and a pressure sensor 50 all located inside the housing 10 ; the housing 10 includes a bottom 11 , the side parts 12 arranged on both sides of the bottom 11, and the top 13 extending inwardly from the side parts 12 to the top of the cover plate 20, wherein the cover plate 20, the touch device 30 and the display device 40 are sequentially arranged on the top of the cover plate 20. Below the top 13; therefore, the housing 10 is enclosed by the bottom 11, the side 12 and the top 13 to form an accommodating space, and then it can accommodate the cover 20, the touch device 30, the display device 40, and the pressure sensor 50 . Therefore, it can realize the flip-chip structure through the flip-chip sequence, and the cover, the touch device, and the non-display area on the edge of the display device can be covered by the top, thereby preventing the electronic terminal from forming black borders when it is lit. Wherein, the top of the housing can be formed as an annular top.

Meanwhile, the pressure sensor 50 is disposed above or below the edge of the cover plate 20 ; the inner wall of the side portion 12 is provided with a support member 60 for supporting the pressure sensor 50 and the cover plate 20 . That is, the pressure sensor 50 forms an annular (or approximately annular) structure above or below the edge of the cover plate 20 . The supporting member 60 is located on the inner wall of the side portion 12 of the casing 10 and can support the pressure sensor 50 and the cover plate 20 . Therefore, when the user operates on the cover 20, the pressure sensor 50 can identify the user's touch pressure. , which can prevent the cover plate 20 and the pressure sensor 50 from collapsing or detaching, thereby improving the structural stability of the touch device and the stability of product performance.

The pressure sensor 50 provided by the present invention can be located above or below the edge of the cover plate 20 , wherein the pressure sensor 50 can realize pressure detection through self-capacity or mutual capacity.

The concrete operating principle of the present utility model is described as follows in conjunction with preferred embodiment:

Embodiment 1: The pressure sensor 50 is disposed above the edge of the cover plate 20 .

2-4, the pressure sensor 50 includes a first electrode 51, a second electrode 53 and a first elastic member 52 between the first electrode 51 and the second electrode 53 that can deform with the touch pressure. The first electrode 51 and the second electrode 53 form a deformation capacitance that can change with the touch pressure. The deformation capacitance formed by the first electrode 51 and the second electrode 53 is electrically connected to the detection chip, and the detection chip detects the touch pressure by detecting the change of the capacitance value of the deformation capacitance before and after the touch. Wherein, the detection chip is not limited to a touch chip or other components with signal processing functions. Preferably, a shielding electrode 55 is provided on the pressure sensor 50 to shield the interference of external signals, thereby improving the accuracy of pressure detection. Specifically, a shielding electrode 55 may be provided on the first electrode 51 or the second electrode 53 or on both the first electrode 51 and the second electrode 53 to shield and reduce external interference. The shielding electrode 55 is electrically isolated from the first electrode 51 and the second electrode 53 on the pressure sensor 50 through the insulating member 56, that is, on the first electrode 51, or the second electrode 53, or on the first electrode 51 and the second electrode 53 at the same time After the insulator 56 is provided, the shield electrode 55 is provided. The support member 60 is located under the cover plate 20, so when the user touches and presses the touch device, when the cover plate 20 and the pressure sensor 50 are deformed downward, the support member 60 can support the cover plate 20 and the pressure sensor 50 , thereby preventing the cover plate 20 and the pressure sensor 50 from collapsing or detaching. The support member 60 can be arranged on the inner wall of the side portion 12 in various ways, for example, the support member 60 is fixed on or detachably arranged on the inner wall of the side portion 12, for example, fixed to the inner wall of the side portion 12 by screws to improve the support The stability of the component 60 is improved, thereby improving the structure and performance stability of the touch device. The support member 60 can be in various shapes. Preferably, the support member 60 is in an inverted L shape, which facilitates fixing the support member 60 to the side portion 12 of the housing 10, and at the same time, the horizontal portion of the support member 60 can better support it. The upper part, for example, better supports the cover plate 20 above it.

In a preferred embodiment, the pressure sensor can also be a single-layer electrode structure (the single-layer electrode can be a whole electrode, or can be a combination of multiple sub-electrodes to form a pressure sensor with a single-layer electrode, the top of the housing 10 13 is a conductive member, and a second elastic member 54 that can deform with the touch pressure is arranged between the pressure sensor 50 and the top 13, and the pressure sensor 50 and the top 13 form a deformation capacitance that can change with the touch pressure; that is At this time, the pressure sensor 50 is a conductive member, which forms a deformation capacitor with the top 13 of the housing 10. The deformation capacitor is electrically connected to the detection chip, and the detection chip detects the touch pressure by detecting the change of the capacitance value of the deformation capacitor before and after the touch. Specifically, when the user touches the cover plate 20, the pressure sensor 50 arranged above the cover plate 20 is displaced and deformed together with the second elastic member 54, so that the distance between the pressure sensor 50 and the top 13 increases, and the deformation capacitance The capacitance value changes, and the user's touch pressure can be detected and identified through the change of the capacitance value.

Preferably, when the pressure sensor 50 is located above the edge of the cover plate 20, the pressure sensor 50 is attached to the top 13 and/or the cover plate 20, the bottom 11 of the pressure sensor 50 is connected to the cover plate 20, and the pressure sensor 50 may be displaced with the displacement of the cover plate 20, thereby causing the capacitance value of the deformation capacitor to change. The structure is simple, the installation is stable, and the cost is low. It should be noted that the pressure sensor 50 can be directly attached to the cover 20 or can be connected in other ways so that the pressure sensor 50 can be displaced with the displacement of the cover 20 .

Embodiment 2: The pressure sensor 50 is disposed under the edge of the cover plate 20 .

Referring to FIG. 5 and FIG. 9, the pressure sensor 50 includes a first electrode 51, a second electrode 53 and a first elastic member 52 between the first electrode 51 and the second electrode 53 that can deform with the touch pressure. The first electrode 51 and the second electrode 53 form a deformation capacitance that can change with the touch pressure. The deformation capacitance formed by the first electrode 51 and the second electrode 53 is electrically connected to the detection chip, and the detection chip detects the touch pressure by detecting the change of the capacitance value of the deformation capacitance before and after the touch. Preferably, a shielding electrode 55 is provided on the pressure sensor 50 to shield the interference of external signals, thereby improving the accuracy of pressure detection. Specifically, a shielding electrode 55 may be provided on the first electrode 51 or the second electrode 53 or on both the first electrode 51 and the second electrode 53 to shield and reduce external interference. The shielding electrode 55 is electrically isolated from the first electrode 51 and the second electrode 53 on the pressure sensor 50 through the insulating member 56, that is, on the first electrode 51, or the second electrode 53, or on the first electrode 51 and the second electrode 53 at the same time After the insulator 56 is provided, the shield electrode 55 is provided.

The support 60 is located below the pressure sensor 50 (then the support 60 must be located below the cover 20, that is, no matter where the pressure sensor is placed, the support is located below the cover), so when the user touches and presses When the touch device is used, when the cover 20 and the pressure sensor 50 are deformed downward, the support member 60 can support the cover 20 and the pressure sensor 50 , thereby preventing the cover 20 and the pressure sensor 50 from collapsing or detaching. Similarly, the support member 60 can be arranged on the inner wall of the side portion 12 in various ways, for example, the support member 60 can be fixed or detachably arranged on the inner wall of the side portion 12, for example, fixed to the inner wall of the side portion 12 by screws, In order to improve the stability of the support member 60 , and further improve the structure, that is, the performance stability of the touch device. The support member 60 can be in various shapes. Preferably, the support member 60 is in an inverted L shape, which facilitates fixing the support member 60 to the side portion 12 of the housing 10, and at the same time, the horizontal portion of the support member 60 can better support it. The upper parts, for example, better support the pressure sensor 50 and the cover plate 20 above it.

In a preferred embodiment, the pressure sensor can also be a single electrode structure, the support member 60 is a conductive member, and a second elastic force deformable with the touch pressure is provided between the pressure sensor 50 and the support member 60. The pressure sensor 50 and the support 60 form a deformation capacitance that can change with the touch pressure. That is, the pressure sensor 50 is a conductive element at this time, and forms a deformation capacitance with the supporting element 60 to detect pressure. Specifically, when the user touches the cover plate 20, the pressure sensor 50 disposed under the cover plate 20 is displaced and deformed together with the second elastic member 54, so that the distance between the pressure sensor 50 and the support member 60 decreases, and the capacitance of the deformation capacitor The value changes, and the user's touch pressure can be detected and identified through the change of the capacitance value.

Preferably, when the pressure sensor 50 is located below the edge of the cover plate 20 , the pressure sensor 50 is attached to the support member 60 and/or the cover plate 20 . The top 13 of the pressure sensor 50 is connected to the cover plate 20 , and the pressure sensor 50 can be displaced with the displacement of the cover plate 20 , thereby changing the capacitance value of the deformation capacitor. The structure is simple, the installation is stable, and the cost is low. It should be noted that the pressure sensor 50 can be directly attached to the cover plate 20 or can be connected in other ways so that the pressure sensor 50 can be displaced with the displacement of the cover plate 20 (for example, the pressure sensor 50 can be pasted by adhesive glue. onto the cover plate 20). Preferably, the top and side of the housing in the present invention are integrally formed, and the bottom of the housing is connected to the integrally formed structure, so as to facilitate the installation of the touch device and ensure the stability of the touch device.

In summary, the pressure sensor 50 can be a single electrode to form a deformation capacitance with the top 13 of the housing 10 or with the support member 60, or the pressure sensor 50 can be an elastic member that includes two electrodes and is located between the two electrodes. constitute. At the same time, the pressure sensor 50 in the touch device with pressure detection and capable of flipping and avoiding collapse provided by the utility model is not limited to the above-mentioned structure. Recognizes pressure, which can also be a piezoelectric sensor or a pressure sensitive sensor.

The pressure sensor 50 may be in various shapes and structures. Preferably, the pressure sensor 50 is in a continuous ring shape or includes several sub-sensors 57, and the several sub-sensors 57 are enclosed in a ring shape. While the pressure can be effectively detected, the structure is simple and the cost is low. The several sub-sensors 57 can be in various shapes, and more preferably, the sub-sensors 57 are square, and the pressure detected by them is more accurate. Preferably, the support 60 is in an inverted L shape, the longitudinal surface of the support 60 can be better fixed to the inner wall of the side part 12 , and the horizontal part of the support 60 can better form a deformation capacitance with the pressure sensor 50 .

The above-mentioned first elastic member 52 and second elastic member 54 can be air or flexible fillers. Adhesive parts with stickiness on both sides, for example, the first elastic part 52 and the second elastic part 54 are silica gel, rubber ring, adhesive glue, foam and so on.

In the above embodiment, when the pressure sensor is a layer of electrodes to realize pressure detection, it can save cost; at the same time, when the first elastic member and the second elastic member are adhesive glue, it can form two sealing layers, which can improve Waterproof performance of electronic products.

The above description of the upper and lower positions is based on the position of the touch control product that the user usually sees. For example, in a smart watch, what the user usually sees is the cover plate, which is equivalent to the front view of the watch. Above and below are relative positions.

The display devices in the present invention can be various devices with display functions, for example, not limited to LCD display devices, or LED display devices (including OLED display devices).

To sum up, the touch device provided by the utility model is suitable for flip-chip structure, which has the function of pressure detection, and can avoid collapse and detachment, thereby improving the stability of the structure and performance of the product. The utility model also provides an electronic terminal, which includes the touch device with any structure above. For example, the electronic terminal may be a smart bracelet, a smart watch, or a smart phone, and the above casing is the middle frame of the phone or the case of the watch. If the electronic terminal is in a formal structure, there will be a black border around its display screen (a black area that cannot be displayed). There are areas where black cannot be displayed. The electronic terminal with flip-chip structure provided by the utility model can cover the black border through the top of the housing, so that the user cannot see the black border when the screen of the electronic product is on, thereby improving the aesthetics and fashion of the product sex.

While preferred embodiments of the present invention have been described, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, the appended claims are intended to be interpreted to cover the preferred embodiment and all changes and modifications which fall within the scope of the present invention. Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. In this way, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and equivalent technologies thereof, the utility model is also intended to include these modifications and variations.

Claims (11)

1. a touch control device, including housing, it is characterised in that also include being respectively positioned on the cover plate of enclosure interior, touch device, showing Show device and for detecting the pressure transducer of touch pressure；

Described housing includes bottom, is arranged at the sidepiece of two bottom sides and extends inwardly to the top above described cover plate from sidepiece Portion；

Described cover plate, touch device and display device are set in turn in below described top from top to bottom；

Described pressure transducer is arranged at above or below the edge of described cover plate；

The inwall of described sidepiece is provided with the support member for supporting described pressure transducer and cover plate.

Touch control device the most according to claim 1, it is characterised in that when described pressure transducer is arranged at described cover plate During the top at edge, described pressure transducer fits on described top and/or described cover plate；When described pressure transducer is arranged When the lower section at the edge of described cover plate, described pressure transducer fits on described support member and/or described cover plate.

Touch control device the most according to claim 1 and 2, it is characterised in that described pressure transducer include the first electrode, Two electrodes and between described first electrode and described second electrode can be described with the first elastic component of touch pressure deformation First electrode and the second electrode form the deformation electric capacity that can change with touch pressure.

Touch control device the most according to claim 1 and 2, it is characterised in that described pressure transducer is single-layer electrodes, works as institute When stating the top at the edge that pressure transducer is arranged at described cover plate, described top is electric-conductor, described pressure transducer and institute Stating that be provided with between top can be with the second elastic component of touch pressure deformation, described pressure transducer and described top are formed can be with The deformation electric capacity that touch pressure changes；

When the lower section at the edge that described pressure transducer is arranged at described cover plate, described support member is electric-conductor, described pressure Being provided with between sensor and described support member can be with the second elastic component of touch pressure deformation, and described pressure transducer is with described Support member forms the deformation electric capacity that can change with touch pressure.

Touch control device the most according to claim 3, it is characterised in that also include being positioned at described first electrode and/or second Electrically insulated by insulating part between bucking electrode on electrode, described bucking electrode and the first electrode and the second electrode.

Touch control device the most according to claim 4, it is characterised in that also include that bucking electrode, described bucking electrode are positioned at On pressure transducer, electrically insulated by insulating part between described bucking electrode and described pressure transducer.

Touch control device the most according to claim 1, it is characterised in that when described pressure transducer is arranged at described cover plate During the top at edge, described support member is positioned at below described cover plate；Under pressure transducer is arranged at the edge of described cover plate Fang Shi, described support member is positioned at the lower section of described pressure transducer.

8. according to the touch control device described in claim 1 or 7, it is characterised in that described pressure transducer be continuous print ring-type or Including some sub-sensors, described some sub-sensors enclose in the form of a ring.

Touch control device the most according to claim 8, it is characterised in that described sub-sensor is square.

Touch control device the most according to claim 8, it is characterised in that described support member is inverted L shape, described support member is solid Inwall due to described sidepiece.

11. 1 kinds of electric terminals, it is characterised in that include the touch control device as described in any one of claim 1-10.