EP3245575A1 - Clavier à effleurement, enveloppe et terminal mobile avec un tel clavier à effleurement et station de charge pour un terminal mobile - Google Patents

Clavier à effleurement, enveloppe et terminal mobile avec un tel clavier à effleurement et station de charge pour un terminal mobile

Info

Publication number
EP3245575A1
EP3245575A1 EP16705726.4A EP16705726A EP3245575A1 EP 3245575 A1 EP3245575 A1 EP 3245575A1 EP 16705726 A EP16705726 A EP 16705726A EP 3245575 A1 EP3245575 A1 EP 3245575A1
Authority
EP
European Patent Office
Prior art keywords
keyboard
touch screen
mobile terminal
operating
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16705726.4A
Other languages
German (de)
English (en)
Inventor
Harald Obereder
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Emporia Telecom & Co KG GmbH
Original Assignee
Emporia Telecom & Co KG GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Emporia Telecom & Co KG GmbH filed Critical Emporia Telecom & Co KG GmbH
Publication of EP3245575A1 publication Critical patent/EP3245575A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1632—External expansion units, e.g. docking stations
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1662—Details related to the integrated keyboard
    • G06F1/1669—Detachable keyboards
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/039—Accessories therefor, e.g. mouse pads
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/039—Accessories therefor, e.g. mouse pads
    • G06F3/0393—Accessories for touch pads or touch screens, e.g. mechanical guides added to touch screens for drawing straight lines, hard keys overlaying touch screens or touch pads
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • G06F3/04886—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
    • G06F2200/16—Indexing scheme relating to G06F1/16 - G06F1/18
    • G06F2200/163—Indexing scheme relating to constructional details of the computer
    • G06F2200/1633—Protecting arrangement for the entire housing of the computer
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/048—Indexing scheme relating to G06F3/048
    • G06F2203/04809—Textured surface identifying touch areas, e.g. overlay structure for a virtual keyboard

Definitions

  • the invention relates to a membrane keypad for operating a capacitive touchscreen, comprising a plurality of operating elements, which have an operating side for actuation by a user and a delivery side for attachment to a touch screen, and to Operation of the touch screen from a starting position toward the touch screen are movable, the controls comprise an electrically conductive conductive layer.
  • the invention further relates to a case for an electronic mobile device comprising a keyboard.
  • the invention further relates to a method for operating a capacitive touch screen, wherein in a first step, an electrically conductive conductive layer of a keyboard is arranged electrically spaced from a touch screen.
  • Capacitive touchscreens are installed in modern devices as control and output elements. The actuation of such a touchscreen takes place via the change in the capacitance measured at at least one electrode of the touchscreen, when it comes into contact with an electrically conductive element, for example a finger.
  • US 2010/0238119 A1 discloses a flexible keyboard which can be arranged on the surface of a touch screen of a mobile telephone (smartphone).
  • the keyboard is a panel of flexible or partially flexible material in which individual keys are formed.
  • the keys have sufficient electrically conductive material so that an electrical connection between a finger and the touch screen can be made by pressing the corresponding key.
  • a finger is electrically connected to the touch screen, so that the electrical capacitance of the finger rests against the surface of the touch screen and triggers an actuation of the touch screen.
  • CONFIRMATION COPY US Pat. No. 8,325,150 B1 discloses a further keyboard which can be placed on a mobile telephone like a touchscreen.
  • the individual keys in this case have openings, so that a finger of a user can come into direct contact with the touch screen, or the keys are provided with an electrical conductor, so that an electrical connection between the finger and the touch screen can be made when pressing the corresponding button ,
  • This keyboard can be provided with an RFiD device, a Bluetooth device or electrical contacts so that the mobile phone can automatically recognize the keyboard.
  • US 2011/0241990 A1, US Pat. No. 8,206,047 B1, US 2011/0181514 A1 and US 2002/0054030 A1 each disclose keyboards for mobile phones which can be placed on a touchscreen.
  • the individual keys in this case have holes, so that the fingers can come into contact with the respective touch screen, or are made of a sufficiently thin, electrically insulating plastic material, such.
  • Polyethylene terephthalate (PET) is formed so that when pressing one of the keys, the respective finger can be brought sufficiently close to the touch screen.
  • PET Polyethylene terephthalate
  • the touch screen can detect the change in capacitance caused by the finger and determine a corresponding actuation of the respective key.
  • Keyboards of this type are basically similar to conventional keyboards constructed and have several controls, especially buttons. These are placed over a corresponding touchscreen, which, for example, displays a keyboard corresponding to the virtual keyboard. On the operator side of the keyboard usually the individual keys are labeled to facilitate working with the keyboard. In the initial state, the keyboard is placed on the touch screen so that no electrically conductive part of the keyboard touches the touch screen.
  • the known in the art keyboards therefore have the disadvantage that they can be operated only with the naked finger. An operation with a glove or a hand prosthesis is not possible because the necessary for the operation of the touch screen coupling of the body of the user outgoing electric field is prevented with the touch screen. A similar problem occurs when the user's fingers are particularly wet or particularly dry.
  • US 2011/0267274 A1 shows a keyboard which can be used on a touch screen of a mobile phone. With the keyboard, the user should be given a corresponding tactile sensation when pressing a button.
  • a keyboard is formed from a base plate having a plurality of openings.
  • An elastic film is applied to the base plate. Each portion of the elastic film that extends over an opening of the base plate forms a key.
  • the elastic film is electrically conductive.
  • Such an electrically conductive material may be PVC (polyvinyl chloride), whose electrical resistance should be similar to the electrical resistance of a human finger.
  • US 2011/0006992 A1 discloses a pivotable keyboard for mobile phones, wherein the pivotable keyboard is preferably connected by means of a flexible printed circuit board with the housing of the mobile phone.
  • a corresponding sensor is provided to detect whether the pivoting keyboard rests on the touch screen.
  • This sensor can be a proximity sensor or magnetic sensor, with which the presence of magnets located in the keyboard is detected. This sensor can automatically switch between a mode in which the keyboard rests on the touch screen and a mode in which the keyboard is removed from the touch screen.
  • electrically conductive inks containing electrically conductive particles, such as carbon particles or silver-coated copper particles.
  • electrically conductive particles such as carbon particles or silver-coated copper particles.
  • a membrane keypad according to the invention for operating a capacitive touch screen comprises a plurality of operating elements, which have an operating side for actuation by a user and a delivery side for engagement with a touch screen and are movable for operation of the touch screen from an initial position towards the touch screen.
  • This keyboard is characterized in that the operating elements have an electrically conductive conductive layer.
  • the keyboard is designed as a membrane keyboard.
  • Membrane keyboards are characterized by the fact that the keyboard, together with the individual operating elements, consists of a special sequence of layers, the individual operating elements being formed by area regions of the layers.
  • the Layers form a film-like basic body, which represents the main component of the membrane keyboard.
  • Such a keyboard has, for example, the advantages that it is cheap and easy to manufacture and resistant to external influences such as. Dust or water.
  • three different mechanisms are known from the prior art with which a user's finger can interact with a touchscreen by means of a control element of a keyboard. There may be an opening in the control, so the finger comes into direct contact with the touch screen.
  • the operating element may be formed of such a thin, electrically insulating plastic layer, so that the finger can reach sufficiently close to the surface of the touch screen, and the touch screen can detect the capacity of the finger.
  • an electrically conductive element may be provided, so that an electrical contact between the user's finger and the surface of the touch screen by means of the electrically conductive element can be produced.
  • the inventors of the present invention have recognized that by providing an electrically conductive layer on a control alone, a capacitance change between the home position of the control and a position where the control is pressed against a touch screen is sufficiently large to accommodate conventional capacitive touch screens to be recorded. As a result, it is not necessary that an electrically conductive connection between the touch screen and the finger of a user is made.
  • the operating element can also be operated with the glove or hand prosthesis on.
  • An insulating layer is disposed on the operating side facing the conductive layer.
  • the electrical influences of a user on the respective control element are kept low and substantially the same capacitance change is caused when operating a control element, irrespective of whether the control element has an insulating body, an electrically conductive body, an electrically charged one Body and / or a wet body is pressed.
  • a capacitance is formed between the touchscreen and the sheet-like coating which, like a plate capacitor, is approximately proportional to the area of the coating. The larger the area of the electrically conductive layer, the easier and more reliable the detection of the operation of the corresponding control element.
  • the surface of the electrically conductive conductive layer of a single control element has a size of at least 4 mm 2 , in particular at least 6 mm 2, and preferably of at least 10 mm 2 .
  • the greater the distance between the operating position and the position in which the operating element is actuated the greater the difference in capacitance between the operating position. elements and the touchscreen is in the starting position.
  • the distance is at least 0.2 mm, in particular 0.4 mm, preferably 0.6 mm and particularly preferably 0.8 mm.
  • the electrically conductive conductive layer should be well electrically conductive, since the presence of the insulating layer causes electrical charges to be discharged exclusively via the electrically conductive conductive layer.
  • an electrical connection is made between a finger actuating the keyboard and the surface of a touchscreen.
  • the electrical conduction takes place over a very short distance, which corresponds to the thickness of the keyboard.
  • a poorly electrically conductive material such as PVC.
  • Such a poorly electrically conductive material is not considered to be electrically conductive in the sense of the present invention.
  • the electrically conductive conductive layer is preferably formed such that the electrical resistance between two points of the electrically conductive layer, which are 1 cm apart, is not greater than two kohms, and more preferably no greater than 1 kohm, and preferably no greater than 500 ohms.
  • Such layers with such resistors can be easily realized by inks or thin plastic layers which are doped with electrically conductive particles.
  • Such layers can be integrated into a film structure suitable for the membrane keypad.
  • Such a membrane keyboard is capable of combining the advantages of a smartphone or similar touch screen device with the advantages of a conventional keyboard.
  • a protective layer preferably a transparent UV coating
  • This protective layer can be conductive in order to be able to connect the conductive layer to the touchscreen well electrically. Such a protective layer protects the conductive layer from damage.
  • This protective layer is preferably formed from a thinly applied UV varnish. This protective layer is preferably made so thin that its electrical resistance is negligible and it does not electrically isolate the conductive layer.
  • the conductive layer is formed by an electrically conductive ink.
  • This electrically conductive ink preferably has small ferrite particles, carbon particles and / or metal particles which have a high electrical conductivity.
  • a preferred embodiment provides that several of the operating elements, preferably in each case at least 3 or in each case at least 4 and in particular all, have a common conductive layer. As a result, an overall larger conductive layer is provided than if the individual control elements in each case own independent, independent conductive layers include. This has the advantage that the stored electrical charge is greater and therefore the operation of the touch screen works more reliably.
  • At least one color layer is arranged between the conductive layer and the insulating layer.
  • these colors shine through and thus highlight individual control elements in color. This allows the user to easily distinguish the controls from each other. Especially for children, people with poor eyesight and old people this colored marking is important.
  • the insulating layer consists essentially of PET.
  • PET is a cost effective and durable material which is therefore very well suited for use in the insulating layer.
  • the insulating layer is at least partially covered by a scratch-resistant layer, for example of hardened polymer, on the side facing the operating side. This ensures that even with regular use of the keyboard, the insulating layer is not damaged.
  • the controls are arranged in a grid. In this case, the grid, for example, only frame all the controls together, so that the individual controls touch each other or are separated by a thin gap. It is preferably provided that the grid also extends between the individual operating elements and separates them from one another.
  • a preferred embodiment provides that on the side facing the execution side of the conductive layer or the protective layer is a non-conductive grid layer, which is recessed in the areas of the controls is arranged.
  • This grid layer serves on the one hand as a spacer between the conductive layer and the touch screen to prevent unwanted continuous electrical contact between the conductive layer and the touch screen, and on the other hand as a separator between the individual controls to support a precise operation of the touch screen.
  • the grid layer is preferably made of a Fleecematerial or polyurethane.
  • a keyboard for operating a capacitive touch screen of a mobile terminal comprises a plurality of operating elements having an operation side for operation by a user and an execution side for abutment with the touch screen and for operating the touch screen from a home position toward the touch screen are movable towards.
  • This keyboard is characterized by having a detachable housing part the mobile terminal is connected.
  • a detachable housing part is, for example, a cover for a battery compartment.
  • the mobile terminal can be easily retrofitted with a keyboard according to the invention by the detachable housing part is replaced by a detachable housing part with tailed keyboard.
  • Mobile terminals are devices which can exchange data with a data server or a further terminal by means of a radio connection.
  • the radio connection is preferably a standardized (telephone) radio connection, such as e.g. GSM, UMTS or LTE.
  • the mobile terminal can also be used to transmit data with a radio connection to another standard, e.g. W-LAN, Bluetooth or NFC be formed.
  • the mobile terminal may have transceivers for sending or receiving data according to different standards.
  • the connection between the detachable housing part and the keyboard is preferably designed as a flexible joint portion.
  • the keyboard may be provided at least partially with an adhesive layer on the surface of the delivery side, such as e.g. a rubber layer, be provided.
  • This adhesive layer prevents the keyboard from slipping when it rests on the touchscreen.
  • the adhesive layer is, for example, arranged on the entire area with which the keyboard rests on the touch screen. It can also be provided only at an edge region of the keyboard. If the mobile terminal has a frame which forms a non-touch-sensitive surface adjacent to the touch screen and approximately in the plane of the touchscreen, then the adhesive layer is preferably provided on the keyboard in a region corresponding to this non-touch-sensitive area of the mobile terminal and on this when used as intended.
  • a keyboard for operating a capacitive touch screen of a mobile terminal comprising a plurality of operating elements having an operation side for operation by a user and an execution side for abutment with the touch screen and operating the touch screen from an initial position towards the touch screen are movable.
  • These keyboards are characterized in that the controls of the keyboard of a cured polymer layer and in plan view are substantially rectangular in shape and have an approximately domed shape in cross-section, wherein
  • the controls have a circumferential bead and / or
  • the polymer layer is connected to a rigid grid frame.
  • the grid frame can each enclose several groups of control elements or a single grid frame can be provided. be seen, which encloses only a single group of controls. This single group preferably comprises all operating elements. If the grid frame encloses several groups of operating elements, then the groups of operating elements preferably each comprise one or two operating elements.
  • Such an approximately rectangular configuration of the controls allows a very efficient use of the surface of the keyboard of a control element, wherein the individual controls can be arranged close to each other with close proximity.
  • the controls in plan view are usually circular. Although a circular design of controls is easy to manufacture as a membrane keyboard and reliable in operation, but does not allow such a dense arrangement of controls.
  • the area of each circular control element is smaller than the surface of a rectangular control element according to the invention.
  • the grid frame is formed of a fiber reinforced plastic material.
  • a keyboard for operating a capacitive touch screen of a mobile terminal comprising a plurality of operating elements having an operation side for operation by a user and an execution side for abutment with the touch screen and operating the touch screen from a home position towards the touch screen are movable.
  • This keyboard is characterized in that the operating elements of the keyboard are formed from a hardened polymer layer and have an approximately domed shape in cross-section, wherein on the side facing the AusSteseite a non-conductive grid layer is provided, which in the areas of the controls is omitted. This non-conductive grid layer, the controls are held in the starting position at a distance from the touch screen.
  • This nonconductive grid layer is advantageous, in particular in connection with the above-described aspect of the operating elements with an electrically conductive conductive layer, since an electrical connection between the touchscreen and the substrate is achieved by means of the grid layer.
  • the operating elements are reliably prevented and, in addition, the distance between the operating elements in the starting position and the touchscreen is increased, thereby increasing the difference in capacitance between the starting position and the operating position of the operating elements at which they rest on the touchscreen.
  • the keyboard preferably has at least one magnet.
  • the magnet can on the one hand for fixing the keyboard to the mobile terminal as well as for detecting the keyboard by the mobile terminal by means of a magnetic sensor, such. a Hall sensor, serve.
  • the keyboard may also include a plurality of magnets, which are preferably arranged on the hand area of the keyboard.
  • a mobile terminal such as e.g. a mobile phone, in particular a smartphone, provided with a touch screen, which is characterized in that it has a keyboard according to one or more of the aspects discussed above.
  • a mobile terminal such as e.g. a mobile phone and in particular a smartphone with a touch screen, a housing, an accumulator and a speaker, wherein the housing electrical charging contacts for charging the battery and at least one speaker opening are provided.
  • the speaker is located in the housing adjacent to the speaker opening.
  • This mobile terminals is characterized in that the charging contacts and the speaker opening are arranged adjacent to each other on the housing.
  • the mobile terminal preferably has a sensor for detecting whether the keyboard rests on the touch screen.
  • the sensor may be a magnetic sensor, e.g. a Hall sensor, a proximity sensor or a photosensitive sensor.
  • the mobile terminal preferably has, adjacent to the touch screen, two rectilinear projecting ledges which are particularly spaced apart such that the keyboard fits with little clearance therebetween.
  • these strips serve to protect the touchscreen, because the mobile device lies on the side of the touch screen on a level surface, then stand only these strips with the planar surface in contact.
  • the strips are used to fix the position of the keyboard when it rests on the touch screen.
  • Another aspect of the invention is the provision of a charging station for such a mobile terminal, wherein the charging station comprises electrical contact elements for contacting charging contacts of the mobile terminal and forms a hollow body having an opening which is aligned with a speaker opening of the mobile terminal, if mobile terminal in the charging station for charging the same is arranged.
  • the invention relates to a casing for an electronic mobile device, for example a smartphone, with a keyboard according to one of the aspects explained above.
  • Keyboards according to the invention are eminently suitable for use in cases for smartphones or similar devices. Cases of this type fulfill a variety of functions, in particular, they should protect the respective device from external influences.
  • the keyboard adds another feature, providing a physical keyboard.
  • a particularly preferred embodiment provides that the keyboard is designed so that it can be folded away so that the user can simply and quickly place the keyboard on the touchscreen or remove it from the touchscreen in order to operate the touchscreen conventionally only with the fingers.
  • the invention relates to a method of the type mentioned above for operating a capacitive touch screen, wherein in a second step, the conductive layer by pressure, eg. A finger, on a, on the side facing away from the touch screen angeord- Neten, electrically insulating insulating layer is electrically brought into contact with the touch screen, whereby a virtual control panel is operated on the touch screen.
  • FIG. 1 shows a smartphone with a casing, which is integrated with a keyboard according to the invention
  • FIG. 2 shows a cross section through the keyboard from FIG. 1
  • FIG. 3 shows a smartphone with a further embodiment of the envelope with a keyboard according to the invention in a perspective view;
  • FIG. 4 shows a smartphone with a further embodiment of the casing in a plan view
  • Figure 5a-5f another smartphone with a keyboard according to the invention in plan view from above and from below and four-page views, each showing one of the four front sides of the smartphone, and
  • Figures 6a-6d the keyboard of the smartphone of Figure 5a-5f in plan view from above, in the side view, in plan view from below and in cross section along the line A-A in Figure 6a.
  • a keyboard 1 is arranged in a casing 2 via a mobile terminal 3, which in the present embodiment is a smartphone.
  • the shell 2 comprises a front-side planar element 4 and a rear-side planar element 5, which abut against the front or rear side of the smartphone 3 and are connected to one another via a hinge-like connecting element 6.
  • the keyboard 1 is integrated in the front-side element 4.
  • the front-side element 4 furthermore has a recess 7, which serves to provide a field of view on a touch screen 23 arranged on the front side of the smartphone 3.
  • the recess 7 can also be covered by means of a transparent material, for which, for example, a transparent polymer is suitable.
  • the touch screen extends substantially over the entire front surface of the smartphone 3, i. also under the keyboard 1.
  • the keyboard 1 comprises a plurality of spaced apart by webs 8, grid-shaped arranged controls 9 in the form of keys.
  • these operating elements 9 which can be operated by a user
  • the touch screen 23 is operated.
  • the touch screen 23 displays a virtual keyboard corresponding to the keyboard 1 when the keys are transparent.
  • touch-sensitive areas are activated on the touch screen, whose arrangement correspond to the keys of the keyboard 1.
  • feedback on the user input for example a text written using the keyboard 1 can be displayed via the area of the touchscreen 23 visible via the recess 7.
  • the front-side element 4 of the shell 2, together with the keyboard 1 integrated therein, can be laterally folded away by means of the hinge-like connecting element 6, so as to expose the entire touchscreen for a conventional finger operation of the device.
  • Fig. 2 is a cross section through a keyboard according to the invention 1, which is designed as a membrane keyboard, not shown to scale, comprising three controls 9, which are separated by web-like areas 8.
  • the keyboard 1 has an operating side 10 and a delivery side 11.
  • the operating side 10 faces the user and the delivery side 11 faces the touchscreen 23 to be operated.
  • the topmost layer 12 seen from the operating side is a scratch-resistant layer, for example of hardened polymer, which protects the underlying insulating layer 13 from physical damage ,
  • the insulating layer 13 has the task of the operating side 10 of the To disconnect output side 11 electrically.
  • Below the insulating layer 13 at least one color layer 14 is arranged, which serves the color coding of the individual controls 9 / serve.
  • the electrically conductive conductive layer 15 is arranged, which is made, for example, by applying an electrically conductive ink.
  • the conductive layer 15 is covered in the direction of the delivery side 11 with a protective layer 16 which, for example, is a transparent UV coating, in order to protect the conductive layer 15.
  • the conductive layer 15 covered with the protective layer 16 has an electrical resistance between two points, which are 1 cm apart, of about 500 ohms. This resistance was measured on the exposed top of the protective layer 16.
  • the last layer is the grid layer 17, which has recesses 18 in the area of the operating elements 9.
  • the raster layer 17 is preferably made of a material having adhesive properties, e.g. However, it may be made of other material, such as rubber. be formed of a fleece material.
  • the present keyboard By providing the insulating layer 13, it is possible for the present keyboard to be operated with any body such as a finger, a finger accompanied by a glove or an electrically charged bar.
  • the conductive layer 15 is electrically separated from the actuating body, so that always a clear operation is achieved, regardless of the formation of the actuating body. Without such an insulating layer 13, for example, when operating with an electrically charged body, a false trip, in particular multiple tripping, would be caused.
  • the keyboard 1 rests on a touch screen with the execution side, ie the raster layer 17 is located directly on the touch screen. In this state, the touch screen is not operated.
  • the conductive layer 15 forms, together with the touch screen, an electrical capacitance similar to a plate capacitor. If now an operation of the touch screen 23 take place, the user presses on the operating page 10 on one or more of the controls 9. Thus, the control element 9 in the direction of actuation 19, which is shown in Figure 2 with an arrow, moved closer to the touch screen introduced. As soon as the electrical coupling of the conductive layer 15 with at least one electrode of the touch screen is strong enough, the capacitance measured at the electrode changes, which is recognized as operation of the touch screen. In this case, it is not necessary for the respective operating element 9 to come into contact with the touchscreen 23. The capacitance change caused by the difference in distance between the conductive layer 15 and the touch screen 23 is measured.
  • FIG. 3 a second embodiment of a shell 2 comprising a keyboard 1 according to the invention, is shown, wherein like reference numerals designate like parts in Fig. 1.
  • This embodiment differs from the embodiment shown in Fig. 1 in that the front-side element 4 in the upper area 20 of the smartphone 3 is recessed to make part of the touch screen 23 of the smartphone 3 accessible to the user. Further, the hinge-like connecting element 6 is not arranged on the longer side of the smartphone 3, but on the shorter side.
  • a third embodiment of a shell 2 comprising a keyboard 1 according to the invention is shown, wherein like reference numerals designate like parts in Fig. 1.
  • This embodiment differs from the embodiment shown in Fig. 1 in that in the illustrated front side element 4 four magnets 21 and a magnet 22 are arranged.
  • the magnets 21 are used to attach the case 2 to the smartphone 3.
  • the presence of a magnet 22 can be detected by the smartphone 3, for example by means of a Hall sensor, not shown. This makes it possible for the smartphone 3, in the presence of the envelope 2, to automatically execute a program which provides a virtual keyboard corresponding to the keyboard 1 on the touchscreen.
  • FIG. 5a-6d Another embodiment is shown in Figures 5a-6d.
  • This embodiment comprises as a mobile terminal 3 turn a smartphone to which the keyboard 1 is pivotally mounted.
  • the smartphone 3 has a front side 24, in which a touch screen 23 is provided, which extends substantially over a large part of the front side 24 of the smartphone 3.
  • a touch screen 23 is provided, which extends substantially over a large part of the front side 24 of the smartphone 3.
  • this smartphone 3 there are an upper edge 25 and a lower edge 26 which are defined on the one hand by the arrangement of the keyboard 1 and on the other hand by on the touch screen 23 displayable screens that may contain characters that make sense to a user, if the smartphone is aligned with the upper edge 25 upwards.
  • it is in principle possible to rotate the screen display in particular to rotate 90 °, so that the screen displays are displayed in landscape format on the touch screen 23, but in the portrait view, the upper edge 25 and the lower edge 26 are fixed in the following embodiment.
  • the smartphone 3 has an upper end side 27 (FIG. 5f), a lower end side 28 (FIG. 5e), a right longitudinal end side (FIG. 5d), a left longitudinal end side 30 (FIG. 5c) and a rear side 31 (FIG. 5b).
  • an on / off button 32 On the upper end face 27, an on / off button 32, a multi-function plug 33 and a plug 34 is provided for connecting headphones or speakers.
  • the multi-function plug 33 is formed in the following embodiment as a micro-USB connector and serves both as a connector for connecting a charging cable and a data cable.
  • a toggle switch 35 is provided, which is mainly used for adjusting the volume of the smartphone 3.
  • two pushbuttons 36, 37 are arranged.
  • the upper pushbutton 36 is preferably used to actuate a camera and the lower pushbutton 37 to actuate a light source.
  • the rear side 31 is largely covered by a detachable cover 38, which extends in the lower edge 26 upwards in the area above the detachable cover 38 is provided on the back 31 by a rigid cover 29.
  • a transparent window 40 In the area of the rigid cover 39 is a transparent window 40, behind which a light source 41 and a camera 42 are arranged.
  • a white light emitting diode As the light source 41, a white light emitting diode is used.
  • a circular pushbutton 43 is arranged, which can be used as an emergency call button.
  • both the accumulator and the slot of the SIM card are accessible and it can be used a SIM card and / or the accumulator to be replaced.
  • two electrical contact elements 44 are located on the rear side 31, which can be brought into contact with corresponding electrical contacts of a charging station in order to charge the accumulator of the smartphone 3. Furthermore, in the region of the lower edge 26, an opening 45 in the housing 46 of the smartphone 3 is formed. In the smartphone 3, a loudspeaker is arranged adjacent to the opening 45, so that the sound waves generated by the loudspeaker can pass unhindered through the opening 45. This opening is therefore also referred to below as the speaker opening 45.
  • the present embodiment has a single speaker opening 45. Of course, several speaker openings can be provided.
  • the speaker opening 45 is disposed adjacent to the electrical contact elements 44, so that when inserting the smartphone into a charging station, both the electrical contact elements 44 can come into contact with corresponding mating contacts and the speaker opening 45 can open into the cavity of the charging station, so that the charging station acts as a passive sound amplifier.
  • the speaker opening 45 does not have to be arranged directly adjacent to the contact elements 44.
  • the adjacent arrangement of the loudspeaker opening 45 and the contact elements 44 means that they are at the same edge are arranged rich of the mobile terminal, so that when inserting the mobile terminal in a charging station both the speaker opening 45 and the contact elements 44 are in contact with the charging station.
  • a slot (not shown) is introduced, which is accessible from the inside, when the detachable cover 38 is removed from the smartphone 3.
  • a pin tab 47 can be inserted from the inside out.
  • the pin tab 47 is secured on the inside of the housing 46 with a corresponding latch.
  • the pen tab 47 serves to hold a pen 48 for operating the touch screen 23.
  • a user of the smart phone 3 who does not need a pen to operate the touch screen 43 can easily remove the pen tab 47 by removing the detachable cover 38 from the smartphone 3 and the Pin tab 47 is pulled inward through the slot.
  • three pushbuttons are arranged in the region of the lower edge 26 adjacent to the touchscreen 23.
  • the three pushbuttons are arranged in a row, the middle pushbutton being the so-called “home key”, which may have multiple functions, in most states of the smartphone pressing the "home key” indicating a top screen display, which is often referred to as "home screen” causes.
  • the keyboard 1 with a hinge-like connecting element 6 with the detachable cover 38 is firmly connected.
  • the hinge-like connecting element 6 is welded to the detachable cover 38 and / or glued.
  • the keyboard 1 on the one hand firmly connected to the smartphone 3 and on the other hand, however, by replacing the detachable cover 38 with a removable cover that is not connected to such a keyboard, be removed from the smartphone 3, so that the smartphone a conventional smartphone without fold-away keyboard corresponds.
  • By attaching the keyboard to the removable cover 38 and conventional smartphones 3 can be easily retrofitted with such a folding keyboard.
  • the keyboard 1 has a plurality of control elements 9, Figure (6a, 6c) and is a plurality of magnets 21, 21 similar to the embodiment shown in Figure 4 provided.
  • the controls 9 formed in single and double size.
  • Simple size controls have a width of about 15 mm and a height of about 7 mm.
  • Control elements 9 in double size have a width and a height of about 15 mm.
  • the operating elements preferably have a width of at least 8 mm, preferably at least 10 mm, and in particular special at least 12 mm.
  • the height of the controls is at least 4 mm, preferably at least 6 mm and in particular at least 8 mm or at least 10 mm.
  • the keyboard 1 is designed as a membrane keyboard with a multilayer film 49, a grid layer 17 and a frame grid 50 (FIG. 6 d).
  • the film 49 has the layer structure shown in FIG. 2 comprising the uppermost layer 12, the insulating layer 13, the color layer 14, the conductive layer 15, the protective layer 16.
  • the grid layer 17 is arranged on the output side 11 of the keyboard 1 and covers the entire area of the keyboard except for the area of the operating elements 9.
  • the grid layer 17 surrounds each individual operating element 9, likewise whether it is a control element with single or double size.
  • the raster layer 17 is made of an electrically insulating material, e.g. a fleece, rubber or other plastic layer formed.
  • the entire layer structure of the keyboard can also be made transparent at least in the region of one or more operating elements.
  • the images (icons, numbers, etc.) that indicate the meaning of the respective control element are displayed on the touch screen.
  • Such a keyboard can be flexibly set for different languages and thus different fonts.
  • the frame grid 50 is located on the operating side 10 of the keyboard 1.
  • the frame grid 50 is made of a rigid material, in particular a fiber-reinforced plastic, such as e.g. a glass fiber reinforced plastic formed.
  • the frame grid 50 encloses all controls with double size and encloses each a pair of controls with a simple size (Fig. 6a).
  • the frame grid 50 gives the keyboard 1 its mechanical strength.
  • the frame grid 50 is covered with leather. However, it is also possible to use another material with a nice appearance as a cover.
  • the individual operating elements 9 are each bounded by a circumferential bead 51, which is formed in the film 49.
  • the bead 51 is a small groove formed in the film 49, which represents the edge of the operating elements 9 and serves to stiffen the operating elements 9. For rigid films 49, it is not necessary to provide a bead.
  • the frame grid 50 has, in addition to the recesses for the operating elements 9, a further recess 52, which is arranged in the region of the "home button" of the smartphone 3.
  • this recess 52 can be covered with a soft, flexible layer, such as an artificial leather , so that the "home button” is indeed covered by the keyboard, but by means of this soft layer is operable.
  • This recess, which may be covered with the soft layer, is identified by the reference numeral 52 in FIGS. 6a and 6c.
  • the smartphone 3 has on its front side 24 along the right and left longitudinal end side 29, 30 and along the upper edge 25 a slightly above the remaining front side 24 projecting web 53.
  • the smartphone 3 If the smartphone 3 is placed with the front side 24 on a flat surface, then the smartphone rests with the web 53 on the pad and not with the touch screen on the pad. This will protect the touch screen from damage. Furthermore, the distance of the sections of the web along the longitudinal end faces approximately corresponds to the width of the keyboard 1, so that the oppositely spaced webs 53 serve for positioning and fixing the keyboard 1.
  • the smartphone 3 has magnets which are arranged on the corresponding to the magnets 21 of the keyboard 1 positions in the smartphone. Using these magnets, the keyboard is fixed on the front side 24 of the smartphone 3.
  • a magnetic field sensor in particular a Hall sensor, is arranged at the location corresponding to the location of the magnet 22 of the keyboard 1.
  • the smartphone 3 may also have 31 magnets on the back, which serve to fix the keyboard 1 and interact with the magnets 21 of the keyboard 1 when the keyboard 1 is folded on the back 31 of the smartphone 3.
  • each mobile terminal which has a touchscreen is suitable for being provided with the keyboard according to the invention, with which actions can be triggered on the touchscreen.
  • the mobile terminal 3 has a control device which, with the sensor for detecting whether the keyboard 1 rests on the touchscreen 23, determines whether the keyboard 1 rests on the touchscreen 23. If the keyboard 1 is detected on the touch screen 23, then the controller switches the mobile terminal 3 in a keyboard mode. If the keyboard 1 is not present, the mobile terminal is switched to a touchscreen mode by the control device. In touchscreen mode, three conventional pushbuttons (OK / HOME / Back) are available at the bottom of the smartphone (not shown).
  • predetermined areas of the touchscreen which are each assigned to one of the operating elements 9, are switched sensitive for inputs by the operating element on the touchscreen 23.
  • Each of these areas is assigned a function that is executed when the corresponding operating element 9 is actuated. For example, this function may be entering a digit of a telephone number.
  • the area of the touch screen 23 that lies outside the keyboard 1 is used as a display device.
  • no action is taken in the exposed areas of the touch screen by touching the touch screen. In this area Thus, no actions are assigned to the touch screen. However, touching this exposed touch screen area may move or highlight displayed items.
  • An action that can also relate to elements displayed on the touchscreen can only be triggered by pressing one of the keys in keyboard mode.
  • the mobile terminal may be limited to predetermined basic functions, such as telephoning, reading and / or sending short messages.
  • the operation in keyboard mode can be kept very simple and on the other hand errors in the operation can be avoided.
  • the display of the temperature, time, date, status messages, the network, the state of charge of the battery and / or the display of a background image can be provided as basic functions.
  • the individual controls 9 and keys of the keyboard 1 are very large compared to conventional mobile phones. This also allows reliable operation of the control elements by older persons. Furthermore, the large-scale controls allow appropriate labeling with large letters and numbers that can be easily read. The large-scale controls thus offer significant practical advantages in the application. On the other hand, the large-scale controls with an integrated conductive layer 15 cause a large change in the capacity between the controls and the touch screen, which can be easily and reliably detected.
  • This keyboard thus provides the user with controls 9 which act as a mechanical key and have a fixed pressure point without the keyboard itself being directly coupled to the electrical circuits of the mobile terminal.
  • the keyboard 1 can be operated with fingers, prostheses, glove-bearing fingers, wet fingers, pins or other objects and is reliable in triggering one of the controls associated action, this being detected by a capacitive measurement by means of the touch screen 23.
  • the mobile terminal 3 is just like other conventional mobile devices with a touch screen on this operable. Switching between the touchscreen mode and the keyboard mode is done solely by folding away or placing the keyboard 1 on the touch screen 23rd
  • Both keyboard mode and touchscreen mode provide one or more top screen displays, also known as home screens.
  • a subordinate screen display is called up and displayed on the touchscreen.
  • Each subordinate screen display contains a return function, which activates the respective superordinate screen display.
  • the back function is represented by a touch control, which is a touch sensitive area of the touch screen 23 in which
  • the back function in the touch screen mode is always executable with the lower right pushbutton, and you can select this pushbutton as well as this touch screen.
  • the back-up function is represented by a control element of the keyboard 1, which is assigned a text displayed on the touchscreen, which means the word "back".
  • one of the operating elements 9, which are arranged adjacent to the exposed area of the touch screen 23, is used for this purpose.
  • keyboard mode and / or in touchscreen mode when displaying multiple functions, they are sorted by importance and the most important functions are shown above.
  • a criterion for the importance may also be the frequency with which a user has called the functions on the mobile terminal.
  • the back function and possibly a search field are shown in the top line. If an application software (app) is switched from touchscreen mode to keyboard mode during operation, the state of the application software is saved and the further operation of the application software is interrupted. In the exposed area of the touch screen 23, a screen display is displayed, which is independent of the application software. Users are then only the functions of the keyboard mode, in particular telephoning and reading or sending short messages available.
  • This method ensures that no malfunctions are performed on the mobile terminal during the telephone call and a user of the mobile terminal at any time has very easy access to the telephone function by the mobile terminal can be switched by placing the keyboard 1 on the touch screen in the keyboard mode. This also makes it easy for people to use the mobile device, even if they do not have very intense experience with computers or a smartphone.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Telephone Set Structure (AREA)
  • Push-Button Switches (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

L'invention concerne un clavier pour commander un écran tactile capacitif, comprenant plusieurs éléments de commande qui comportent un côté commande pour être actionné par un utilisateur et un côté sortie destiné à venir en contact avec un écran tactile et qui peuvent être déplacés à partir d'une position de départ en direction de l'écran tactile, les éléments de commande comprenant une couche conductrice électriquement conductrice, étant prévu qu'une couche d'isolation est disposée sur le côté faisant face au côté commande de la couche conductrice.
EP16705726.4A 2015-01-12 2016-01-12 Clavier à effleurement, enveloppe et terminal mobile avec un tel clavier à effleurement et station de charge pour un terminal mobile Withdrawn EP3245575A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015100344.9A DE102015100344A1 (de) 2015-01-12 2015-01-12 Tastatur, Hülle und mobiles Endgerät mit einer solchen Tastatur sowie Ladestation für ein mobiles Endgerät
PCT/EP2016/000037 WO2016113128A1 (fr) 2015-01-12 2016-01-12 Clavier à effleurement, enveloppe et terminal mobile avec un tel clavier à effleurement et station de charge pour un terminal mobile

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Publication Number Publication Date
EP3245575A1 true EP3245575A1 (fr) 2017-11-22

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EP16705726.4A Withdrawn EP3245575A1 (fr) 2015-01-12 2016-01-12 Clavier à effleurement, enveloppe et terminal mobile avec un tel clavier à effleurement et station de charge pour un terminal mobile

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Country Link
EP (1) EP3245575A1 (fr)
CN (1) CN107209616B (fr)
DE (1) DE102015100344A1 (fr)
WO (1) WO2016113128A1 (fr)

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Also Published As

Publication number Publication date
CN107209616A (zh) 2017-09-26
WO2016113128A1 (fr) 2016-07-21
CN107209616B (zh) 2021-05-11
DE102015100344A1 (de) 2016-07-14

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