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TOUCHSCREEN OVERLAY APPARATUS

TECH N I CAL FI ELD The present invention relates to a cover for devices comprising a capacitive touchscreen , in particular is suitable for assisting a user with touch interaction on said touchscreen.

BACKGROU N D

Mobile electronic devices with capacitive touchscreen, such as smartphones and tablets, are widely used throughout the world nowadays. Examples of representative products are iPhones, iPods and iPads of Apple I nc. of USA, and Android phones and tablets m anufactured by the Am erican internet search engine com pany, Google.

The most im portant feature of these devices is the use of a touchscreen allowing the use of the fingers. For instance, these devices enable gam es to be easily downloaded using an application store or the like, and thereby allow a user to enjoy various games. However, since an input operation should be perform ed by a virtual button that is shown on a front touchscreen so as to m anipulate a gam e, it is difficult to rapidly and precisely perform the input operation . Also, the accuracy of the virtual button operation is not as good as, for exam ple, a physical game handle, and the user's finger can block the sight and affect the display effect. Moreover, a user cannot experience a desirable grip sensation during the operation .

Not only in games, but also in other occurrences where multiple virtual buttons need to be operated in random orders and/or com binations, especially those that need a finger operation across the touchscreen , assistance is desired. On the other hand, a protection cover for the device’s (smartphones, tablets, etc.) body and touchscreen from scratch and wear, often com es with the device itself. There is a desire that such cover shall offer enough protection to the device, and meanwhile it does not significantly increase the dimension and weight after assembled on the device.

There are products available on the market that aim to solve m entioned problems. CN108339269 provides a modular gam epad used for a sm art phone, wherein the modular gam epad is arranged on a rear shell of the sm art phone, a gamepad rear shell and the rear shell of the smart phone are in contact attaching, and the modular gamepad is detachably connected with the smart phone, and can be separated from the smart phone when not in use. However, this gamepad first requires external battery, which comes with extra weight and manufacturing cost. Second, the gamepad requires to be matched with the games such all the buttons on the gamepad are paired with a function in the game. It restricts the use of the invention only in appointed games.

CN208079192 provides a cell phone protection shell type mobile games peripheral hardware, comprising a housing, at least one side angle of casing is equipped with the recreation button, wherein the recreation button is connected with the cell phone using wired and/or radio communication through a chip. However, the establishment needs a special setting to connect the recreation button and virtual button on the screen. And it requires external battery for the chip. It increases the manufacturing cost and the learning cost for a user.

W02009036375 offers a user control device suitable for use in cooperation with information systems. In one of the embodiments (Fig. 6B), it offers a cover for a smartphone that contains physical buttons on the surface that is above the touchscreen, wherein the cover transfer the button pressing into screen touching so as to assist the touchscreen operation. It however, first significantly increases the dimension and weight after assembled to a smartphone. Second, it does not solve the problem that touching operation blocks the sight of a user.

The current gap for designing a cover for devices comprising a touchscreen is that it shall i) assist a touch interaction; ii) is easy to operate and assemble; iii) not increase the dimension and weight significantly; iv) possibly protect the electronic device; v) come with simple design and low manufacturing cost.

SUMMARY OF THE I NVENTI ON

The invention provides a cover for electronic devices comprising a capacitive touchscreen, suitable for assisting a user with touch interaction on said touchscreen, comprising:

- a body suitable for at least partly embracing the device at at least one or more edges and/or back of the device; - at least one user interaction point on the edge and/or the back of the body, which comprises an exposed electrically conductive element;

- at least one contact point, which comprises an exposed electrically conductive element;

- a connection electrically linking the electrically conductive element of the user interaction point to the electrically conductive element of the contact point;

wherein at least part of the cover covers the touchscreen, wherein the contact point is positioned at a part of the cover which covers the touchscreen, preferably at the side of said part of the cover that faces the touchscreen.

The invention also provides another two different versions (version 2 and version 3) of the invention from the first aspect, in a subject in need thereof, the two variations further comprising a detachable front panel that covers the touchscreen, wherein the contact point is positioned on the front panel.

The inventor has thus realized a cover suitable for assisting a user with touch interaction on a capacitive touchscreen in an electronic device, in which the cover transfer the static electricity from the finger to the contact point via conductive elements, and thus allow the user to virtually touch the touchscreen.

DESCRI PTI ON OF FI GURES

Fig.1 A shows schematically a perspective view of the cover of a first version.

Fig .1 B shows schematically a top view of the cover of Fig.1 A.

Fig. 2 A shows schematically a perspective view of the cover of Fig. 1A when assembled on a smartphone.

Fig.2B shows schematically a perspective view of Fig.2A from a different angle. Fig.2C shows schematically a perspective view of Fig.2A in different layers before assembled on a smartphone.

Fig.2D shows schematically a perspective view of Fig.2C from a different angle.

Fig.3A shows schematically a perspective view of the user interaction point, the electrical connection and the contact point in one preferred embodiment.

Fig.3B shows schematically a sectional view of Fig.3A.

Fig.4A shows schematically a perspective view of the cover of a second version. Fig.4B shows schematically a perspective view of the cover of Fig. 4A when the front panel is apart from the base cover.

Fig. 5A shows schematically a perspective view of the cover of Fig. 4A when assembling on a smartphone.

Fig.5B shows schematically a perspective view of Fig.5A in different layers before assembled on a smartphone.

Fig.6A shows schematically a perspective view of the cover of a second version in another preferred embodiment where the front panel can flip.

Fig.6B shows schematically a perspective view of the cover of Fig.6A when the flip front panel is open.

Fig.7A shows schematically a perspective view of the cover of a third version.

Fig.7B shows schematically a perspective view of the cover of Fig. 7A when the front panel is apart from the base cover.

Fig. 8A shows schematically a perspective view of the cover of Fig.7A when assembling on a smartphone.

Fig.8B shows schematically a perspective view of Fig.8A in different layers before assembled on a smartphone.

DETAI LED DESCRI PTI ON OF THE I NVENTI ON

The present invention concerns a cover suitable for assisting a user with touch interaction on a capacitive touchscreen in an electronic device.

Unless otherwise defined, all terms used in disclosing the invention, including technical and scientific terms, have the meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. By means of further guidance, term definitions are included to better appreciate the teaching of the present invention.

Cover version 1

The invention provides a cover for electronic devices comprising a capacitive touchscreen, suitable for assisting a user with touch interaction on said touchscreen, comprising: - a body suitable for at least partly embracing the device at at least one or more edges and/or back of the device;

- at least one user interaction point on the edge and/or the back of the body, which comprises an exposed electrically conductive element;

- at least one contact point, which comprises an exposed electrically conductive element;

- a connection electrically linking the electrically conductive element of the user interaction point to the electrically conductive element of the contact point;

wherein at least part of the cover covers the touchscreen, wherein the contact point is positioned at a part of the cover which covers the touchscreen, preferably at the side of said part of the cover that faces the touchscreen.

The inventor has thus realized a cover suitable for assisting a user with touch interaction on a capacitive touchscreen in an electronic device, in which the cover transfer the static electricity from the finger to the contact point via conductive elements, and thus allow the user to virtually touch the touchscreen.

In a preferred embodiment, the body (3) of the present invention is first able to cover the touchscreen (11) in an electronic device, at least part of the touchscreen, preferably close to the edges of the touchscreen. Wherein at least one contact point (4) is positioned on the body that covers the touchscreen. The body (3) embraces the electronic device (6) at at least one or more edges and/or back of the device. In any case, it is to ensure that when assembled on an electronic device, there is no plane displacement (horizontal or vertical) of the cover (1), such that the cover stays fixed. There is at least one user interaction point (2) positioned on the edge and/or the back of the body, preferably on the edge of the body. In a preferred embodiment, the cover further comprises at least one magnets or (Ferro) metal part at the back, such that it could be placed on other types of covers.

In a preferred embodiment, the body, at least the part that able to cover the touchscreen, is (substantially entirely) transparent (for instance, hardened glass), such that the present invention does not affect user’s sight when using the touchscreen (11). The part of the cover where the contact point (4) is positioned is accordingly also transparent for the same reason. This part of the cover and the contact point can for instance comprise (or even consist of) indium tin oxide (ITO). The body (3) comprises at least one layer, preferably two layers or more, wherein the contact point is positioned on the layer that is closest to the touchscreen when the cover ( 1 ) assembled to an electronic devices. The body, at least the part that able to cover the touchscreen , and the contact point (4) are parallel to the touchscreen , namely flat. Such that when assembled on an electronic device, a rugged surface is avoided.

Preferably the user interaction point (2) and the contact point (4) are paired with each other, and linked by an electrical connection (5) . Both said user interaction point (2) and said contact point (4) com prises an electrically conductive elem ent that is exposed. Thus an electrical circuit is built between the electrically conductive elem ent in the user interaction point (2) and the electrically conductive elem ent in the contact point (4) . Such that when a user touches a finger on the user interaction point (2) , specifically the electrically conductive elem ent, the static electricity is transferred from the user’s finger to the contact point (4) , specifically the electrically conductive elem ent. I n this way, the user touches the touchscreen ( 1 1 ) virtually. Present invention offers one or more pairs of the user interaction point (2) and the contact point (4) , preferably two pairs.

The user interaction point (2) , the contact point (4) and the electrical connection (5) are not intended to be positioned at the part of the body (3) that presents right in front of the center of the touchscreen ( 1 1 ) . I nstead, it is preferred to keep them close to the edges. This way, they do not affect user’s sight when using the touchscreen. I n a preferred em bodim ent, the contact point (4) and the electrical connection (5) are on the body that covers the touch screen, and are close to the edge. Whereas the user interaction point (2) is positioned on the sam e edge or at the back of the cover ( 1 ) .

I n one preferred embodim ent, the user interaction point (2) comprises a mechanical actuator (8) , which comprises an electrically conductive com ponent (9) and an insulator housing ( 10) . The actuator (8) is adapted to move upon exertion of force in a first direction , whereby movem ent in said first direction establishes an electrical connection between the electrically conductive component (9) of the actuator (8) and the electrical connection (5) , and eventually the electrically conductive elem ent of the user interaction point (4) . I n another preferred embodim ent, the user interaction point (2) is an essentially stationary touch point, namely the electrically conductive component (9) is fixedly connected with the electrical connection (5) . I n any case, it is to confer a responding force to the user’s finger when a user touches the user interaction point (2) , essentially confers a push/tap experience to the user. I n a further preferred embodim ent, the user interaction point (2) is is adapted to be repositioned on the cover, such that a user can adjust it according to the hand size and user preference. This can be achieved by a variety of means, for instance, by having the user interaction points themselves being removably attachable to the cover (glue, magnet, etc. for attachm ent) at either fixed positions or continuous positions. The electric connector can be modified to allow this implem entation, for instance by extending over a certain region of the cover, thereby allowing connection to the user interaction points at a number of positions.

The contact point (4) comprises an electrically conductive element that receives the static electricity from the user’s finger, thereby operating as a proxy for the user’s finger, which is used to operate a certain point on the touchscreen ( 1 1 ) . One challenge for the contact point is to reinforce the static electricity that applies on said point, essentially the electric field that applied on said point. I n a preferred embodim ent, a coiled conductor is, for instance, used for above said purpose.

As mentioned above, to m eet the user’s expectations, the cover ( 1 ) is desired to be thin and light. The cover ( 1 ) is also expected to be easily adapted to an electronic device and stiff enough to protect the contact point (4) , for instance. Typical m aterial to manufacture present invention comprises plastic, resin rubber, and other standard m aterials. Moreover, the thickness of the cover, at least the part that covers the touchscreen, preferably is not over 4 m m .

Present invention is a cover ( 1 ) for an electronic device (6) that com prises a touchscreen ( 1 1 ) , suitable for assisting a user with touch interaction on said touchscreen. I n a preferred em bodim ent, said device (6) is a handhold device that is suitable to operate with m erely two hands. The aim of present invention is to assist the user with touch interaction , while the two hands stay in a relatively fixed position . It is essential to keep the virtual buttons on the touch screen and the user interaction point (2) within the fingers reach range. For example, in a preferred embodim ent, when present invention assembled on an electronic device (6) , the virtual buttons on the touch screen are for the thum bs, the user interaction point (2) is reachable for the forefinger.

I n a preferred em bodim ent, the first version of present invention is assem bled to an electronic device (6) optionally with a coordinating base cover (7) , which offers additional cover to the back of said device (6) . I n principle, the base cover (7) can be any cover that is suitable to cover the back of the device (6) . It nevertheless needs to consider the coordination at the part where the base cover (7) contacts said cover ( 1 ) , if it happens thereof.

Additionally, present invention comprises openings on the body (3) , preferably on the edge, that is suitable for operating actuators (e.g. : volume button, on/off button) and the passage of electric wiring for the electronic device (6) (e.g. : charging cable, headset cable, data transm ission cable) . It nevertheless shall m atch the designated electronic devices.

When the first version of current invention is in use, a user needs to first apply the cover ( 1 ) to an electronic device (6) , specifically the contact point is facing the touchscreen ( 1 1 ) . Then the user often needs to move the virtual button on the touchscreen to the contact point (4) . I n a preferred embodiment, where the contact point (4) is substantially invisible, an indicator of the position of the contact point (4) can be form ed by a thickening on the surface at the corresponding position. Thus the virtual button on the touchscreen ( 1 1 ) needs to be moved to the thickening indicator in this occurrence. I n a further preferred embodiment, the user can further adjust interaction point according to the hand size and user preference. Then the assembling of the cover ( 1 ) and the electronic device is finished.

I n a particular em bodim ent, the body com prises a front part or front panel for covering the touchscreen of the electronic device, whereby said front part or front panel is hingedly attached to the rest of the body, and whereby preferably the electric connection between the (electrically conductive elements of the) interaction point and the contact point is achieved via the hinge attachments.

Cover version 2

A cover for devices com prising a capacitive touchscreen , suitable for assisting a user with touch interaction on said touchscreen , com prising:

- a body suitable for at least partly embracing the device at at least one or more edges and/or back of the device, com prising:

• at least one user interaction point on the edge and/or the back of the body, which comprises an exposed electrically conductive elem ent ;

• at least one electric connector electrically linked to the electrically conductive elem ent of the user interaction point ;

- a front panel suitable for at least partly covering the touchscreen , and is adapted for being detachably connectable to the body, comprising; • at least one contact point on the front panel that comprises an exposed electrically conductive element;

• at least one electric connector electrically linked to said contact point; wherein the contact point is preferably positioned at the side of the front panel that faces the touchscreen, wherein the an electric connection is established between the electric connectors of the front panel and the body when said body and said panel are assembled.

In a preferred embodiment, the front panel is hingedly attachable to the body around a hinge axis, optionally via a magnetic interaction between the two, preferably whereby the hinge axis is positioned at the edge of the electrical connector electrically linked to the contact point and the user interaction point.

In a further preferred embodiment, the front panel and the body can be magnetically coupled (via magnet and magnetic material) at at least one of their edges, and preferably four edges, to form a casing adapted to size and dimension of the electronic device.

In a preferred embodiment, the body (17) of the second version embraces the electronic device (6) at at least one or more edges and/or back of the device. There is at least one user interaction point (2) positioned on the edge and/or the back of the body, preferably on the edge of the body (17). The body (17) comprises at least one electric connector (15), that is exposed and electrically linked to the user interaction point (2). In a preferred embodiment, the body (17) further comprises at least one magnets or (Ferro) metal part at the back, such that it could be placed on other types of covers. The second version of a cover (1) further comprises a separate front panel comprising at least one contact point (4) and at least one electric connector (16) that is exposed and electrically linked to the contact point (4).

Preferably, said body (17) and said front panel (12) are adapted to be fixedly connected when assembled together. The connection may rely on magnetic force and/or mechanical force, and preferably comprises a hinging means, allowing the front panel to hingedly move with respect to the body around a hinge axis. In a preferred embodiment, the hinge axis is positioned at the edge of the electrical connector, and allows the conductive elements of the contact point and user interaction point to be electrically linked. It is crucial that when assembled, there is no plane displacement of the front panel (12). When assembled, the electronic device (6) is in between the front panel (12) and the body (17), with the touchscreen

(11) facing the front panel (12). When not desired, said front panel (12) is detachable from said body (17).

Preferably, the front panel (12) is transparent (for instance, hardened glass), such that it does not affect user’s sight when using the touchscreen (11). Accordingly, the contact point (4) is also transparent for the same reason. This part of the cover and the contact point can be formed by material which comprises indium tin oxide (ITO). The front panel (12) comprises at least one layer, preferably two layers or more. The contact point (4) is positioned on the layer (14) that is closest to the touchscreen (11) when assembled on an electronic device (6). The contact point (4) and the electric connector (16) are not intended to be positioned at the front panel

(12) that presents right in front of the center of the touchscreen (11). Instead, it is preferred to keep them close to the edges. Such that they do not affect user’s sight when using the touchscreen. The front panel (12), and the contact point (4) are parallel to the touchscreen, namely flat. Such that when assembled on an electronic device, a rugged surface is avoided.

The user interaction point (2) and contact point (4) may or may not follow the same design described in the first version of the cover (1).

Preferably, when the front panel (12) and the body (17) are assembled, the electric connector (15) in the body (17) and the electric connector (16) in the panel (12) are electrically connected. In other words, said user interaction point (2), said electric connector (15), said electric connector (16) and said contact point (4) are grouped. In a preferred embodiment, the cover (1) contains more than one set of above said group, preferably two sets of above said group.

Similar to the first version, the material for both the front panel (12) and the body (17) are meeting the user’s requirements, as disclosed above. Similarly, the second version of the cover (1 ) is designated for a handhold electronic device that is suitable to operate with merely two hands. Further similarly, the body (17) comprises openings, preferably on the edge, that is suitable for operating actuators (e.g.: volume button, on/off button) and the passage of electric wiring for the electronic device (6) (e.g.: charging cable, headset cable, data transmission cable). It nevertheless shall match the designated electronic devices. When the second version of current invention is in use, a user needs to first apply the body ( 1 7) to an electronic device (6) from its back. Then apply the front panel ( 12) to the touchscreen ( 1 1 ) . Following, the user needs to move the virtual button on the touchscreen to the contact point (4) . I n a preferred em bodiment, where the contact point (4) is substantially invisible, an indicator of the position of the contact point (4) can be form ed by a thickening on the surface of the front panel ( 12) at the corresponding position. Thus the virtual button on the touchscreen ( 1 1 ) needs to be moved to the thickening indicator in this occurrence. I n a further preferred em bodiment, the user can further adjust interaction point according to the hand size and user preference. Then the assem bling of the cover ( 1 ) and the electronic device is finished. When it is not desired, detach the front panel ( 12) from the body ( 1 7) . The body can stay and be used as a norm al cover.

Cover version 3

A cover for devices com prising a capacitive touchscreen , suitable for assisting a user with touch interaction on said touchscreen , com prising:

- a body suitable for at least partly embracing the device at at least one or more edges and/or back of the device;

- a front panel suitable for at least partly covering the touchscreen, com prising;

• at least one user interaction point on the panel, which comprises an exposed electrically conductive elem ent;

• at least one contact point on the front panel, said contact point com prising an exposed electrically conductive element ;

• a connection electrically linking the electrically conductive elem ent of the user interaction point and the electrically conductive elem ent of the contact point ;

wherein the contact point is preferably positioned at the side of the front panel that faces the touchscreen, and wherein said front panel is adapted for being detachably connectable to the body.

I n a preferred em bodiment, the front panel ( 18) of the third version of present invention comprises at least one user interaction point (2) on the panel, at least one contact point (4) on the front panel, a connection (5) electrically linking said user interaction point (2) and said contact point (4) , specifically the electrically conductive elem ent on both. Preferably, the front panel (18) is transparent (for instance, hardened glass), such that it does not affect user’s sight when using the touchscreen (11). Accordingly, the contact point (4) is also transparent for the same reason. This part of the cover and the contact point can be formed by material which comprises indium tin oxide (ITO). The front panel (18) comprises at least one layer, preferably two layers or more. The contact point (4) is positioned on the layer (20) that is closest to the touchscreen (11) when assembled on an electronic device (6).

Preferably, said user interaction point (2), said contact point (4) and said connection (5) are grouped. The front panel comprises at least one of such group, preferably two. Said group is not intended to be positioned at the front panel (18) that presents right in front of the center of the touchscreen (11). Instead, it is preferred to keep them close to the edge. Such that they do not affect user’s sight when using the touchscreen. The front panel (18), and the contact point (4) are parallel to the touchscreen, namely flat. Such that when assembled on an electronic device, a rugged surface is avoided.

In a preferred embodiment, the body (19) of the third version of present invention is suitable for at least partly embracing the device at at least one or more edges and/or back of the device. The body (19) comprises opening (22) suitable for hosting the user interaction point (2). In a preferred embodiment, the body (19) further comprises at least one magnet or (Ferro) metal part at the back, such that it could be placed on other types of covers.

Preferably, said body (19) and said front panel (18) are adapted to be fixedly connected when assembled together. The connection comprises magnetic force and/or mechanical force. It is crucial that when assembled, there is no plane displacement of the front panel (18). When assembled, the electronic device (6) is in between the front panel (18) and the body (19), with the touchscreen (11) facing the front panel (18). When not desired, said front panel (18) is detachable from said body (19)

The user interaction point (2), the connection (5) and the contact point (4) may or may not be following the same design described in the first and second version of the cover (1 ).

Similar to the first version, the material for both the front panel (18) and the body (19) are meeting the user’s requirements, as disclosed above. Similarly, the second version of the cover ( 1 ) is designated for a handhold electronic device that is suitable to operate with merely two hands. Further sim ilarly, the body ( 19) comprises openings, preferably on the edge, that is suitable for operating actuators (e.g. : volume button, on/off button) and the passage of electric wiring for the electronic device (6) (e.g. : charging cable, headset cable, data transm ission cable) . It nevertheless shall m atch the designated electronic devices.

I n a particularly preferred em bodim ent, the cover defines an essentially cuboid shape, whereby, aside from the user interaction points, in essence no elements extend from said cuboid shape over a distance of more than 2 m m . It is the applicants aim to provide for a cover in its most sim plistic design , thereby not significantly increasing dim ensions of the electronic device held by it. Notwithstanding the user interaction points, the outer dim ensions of the cover with respect to the inner dimensions defined thereby do not exceed 8 m m , preferably do not exceed 5 m m .

When the third version of current invention is in use, a user needs to first apply the body ( 19) to an electronic device (6) from its back. Then apply the front panel ( 18) to the touchscreen ( 1 1 ) . Following, the user needs to move the virtual button on the touchscreen to the contact point (4) . I n a preferred embodiment, where the contact point (4) is substantially invisible, an indicator of the position of the contact point (4) can be form ed by a thickening on the surface of the front panel ( 18) at the corresponding position. Thus the virtual button on the touchscreen ( 1 1 ) needs to be moved to the thickening indicator in this occurrence. I n a further preferred em bodiment, the user can further adjust interaction point according to the hand size and user preference. Then the assem bling of the cover ( 1 ) and the electronic device is finished. When it is not desired, detach the front panel ( 18) from the body ( 19) . The body can stay and be used as a norm al cover.

EXAM PLE

A preferred em bodiment of the present invention is presented below. It is however clear that other embodim ents can easily be contemplated within the scope of the invention. The presentation below should thus not be construed restrictive, but it should be realized that the skilled person will easily apply modifications to the presented exam ple without reappraisal of the appended claims. EXAM PLE 1

Fig. 1 -2 show one preferred em bodiment of the first version of present invention. The cover com prises :

- a body suitable for em bracing a smartphone at four edges;

- two user interaction points on one edge of the body, which com prises an exposed electrically conductive metal;

- two contact points, each com prises an exposed electrically coiled conductor;

- two connections, each electrically linking the electrically conductive m etal of the user interaction point to the electrically coiled conductor of the contact point ;

wherein the cover fully covers the touchscreen , wherein the contact points are positioned at the side of the cover that faces the touchscreen.

The body (3) of the present example is first able to fully cover the touchscreen ( 1 1 ) , wherein the contact points (4) are positioned on the body that covers the touchscreen. The body (3) em braces the electronic device (6) at four edges. Thus, it is ensured that when assem bled on a sm artphone, there is no plane displacement (horizontal or vertical) of the cover ( 1 ) , such that the cover stays fixed. There are two user interaction points (2) positioned on the edge the body.

The body is m ade of transparent plastic, such that the present invention does not affect user’s sight when using the touchscreen ( 1 1 ) . The contact point (4) positioned on wherein is accordingly also transparent. The body (3) comprises one layer, wherein the contact point is positioned on the side that the faces touchscreen when the cover ( 1 ) assem bled to a smartphone. The body and the contact point (4) are flat, such that when assembled one a sm artphone, a rugged surface is avoided.

The user interaction point (2) and the contact point (4) are paired with each other, and linked by an electrical connection (5) . Both said user interaction point (2) and said contact point (4) comprises electrically conductive elem ent that is exposed. Thus an electrical circuit is built between the electrically conductive elem ent in the user interaction point (2) and the electrically conductive element in the contact point (4) . Such that when a user touches a finger on the user interaction point (2) , specifically the electrically conductive metal (9) , the static electricity is transferred from the user’s finger to the contact point (4) , specifically the electrically coiled conductor. I n this way, the user touches the touchscreen ( 1 1 ) virtually. Present embodiment offers two pairs of the user interaction point (2) and the contact point (4) .

The contact point (4) and the electrical connection (5) are positioned close to the edges and the user interaction point (2) is positioned on the sam e edge, such that they do not affect user’s sight when using the touchscreen . The user interaction point (2) is a button (8) , as shown in Fig. 3. It comprises an electrically conductive metal (9) and an plastic housing ( 10) . The button (8) is adapted to move upon exertion of force downwards, whereby such movement establishes an electrical connection between the electrically conductive metal (9) of the button (8) and the electrical connection (5) , and eventually the electrically coiled conductor of the user interaction point (4) . It is to confer a responding force to the user’s finger when a user touches the button (2) , essentially confers a push/tap experience to the user.

The contact point (4) com prises a coiled conductor that receives the static electricity from the user’s finger, which is used to operate a certain point on the touchscreen ( 1 1 ) . It reinforces the static electricity that applies on said point, essentially the electric field that applied on said point.

Present invention is designated for the sm artphone as shown. When a user uses it during a video gam e, the user first needs to move two artificial touch points in the game (e.g. shooting, moving, speeding) to the edges of the touch screen to m eet the contact points (4) . During the gam e, the user holds the smartphone in their hands, with two thum bs touching som e of the artificial points on the touchscreen and two forefingers touch the user interaction points (2) . I n this way, the user doesn’t have to move their hands to operate the game.

I n this em bodiment, the cover is assem bled to smartphone (6) with a coordinating base cover (7) , which covers the four edges and the back of the sm artphone (6) . I n principle, the base cover (7) can be any cover that fits in the cover ( 1 ) . It offers additional protection to the smartphone and can be used as a normal phone cover. While applying the present em bodim ent, a user does not have to take off the base cover, and thus brings convenience and total protection to the smartphone.

Present embodiment com prises openings on the edges of the body (3) , for volum e button , on/off button and the passage of charging cable, headset cable, data transm ission cable. The shape and dim ensions are m atched to the designated sm artphone. EXAMPLE 2

Fig.4-5 show one preferred embodiment of the second version of present invention. The cover comprises:

- a body suitable for embracing a smartphone at four, comprising:

• two user interaction points on the edge of the body, which comprises an exposed electrically conductive metal on each;

• two electric connector electrically linked to the electrically conductive metal of the user interaction point;

- a front panel suitable for fully covering the touchscreen, and is adapted for being detachably connectable to the body, comprising;

• two contact point on the front panel that comprises an exposed electrically coiled conductor;

· two electric connector electrically linked to said contact point;

wherein the contact point is positioned at the side of the front panel that faces the touchscreen, wherein the an electric connection is established between the electric connectors of the front panel and the body when said body and said panel are assembled.

The body (17) of the second version embraces the electronic device (6) at four edges. There are two user interaction point (2) positioned on the edge of the body (17). The body (17) further comprises two electric connector (15), that is exposed and electrically linked to the user interaction point (2). The cover (1) further comprises a separate front panel (12) comprising two contact point (4) and two electric connector (16) that is exposed and electrically linked to the contact point (4).

Said body (17) and said front panel (12) are adapted to be fixedly connected when assembled together with mechanical force and/or magnetic force on the edge, wherein the front panel (12) stays fixed when assembled. When assembled, the smartphone (6) is in between the front panel (12) and the body (17), with the touchscreen (11) facing the front panel (12). When not desired, said front panel (12) is detachable from said body (17).

The front panel (12) is made of transparent plastic, such that it does not affect user’s sight when using the touchscreen (11). Accordingly, the contact point (4) is also transparent for the same reason. The front panel (12) comprises two layers. The contact point (4) is positioned on the layer (14) that is closest to the touchscreen (11) when assembled on a smartphone(6). An extra layer (13) is shielding the front panel from, for instance, scratch and wear. The contact point (4) and the electric connector (16) are positioned close to the edges of the front panel (12), such that they do not affect user’s sight when using the touchscreen. The front panel (12), and the contact point (4) are flat, such that when assembled on an electronic device, a rugged surface is avoided.

The user interaction point (2) and contact point (4) are following the same design described in example 1.

When the front panel (12) and the body (17) are assembled, the electric connector (15) in the body (17) and the electric connector (16) in the panel (12) are electrically connected. In other words, said user interaction point (2), said electric connector (15), said electric connector (16) and said contact point (4) are grouped. In a preferred embodiment, the cover (1) contains two sets of above said group, preferably two sets of above said group.

Similar to example 1 , the front panel (12) and the body (17) are light, thin and with enough stiffness to protect the smartphone. Similarly, when assembled, the cover is used in the same approach as described in example 1. When not desired, the user could merely take off the front panel and use the body as a normal phone cover. Present embodiment comprises openings on the edges of the body (17), for volume button, on/off button and the passage of charging cable, headset cable, data transmission cable. The shape and dimensions are matched to the designated smartphone.

Fig. 6 show one further preferred embodiment of the second version of present invention. This embodiment comprises two hinges (23) that are placed at the edge of the body (17) and the front panel (12). It follows the design of the previous embodiment disclosed in example 2. While the difference is the connection between the front panel (12) and the body (17). This embodiment allows the cover to stay in one piece and thus avoiding an accidently missing part.

EXAMPLE 3

Fig.7-8 show one preferred embodiment of the third version of present invention. The cover comprises: - a body suitable for embracing the smartphone at four edges;

- a front panel suitable for fully covering the touchscreen, com prising;

• two user interaction points on the panel, which comprises an exposed electrically conductive m etal;

• two contact points on the front panel, said contact point com prising an exposed electrically coiled conductor;

• two connection electrically linking the electrically conductive m etal of the user interaction point and the electrically coiled conductor of the contact point ;

wherein the contact point is positioned at the side of the front panel that faces the touchscreen , and wherein said front panel is adapted for being detachably connectable to the body.

The front panel ( 18) comprises two user interaction point (2) on the panel, two contact point (4) on the front panel, two connections (5) electrically linking said user interaction point (2) and said contact point (4) in pair, specifically the electrically conductive elem ent on both. Such that an electric circuit is established.

The front panel ( 18) is m ade of transparent plastic, such that it does not affect user’s sight when using the touchscreen ( 1 1 ) . Accordingly, the contact point (4) is also transparent for the sam e reason . The front panel ( 18) comprises two layers, wherein the contact point (4) is positioned on the layer (20) that is closest to the touchscreen ( 1 1 ) when assem bled on an electronic device (6) . An extra layer (21 ) is shielding the front panel from , for instance, scratch and wear.

Said user interaction point (2) , said contact point (4) and said connection (5) are grouped. The front panel comprises two of such group. Said group is positioned close to the edge of the front panel ( 18) . Such that they do not affect user’s sight when using the touchscreen . The front panel ( 18) , and the contact point (4) are flat, such that when assembled on an electronic device, a rugged surface is avoided.

The body ( 19) is suitable for embracing the smartphone at four edges. The body ( 19) comprises two openings (22) suitable for hosting the user interaction point (2) .

Said body ( 19) and said front panel ( 18) are adapted to be fixedly connected when assembled together, with m echanical and/or m agnetic force in said openings (22) . When assembled, the electronic device (6) is in between the front panel ( 18) and the body ( 19) , with the touchscreen ( 1 1 ) facing the front panel ( 18) . When not desired, said front panel ( 18) is detachable from said body ( 19) and the body could serve as a normal phone cover.

The user interaction point (2) , the connection (5) and the contact point (4) are following the same design described in example 1 and 2. Sim ilar to exam ple 1 and

2, the front panel ( 18) and the body ( 19) are light, thin and with enough stiffness to protect the smartphone. Sim ilarly, when assem bled, the cover is used in the sam e approach as described in example 1 and 2. Present embodiment com prises openings on the edges of the body ( 19) , for volume button , on/off button and the passage of charging cable, headset cable, data transm ission cable. The shape and dim ensions are matched to the designated smartphone.

Using the examples to conclude the advantages of present invention , it i) assists a touch interaction at at least one virtual button on a touchscreen ; ii) transfers physical touch to the touchscreen thus easy to use and assemble; iii) does not increase the dim ension and weight significantly; iv) offers protection to the electronic device; v) is m ultifunctional as both a touch assistant and base cover; vi) com es with sim ple design and low manufacturing cost; vii) offers m ultiple choices for a range of preferences.