TWI793881B - Input interface device - Google Patents

Abstract

An input interface device includes a controller, a plurality of keys, a first grapheme layer and a second grapheme layer. Each key includes an insulation layer, a grapheme aerogel layer, a pressure sensor, a first electrode and a second electrode. The grapheme aerogel layer is disposed below the insulation layer, and is used to store an ionized carrier. The pressure sensor is disposed below the grapheme aerogel layer and coupled to the controller, and is used to detect a press. The first electrode receives a plurality of first charges from the ionized carrier, and the second electrode receives a plurality of second charges from the ionized carrier. The first charges and the second charges are opposite in polarity. The first grapheme layer is coupled to the first electrode of each key and is used to store the first charges. The second grapheme layer is coupled to the second electrode of each key and is used to store the second charges.

Description

input interface device

The present invention relates to an input interface, in particular to an input interface device using graphene airgel.

A computer keyboard is a device for inputting data in a computer system. A traditional computer keyboard consists of scissors feet and keycaps. As the height of the keycap required by the notebook is getting lower and lower, the scissor foot and the keycap will often vibrate at high frequency due to the high output wattage of the speaker, resulting in noise. In addition, traditional computer keyboards may have holes. If the shielding design is not handled well, the high-frequency noise of the computer keyboard will leak out and cause noise received by the adjacent antenna, resulting in RF electromagnetic compatibility (EMC) problems .

An embodiment of the present invention provides an input interface device, including a controller, a plurality of buttons, a first graphene layer and a second graphene layer. Each button includes an insulating layer, a graphene airgel layer, a pressure detector, a first electrode and a second electrode. The graphene airgel layer is arranged under the first insulating layer and has a plurality of holes for storing ionized carriers. The pressure detector is arranged under the graphene airgel layer and coupled to the controller to detect pressing. The first electrode is in contact with the graphene airgel layer for receiving a plurality of first charges from the ionization carrier. The second electrode is in contact with the graphene airgel layer for receiving a plurality of second charges from the ionization carrier. The polarities of the first charge and the second charge are opposite. The first graphene layer is coupled to the first electrode of each button for storing a plurality of first charges. The second graphene layer is coupled to the first of each button The two electrodes are used for storing a plurality of second electric charges.

1: Button configuration

10: Keyboard center

2: Input interface device

20: Controller

21: button

213: Graphene airgel layer

215,217: electrode

219: Pressure detector

22, 24, 212: insulating layer

23,25: graphene layer

26: Processor

300: Operation method

S302 to S314: Steps

FIG. 1 is a schematic diagram of a key layout of an input interface device in an embodiment of the present invention.

FIG. 2 is a block diagram of an input interface device in an embodiment of the present invention.

Fig. 3 is a flow chart of the operation method of the input interface device in Fig. 2.

FIG. 1 is a schematic diagram of a key arrangement 1 of an input interface device in an embodiment of the present invention. The input interface device can be applied to a computer system, and can include a plurality of keys, for example, 80 keys, respectively corresponding to the positions of keys on a traditional keyboard. Each key represents a number, symbol and/or function, and the position of each key can be represented by coordinates (X, Y). For example, Figure 1 shows that the keyboard center 10 is at the coordinate (0, 0), the key T is set at the coordinate (-1, 1), the key Y is set at the coordinate (1, 1), and the key G is set at the coordinate (-1, - 1), button H is set at coordinates (1, -1), and other buttons are set at corresponding positions. FIG. 1 only shows a specific key arrangement 1 , and the input interface device can also adopt other kinds of key arrangements or coordinate systems. Each key in the input interface device contains grapheme aerogel. Graphene airgel is an ultra-light porous material, which can have a 3-dimensional rectangular structure to form a predetermined thickness, such as 2 mm, to replace the scissor feet of traditional keyboard keys, thereby simplifying and reducing the keyboard structure. In addition, since the graphene airgel has good stretching, compression and bending elasticity, the input interface device can reduce the abnormal sound produced by the resonance of the keyboard keys and the high-frequency audio of the speaker. Graphene airgel is conductive and can be grounded to shield the keyboard signal, so as to provide anti-noise function and prevent the noise of the computer system caused by the hole in the keyboard from being received by the antenna of the computer system. In addition, the graphene airgel can store ionized carriers, which can generate positive and negative charges with each press, and the input interface device can store positive and negative charges for real-time clock (real-time clock, RTC) circuit use.

The input interface device can have two types of input modes, such as a keyboard mode and a tablet mode. When switching to the keyboard mode, the input interface device can determine the number, symbol or function of the key according to the corresponding position of the pressed key. When switching to the tablet mode, the input interface device can determine handwritten numbers, symbols or functions through the corresponding position of finger touch or stylus pressure.

FIG. 2 is a block diagram of an input interface device 2 in an embodiment of the present invention. The input interface device 2 includes a controller 20 , buttons 21 , an insulating layer 22 , a graphene layer 23 , an insulating layer 24 , a graphene layer 25 and a processor 26 . The button 21 includes an insulating layer 212 , a graphene airgel layer 213 , an electrode 215 , an electrode 217 , and a pressure detector 219 . The graphene airgel layer 213 is disposed under the insulating layer 212 . The pressure detector 219 is disposed under the graphene airgel layer 213 and coupled to the controller 20 and the processor 26 . The electrode 215 and the electrode 217 contact the graphene airgel layer 213 and are coupled to the graphene layer 23 and the graphene layer 25 respectively. The insulating layer 22 can be disposed between the electrode 215 , the electrode 217 , the pressure detector 219 and the graphene layer 23 , and the insulating layer 24 can be disposed between the graphene layer 23 and the graphene layer 25 . Although the input interface device 2 only shows one button 21 , actually the input interface device 2 includes a plurality of buttons, and its structure, connection and operation method are the same as those of the button 21 .

The insulating layer 22 can be polyurethane (PU), and numbers, symbols and/or functions represented by the keys 21 can be printed on its surface. The graphene airgel layer 213 has a plurality of holes for storing ionized carriers. In some embodiments, the ionizing carrier can be an ionizing gas, such as hydrogen. In some other embodiments, the ionizing carrier can be an ionizing liquid, such as a germanium ion solution. When the button 21 is pressed, the ionization carrier can undergo electron ionization through the piezoelectric effect (piezoelectric effect). The electrode 215 may receive a plurality of first charges from ionized carriers, and the graphene layer 23 may store a plurality of first charges. Similarly, electrode 217 can receive a plurality of second charges from ionized carriers, and graphene layer 25 can store a plurality of second charges. The polarities of the plurality of first charges and the plurality of second charges are opposite. For example, the first charge can be a negative charge, the second charge can be a positive charge, the electrode 215 can receive multiple negative charges from the ionized carrier, the graphene layer 23 can store multiple negative charges, and the electrode 217 can receive multiple negative charges from the ionized carrier. positive charge, the graphene layer 25 can store multiple positive charges. The negative charge in the graphene layer 23 and the positive charge in the graphene layer 25 can cause a voltage difference of 3V. When the voltage is sufficient, the graphene layer 23 and the graphene layer 25 can supply power to the RTC circuit. When the voltage is insufficient, the computer system can provide a warning message, and the system battery supplies power to the RTC circuit until the voltage is sufficient again. The insulating layer 22 can be a polymer, and is used to isolate the electrode 215 , the electrode 217 , and the pressure detector 219 from the graphene layer 23 . The insulating layer 24 can be a polymer to isolate the graphene layer 23 and the graphene layer 25 .

The pressure detector 219 can be made of piezoelectric material, piezoresistive material, piezo-capacitive material or piezo-inductive material for detecting pressing. When the pressure detector 219 is made of piezoelectric material, the pressure detector 219 can change voltage when being pressed, and the controller 20 or processor 26 can determine whether a press is detected based on the voltage change. When the pressure detector 219 is made of a piezoresistive material, the pressure detector 219 can change resistance when pressed, and the controller 20 or processor 26 can determine whether a press is detected based on the change in resistance. When the pressure detector 219 is made of piezocapacitive material, the pressure detector 219 can change capacitance when being pressed, and the controller 20 or processor 26 can determine whether a press is detected based on the change in capacitance. When the pressure detector 219 is made of piezo-inductive material, the pressure detector 219 can change inductance when being pressed, and the controller 20 or processor 26 can determine whether a press is detected based on the change in inductance. The controller 20 can control keyboard input, and can include a look-up table to record the corresponding position of each key of the input interface device 2 and its number, symbol or function, and the corresponding position can be represented by coordinates (X, Y). If the pressure detector 219 of the button 21 detects a press, the controller 20 can use a lookup table to determine the button number, symbol or function according to the corresponding position of the button 21, and return the button number, symbol or function to the computer system. The processor 26 can control the handwriting input. When the fingers or the stylus move to generate lines, the respective pressure detectors of a plurality of keys can detect the pressing, and the processor 26 can The respective corresponding positions and pressing sequences of the buttons use the artificial intelligence network to identify numbers, symbols or functions, and send the numbers, symbols or functions back to the computer system. The artificial intelligence network may be a Convolutional Neural Network (CNN). The processor 26 is disposed inside or outside the input interface device. In some embodiments, the processor 26 can be integrated into the controller 20, and the controller 20 can also control the handwriting input, and use the artificial intelligence network to recognize numbers, symbols or functions according to the detected key position, and convert the numbers, The symbol or function is passed back to the computer system.

FIG. 3 is a flow chart of the operation method 300 of the input interface device 2, including steps S302 to S314, wherein steps S302 to S306 are used to judge symbols/numbers/functions according to the detected pressing position using the keyboard mode or tablet mode , steps S308 to S314 are used to provide the RTC voltage. Any reasonable technical changes or step adjustments fall within the scope of the disclosure of the present invention. Steps S302 to S314 are described below: Step S302: The controller 20 judges whether to switch to the keyboard mode or the tablet mode? If you want to switch to the keyboard mode, continue to step S304; if you want to switch to the tablet mode, then continue to step S306; step S304: when the pressure detector 219 of the button 21 detects the press, the controller 20 according to the corresponding button 21 Position judgment key symbol/number/function; step S306: when the finger or stylus moves to generate lines, the respective pressure detectors 219 of the plurality of keys 21 will detect the press, and when the respective pressure detection of the plurality of keys 21 When the device 219 detects the press, the processor 26 uses the artificial intelligence network to judge the symbols/numbers/functions according to the respective corresponding positions and pressing sequences of the plurality of buttons 21; Step S308: the graphene layers 23 and 25 store charges to establish the RTC voltage ; Step S310: the controller 20 determines whether the RTC voltage is sufficient? If yes, continue to step S312; if not, continue to step S314; step S312: use graphene layers 23 and 25 to provide RTC voltage; Step S314: The RTC voltage is provided by the system battery.

In step S302, the user can set the input mode of the input interface device 2 through the software interface of the computer system, and the input mode is one of keyboard mode or tablet mode. In step S310 , the controller 20 can detect the pressure difference between the graphene layers 23 and 25 . If the voltage difference between the graphene layers 23 and 25 exceeds a predetermined voltage, such as 3V, the controller 20 determines that the RTC voltage is sufficient; if the voltage difference between the graphene layers 23 and 25 is less than a predetermined voltage, such as 3V, the controller 20 Determine that the RTC voltage is insufficient. In step S312, because the pressure difference between the graphene layers 23 and 25 is sufficient, the RTC voltage will be provided by the graphene layers 23 and 25 after the computer system is shut down; The voltage difference is insufficient, so the computer system will provide the RTC voltage from the system battery after the computer system is shut down.

The embodiment in Figure 2 and Figure 3 uses graphene airgel layer in the input interface device 2 to simplify and reduce the structure of the keyboard, reduce the abnormal sound generated by the resonance of the keyboard keys and the high-frequency audio of the speaker, and provide anti-noise function , and store the charge generated by the press for use by the RTC.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

2: Input interface device

20: Controller

21: button

213: Graphene airgel layer

215,217: electrode

219: Pressure detector

22, 24, 212: insulating layer

23,25: graphene layer

26: Processor

Claims (7)

An input interface device, comprising: a controller; a plurality of keys, each key comprising; a first insulating layer; a graphene airgel layer, arranged under the first insulating layer, with a plurality of holes, for To store an ionization carrier; and a pressure detector, arranged under the graphene airgel layer, coupled to the controller, for detecting a press; a first electrode, contacting the graphene airgel a gel layer for receiving a plurality of first charges from the ionization carrier; and a second electrode contacting the graphene airgel layer for receiving a plurality of second charges from the ionization carrier, the plurality of The polarities of the first charge and the plurality of second charges are opposite; a first graphene layer, coupled to the first electrode of each key, for storing the plurality of first charges; and a second graphene layer layer, coupled to the second electrode of each key, for storing the plurality of second charges. The input interface device as described in claim 1, further comprising: a second insulating layer disposed between the first electrode and the second electrode and the first graphene layer; and a third insulating layer disposed between Between the first graphene layer and the second graphene layer. The input interface device as claimed in item 1, wherein the first graphene layer and the second The graphene layer is also coupled to a real-time clock (RTC) system for providing power to the real-time clock system. The input interface device as described in claim 1, wherein each key is arranged at a corresponding position, and when the pressure detector of the each key detects a press, the controller according to the pressure of each key The corresponding position determines a key symbol. The input interface device as described in claim 1, wherein each button is arranged at a corresponding position, and when the respective pressure detectors of the plurality of buttons of the plurality of buttons detect pressing, a processor according to the multiple The respective corresponding positions of the buttons are identified by an artificial intelligence network to identify a symbol. The input interface device as claimed in claim 1, wherein the ionized carrier is an ionized gas. The input interface device as claimed in claim 1, wherein the ionized carrier is an ionized liquid.

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