CN213243972U - Terminal equipment and pressure sensing module used for same - Google Patents

Abstract

The utility model provides a terminal equipment, include: the pressure sensing module is positioned below a pressing operation part of the terminal equipment, and the pressing operation part is used for transmitting pressing pressure to the pressure sensing module; the pressure sensing module comprises: the conductive ink is attached to the surface of the FPC base material. The conductive ink is printed on the FPC substrate, so that the thickness of the pressure-sensitive module can be greatly compressed, the purpose that the pressure-sensitive module can save space when performing various screen pressure senses or button pressure senses is achieved, the situation that the thickness of a middle frame of terminal equipment needs to be reduced in the design and installation process of the traditional pressure-sensitive module due to the large size is reduced, and the stability and firmness of the terminal equipment are greatly improved; because the FPC substrate is set to the flexible soft substrate, therefore, the pressure-sensitive module can realize that the flexible bending is in any state, thereby being beneficial to the pressure-sensitive use on the curved screen.

Description

Terminal equipment and pressure sensing module used for same

Technical Field

The utility model relates to a pressure module technical field, in particular to terminal equipment and be used for this terminal equipment's pressure module.

Background

In order to improve the operability, the waterproofness and the high-tech feeling of the mobile phone, the pressure sensing can be gradually applied to mobile phone items, a UI designed for the mobile phone which is applied to the pressure sensing technology at present is relatively simple, the pressure sensing only has two key functions, the pressure sensing function is realized only in a small part of areas, and a specific single click effect is realized in a special environment.

SUMMERY OF THE UTILITY MODEL

The utility model provides a terminal device and a pressure sensing module used for the terminal device, which are used for realizing large-area pressure sensing, and the terminal device can realize the functions of pressing keys such as UI interaction of power supply, volume and other specific scenes through pressure sensing without opening holes on the side edge; and the front side of the terminal equipment realizes more app pressure-sensitive interaction functions.

The utility model provides a terminal equipment, include: the pressure sensing module is positioned below a pressing operation part of the terminal equipment, and the pressing operation part is used for transmitting pressing pressure to the pressure sensing module; the pressure sensing module comprises: the conductive ink is attached to the surface of the FPC substrate; the conductive ink is attached to the surface of the FPC substrate, a circuit is arranged on the conductive ink, and the conductive ink and the circuit are both attached with insulating ink.

Optionally, the pressing operation portion is an area for conducting finger pressure, the pressure sensing module is located between the terminal device and the pressing operation portion, and the pressing operation portion is a protection layer; the area for conducting the finger pressure comprises any position which is not limited to be arranged below the screen, on the surface of the screen, inside the frame or in the back plate of the terminal equipment.

Optionally, the pressure-sensitive module is arranged in a middle frame of the terminal device and is located below a screen of the terminal device.

Optionally, the pressure-sensitive module is located below the screen and above the mounting layer, the area of the pressure-sensitive module is smaller than or equal to the area of the screen, and when the area of the pressure-sensitive module is smaller than the area of the screen module, a cavity formed between the screen and the mounting layer is filled with an elastic substance.

Optionally, the surface of the middle frame is provided with a mounting area, the mounting area is used for mounting the pressure-sensitive module, and the plane of the mounting area is lower than the plane of the middle frame.

Optionally, the pressure-sensitive module is a transparent module, and the pressure-sensitive module is arranged in the interlayer of the screen.

Optionally, the pressure-sensitive module is arranged on the side of the middle frame, the terminal device comprises the middle frame and the side of the middle frame, an installation area is arranged between the middle frame and the side of the middle frame, and the installation area is used for installing the pressure-sensitive module.

Optionally, the mounting region is a groove-shaped structure, and the width of the groove-shaped structure is less than or equal to 0.5 mm.

Optionally, the pressure-sensitive module is attached to the curved surface of the curved screen or the bendable region of the screen.

Optionally, the thickness of the pressure-sensitive module is less than or equal to 0.15 mm.

Optionally, one surface of the conductive ink, which is far away from the FPC substrate, is a receiving pressing surface, and the pressing surface is used for converting a generated pressure value into an electrical signal.

Optionally, the pressure sensor further comprises a wheatstone bridge for realizing deformation and outputting an effective pressure signal, and an input end of the wheatstone bridge is connected with the electric signal generated by the pressing surface.

The utility model also provides a pressure module is applied to mobile terminal, mobile terminal does terminal equipment.

The utility model has the advantages as follows:

printing a layer of conductive ink on an FPC (flexible printed circuit) base material, coating insulating ink on the surfaces of the conductive ink except the surface connected with the FPC base material, taking the surface with the insulating ink as a pressing surface, and connecting the pressing operation part of a terminal device or placing the pressing operation part of the terminal device; therefore, the pressure-sensitive module formed by the insulating ink, the conductive ink and the FPC base material together deforms according to the pressure generated by the pressing operation part or the pressing operation part, and further changes of resistance are generated, so that the deformation information of the pressure-sensitive is converted into an electric signal.

Compared with the existing ceramic substrate, the method has the advantages that the traditional ceramic hard substrate is changed into the FPC soft substrate, so that the purpose of cambered surface attachment can be realized; simultaneously, the thickness of FPC soft substrate is less than or equal to 0.1mm, consequently can realize the large tracts of land pressure sense under the screen while, can also reduce its whole thickness of pressure sense module.

Furthermore, as the conductive ink is printed on the FPC substrate, the thickness of the pressure-sensitive module can be greatly compressed, so that the purpose that the pressure-sensitive module can save space when performing various screen pressure senses or button pressure senses is achieved, the situation that the thickness of a middle frame of a terminal device needs to be reduced in the design and installation process of the traditional pressure-sensitive module due to the large size is reduced, and the stability and firmness of the terminal device are greatly improved;

furthermore, because the FPC substrate is set to the soft substrate of flexibility, consequently, the pressure is felt the module and can be realized the flexible bending and be arbitrary state to do benefit to it and can apply to and carry out the pressure and feel the use on the curved surface screen.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of a Wheatstone circuit structure according to the present invention;

fig. 3 is a schematic view of the screen and the pressing deformation structure of the pressure sensing module of the present invention;

fig. 4 is a schematic structural diagram ofembodiment 2 of the present invention;

fig. 5 is a schematic structural diagram ofembodiment 3 of the present invention;

FIG. 6 is a schematic view of a single pressure-sensitive structure of the present invention;

FIG. 7 is a schematic view of a second intermediate structure of the elongated pressure sensor of the present invention;

FIG. 8 is a schematic view of the large-area pressure-sensitive structure of the present invention;

FIG. 9 is a schematic diagram of a full-screen pressure structure of the present invention;

fig. 10 is a schematic structural view ofembodiment 4 of the present invention;

fig. 11 is a schematic structural view ofembodiment 5 of the present invention;

the touch screen comprises a Flexible Printed Circuit (FPC)substrate 1, insulatingink 2,conductive ink 3, amiddle frame 4, amiddle frame side 5, amounting area 6, ascreen 7, acurved screen 8, apressing surface 10, apositioning frame 11, a positioningelastic sheet 12, acontact plate 13, a ceramic substrate pressure sensing module A and an FPC substrate pressure sensing module A.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

In some embodiments, according to fig. 1, the present invention provides a terminal device, including: the pressure sensing module is positioned below a pressing operation part of the terminal equipment, and the pressing operation part is used for transmitting pressing pressure to the pressure sensing module; the pressure sensing module comprises: the conductive ink is attached to the surface of the FPC substrate; the conductive ink is attached to the surface of the FPC substrate, a circuit is arranged on the conductive ink, and the conductive ink and the circuit are both attached with insulating ink.

In the utility model, a layer ofconductive ink 3 is printed on theFPC substrate 1, the other surfaces of theconductive ink 3 except the surface connected with theFPC substrate 1 are coated with theinsulating ink 2, the surface with theinsulating ink 2 is used as apressing surface 10 and is connected with a pressing operation part of the terminal equipment or is arranged in the pressing operation part of the terminal equipment; therefore, the pressure-sensitive module formed by theinsulating ink 2, theconductive ink 3 and theFPC substrate 1 together deforms according to the pressing operation part or the pressure generated by the pressing operation part, and further changes of resistance are generated, so that the deformation information of the pressure-sensitive is converted into an electric signal.

Because the thickness of the FPC base material is thinner, compared with the traditional ceramic pressure-sensitive module, the FPC base material pressure-sensitive module provided by the utility model can greatly compress the installation thickness of the pressure-sensitive module, thereby reducing the product size of the terminal equipment in the design process; or the thickness of the shell of the terminal equipment is strengthened, thereby improving the structural strength of the terminal equipment.

Optionally, the pressing operation portion is an area for conducting finger pressure, the pressure sensing module is located between the terminal device and the pressing operation portion, and the pressing operation portion is a protection layer; the area for conducting the finger pressure comprises any position which is not limited to be arranged below the screen, on the surface of the screen, inside the frame or in the back plate of the terminal equipment. The thickness of the pressure sensing module is less than or equal to 0.15 mm.

The pressing operation part is used for conducting the area of finger pressure, and when the pressing operation part is used, the pressure sensing module is used for sensing the pressure of the pressing operation part and converting the pressure into an electric signal; the pressure sensing module can be arranged at any position of the terminal equipment with the pressing operation part according to actual needs to sense pressure and convert the pressure into an electric signal. The size less than or equal to 0.15mm of pressure-sensitive module can compress the installation size of pressure-sensitive module in terminal equipment by a wide margin to the casing thickness or the casing width that have the press operation portion part in the attenuate terminal equipment, thereby make terminal equipment's size carry out the mesh of attenuate.

Optionally, in order to output an effective and accurate pressure signal after the deformation is achieved, an output end of theFPC substrate 1 is connected to a wheatstone bridge, and since theconductive ink 3 is deformed to achieve a resistance value change, the deformation of theconductive ink 3 is used as a change value of the variable resistor Rx in the wheatstone bridge; when the conductive ink is used, the pressure sensing module can be slightly deformed by pressing thepressing surface 10 formed by theconductive ink 3, so that the variable resistor Rx can be deformed, and after the variable resistor Rx is deformed, the change of the AC terminal voltage can be output, and further reporting of a pressure sensing event is realized, so that further operation control of the terminal equipment after pressure sensing deformation is realized.

Further, because electrically conductive printing ink 3 prints onFPC substrate 1, consequently, the thickness of pressure sense module can compress by a wide margin, thereby realizes the homoenergetic when carrying out multiple screen pressure sense or button pressure sense of pressure sense module plays the purpose of space saving, reduces the condition that traditional pressure sense module need reduce its terminal equipment'scenter 4 thickness because of the size is huge in the design installation, has consequently improved greatly terminal equipment's stability and firmness.

Further, becauseFPC substrate 1 is flexible soft substrate, consequently, the pressure is felt the module and can be realized flexible crooked and for arbitrary state to do benefit to it and can apply to and carry out the pressure on the 8 screens of curved screen and feel the use.

Its ultra-thin design can be applicable to: the side button of the terminal equipment, the screen pressure of the cambered surface screen of the terminal equipment, the whole screen pressure of the terminal equipment or the screen pressure of the terminal equipment with a large area and a long strip shape.

The terminal device comprises and is not limited to electronic devices which need interaction, such as a screen, a pressure button and the like, and are used for mobile phones, tablet computers, intelligent wearing and the like.

Optionally, as shown in fig. 2 and 3, a surface of the conductive ink away from the FPC substrate is a press-receiving surface, and the press-receiving surface is configured to convert a generated pressure value into an electrical signal. The pressure sensor also comprises a Wheatstone bridge for realizing deformation output of effective pressure signals, and the input end of the Wheatstone bridge is connected with the electric signals generated by the pressing surface.

The variable resistor Rx in the wheatstone bridge is a resistance value generated by deformation of theconductive ink 3. The output end of the variable resistor Rx is the signal output end of theFPC substrate 1.

In order to output an effective and accurate pressure signal after deformation, the pressure-sensitive signal is transmitted by the Wheatstone bridge principle.

According to fig. 2 and 3, the wheatstone bridge comprises resistors R1, R2, R3 and Rx, the resistors R1, R2, R3 and Rx are sequentially connected end to form a ring, a bridge supply voltage VCC is connected between the resistor R1 and the resistor Rx, and a ground GND is connected between the resistor R2 and the resistor R3; and an AC output end is arranged between the resistor R1 and the resistor R2 and between the resistor Rx and the resistor R3.

As shown in fig. 2, wherein the resistors R1, R2, R3 are fixed resistors; RX is aconductive ink 3 printed in the line, which changes resistance value according to deformation.

As shown in fig. 3, when the sensing area is pressed, the pressure sensing module deforms slightly, so that the conductive ink 3Rx deforms, and the Rx resistance changes, thereby outputting a change in the AC terminal voltage, and reporting a pressure sensing event.

Assuming that the current flows through R1, the current of the R2 bridge arm ground is I1, the current flows through R3, the current of the Rx bridge arm ground is I2, and the power supply voltage of the bridge is VCC; the ground voltage at two ends of each resistor can be calculated through ohm's law, on two bridge arms of R1 and R2, VCC voltage is divided by R1 and R2, and the ground voltage obtained at two ends of the resistor of R2 is V1; on the bridge arms of R3 and Rx, VCC voltage is divided by R3 and Rx, the ground voltage obtained at two ends of a resistor R3 is V2, and V1 and V2 are calculated by ohm's law respectively as follows:

the calculation formula of the current I1 flowing through the resistors R1 and R2 is shown in formula (1):

the calculation formula of the voltage V1 across the R2 is shown in formula (2):

the formula for calculating the current I2 flowing through the resistors R3 and Rx is shown in formula (3):

the calculation formula of the voltage V2 across the R3 is shown in formula (4):

the calculation formula of the voltage difference Δ V between V1 and V2 is shown in formula (5):

if the four resistors R1, R2, R3 and Rx are in steady state, i.e. R1, R2 and R3 are fixed, and the resistor Rx is in steady state Rxa, the voltage difference Δ V is a fixed value, i.e. a fixed voltage difference Δ Va, and the bridge is in initial state; the calculation formula of the fixed voltage difference Δ Va is shown in equation (6):

when the pressure sensing module deforms due to external pressure, the resistance Rx changes, that is, Rxb, Δ V changes to a changed voltage difference Δ Vb, and a calculation formula of the changed voltage difference Δ Vb is shown in formula (7):

the change value of the voltage difference delta V in the two previous times and the change value of the voltage difference delta V in the two previous times can be recorded as a voltage difference change value delta V ', and the voltage difference change value delta V' is reported to a host terminal of the terminal equipment by the pressure sensing module, so that pressure sensing signal transmission is realized. Wherein, the formula of the voltage difference change value Δ V' is shown in formula (8):

and calculating a voltage difference change value delta V 'according to the fixed voltage difference delta Va in the initial state and the changed voltage difference delta Vb generated by the pressure sensing module according to the sensed pressure after deformation, so that a pressure sensing signal of the pressure sensing module is calculated according to the voltage difference change value delta V', and the host end of the terminal equipment judges according to the pressure sensing signal and sends a corresponding instruction signal, thereby realizing the purpose of pressure sensing interaction.

Optionally, as shown in fig. 4, the terminal device includes a middle frame and a middle frame side, wherein an installation area is arranged between the middle frame and the middle frame side, and the installation area is used for installing the pressure-sensitive module.

The mounting area is of a groove-shaped structure, and the width of the groove-shaped structure is less than or equal to 0.5 mm.

The thickness of the pressure sensing module is less than or equal to 0.15 mm.

One surface of theconductive ink 3 away from theFPC substrate 1 is apressing surface 10, and thepressing surface 10 is used for converting a generated pressure value into a resistance value and reporting the resistance value.

The thickness of the pressure sensing module is less than or equal to 0.15 mm. The thickness of the FPC base material is less than or equal to 0.1 mm.

Further, the terminal device comprises amiddle frame 4 and amiddle frame side 5, aninstallation area 6 is arranged between themiddle frame 4 and themiddle frame side 5, one surface, close to themiddle frame side 5, of theinstallation area 6 is used for being attached to thepressing surface 10, and theFPC base material 1 is close to themiddle frame 4.

The size of the pressure sensing module is less than or equal to 0.15mm, so that the cross section width of the mountingarea 6 is less than or equal to 0.15 mm.

Thepressing surface 10 realizes deformation of the pressure-sensitive module by pressing thescreen 7 or the button, that is, theconductive ink 3, the insulatingink 2 and the FPC deform to generate corresponding resistance values, the resistance values are reported to the host end of the terminal device, and the host end of the terminal device judges the resistance values and then sends corresponding instruction information, so that the purpose of pressure-sensitive interaction of thescreen 7 or the button can be realized.

When the FPC is used as a pressure sensing module of a side button of terminal equipment, the thickness of the FPC is thinner than that of a traditional ceramic substrate; therefore, the thickness of the FPC base material pressure sensing module A manufactured by theFPC base material 1 can be less than or equal to 0.15 mm; the thickness of the ceramic substrate pressure-sensitive module A 'manufactured by the traditional ceramic substrate is more than 0.5mm, and the thickness of the FPC substrate pressure-sensitive module A is 0.35mm thinner than that of the ceramic substrate pressure-sensitive module A' in the thickness of the ceramic substrate pressure-sensitive modules;

therefore, when the FPC substrate pressure sensing module A is used as a pressure sensing module of a side button, the mountingarea 6 between themiddle frame 4 and themiddle frame side 5 can be controlled within the range of less than or equal to 0.15 mm;

compared with the traditional ceramic pressure-sensitive module, the thickness between themiddle frame 4 and the mountingarea 6 can be thickened by 0.35mm in the manufacturing process of themiddle frame 4 using the FPC substrate pressure-sensitive module A, so that the strength of themiddle frame 4 is enhanced, and the peripheral size of the wholemiddle frame 4 is reduced.

Therefore, the situation that the size of theside edge 5 of the middle frame is increased by at least 0.35mm to ensure the strength of themiddle frame 4 when the traditional ceramic substrate pressure-sensitive module A' is used is avoided.

In a comparative example, this comparative example is the pressure of screen fingerprint version and feels module design scheme, places a pressure and feels module B1 in fingerprint unblock position, when the finger pressed the unblock in fingerprint position, and pressure feels module B1 receives pressure signal, then triggers screen bright spot and fingerprint module work, realizes fingerprint unblock function. In this comparative example, since the thickness of the pressure-sensitive module B1 is thick, the depth of the installation region in the center of themiddle frame 4 is deep, which results in a thickening of the thickness of the middle frame, and further, the thickness of the terminal device of comparative example 1 is thickened; comparative example 1 compared to example 3, at least the thickness increased by 0.35 mm.

Comparative example 2, in the design scheme of the pressure sensing module B2, a pressure sensing module B2 is respectively attached to the upper side and the lower side of the inner side of the middle frame at the side of the terminal equipment; when finger pressure is applied to the responsive zone, a key action is effected. In this comparative example, since the thickness of the pressure-sensitive module B2 is thick, the thickness of the side edge of the middle frame is thick, and further the width of the terminal device of comparative example 2 is widened; comparative example 2 compared to example 3, at least the width increased by 0.35 mm.

Comparative example 3, in this comparative example, the pressure sensing module B3 is designed such that a pressure sensing module B3 is provided on each of the upper and lower border regions of the terminal device, the pressure sensing module B3 is attached to the middle frame below the border, and a compressible rubber layer is added above the pressure sensing module B3, and the rubber layer is pressed against the glass cover plate in the border region, thereby realizing the key function when finger pressure is applied to the response region. In the comparative example, since the response areas are located at the upper and lower ends of the screen, the thickness of the upper and lower frames of the terminal device is increased due to the pressure sensing module B3 located at the frames of the terminal device, and thus the peripheral size of the terminal device is increased. Through utilizing the utility model provides a pressure module can effectively attenuate terminal equipment's width direction or thickness direction's size, improves terminal equipment's design size attenuate or the purpose that alleviates greatly.

The VA area shown in fig. 4 is a screen visible area.

Optionally, as shown in fig. 5 to 9, the pressure sensing module is disposed above the middle frame of the terminal device and below the screen of the terminal device.

The pressure-sensitive module is positioned below the screen and above the mounting layer, the area of the pressure-sensitive module is smaller than or equal to that of the screen, and when the area of the pressure-sensitive module is smaller than that of the screen module, a cavity formed between the lower side of the screen and the mounting layer is filled with elastic substances. The elastic substance is foam, a glue layer or silica gel.

The surface of the middle frame is provided with a mounting area, the mounting area is used for mounting the pressure sensing module, and the plane of the mounting area is lower than the plane of the middle frame.

The pressure sensing module is a transparent module and is arranged in the interlayer of the screen. Or the pressure-sensitive module is positioned on the lower surface of the screen, namely the screen and the pressure-sensitive module are positioned in the mounting area arranged on the surface of the middle frame, and the thickness of the pressure-sensitive module is less than or equal to 0.15 mm. The terminal equipment comprises amiddle frame 4 and ascreen 7, wherein thescreen 7 is arranged above themiddle frame 4, the lower surface of thescreen 7 is connected with thepressing surface 10, and theFPC base material 1 is arranged on one side, away from thepressing surface 10, of the upper surface of themiddle frame 4; so that the distance between themiddle frame 4 and thescreen 7 is less than or equal to 0.15 mm.

With reference to embodiments 1-2, in this embodiment, when the FPC base material pressure sensing module a manufactured by theFPC base material 1 is used as a screen pressure sensing module, the single pressure sensing module under the screen (shown in fig. 6), the long-strip pressure sensing module under the screen (shown in fig. 7), the large-area pressure sensing module under the screen (shown in fig. 8), and the full-screen pressure sensing module (shown in fig. 9) can be used according to the use requirement of thescreen 7;

because the thickness of the FPC base material pressure sensing module A manufactured by theFPC base material 1 is less than or equal to 0.15mm, when the FPC base material pressure sensing module A is installed below thescreen 7, themiddle frame 4 below thescreen 7 does not need to be hollowed and avoided; when the screen pressure sensing module is used, the mounting distance of the pressure sensing module between thescreen 7 and themiddle frame 4 is at least reduced by 0.35mm, so that themiddle frame 4 does not need to be hollowed independently in the using process, and meanwhile, themiddle frame 4 can be ensured to be thinned by 0.35mm at least under the condition that the design requirements and the mechanical strength can be met.

Optionally, as shown in fig. 10, the pressure-sensitive module is attached to the curved surface of the curved screen or the bendable region of the screen. The thickness of the pressure sensing module is less than or equal to 0.15 mm.

The terminal equipment comprises acurved screen 8, wherein thepressing surface 10 is attached to one surface, close to themiddle frame 4, of thecurved screen 8, one side, far away from thepressing surface 10, of theFPC base material 1 is attached to themiddle frame 4, and the distance between thecurved screen 8 and themiddle frame 4 is smaller than or equal to 0.15 mm. Thepressing surface 10 is attached to the under-screen copper layer of thecurved screen 8.

With reference to embodiments 1-3, in this embodiment, the FPC base material pressure sensitive module a is applied to the lower surface of thecurved screen 8; because the thickness of the FPC base material pressure sensing module A is less than or equal to 0.15mm, and theFPC base material 1 has the flexible and bendable characteristic, the FPC base material pressure sensing module A can be directly attached to one surface, close to themiddle frame 4, of thecurved screen 8, meanwhile, the distance between themiddle frame 4 and thecurved screen 8 can completely press the FPC base material pressure sensing module A, and the purpose that the thickness of thecurved screen 8 does not occupy more space of themiddle frame 4 is achieved;

furthermore, in order to ensure that thecurved screen 8 can be stable in the using process, thepressing surface 10 is attached to the lower copper sheet of thecurved screen 8, so that the situation of paving and hole digging below thecurved screen 8 is reduced, and the thickness of thecurved screen 8 in the manufacturing process is further reduced; because the intermediate medium that the spreading material dug the hole has been reduced to make the produced resistance value signal of pressure sense deformation reduce the loss in transmission process, make terminal equipment can be faster receive with accurate more stable pressure sense signal in the course of the work, its pressure sense signal is handled to further faster response, realizes faster human-computer interaction and experiences.

Further, when the pressure-sensitive design terminal equipment with the side edge being the waterfall screen, the surrounding screen and the like and the series of side edges being the cambered surface screens is used, a scheme is provided for designing the pressure-sensitive of the side edges. Compare in traditional pressure and feel the module, avoided traditional waterfall screen, surround the screen or crooked screen because of the crooked condition can not realize of traditional ceramic substrate pressure sense module A 'that ceramic substrate preparation formed in the use, further because it causes the unable condition that realizes thescreen 7 laminating completely between ceramic substrate pressure sense module A' and thescreen 7, causes the condition that both contact is bad, consequently causes the condition that the signal of pressing can not normally be perceived and transmit.

Optionally, the pressure-sensitive module is applied to the mobile terminal, and the mobile terminal is the terminal device.

The pressure-sensitive module can be applied to: the side button of the terminal equipment, the screen pressure of the cambered surface screen of the terminal equipment, the whole screen pressure of the terminal equipment or the screen pressure of the terminal equipment with a large area and a long strip shape. The mobile terminal comprises and is not limited to an electronic device which needs interaction, such as a screen, a pressure-sensitive button and the like, and is used for a mobile phone, a tablet personal computer, intelligent wearing and the like.

Optionally, as shown in fig. 11, one surface of the FPC near themiddle frame 4 is provided with positioning frames 11, the positioning frames 11 are in a strip structure, and at least two positioning frames 11 are provided; themiddle frame 4 is provided with positioningelastic pieces 12, and the number of the positioningelastic pieces 12 is in one-to-one correspondence with that of the positioning frames 11; the positioningelastic sheet 12 is positioned below thepositioning frame 11 and is in contact with thepositioning frame 11; an included angle is formed between the positioningelastic sheet 12 and themiddle frame 4, and the included angle ranges from 5 degrees to 20 degrees; the positioningelastic sheet 12 is used for connecting the positive pole and the negative pole of the host end of the terminal equipment.

The positioningelastic sheet 12 is further provided with acontact plate 13 parallel to thepositioning frame 11, and thecontact plate 13, the positioningelastic sheet 12 and thepositioning frame 11 are all in electrical contact.

When the pressure sensing module is used, the pressure value of the pressure sensing module can be transmitted through thepositioning frame 11, thecontact plate 13 and the positioningelastic sheet 12; the length of thepositioning frame 11 is greater than the lengths of the positioningelastic sheet 12 and thecontact plate 13, so that when the pressure sensing module is applied to thecurved screen 8, the positioningelastic sheet 12 can move within the length range of thepositioning frame 11 and cannot be separated from the contact of thepositioning frame 11, and because an included angle is formed between the positioningelastic sheet 12 and themiddle frame 4, the positioningelastic sheet 12 can apply a reverse force to thecontact plate 13 in the use process, the reverse force can firmly support thecontact plate 13 against the effective contact surface of thepositioning frame 11, and further thepositioning frame 11 and thecontact plate 13 cannot be disconnected in the signal transmission process;

further, because the pressure module withcenter 4 need not weld as an organic wholely, when maintaining terminal equipment from this, only need with the pressure module orcenter 4 that damage carry out solitary take out the replacement can, effectively improved maintenance efficiency, reduce the tradition simultaneously because of with the pressure module withcenter 4 bond as an organic wholely cause the condition that thewhole center 4 of direct change was in the damage back of pressure module, saved cost of maintenance greatly.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (13)

1. A terminal device, comprising:

the pressure sensing module is positioned below a pressing operation part of the terminal equipment, and the pressing operation part is used for transmitting pressing pressure to the pressure sensing module;

the pressure sensing module comprises: the conductive ink is attached to the surface of the FPC substrate;

the conductive ink is attached to the surface of the FPC substrate, a circuit is arranged on the conductive ink, and the conductive ink and the circuit are both attached with insulating ink.

2. The terminal device according to claim 1, wherein the pressing operation part is a region for conducting finger pressure, the pressure sensing module is located between the terminal device and the pressing operation part, and the pressing operation part is a protective layer;

the area for conducting the finger pressure comprises any position arranged below a screen, on the surface of the screen, on the inner side of a frame or in a back plate of the terminal equipment.

3. The terminal device of claim 1, wherein the pressure sensing module is disposed above a center of the terminal device and below a screen of the terminal device.

4. The terminal device as claimed in claim 1, wherein the pressure sensitive module is located below the screen and above the mounting layer, the area of the pressure sensitive module is smaller than or equal to the area of the screen, and when the area of the pressure sensitive module is smaller than the area of the screen module, the cavity formed between the mounting layer and the below of the screen is filled with an elastic substance.

5. The terminal device as claimed in claim 3, wherein the surface of the middle frame is provided with a mounting area for mounting the pressure sensing module, and the plane of the mounting area is lower than the plane of the middle frame.

6. The terminal device of claim 5, wherein the pressure-sensitive module is a transparent module, and the pressure-sensitive module is disposed in a sandwich of the screen.

7. The terminal device according to claim 1, wherein the pressure-sensitive module is disposed at a side of the middle frame, the terminal device comprises a middle frame and a side of the middle frame, and a mounting area is disposed between the middle frame and the side of the middle frame, and the mounting area is used for mounting the pressure-sensitive module.

8. A terminal device according to claim 7, characterised in that the mounting area is a trough-like structure having a width of 0.5mm or less.

9. The terminal device of claim 1, wherein the pressure sensing module is attached to a curved surface of the curved screen or a bendable region of the screen.

10. The terminal device of claim 1, wherein the thickness of the pressure sensing module is 0.15mm or less.

11. The terminal device according to claim 1, wherein a surface of the conductive ink remote from the FPC substrate is a press-receiving surface for converting a generated pressure value into an electrical signal.

12. The terminal device as claimed in claim 11, further comprising a wheatstone bridge for performing deformation to output an effective pressure signal, wherein an input terminal of the wheatstone bridge is connected to the electrical signal generated by the pressing surface.

13. A pressure sensing module applied to a mobile terminal, wherein the mobile terminal is the terminal device according to any one of claims 1 to 12.

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