KR20200039945A - Electronic device and method for identifying strength of depression on display based on touch input - Google Patents

Abstract

According to various embodiments, an electronic device can comprise: a sensor circuitry; and a control circuitry configured to be operatively coupled to the sensor circuitry, apply a voltage of an alternating current (AC) signal to a resistance in the sensor circuitry corresponding to a position of receiving a touch input based on the touch input acquired through the sensor circuitry, and acquire a signal for indicating the pressing strength of the touch input output based on the applied voltage of the AC signal from the sensor circuitry.

Description

ELECTRONIC DEVICE AND METHOD FOR IDENTIFYING STRENGTH OF DEPRESSION ON DISPLAY BASED ON TOUCH INPUT}

Various embodiments described below relate to an electronic device and method for identifying the strength of a depression on a display based on a touch input.

An electronic device such as a smartphone, a tablet personal computer (PC), a smart watch, etc., inputs touch for intuitive interaction between a user and the electronic device. It may include a sensor circuit (sensor circuitry) for recognizing. The electronic device may acquire information about the touch input using the sensor circuit.

The size of an electronic device has been miniaturized in order to improve portability. Sensor circuitry for identifying the strength of the depression of the touch input, for this miniaturization, can be built-in to the display of the electronic device. Therefore, a solution for processing noise acting on the sensor circuit built into the display of the electronic device may be required.

The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems that are not mentioned can be clearly understood by those skilled in the art from the following description. There will be.

An electronic device according to various embodiments is configured to receive the touch input based on sensor circuitry, operatively coupled to the sensor circuit, and based on a touch input obtained through the sensor circuit. Applying a voltage of an alternating current (AC) signal to a resistance in the sensor circuit corresponding to a position, and pressing the touch input output from the sensor circuit based on the voltage of the applied AC signal. It may include a control circuitry (configured to) configured to obtain a signal associated with the strength of (depression) from the sensor circuit.

An electronic device according to various embodiments of the present disclosure includes a display, a plurality of first electrodes that respectively form a plurality of horizontal lines, and a plurality of agents that cross the plurality of first electrodes and form a plurality of vertical lines, respectively. A sensor circuit including two electrodes and a control circuit operatively coupled to the sensor circuit may be included, and the control circuit may include remaining electrodes except for a designated electrode of at least one of the plurality of first electrodes. While sequentially providing a synchronization signal for synchronizing the operation of the display with the operation of the sensor circuit, the state of the at least one designated electrode is maintained in a first state for identifying the strength of the touch input pressing, and the In response to providing the synchronization signal to another electrode directly above the at least one designated electrode among the remaining electrodes. To, may be configured to switch the state of the at least one electrode from the first state to the second state for identifying a location of the touch input.

A method for operating an electronic device according to various embodiments of the present disclosure is based on a touch input received from the electronic device by a control circuit of the electronic device operatively coupled with a sensor circuit of the electronic device. Applying a voltage of an alternating current (AC) signal to a resistance in the sensor circuit corresponding to a receiving position, and the control circuit based on the voltage of the applied AC signal from the sensor circuit It may include an operation of acquiring a signal for indicating the strength of the depression of the outputted touch input.

In accordance with various embodiments, a display, a plurality of first electrodes each forming a plurality of horizontal lines, and a plurality of second electrodes crossing the plurality of first electrodes and forming a plurality of vertical lines, respectively A method for operating an electronic device including a sensor circuit and a control circuit operatively coupled to the sensor circuit includes: the control circuit remaining electrodes except for at least one designated electrode among the plurality of first electrodes While sequentially providing a synchronization signal for synchronizing the operation of the display with the operation of the sensor circuit, maintaining the state of the at least one designated electrode as a first state for identifying the intensity of the touch input pressing. And, the sensor circuit is another electrode directly above the at least one designated electrode among the remaining electrodes. In response to providing the synchronization signal, and may include an operation to switch the state of the at least one electrode from the first state to the second state for identifying a location of the touch input.

An electronic device and a method thereof according to various embodiments of the present disclosure apply a voltage of an alternating current (AC) signal to a resistor corresponding to a position at which a touch input is received, thereby reducing the intensity of pressing of the touch input with low noise ( low noise).

The effects obtainable in the present disclosure are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those skilled in the art from the following description. will be.

1 is a block diagram of an electronic device in a network environment that identifies the intensity of a press on a display based on a touch input, according to various embodiments.
2 is a block diagram of a display device that identifies the intensity of a press on a display based on a touch input, according to various embodiments.
3 illustrates an example of a functional configuration of an electronic device according to various embodiments.
4 illustrates an example of a sensor circuit of an electronic device according to various embodiments.
5 illustrates an example of a configuration of a sensor circuit of an electronic device according to various embodiments.
6 illustrates an example of signals caused by a sensor circuit of an electronic device according to various embodiments.
7 illustrates another example of a configuration of a sensor circuit of an electronic device according to various embodiments.
8 illustrates an example of a frequency distribution of noise included in a signal output from a sensor circuit of an electronic device according to various embodiments.
9 illustrates another example of a configuration of a sensor circuit of an electronic device according to various embodiments.
10 illustrates another example of signals caused by a sensor circuit of an electronic device according to various embodiments.
11 illustrates another example of signals caused by a sensor circuit of an electronic device according to various embodiments.
12 illustrates another example of frequency distribution of noise included in a signal output from a sensor circuit of an electronic device according to various embodiments.
13 illustrates an example of a horizontal synchronization signal provided to a sensor circuit of an electronic device according to various embodiments.
14 illustrates an example of an operation of an electronic device according to various embodiments.
15 illustrates another example of an operation of an electronic device according to various embodiments.

1 is a block diagram of an electronic device 101 in a network environment 100 according to various embodiments. Referring to FIG. 1, in the network environment 100, the electronic device 101 communicates with the electronic device 102 through the first network 198 (eg, a short-range wireless communication network), or the second network 199 It may communicate with the electronic device 104 or the server 108 through (eg, a remote wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108. According to an embodiment, the electronic device 101 includes a processor 120, a memory 130, an input device 150, an audio output device 155, a display device 160, an audio module 170, a sensor module ( 176), interface 177, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196, or antenna module 197 ). In some embodiments, at least one of the components (for example, the display device 160 or the camera module 180) may be omitted or one or more other components may be added to the electronic device 101. In some embodiments, some of these components may be implemented as one integrated circuit. For example, the sensor module 176 (eg, a fingerprint sensor, an iris sensor, or an illuminance sensor) may be implemented while being embedded in the display device 160 (eg, a display).

The processor 120, for example, executes software (eg, the program 140) to execute at least one other component (eg, hardware or software component) of the electronic device 101 connected to the processor 120. It can be controlled and can perform various data processing or operations. According to one embodiment, as at least part of data processing or computation, the processor 120 may receive instructions or data received from other components (eg, the sensor module 176 or the communication module 190) in the volatile memory 132. Loaded into, process instructions or data stored in volatile memory 132, and store result data in non-volatile memory 134. According to an embodiment, the processor 120 may include a main processor 121 (eg, a central processing unit or an application processor), and an auxiliary processor 123 (eg, a graphics processing unit, an image signal processor) that can be operated independently or together. , Sensor hub processor, or communication processor). Additionally or alternatively, the coprocessor 123 may be set to use lower power than the main processor 121, or to be specialized for a designated function. The coprocessor 123 may be implemented separately from the main processor 121 or as part of it.

 The coprocessor 123 may replace, for example, the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or the main processor 121 may be active (eg, execute an application) ) With the main processor 121 while in the state, at least one of the components of the electronic device 101 (for example, the display device 160, the sensor module 176, or the communication module 190) It can control at least some of the functions or states associated with. According to one embodiment, the coprocessor 123 (eg, image signal processor or communication processor) may be implemented as part of other functionally relevant components (eg, camera module 180 or communication module 190). have.

The memory 130 may store various data used by at least one component of the electronic device 101 (eg, the processor 120 or the sensor module 176). The data may include, for example, software (eg, the program 140) and input data or output data for commands related thereto. The memory 130 may include a volatile memory 132 or a non-volatile memory 134.

The program 140 may be stored as software in the memory 130, and may include, for example, an operating system 142, middleware 144, or an application 146.

The input device 150 may receive commands or data to be used for components (eg, the processor 120) of the electronic device 101 from outside (eg, a user) of the electronic device 101. The input device 150 may include, for example, a microphone, mouse, keyboard, or digital pen (eg, a stylus pen).

The audio output device 155 may output an audio signal to the outside of the electronic device 101. The audio output device 155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as multimedia playback or recording playback, and the receiver can be used to receive an incoming call. According to one embodiment, the receiver may be implemented separately from, or as part of, a speaker.

The display device 160 may visually provide information to the outside of the electronic device 101 (eg, a user). The display device 160 may include, for example, a display, a hologram device, or a projector and a control circuit for controlling the device. According to an embodiment, the display device 160 may include a touch circuitry configured to sense a touch, or a sensor circuit (eg, a pressure sensor) configured to measure the strength of the force generated by the touch. have.

The audio module 170 may convert sound into an electrical signal, or vice versa. According to an embodiment, the audio module 170 acquires sound through the input device 150, or an external electronic device (eg, directly or wirelessly connected to the sound output device 155 or the electronic device 101) Sound may be output through the electronic device 102 (eg, speakers or headphones).

The sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the detected state can do. According to an embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biological sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.

The interface 177 may support one or more designated protocols that can be used for the electronic device 101 to be directly or wirelessly connected to an external electronic device (eg, the electronic device 102). According to an embodiment, the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal 178 may include a connector through which the electronic device 101 can be physically connected to an external electronic device (eg, the electronic device 102). According to an embodiment, the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

The haptic module 179 may convert electrical signals into mechanical stimuli (eg, vibration or movement) or electrical stimuli that the user can perceive through tactile or motor sensations. According to one embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 180 may capture still images and videos. According to one embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 188 may manage power supplied to the electronic device 101. According to one embodiment, the power management module 388 may be implemented, for example, as at least a part of a power management integrated circuit (PMIC).

The battery 189 may supply power to at least one component of the electronic device 101. According to one embodiment, the battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.

The communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). It can support establishing and performing communication through the established communication channel. The communication module 190 operates independently of the processor 120 (eg, an application processor), and may include one or more communication processors supporting direct (eg, wired) communication or wireless communication. According to one embodiment, the communication module 190 is a wireless communication module 192 (eg, a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (eg : Local area network (LAN) communication module, or power line communication module. Corresponding communication module among these communication modules includes a first network 198 (for example, a short-range communication network such as Bluetooth, WiFi direct, or infrared data association (IrDA)) or a second network 199 (for example, a cellular network, the Internet, or It may communicate with external electronic devices through a computer network (eg, a telecommunication network such as a LAN or WAN). These various types of communication modules may be integrated into a single component (eg, a single chip), or may be implemented as a plurality of separate components (eg, multiple chips). The wireless communication module 192 uses a subscriber information (eg, an international mobile subscriber identifier (IMSI)) stored in the subscriber identification module 196 in a communication network such as the first network 198 or the second network 199. The electronic device 101 can be identified and authenticated.

The antenna module 197 may transmit a signal or power to the outside (eg, an external electronic device) or receive it from the outside. According to one embodiment, the antenna module may include a single antenna including a conductor formed on a substrate (eg, a PCB) or a radiator made of a conductive pattern. According to an embodiment, the antenna module 197 may include a plurality of antennas. In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network 198 or the second network 199, is transmitted from the plurality of antennas by, for example, the communication module 190. Can be selected. The signal or power may be transmitted or received between the communication module 190 and an external electronic device through the at least one selected antenna. According to some embodiments, other components (eg, RFIC) other than the radiator may be additionally formed as part of the antenna module 197.

At least some of the components are connected to each other through a communication method between peripheral devices (for example, a bus, a general purpose input and output (GPIO), a serial peripheral interface (SPI), or a mobile industry processor interface (MIPI)) and a signal ( Ex: command or data) can be exchanged with each other.

 According to an embodiment, commands or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199. Each of the electronic devices 102 and 104 may be the same or a different type of device from the electronic device 101. According to an embodiment, all or some of the operations performed on the electronic device 101 may be performed on one or more external devices of the external electronic devices 102, 104, or 108. For example, when the electronic device 101 needs to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device 101 instead executes the function or service itself. In addition or in addition, one or more external electronic devices may be requested to perform at least a portion of the function or the service. The one or more external electronic devices receiving the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and deliver the result of the execution to the electronic device 101. The electronic device 101 may process the result, as it is or additionally, and provide it as at least part of a response to the request. To this end, for example, cloud computing, distributed computing, or client-server computing technology This can be used.

2 is a block diagram 200 of a display device 160 according to various embodiments. Referring to FIG. 2, the display device 160 may include a display 210 and a display driver IC (DDI) 230 for controlling the display 210. The DDI 230 may include an interface module 231, a memory 233 (eg, a buffer memory), an image processing module 235, or a mapping module 237. The DDI 230 receives, for example, image data or image information including an image control signal corresponding to a command for controlling the image data from the other components of the electronic device 101 through the interface module 231. can do. For example, according to an embodiment, the image information may include a processor 120 (eg, the main processor 121 (eg, an application processor) or an auxiliary processor 123 operated independently of the function of the main processor 121 ( Example: a graphic processing device) DDI 230 may communicate with the touch circuit 250 or the sensor module 176 through the interface module 231. In addition, the DDI 230 may At least a portion of the received image information may be stored in the memory 233, for example, in units of frames.The image processing module 235 may, for example, store at least a portion of the image data as a characteristic of the image data, or Pre-processing or post-processing (eg, resolution, brightness, or resizing) may be performed based on at least the characteristics of the display 210. The mapping module 237 is pre-processed or post-processed through the image processing module 135. The video The voltage value or the current value corresponding to the data may be generated. According to an embodiment, the generation of the voltage value or the current value may include, for example, properties of pixels of the display 210 (eg, RGB stripe). Or a pentile structure), or at least partially based on the size of each of the subpixels. At least some pixels of the display 210 may be driven based on, for example, at least partially based on the voltage value or the current value. Visual information (eg, text, images, or icons) corresponding to the image data may be displayed through the display 210.

According to an embodiment, the display device 160 may further include a touch circuit 250. The touch circuit 250 may include a touch sensor 251 and a touch sensor IC 253 for controlling the touch sensor 251. The touch sensor IC 253 may control the touch sensor 251 to detect, for example, a touch input or a hovering input for a specific location of the display 210. For example, the touch sensor IC 253 may sense a touch input or a hovering input by measuring a change in a signal (eg, voltage, light amount, resistance, or charge amount) for a specific location of the display 210. The touch sensor IC 253 may provide information about the sensed touch input or hovering input (eg, location, area, pressure, or time) to the processor 120. According to an embodiment, at least a part of the touch circuit 250 (eg, the touch sensor IC 253) is disposed as part of the display driver IC 230, or the display 210, or outside the display device 160. It may be included as part of other components (eg, coprocessor 123).

 According to an embodiment, the display device 160 may further include at least one sensor (eg, a fingerprint sensor, an iris sensor, a pressure sensor, or an illuminance sensor) of the sensor module 176, or a control circuit therefor. In this case, the at least one sensor or a control circuit thereof may be embedded in a part of the display device 160 (eg, the display 210 or DDI 230) or a part of the touch circuit 250. For example, when the sensor module 176 embedded in the display device 160 includes a biometric sensor (eg, a fingerprint sensor), the biometric sensor is associated with a touch input through some areas of the display 210. (Eg fingerprint image) can be obtained. For another example, when the sensor module 176 embedded in the display device 160 includes a pressure sensor, the pressure sensor may acquire pressure information associated with a touch input through a partial or entire area of the display 210. You can. According to an embodiment, the touch sensor 251 or the sensor module 176 may be disposed between pixels of a pixel layer of the display 210 or above or below the pixel layer.

The electronic device according to various embodiments disclosed in the present document may be various types of devices. The electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device. The electronic device according to the embodiment of the present document is not limited to the above-described devices.

It should be understood that various embodiments of the document and terms used therein are not intended to limit the technical features described in this document to specific embodiments, and include various modifications, equivalents, or substitutes of the embodiment. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. In this document, "A or B", "at least one of A and B", "at least one of A or B," "A, B or C," "at least one of A, B and C," and "A Each of the phrases such as "at least one of,, B, or C" may include any one of the items listed together in the corresponding phrase of the phrases, or all possible combinations thereof. Terms such as “first”, “second”, or “first” or “second” can be used to simply distinguish a component from other components, and to separate components from other aspects (eg, importance or Order). Any (eg, first) component is referred to as a "coupled" or "connected" to another (eg, second) component, with or without the term "functionally" or "communicatively" When mentioned, it means that any of the above components can be connected directly to the other components (eg, by wire), wirelessly, or through a third component.

The term "module" as used herein may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic blocks, components, or circuits. The module may be an integrally configured component or a minimum unit of the component or a part thereof performing one or more functions. For example, according to an embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of the present document may include one or more instructions stored in a storage medium (eg, internal memory 136 or external memory 138) readable by a machine (eg, electronic device 101). It may be implemented as software (e.g., program 140) that includes. For example, a processor (eg, processor 120) of a device (eg, electronic device 101) may call and execute at least one of one or more commands stored from a storage medium. This enables the device to be operated to perform at least one function according to the at least one command called. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The storage medium readable by the device may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device, and does not include a signal (eg, electromagnetic wave), and this term is used when data is stored semi-permanently. It does not distinguish between temporary storage cases.

According to one embodiment, a method according to various embodiments disclosed in this document may be provided as being included in a computer program product. Computer program products are commodities that can be traded between sellers and buyers. The computer program product is distributed in the form of a device-readable storage medium (eg compact disc read only memory (CD-ROM)), or through an application store (eg Play StoreTM) or two user devices ( It can be distributed (eg, downloaded or uploaded) directly or online between smartphones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored at least temporarily in a storage medium readable by a device such as a memory of a manufacturer's server, an application store's server, or a relay server, or may be temporarily generated.

According to various embodiments, each component (eg, module or program) of the above-described components may include a singular or a plurality of entities. According to various embodiments, one or more components or operations of the above-described corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg, modules or programs) may be integrated into one component. In this case, the integrated component may perform one or more functions of each component of the plurality of components the same or similar to that performed by the corresponding component among the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component may be executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be executed in a different order, or omitted Or, one or more other actions can be added.

3 illustrates an example of a functional configuration of an electronic device according to various embodiments. Such a functional configuration may be included in the electronic device 101 shown in FIG. 1.

Referring to FIG. 3, the electronic device 300 may include a control circuitry 310 and a sensor circuitry 320.

The control circuit 310 may include at least one of the processor 120 illustrated in FIG. 1 or the touch sensor IC 253 illustrated in FIG. 2, and the sensor circuit 320 may include the touch sensor 251. You can. For example, the sensor circuit 320 may be implemented as the touch sensor 251 or may be implemented independently of the touch sensor 251. When the sensor circuit 320 is implemented independently of the touch sensor 251, the sensor circuit 320 may be disposed in the same layer as the touch sensor 251. In various embodiments, the sensor circuit 320 may be implemented independently from the display (not shown in FIG. 3) of the electronic device 300, or may be implemented integrally with the display. For example, the sensor circuit 320 may be implemented as an on cell touch active matrix organic light-emitting diode (AMOLED) by depositing directly on the AMOLED display. For another example, the sensor circuit 320 may be implemented as a Y-OCTA (youm-on cell touch active matrix organic light-emitting diode (AMOLED)) by being deposited directly on the flexible AMOLED display. For another example, the sensor circuit 320 may be deposited inside the display. In various embodiments, the sensor circuit 320 may be referred to as a strain gauge sensor in that it is used to identify the strength of the touch input's pressing force (or the strength of the pressure of the touch input). .

In various embodiments, the control circuit 310 is based on a touch input received by the electronic device 300, and a resistance (not shown) in the sensor circuit 320 corresponding to a location receiving the touch input. To this, a voltage of an alternating current (AC) signal can be applied. For example, the control circuit 310 may identify a location receiving the touch input based on a change in capacitance. For example, referring to FIG. 4, the sensor circuit 320 may include a plurality of first electrodes 401-1 to 401-N and a plurality of second electrodes 402-1 to 402-L. You can. Mutual capacitance is formed between one of the plurality of first electrodes 401-1 to 401-N and one of the plurality of second electrodes 402-1 to 402-L. Can be. For example, mutual capacitance (C _km ) may be formed between the electrodes 401-k (k is a natural number from 1 to N) and the electrodes 402-m (m is a natural number from 1 to L). have. In various embodiments, the control circuit 310, in response to receiving the touch input 410, based on the change in the mutual capacitance (C _km ), the touch input 410 and the electrode 401-k It can be identified that the electrodes 402-m are received at the crossing positions. In various embodiments, the control circuit 310 may identify, based on the identification, at least one resistance corresponding to the position among a plurality of resistances in the sensor circuit 320. For example, the control circuit 310 includes the plurality of resistors formed by the plurality of first electrodes 401-1 to 401-N and the plurality of second electrodes 402-1 to 402-L. Among them, at least one of the resistor R _k and the resistor R _m corresponding to the location at which the touch input 410 is received may be identified. In various embodiments, the control circuit 310 may apply a voltage of the AC signal to the at least one resistor based on identifying the at least one resistor.

In various embodiments, the voltage of the AC signal is a first voltage value in a first time period having a first length and a second time period having a second length after the first time period (subsequent). It can have 2 voltage values. In various embodiments, the second length may be the same as or different from the first length. In various embodiments, the second voltage value may be distinguished from the first voltage value. For example, the second voltage value may be a differential voltage value of the first voltage value.

For example, the control circuit 310, based on identifying the resistance (R _k ) among the plurality of resistors, the electrode 401-k, the electrode 402-m, or the electrode 401- (k The voltage of the AC signal can be applied to +1)). For another example, the control circuit 310 may be based on identifying a resistor R _m among the plurality of resistors, the electrode 401-k, the electrode 402-m, or the electrode 402-( The voltage of the AC signal may be applied to m + 1)). However, it is not limited thereto.

In various embodiments, the sensor circuit 320 may output a signal for indicating the strength of pressing the touch input based on the voltage of the AC signal applied to the at least one resistor. In various embodiments, the signal may be provided to the control circuit 310.

For example, the voltage of the AC signal may be applied to the at least one resistor between the transmitter 322 and the receiver 324 through the transmitter 322 in the sensor circuit 320. In various embodiments, the sensor circuit 320 may control the control circuit using a random sequence through the random sequence encoding unit 326 in the transmitter 322 to change the frequency distribution of noise included in the signal. The AC signal obtained from 310) may be transformed. In various embodiments, the random sequence may be used to spread noise of a specific frequency (or frequency band) included in the signal. In various embodiments, the voltage of the converted AC signal may be applied to the resistance between transmitter 322 and receiver 324. According to embodiments, the conversion of the AC signal may be performed by the control circuit 310. In this case, the transmitter 322 of the sensor circuit 320 may not include the random sequence encoding unit 326.

In various embodiments, the sensor circuit 320 may obtain a first signal for indicating a change in the value of the at least one resistance using the converter 328 included in the receiver 324. In various embodiments, the value of the at least one resistance may be changed by pressing the touch input. For example, the sensor circuit 320 may change the value of the at least one resistance based at least on the physical length of the at least one resistance being changed by pressing a touch input. In various embodiments, the sensor circuit 320 is based on the voltage of the at least one applied AC signal (or the voltage of the converted AC signal) through a converter 328 included in the receiver 324. By doing so, a voltage (or current) of the first signal for indicating a change in the value of the resistance can be obtained. In various embodiments, the voltage (or current) of the first signal may be applied to the integrator 330 included in the receiver 324. In various embodiments, the sensor circuit 320, through the integrator 330 included in the receiver 324, based on the first signal, a second for indicating a change in the value of the at least one resistance You can acquire a signal. In various embodiments, the sensor circuit 320 may use the integrator 330 such that the signal for indicating the intensity of the pressing of the touch input includes noise of a reduced size. For example, the voltage of the AC signal applied by the control circuit 310 has the first voltage value in the first time period and the first voltage value in the second time period after the first time period. Since it has the second voltage value that is the differential voltage value of, the sensor circuit 320, the integrator 330, so that the signal for indicating the intensity of the pressing of the touch input includes noise of a reduced size. The second signal may be obtained by processing the first signal through.

In various embodiments, the second signal may be provided to the ADC 332. In various embodiments, the sensor circuit 320 may convert the second signal to a digital value through the ADC 332. In various embodiments, the converted digital value may configure the signal for indicating the intensity of the pressing of the touch input. The signal configured with the digital values may be provided from the sensor circuit 320 to the control circuit 310.

In various embodiments, when the AC signal is converted by the random sequence, the converted digital value may be provided to the random sequence decoding unit 334. In various embodiments, the sensor circuit 320 may inverse-transform the digital value using the random sequence applied to the AC signal through the random sequence decoding unit 334. The signal composed of the inverse transformed digital value may be provided to the control circuit 310 from the sensor circuit 320. According to embodiments, the inverse conversion of the digital value may be performed by the control circuit 310. In this case, the random sequence decoding unit 334 may not be included in the receiver 324 of the sensor circuit 320.

In various embodiments, the control circuit 310 may identify the intensity of the pressing of the touch input based on the signal composed of the digital value (or the signal composed of the inverse transformed digital value). In various embodiments, the control circuit 310 executes a function corresponding to the identified intensity in the electronic device 300 or a function corresponding to the identified intensity in the electronic device 300, Information on the identified strength may be provided to other components (eg, processor 120) in the electronic device 300.

In various embodiments, the sensor circuit 320 can have various configurations.

로 변경될 수 있다. 다양한 실시예들에서, AC 신호의 전압(515)은, 제1 시간 구간(517) 및 제3 시간 구간(521)에서 V₁의 전압값을 가지고 제2 시간 구간(519) 및 제4 시간 구간(523)에서 V₂의 전압값을 가질 수 있다. 다양한 실시예들에서, V₂는 -V₁일 수 있다. 다양한 실시예들에서, 제어 회로(310)는, 전자 장치(300)에 수신되는 상기 터치 입력에 기반하여, 센서 회로(320)에 포함된 저항(510)의 다른 단(another end)(525)과 적분기(527)를 전기적으로(electrically) 연결하기 위한 스위치(529)에 전압(예: V_sel)을 인가할 수 있다. 다양한 실시예들에서, 적분기(527)는, 도 3에 도시된 적분기(330)를 포함할 수 있다. 한편, 노이즈(531)가 스위치(529)에 인가되는 전압(예: V_sel) 및 저항(510)의 일단(513)에 인가되는 상기 AC 신호의 전압(515)에 의해, 저항(510)에 유입될(flowed in) 수 있다. 다양한 실시예들에서, 노이즈(531)는 디스플레이를 구성하는 캡슐화 글라스(encapsulation glass)에 의해 형성되는 캐패시턴스(capacitance)(533)를 통해 저항(510)에 유입되기 때문에, 노이즈(531)는 DC(direct current) 신호를 포함하지 않을 수 있다. For example, referring to FIG. 5, the control circuit 310 is an end of the resistor 510 included in the sensor circuit 320 based on the touch input received by the electronic device 300. ) 513, the voltage 515 of the AC signal can be applied. In various embodiments, resistor 510 may be a resistor identified by control circuit 310. In various embodiments, the resistor 510 may be a resistor whose value is changed by the pressing of the touch input. For example, the value of the resistor 510 is R + from R by the pressing of the touch input.

Can be changed to In various embodiments, the voltage 515 of the AC signal has a voltage value of V ₁ in the first time period 517 and the third time period 521, and the second time period 519 and the fourth time period A voltage value of V ₂ may be obtained at 523. In various embodiments, V ₂ may be -V ₁ . In various embodiments, the control circuit 310, based on the touch input received by the electronic device 300, another end 525 of the resistor 510 included in the sensor circuit 320. A voltage (for example, V _sel ) may be applied to the switch 529 for electrically connecting the integrator 527. In various embodiments, integrator 527 may include integrator 330 shown in FIG. 3. Meanwhile, the noise 531 is applied to the resistor 510 by the voltage applied to the switch 529 (for example, V _sel ) and the voltage 515 of the AC signal applied to one end 513 of the resistor 510. It can be flowed in. In various embodiments, since the noise 531 flows into the resistor 510 through the capacitance 533 formed by encapsulation glass constituting the display, the noise 531 is DC ( direct current) signal.

On the other hand, in various embodiments, a voltage for indicating the amount of change in the value of the resistance 510 according to the pressing of the touch input, a voltage applied to the switch 529 (eg, V _sel ) and a resistance 510 Based on the voltage 515 of the AC signal applied to one end of 513, it may be applied to the integrator 527. Meanwhile, the control circuit 310 may apply the voltage V _RST to the switch 537 for a specified time period in order to reset the capacitance 535 connected to the integrator 527.

On the other hand, the integrator 527 is based on the voltage for indicating the amount of change in the value of the resistance 510 according to the pressing of the touch input after the initialization of the capacitance 535, the The voltage of the signal for indicating the intensity can be output. In the voltage of the signal for indicating the pressing of the touch input, the voltage 515 of the AC signal applied to one end 513 of the resistor 510 is the first time period 517 and the third time period 521 ) within the signal, because with a voltage value of V ₁ second time interval 519, and the fourth time interval (have a voltage value of V ₂ at 523), indicating the strength of the pressing of the touch input on the In can have a reduced size. For example, referring to FIG. 6, the control circuit 310 sets the voltage 515 of the AC signal to one end 513 of the resistor 510 based on the touch input received by the electronic device 300. It is to apply a V _sel during time interval 610 to the switch 529 on, and during the time interval 615, and applies the V _sel to the switch 529, and applies the V _RST during the time interval 620, the time V _RST may be applied during the period 625. The integrator 527 can output V _OUT by these applications. In various embodiments, since V _OUT has a first signal in the time period 630 and a second signal that is a differential signal of the first signal in the time period 635, noise introduced into the resistor 510 ( 531) may have a reduced size in the signal for indicating the intensity of the pressing of the touch input.

For another example, referring to FIG. 7, the sensor circuit 320 may include the active circuit 710 instead of the switch 529. The active circuit 710 may include a DAC 710, an amplifier 720, and a switch 725. In various embodiments, the sensor circuit 320 may include an active circuit 710 instead of the switch 529 to prevent saturation of the integrator 527. In various embodiments, integrator 527 may include integrator 330 shown in FIG. 3. In various embodiments, the control circuit 310 can apply the specified voltage (eg, V _DAC ) to the other end 525 of the resistor 510 and one end of the amplifier 720 by controlling the DAC 715. have. In various embodiments, the application of the specified voltage (eg, V _DAC ) may electrically connect the integrator 527 with the other end 525 of the resistor 510. In various embodiments, the integrator 527 may output a voltage for indicating the intensity of the pressing of the touch input, such as V _OUT shown in FIG. 6, based on the connection. Since the voltage (eg, V _OUT ) output from the integrator 527 has a first signal in the time period 630 and a second signal that is a differential signal of the first signal in the time period 635, the resistance The noise 531 introduced into the 510 may have a reduced magnitude in the signal for indicating the intensity of the pressing of the touch input. For example, referring to FIG. 8, the noise 531 having the reduced magnitude included in the signal for indicating the intensity of the pressing of the touch input may have a frequency distribution as the graph 800. have. The horizontal axis of the graph 800 represents the frequency, and the unit of the frequency may be rad / sample, and the vertical axis of the graph 800 includes the reduced signal included in the signal for indicating the intensity of the pressing of the touch input. The gain of the noise 531 having a magnitude and the unit of the gain may be dB (decibel). As with graph 800, the gain of the DC component of the noise 531 having the reduced magnitude contained in the signal for indicating the intensity of the pressing of the touch input (eg, frequency 0 of graph 800) The gain a (dB) at, may have a reduced magnitude by the voltage 515 of the AC signal applied by the control circuit 310.

In various embodiments, the control circuit 310 is focused on a specific frequency band of the noise 531 having the reduced magnitude included in the signal to indicate the intensity of the pressing of the touch input. In order to change the gain (eg, gain 0 (dB) at frequency 1 of the graph 800) to another frequency band, the integration period of the integrator 527 may be controlled. For example, the control circuit 310 has the reduced size included in the signal for indicating the intensity of the pressing of the touch input by changing the time period 630 or the time period 635. The gain concentrated in a specific frequency band of the noise 531 may be changed to another frequency band.

In various embodiments, the control circuit 310 is focused on a specific frequency band of the noise 531 having the reduced magnitude included in the signal to indicate the intensity of the pressing of the touch input. In order to distribute the gain, the sensor circuit 320 may be controlled to transform the voltage 515 of the AC signal using the random sequence.

For another example, referring to FIG. 9, the control circuit 310 is based on the touch input received by the electronic device 300, one end of the resistor 510 included in the sensor circuit 320 ( 513) applying a voltage of the AC signal (V _P) on, and to apply a voltage (V _N) of the differential signal of the AC signal to one end (907) of the reference resistor 905 included in the sensor circuit 320 You can. In various embodiments, the resistor 510 may be a resistor whose value is changed by the pressing of the touch input and the temperature of the sensor circuit 320. In various embodiments, the reference resistance 905 may be a resistance whose value is changed by the temperature of the sensor circuit 320, but the value is not changed upon the pressing of the touch input. For example, the reference resistor 905 may be disposed at another location spaced apart from the location receiving the touch input. For another example, the reference resistor 905 may be disposed at a position independent of the reception of the touch input. In various embodiments, a reference resistor 905 may be included in the sensor circuit 320 to reduce noise generated by the temperature.

In various embodiments, the control circuit 310 applies a voltage V _b to the active circuit 910 for a designated time based on the touch input received by the electronic device 300, and the active circuit 915 ) May be applied with _a voltage (V _a ) for the specified time. The other end 525 of the resistor 510 is electrically connected to the integrator 527 by application of the voltage V _b , and the other end 909 of the resistance 905 is applied by the application of the voltage V _a . The integrator 527 may be electrically connected. In various embodiments, integrator 527 may include integrator 330 shown in FIG. 3. Meanwhile, the noise 531 flows into the resistor 510 through the capacitance 533-1 formed by the encapsulated glass, and flows into the resistor 905 through the capacitance 533-2 formed by the encapsulated glass. You can.

In various embodiments, the control circuit 310 distinguishes from the specified time to reset the capacitance 535 connected to the integrator 527 based on the touch input received by the electronic device 300. The voltage V _RST may be applied to the switch 537 for another designated time.

)를 나타내는 데이터와 기준 저항(910)의 값의 변화(예:

)를 나타내는 데이터 사이의 차이를 나타내는 전압이, 전압(V_P), 전압(V_N), 전압(V_a), 전압(V_b), 및 전압(V_RST)에 기반하여, 적분기(527)에 인가될 수 있다. 다양한 실시예들에서, 적분기(527)에 인가되는 상기 전압의 신호는, 상기 온도에 의해 발생되는(caused) 노이즈를 포함하지 않거나 상기 온도에 의해 발생되는 노이즈를 감소된 크기로 포함할 수 있다. In various embodiments, a change in the value of the resistor 510 (eg,

) And the change in the value of the reference resistor 910 (for example:

The voltage representing the difference between the data representing) is based on the voltage V _P , the voltage V _N , the voltage V _a , the voltage V _b , and the voltage V _RST , the integrator 527. Can be applied to. In various embodiments, the signal of the voltage applied to the integrator 527 may not include noise generated by the temperature or may include noise generated by the temperature in a reduced size.

In various embodiments, the integrator 527 is based on a voltage representing a difference between data representing a change in the value of the resistor 510 and data representing a change in the value of the reference resistor 910, and the voltage V _OUT ).

For example, referring to FIG. 10, the control circuit 310 applies the voltage V _P to one end 513 of the resistor 510 and applies the voltage V _N (differential voltage of V _P ) to the reference resistor. A voltage V _N may be applied to one end 907 of 905, a voltage V _b may be applied to the active circuit 910, and a voltage V _a may be applied to the active circuit 915. . In addition, the control circuit 310 may apply the voltage V _RST to the switch 537 every specified period. The integrator 527 receives the first signal in the time period 1010 and the time period 1030 based on the voltage V _P , the voltage V _N , the voltage V _a , and the voltage V _b . The voltage V _OUT having the second signal that is the differential signal of the first signal may be output in the time period 1020 and the time period 1040.

For another example, referring to FIG. 11, the control circuit 310 spreads a gain in a specific frequency band of noise included in the signal for indicating the intensity of the pressing of the touch input. To this end, a voltage V _P transformed by a random sequence is applied to one end 513 of the resistor 510, and a voltage V _N transformed by the random sequence (differential voltage of V _P ) is applied. The reference resistor 905 may be applied to one end 907, a voltage V _b may be applied to the active circuit 910, and a voltage V _a may be applied to the active circuit 915. In addition, the control circuit 310 may apply the voltage V _RST to the switch 537 every specified period. The integrator 527 receives the first signal in the time period 1110 and the time period 1140 based on the voltage V _P , the voltage V _N , the voltage V _a , and the voltage V _b . The voltage V _OUT having the second signal that is the differential signal of the first signal may be output in the time period 1120 and the time period 1130.

In various embodiments, the control circuit 310 controls the switch 920 to obtain the DC component identified from the first signal of the voltage V _OUT output from the integrator 527, and the integrator ( In order to obtain the DC component identified from the second signal of the voltage V _OUT output from 527, the switch 925 may be controlled.

)을 획득하기 위해, 스위치(920)를 시간 구간(1045) 및 시간 구간(1050)에서 제어하고, 적분기(527)로부터 출력되는 전압(V_OUT)의 상기 제2 신호로부터 식별되는 DC 성분(

)을 획득하기 위해, 스위치(925)를 시간 구간(1055) 및 시간 구간(1060)에서 제어할 수 있다. 다양한 실시예들에서, 제어 회로(310)는, 지정된 주기에 기반하여, 상기 터치 입력의 상기 누름의 상기 강도를 나타내기 위한 상기 신호 내에 포함되는 노이즈의 무빙 에버리지(moving average)를 제어하기 위해, 스위치(930)를 이용하여 캐패시턴스(932)를 초기화할 수 있다. 예를 들면, 제어 회로(310)는, 시간 구간(1065)에서 스위치(930)를 제어함으로써, 캐패시턴스(932)를 초기화할 수 있다. For example, referring to FIG. 10, the control circuit 310 includes a DC component identified from the first signal of the voltage V _OUT output from the integrator 527 (

DC component identified from the second signal of the voltage V _OUT output from the integrator 527 by controlling the switch 920 in the time period 1045 and the time period 1050 to obtain)

), The switch 925 may be controlled in the time period 1055 and the time period 1060. In various embodiments, the control circuit 310 controls, based on a specified period, a moving average of noise included in the signal to indicate the intensity of the press of the touch input, The capacitance 932 may be initialized using the switch 930. For example, the control circuit 310 may initialize the capacitance 932 by controlling the switch 930 in the time period 1065.

)을 획득하기 위해, 스위치(920)를 시간 구간(1145) 및 시간 구간(1150)에서 제어하고, 적분기(527)로부터 출력되는 전압(V_OUT)의 상기 제2 신호로부터 식별되는 DC 성분(

)을 획득하기 위해, 스위치(925)를 시간 구간(1155) 및 시간 구간(1160)에서 제어할 수 있다. 다양한 실시예들에서, 제어 회로(310)는, 지정된 주기에 기반하여, 상기 터치 입력의 상기 누름의 상기 강도를 나타내기 위한 상기 신호 내에 포함되는 노이즈의 무빙 에버리지(moving average)를 제어하기 위해, 스위치(930)를 이용하여 캐패시턴스(932)를 초기화할 수 있다. 예를 들면, 제어 회로(310)는, 시간 구간(1165)에서 스위치(930)를 제어함으로써, 캐패시턴스(932)를 초기화할 수 있다. For another example, referring to FIG. 11, the control circuit 310 includes a DC component identified from the first signal of the voltage V _OUT output from the integrator 527 (

DC component identified from the second signal of the voltage V _OUT output from the integrator 527 by controlling the switch 920 in the time period 1145 and the time period 1150,

), The switch 925 may be controlled in the time period 1155 and the time period 1160. In various embodiments, the control circuit 310 controls, based on a specified period, a moving average of noise included in the signal to indicate the intensity of the press of the touch input, The capacitance 932 may be initialized using the switch 930. For example, the control circuit 310 may initialize the capacitance 932 by controlling the switch 930 in the time period 1165.

)은 증폭기(935)에 제공되고, DC 성분(

)은 증폭기(940)에 제공될 수 있다. 다양한 실시예들에서, 증폭기(935)는 DC 성분(

)에 기반하여 전압(V_OUTP)을 출력할 수 있고, 증폭기(940)는 DC 성분(

)에 기반하여 전압(V_OUTN)을 출력할 수 있다. 예를 들어, 도 10 및 도 11을 참조하면, 증폭기(935)는 기준 전압(V_REF)보다 높은 전압값들을 가지는 전압(V_OUTP)을 출력할 수 있고, 증폭기(940)는 기준 전압(V_REF)보다 낮은 전압값들을 가지는 전압(V_OUTN)을 출력할 수 있다. In various embodiments, the DC component (

) Is provided to the amplifier 935, the DC component (

) May be provided to the amplifier 940. In various embodiments, the amplifier 935 is a DC component (

), A voltage V _OUTP may be output, and the amplifier 940 may include a DC component (

), The voltage V _OUTN can be output. For example, referring to FIGS. 10 and 11, the amplifier 935 may output a voltage V _OUTP having voltage values higher than the reference voltage V _REF , and the amplifier 940 may reference voltage V _It is possible to output a voltage V _OUTN having voltage values lower than _REF ).

In various embodiments, voltage V _OUTP and voltage V _OUTN may be applied to ADC 945. The ADC 945 may generate the signal for indicating the intensity of the pressing of the touch input based on the difference value between the final value of the voltage V _OUTP and the final value of the voltage V _OUTN . For example, referring to FIG. 10, the ADC 945 is based on the difference value 1070 between the final value of the voltage V _OUTP and the final value of the voltage V _OUTN . The signal can be generated to indicate the intensity. For another example, referring to FIG. 11, the ADC 945 is based on the difference value 1170 between the final value of the voltage V _OUTP and the final value of the voltage V _OUTN . The signal for indicating the intensity can be generated.

In various embodiments, a specified frequency band of noise included in the signal generated based on the difference value 1170 may be spread by the random sequence. For example, referring to FIG. 12, a specific frequency band of the noise included in the signal generated based on the difference value 1170 may have a frequency distribution as the graph 1200. The horizontal axis of the graph 1200 represents the frequency, and the unit of the frequency may be rad / sample, and the vertical axis of the graph 1200 is the gain of noise included in the signal generated based on the difference value 1170. And the unit of gain may be dB (decibel). The specific frequency band (frequency 0.8 to frequency 1.2) 1230 of the graph 1220 is compared with a specific frequency band (frequency 0.8 to frequency 1.2) 810 as shown in the graph 800 of FIG. 8 by the random sequence. Thus, it can be spread. The electronic device 300 according to various embodiments may generate the signal for indicating the intensity of the pressing of the touch input robust to noise through such spreading.

In various embodiments, the signal for indicating the intensity of the pressing of the touch input may be obtained by the control circuit 310.

In various embodiments, the control circuit 310, when the sensor circuit 320 is used to identify the location that received the touch input, the sensor circuit 320 for identifying the location that received the touch input The mode (or state) of the sensor circuit 320 may be changed based on a timing for generating a first horizontal synchronization signal for synchronizing the operation of the display with the operation of the display of the electronic device 300. For example, the electrode 402-m (m is a natural number of 1 or more and L or less) among the plurality of second electrodes 402-1 to 402-L forming a plurality of horizontal lines is pressed by the touch input. When used as an electrode for identifying the intensity of the control circuit 310, the first horizontal synchronization signal to the electrode 402- (m-1) directly above the electrode 402-m The electrodes 402-m can be controlled to a first mode for identifying the intensity of the pressing of the touch input until it is provided. The control circuit 310, in response to identifying that the first horizontal synchronization signal is provided to the electrodes 402- (m-1), touches the mode of the electrodes 402-m from the first mode to the touch input. It can be controlled in a second mode for identifying the location received. The control circuit 310 may restore the mode of the electrode 402-m to the first mode in response to identifying that the first horizontal synchronization signal is provided to the electrode 402-m. For example, referring to FIG. 13, a first horizontal synchronization signal (TSP_H _sync ) for synchronizing the operation of the display of the electronic device 300 and the operation of the sensor circuit 320 for identifying the location where the touch input is received. ) May be sequentially provided to the plurality of second electrodes 402-1 to 402-L at timings identified based on the horizontal synchronization signal H _sync for display of the electronic device 300. The control circuit 310, until the first horizontal synchronization signal (TSP_H _sync ) is provided to the electrode 402-m used as an electrode for identifying the intensity of the pressing of the touch input, the electronic device 300 ) Based on the second horizontal synchronization signal (SG_H _sync ) for synchronizing the operation of the sensor circuit 320 for identifying the operation of the display and the location of receiving the touch input, the electrode 402-m is the It can be controlled in 1 mode. In various embodiments, the control circuit 310 is configured at a timing 1310 before (or immediately before) the timing 1305 at which the first horizontal synchronization signal TSP_H _{sync is} provided to the electrode 402 -m. Like the state 1315, the mode of the electrode 402-m can be switched from the first mode to the second mode. In the time period from timing 1305 to timing 1320, the second horizontal The synchronization signal SG_H _sync may be deactivated by switching to the second mode After switching to the second mode, the electrode control circuit 310 may have a first horizontal synchronization signal TSP_H _sync . At the timing 1325 after (or immediately after) the timing 1320 provided at (402-m), the mode of the electrode 402-m is restored to the first mode, such as state 1330. You can.

The electronic device 300 according to various embodiments controls the electrode 402-m to the first mode until the electrode 402-m is provided with the first horizontal synchronization signal. The strength of the press can be more accurately identified.

As described above, the electronic device 300 according to various embodiments, by applying a voltage of an AC signal to the sensor circuit 320, strongly presses the touch input received from the electronic device 300 from noise. Can be identified. The electronic device 300 according to various embodiments may spread the noise by converting the voltage of the AC signal using a random sequence. The electronic device 300 according to various embodiments may identify the intensity of the pressing of the touch input more robustly from the noise through the spreading of the noise. The electronic device 300 according to various embodiments may change a gain of a specific frequency component of the noise to a gain of another frequency component by controlling an integral section of a signal generated based on the voltage of the AC signal. The electronic device 300 according to various embodiments may identify the intensity of the pressing of the touch input more robustly from the noise by changing the gain of a specific frequency component of the noise. The electronic device 300 according to various embodiments of the present disclosure is more robust from noise caused by temperature by applying the voltage of the differential signal of the AC signal to a reference resistance different from the resistance to which the voltage of the AC signal is applied. The strength of the pressing of the touch input may be identified.

14 illustrates an example of an operation of an electronic device according to various embodiments. This operation may be performed by the processor 120 of the electronic device 101 shown in FIG. 1, the touch sensor IC 253 shown in FIG. 2, or the control circuit 310 shown in FIG. 3.

Referring to FIG. 14, in operation 1410, the control circuit 310 is based on a touch input received by the electronic device 300, and an AC signal is applied to a resistance in the sensor circuit 320 corresponding to a position receiving the touch input. Voltage can be applied. For example, the control circuit 310 identifies the plurality of resistors included in the sensor circuit 320 based on identifying a location where the processor 120 or the control circuit 310 receives the touch input. The resistor corresponding to the identified position may be identified, and a voltage of the AC signal may be applied to the identified resistor. In various embodiments, the voltage of the AC signal has a first voltage value in a first time interval having a first length, and the second voltage interval has a first voltage value after the first time interval. It may have a second voltage value distinct from the one voltage value. The second voltage value may be opposite to the first voltage value.

In various embodiments, the control circuit 310 may convert the AC signal using a random sequence, and apply the voltage of the converted AC signal to the resistor. In various embodiments, the random sequence may be used to change the frequency distribution of noise included in the signal.

In operation 1420, the control circuit 310 may obtain a signal for indicating the intensity of the pressing of the touch input output based on the voltage of the applied AC signal. In various embodiments, the sensor circuit 320 receiving the voltage of the AC signal generates the signal by inversely transforming another signal output based on the voltage of the AC signal using the random sequence, and the signal is generated. It can be provided to the control circuit. In various embodiments, the sensor circuit 320 provided with the voltage of the AC signal is a control circuit 310 for controlling a switch for electrically connecting the integrator 330 included in the sensor circuit 320 and the resistor. ), The voltage of the AC signal and the voltage of the signal generated based on the resistance are applied to the integrator 330 using the integrator 330 included in the sensor circuit 320, The control circuit 310 may provide the signal obtained based on another signal output from the integrator 330 to which the voltage of the AC signal and the voltage of the signal generated based on the resistance are applied.

As described above, the electronic device 300 according to various embodiments may robustly identify the intensity of the pressing of the touch input from noise through application of the voltage of the AC signal. The electronic device 300 according to various embodiments of the present disclosure converts the AC signal using a random sequence to robustly identify the strength of the touch input from noise.

15 illustrates another example of the operation of the electronic device 300 according to various embodiments. This operation may be performed by the processor 120 of the electronic device 101 shown in FIG. 1, the touch sensor IC 253 shown in FIG. 2, or the control circuit 310 shown in FIG. 3.

15, in operation 1510, the control circuit 310 is an electrode of the k-th horizontal line until a synchronization signal is provided to an electrode of the k-1 horizontal line among a plurality of electrodes forming a plurality of horizontal lines. It can be controlled to a first state for identifying the intensity of the pressing of the touch input. In various embodiments, the synchronization signal may be used to synchronize the operation of the display of the electronic device 300 and the operation of the sensor circuit 320 for identifying the location of the touch input received by the electronic device 300. You can. In various embodiments, among the plurality of electrodes, the remaining electrodes other than the k-th horizontal line electrode are for sequentially identifying the position of the touch input while the k-th horizontal electrode is in the first state. It can be in a second state.

In operation 1520, the control circuit 310, after providing the synchronization signal to the electrode of the k-1 horizontal line, before providing the synchronization signal to the electrode of the kth horizontal line, the control circuit 310 The state of the electrode can be switched to the second state. In various embodiments, the electrode of the k-th horizontal line may be in the second state at a timing at which the synchronization signal is provided to the electrode of the k-th horizontal line. While the synchronization signal is provided from the electrode of the first horizontal line to the electrode of the k-1 horizontal line, another synchronization signal provided to the electrode of the k-th horizontal line may include the second state of the electrode of the k-th horizontal line. By switching to, it can be deactivated. In various embodiments, the other synchronization signal may synchronize the operation of the display of the electronic device 300 and the operation of the sensor circuit 320 to identify the strength of the touch input received by the electronic device 300. Can be used for

In operation 1530, the control circuit 310 may restore the state of the electrode of the k-th horizontal line to the first state in response to providing the synchronization signal to the electrode of the k-th horizontal line. For example, after the synchronization signal is provided to the electrode of the k-th horizontal line, the electrode of the k-th horizontal line can be used to identify the strength of the pressing of the touch input. Meanwhile, the other synchronization signal may be activated based on the restoration to the first state, and provided to the electrode of the k-th horizontal line.

As described above, the electronic device 300 according to various embodiments maintains the electrode of the kth horizontal line in the first state until the synchronization signal is provided to the electrode of the kth horizontal line, thereby Time for identifying the intensity of the pressing of the touch input may be secured. The electronic device 300 according to various embodiments may more accurately identify the intensity of the pressing of the touch input through securing the time. The electronic device 300 according to various embodiments controls the electrode of the k-th horizontal line to the second state switched from the first state at a timing at which the synchronization signal is provided to the electrode of the k-th horizontal line. By doing so, the function of identifying the position of the touch input can be provided through the electrode of the k-th horizontal line.

An electronic device (electronic device 300) according to various embodiments, as described above, is operatively coupled to sensor circuitry (eg, sensor circuit 320) and the sensor circuit Control circuitry (eg, control circuit 310), wherein the control circuit is based on a touch input received by the electronic device, and corresponds to a position receiving the touch input. The voltage of the alternating current (AC) signal is applied to the resistance in the sensor circuit, and the intensity of depression of the touch input output from the sensor circuit based on the voltage of the applied AC signal. It may be configured to acquire a signal for indicating (strength).

In various embodiments, the sensor circuit converts the AC signal using a random sequence based on the touch input received by the electronic device, and converts the voltage of the converted AC signal into the resistance. It can be set to apply to. In various embodiments, the random sequence may be used to change the frequency distribution of noise included in the signal. In various embodiments, the sensor circuit generates the signal by inversely transforming another signal that is output based on the voltage of the applied AC signal using the random sequence, and sends the signal to the control circuit. It can be set to provide.

In various embodiments, the voltage of the AC signal may have a first voltage value in a first time period having a first length, and may have a first length subsequent to the first time period. The second voltage value may be distinguished from the first voltage value in a 2 hour period.

In various embodiments, the sensor circuit may further include an integrator and a switch for connecting the integrator and the resistor, and the control circuit is based on the touch input received by the electronic device. , May be set to switch the state of the switch to electrically connect the integrator and the resistor, the sensor circuit based on the switching of the state of the switch, the voltage and the resistance of the AC signal Applying the voltage of the signal generated based on the integrator, the signal obtained based on another signal output from the integrator to which the voltage of the AC signal and the voltage of the signal generated based on the resistance is applied to the integrator It can be set to provide to the control circuit.

In various embodiments, the sensor circuit includes an amplifier connected to the other end opposite to the end of the resistance to which the voltage of the AC signal is applied, and the amplifier A digital-to-analog convertor (DAC) for applying a voltage to the voltage may be further included, and the control circuit may control the DAC based on the touch input received by the electronic device, thereby controlling the DAC It may be set to apply, the other end of the resistor, the voltage may be applied by the control of the DAC.

In various embodiments, the control circuit applies a voltage of a differential signal of the AC signal to a reference resistance in the sensor circuit, based on the touch input received at the electronic device, The sensor circuit may be configured to obtain the signal output based on the voltage of the applied AC signal and the voltage of the applied differential signal. In various embodiments, the reference resistor may be disposed at another location spaced apart from the location receiving the touch input. In various embodiments, the reference resistor may be arranged in a position independent from the reception of the touch input. In various embodiments, the sensor circuit may further include an integrator, and a voltage of a signal generated based on the voltage of the AC signal and the voltage of the differential signal is applied to the integrator, and the voltage is applied. It may be set to provide the control circuit with the signal obtained based on the first signal output from the integrator. In various embodiments, the sensor circuit may include a first switch configured to obtain first sampling data for a first time period of the first signal and second sampling data for a second time period of the first signal. An analog-to-digital ADC (ADC) configured to receive a difference value between the first switch and the second sampling data, and convert the received difference value to a digital value. convertor), and the signal may be configured with the converted digital value (configured with).

In various embodiments, the control circuit converts the AC signal using a random sequence based on the touch input received by the electronic device, applies a voltage of the converted AC signal to the resistor, The voltage of the differential signal of the converted AC signal may be set to be applied to the reference resistor. In various embodiments, the random sequence may be used to change the frequency distribution of noise included in the signal.

In various embodiments, the length of the resistor may be changed by the pressing of the touch input.

In various embodiments, the electronic device may further include a display panel and another sensor configured to identify a location receiving the touch input, and the sensor circuit and the other sensor circuit may include the display. It may be included in a layer disposed directly on the panel.

In various embodiments, the sensor circuit is based on a change in capacitance between one of a plurality of first electrodes and another of a plurality of second electrodes. Therefore, it may be further set to provide a signal for indicating a position to receive the touch input to the control circuit. In various embodiments, the resistor may be formed in the electrode. In various embodiments, the electronic device may further include a display, the plurality of first electrodes may be formed of a plurality of horizontal lines, and the plurality of second electrodes, It may be formed of a plurality of vertical lines (vertical lines), the electrode, the synchronous signal for synchronizing the state of the touch input and the display to the remaining electrodes excluding the electrode among the plurality of first electrodes sequentially While providing each, it may be in a first state for identifying the intensity of the pressing of the touch input, and providing the synchronization signal to another electrode directly above the electrode among the remaining electrodes In response to this, it may be switched to a second state for identifying the location of the touch input. In various embodiments, the electrode may be restored to the first state in response to providing the sync signal to the electrode.

As described above, an electronic device according to various embodiments of the present disclosure includes a display, a plurality of first electrodes that form a plurality of horizontal lines, and a plurality of first electrodes, and a plurality of vertical lines, respectively. A sensor circuit including a plurality of second electrodes to be formed, and a control circuit operatively coupled to the sensor circuit, may include a control circuit, wherein at least one designated electrode of the plurality of first electrodes The first state for identifying the strength of the touch input of the state of the at least one designated electrode while sequentially providing a synchronization signal for synchronizing the operation of the display and the operation of the sensor circuit to the remaining electrodes. And the synchronization signal to another electrode directly above the at least one designated electrode among the remaining electrodes. In response to providing, the state of the at least one electrode may be set to switch from the first state to a second state for identifying the location of the touch input.

Methods according to embodiments described in the claims or specification of the present disclosure may be implemented in the form of hardware, software, or a combination of hardware and software.

When implemented in software, a computer readable storage medium storing one or more programs (software modules) may be provided. One or more programs stored in a computer-readable storage medium are configured to be executable by one or more processors in an electronic device. One or more programs include instructions that cause an electronic device to execute methods according to embodiments described in the claims or specification of this disclosure.

Such programs (software modules, software) include random access memory, non-volatile memory including flash memory, read only memory (ROM), and electrically erasable programmable ROM. (EEPROM: electronic erasable programmable read only memory), magnetic disc storage device (CD-ROM: compact disc-ROM), digital versatile discs (DVDs) or other forms It can be stored in an optical storage device, a magnetic cassette. Alternatively, it may be stored in a memory composed of a combination of some or all of them. Also, a plurality of configuration memories may be included.

In addition, the program may be through a communication network composed of a communication network such as the Internet, an intranet, a local area network (LAN), a wide LAN (WLAN), or a storage area network (SAN), or a combination thereof. It can be stored in an attachable storage device that can be accessed. Such a storage device can access a device performing an embodiment of the present disclosure through an external port. In addition, a separate storage device on the communication network may access a device that performs embodiments of the present disclosure.

In the specific embodiments of the present disclosure described above, elements included in the disclosure are expressed in singular or plural according to the specific embodiments presented. However, the singular or plural expressions are appropriately selected for the situation presented for convenience of description, and the present disclosure is not limited to the singular or plural components, and even the components expressed in plural are composed of singular or Even the expressed components can be composed of a plurality.

Meanwhile, in the detailed description of the present disclosure, specific embodiments have been described. However, various modifications are possible without departing from the scope of the present disclosure. Therefore, the scope of the present disclosure should not be limited to the described embodiments, but should be determined not only by the scope of claims to be described later, but also by the scope and equivalents of the claims.

Claims (20)

In an electronic device,
Sensor circuitry; And
A control circuitry operatively coupled to the sensor circuit, the control circuit comprising:
On the basis of the touch input obtained through the sensor circuit, a voltage of an alternating current (AC) signal is applied to a resistance in the sensor circuit corresponding to a position receiving the touch input,
An electronic device configured to acquire a signal associated with the strength of the depression of the touch input output based on the voltage of the applied AC signal from the sensor circuit.
The method according to claim 1, wherein the sensor circuit,
Based on the touch input, the AC signal is converted using a random sequence,
An electronic device set to apply the voltage of the converted AC signal to the resistor.
The method according to claim 2, wherein the random sequence,
An electronic device usable to change the frequency distribution of noise included in the signal.
The method according to claim 2, The sensor circuit,
The signal is generated by inversely transforming another signal output based on the voltage of the applied AC signal using the random sequence,
An electronic device configured to provide the signal to the control circuit.
The method according to claim 1, The voltage of the AC signal,
Having a voltage value in a first range in a first time period having a first length,
An electronic device having a voltage value in a second range different from a voltage value in the first range in a second time period having the first length subsequent to the first time period.
The method according to claim 1, wherein the sensor circuit,
Further comprising an integrator (integrator) and a switch for electrically connecting the integrator and the resistor,
The control circuit,
Based on the touch input, it is set to switch the state of the switch to electrically connect the integrator and the resistor,
The sensor circuit,
Based on the switching of the state of the switch, the voltage of the AC signal and the voltage of the signal generated based at least on the resistance are applied to the integrator,
An electronic device configured to provide the control circuit with the signal obtained based on another signal output from an integrator that has applied the voltage of the signal generated at least based on the voltage of the AC signal and the resistance.
The method according to claim 1, wherein the sensor circuit,
An amplifier connected to the other end opposite to one end of the resistance to which the voltage of the AC signal is applied;
A DAC (digital-to-analog convertor) for applying a voltage to the amplifier further comprises,
The control circuit,
Based on the touch input, it is set to apply the voltage to the amplifier by controlling the DAC,
The other end of the resistance,
An electronic device to which the voltage is applied by the control of the DAC.
The method according to claim 1, The control circuit,
Based on the touch input, a voltage of a differential signal of the AC signal is applied to a reference resistance in the sensor circuit,
An electronic device configured to acquire the signal output based on the voltage of the applied AC signal and the voltage of the applied differential signal from the sensor circuit.
The method according to claim 8, wherein the reference resistance,
An electronic device disposed at a different location spaced apart from the location receiving the touch input.
The method according to claim 8, wherein the reference resistance,
An electronic device disposed at a position spaced apart from the position where the touch input is obtained.
The method according to claim 8, The sensor circuit,
Further comprising an integrator,
A voltage of a signal generated based on the voltage of the AC signal and the voltage of the differential signal is applied to the integrator,
An electronic device configured to provide the control circuit with the signal obtained based on the first signal output from the integrator to which the voltage is applied.
The method according to claim 11, The sensor circuit,
A first switch configured to acquire first sampling data for a first time period of the first signal and a second switch configured to acquire second sampling data for a second time period of the first signal,
An analog-to-digital converter (ADC) configured to receive a difference value between the first sampling data and the second sampling data and convert the received difference value to a digital value,
The signal,
An electronic device configured with the converted digital value.
The method according to claim 8, The control circuit,
Convert the AC signal using a random sequence based at least on the touch input,
The voltage of the converted AC signal is applied to the resistor,
An electronic device set to apply the voltage of the differential signal of the converted AC signal to the reference resistor.
The method according to claim 13, The random sequence,
An electronic device available for changing the frequency distribution of noise included in the signal.
The method according to claim 1, wherein the length of the resistance,
An electronic device that is changed by the pressing of the touch input.
The method according to claim 1,
Display panel; And
And further comprising an (another) sensor set to identify the location to receive the touch input,
The sensor circuit and the other sensor circuit,
An electronic device included in a layer disposed directly on the display panel.
The method according to claim 1, wherein the sensor circuit,
In response to a change in capacitance between an electrode of one of a plurality of first electrodes included in the sensor circuit and another of a plurality of second electrodes included in the sensor circuit. An electronic device further configured to provide a signal for indicating a location to receive the touch input to the control circuit based on the signal.
The method according to claim 17, wherein the resistance,
An electronic device formed within the electrode.
In the electronic device,
display;
A sensor circuit including a plurality of first electrodes each forming a plurality of horizontal lines and a plurality of second electrodes crossing the plurality of first electrodes and forming a plurality of vertical lines, respectively; And
A control circuit operatively coupled to the sensor circuit,
The control circuit,
While sequentially providing a synchronization signal for synchronizing the operation of the display and the operation of the sensor circuit to the remaining electrodes except for at least one designated electrode among the plurality of first electrodes, the state of the at least one designated electrode To maintain the first state for identifying the intensity of the touch input pressing,
In response to providing the synchronization signal to another electrode directly above the at least one designated electrode among the remaining electrodes, the touch input of the state of the at least one electrode from the first state The electronic device is set to switch to a second state for identifying the location of the.
The method according to claim 19, The at least one electrode,
An electronic device restored to the first state in response to providing the synchronization signal to the at least one electrode.

Images