KR20210121904A - Electronic device including display structure and display structure - Google Patents

Abstract

An electronic device according to various embodiments includes: a light emitting element which is connected to a cathode of a display of the electronic device; a sensing circuit which is connected to the cathode, and is configured to detect a leakage current from the light emitting element; and at least one processor which is configured to check illuminance based on a detection result of the sensing circuit. Other embodiments are possible.

Description

Electronic device including display structure and display structure {ELECTRONIC DEVICE INCLUDING DISPLAY STRUCTURE AND DISPLAY STRUCTURE}

Various embodiments relate to electronic devices including display structures and display structures.

BACKGROUND Electronic devices including various displays and touch sensors are widespread. The electronic device may display a screen including an object on the display. The user may touch a point on the display with a finger or a stylus pen, and the electronic device may detect a position of the touch on the display. The electronic device may perform a function associated with an object corresponding to the sensed position, and thus a user-friendly user interface that allows the user to operate the electronic device with a simple touch may be provided.

Meanwhile, an electronic device capable of sensing a touch on the bezel of the electronic device is widespread. The electronic device may detect a touch position on the bezel and perform a function corresponding to the sensed position. Accordingly, a user-friendly user interface capable of recognizing various inputs may be provided as compared to an electronic device capable of sensing a touch only on a display.

Also, an electronic device including an illuminance sensor is widely used. The illuminance sensor may output an electric signal based on ambient illuminance based on the photoelectric effect, in which electrons move inside to change conductivity when light is received.

When the electronic device includes an illuminance sensor element independent from the display or touch sensor in order to have an illuminance sensing function, the price of the illuminance sensor element is included in the production cost of the electronic device, and thus the production cost of the electronic device may increase.

In an electronic device capable of sensing a touch on the bezel of the electronic device, a touch on the bezel may be erroneously recognized as hovering, or the hovering may be erroneously recognized as a touch on the bezel. In order to distinguish between touch and hovering on the bezel, an illuminance sensor element independent from the display or touch sensor may be used. .

When an electronic device includes a proximity sensor, the proximity sensor can often malfunction.

According to various embodiments, an electronic device includes a light emitting element connected to a cathode of a display of the electronic device, a sensing circuit connected to the cathode and configured to detect a leakage current from the light emitting element, and the detection result of the sensing circuit It may include at least one processor configured to check the illuminance based on .

According to various embodiments, a structure may include a substrate on which a TFT structure for displaying at least one screen is disposed; an encapsulation layer disposed on the TFT structure; A touch sensor including a plurality of electrodes disposed on the encapsulation layer, a light emitting device connected to the TFT structure and a cathode for the plurality of electrodes, and a cathode connected to the cathode to detect a leakage current from the light emitting device It may include a set sensing circuit, and at least one processor configured to check the illuminance based on the measurement result of the sensing circuit.

In accordance with various embodiments, an electronic device and structure are provided. Accordingly, it is possible to check the illuminance based on the leakage current from the light emitting device. Accordingly, it is possible to check the illuminance around the electronic device without including a separate independent illuminance sensor element.

Accordingly, since the electronic device and the structure according to various embodiments do not require a separate and independent illuminance sensor element, it may help to lower the manufacturing cost of the electronic device.

In addition, since the electronic device and the structure according to various embodiments may check the illuminance based on the leakage current from the light emitting device, the touch and the hovering on the bezel may be clearly distinguished based on the checked illuminance. Accordingly, it is possible to reduce the possibility that a touch on the bezel is erroneously recognized as a hovering or hovering is erroneously recognized as a touch on the bezel.

In addition, since the electronic device and the structure according to various embodiments can check the illuminance based on the leakage current from the light emitting device, it is possible to reduce malfunction due to low reliability of the proximity sensor based on the checked illuminance.

1 is a block diagram of an electronic device in a network environment according to various embodiments of the present disclosure;
2 is a block diagram of a display device according to various embodiments of the present disclosure;
3A illustrates a stacked structure of a display, according to various embodiments.
3B shows a circuit diagram of components for a display and illuminance sensing, in accordance with various embodiments.
3C illustrates a stacked structure of a display and a touch sensor, according to various embodiments.
3D shows a circuit diagram of a display, a touch sensor, and components for illuminance sensing, in accordance with various embodiments.
4A illustrates a relationship between a voltage across a light emitting device and a leakage current, according to various embodiments of the present disclosure.
4B illustrates a relationship between illuminance and leakage current from a light emitting device, according to various embodiments.
5A is a circuit diagram of components for illuminance sensing according to various embodiments of the present disclosure;
5B illustrates an example of an output voltage for illuminance sensing according to various embodiments.
6 illustrates a layout for resistor production in accordance with various embodiments.
7 illustrates a system including a touch sensor IC, a display, and a PMIC, in accordance with various embodiments.
8 is a flowchart illustrating an operation of an electronic device according to various embodiments of the present disclosure;
9 illustrates channels of a touch sensor according to various embodiments.
10 is a flowchart illustrating an operation of an electronic device according to various embodiments of the present disclosure;
11 is a flowchart illustrating an operation of an electronic device according to various embodiments of the present disclosure;

1 is a block diagram of an electronic device 101 in a network environment 100 according to various embodiments. Referring to FIG. 1 , in a network environment 100 , an electronic device 101 communicates with an electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or a second network 199 . It may communicate with the electronic device 104 or the server 108 through (eg, a long-distance 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 , a sound output device 155 , a display device 160 , an audio module 170 , and 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 . ) may be included. In some embodiments, at least one of these components (eg, 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, a program 140) to execute at least one other component (eg, a hardware or software component) of the electronic device 101 connected to the processor 120 . It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or operation, the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 . may be loaded into the volatile memory 132 , process commands or data stored in the volatile memory 132 , and store the resulting data in the non-volatile memory 134 . According to an embodiment, the processor 120 includes a main processor 121 (eg, a central processing unit or an application processor), and a secondary processor 123 (eg, a graphics processing unit, an image signal processor) that can be operated independently or in conjunction with the main processor 121 . , a sensor hub processor, or a communication processor). Additionally or alternatively, the auxiliary processor 123 may be configured to use less power than the main processor 121 or to be specialized for a designated function. The auxiliary processor 123 may be implemented separately from or as a part of the main processor 121 .

The auxiliary processor 123 may be, for example, on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or when the main processor 121 is active (eg, executing an application). ), together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display device 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states. According to an embodiment, the coprocessor 123 (eg, an image signal processor or a communication processor) may be implemented as part of another functionally related component (eg, the camera module 180 or the communication module 190). have.

The memory 130 may store various data used by at least one component (eg, the processor 120 or the sensor module 176 ) of the electronic device 101 . The data may include, for example, input data or output data for software (eg, the program 140 ) and instructions 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 a command or data to be used by a component (eg, the processor 120 ) of the electronic device 101 from the outside (eg, a user) of the electronic device 101 . The input device 150 may include, for example, a microphone, a mouse, a keyboard, or a digital pen (eg, a stylus pen).

The sound output device 155 may output a sound signal to the outside of the electronic device 101 . The sound 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 incoming calls. According to one embodiment, the receiver may be implemented separately from or as part of the speaker.

The display device 160 may visually provide information to the outside (eg, a user) of the electronic device 101 . The display device 160 may include, for example, a display, a hologram device, or a projector and a control circuit for controlling the corresponding 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 intensity of a force generated by the touch. have.

The audio module 170 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 170 acquires a sound through the input device 150 , or an external electronic device (eg, a sound output device 155 ) connected directly or wirelessly with the electronic device 101 . The sound may be output through the electronic device 102 (eg, a speaker or a headphone).

The sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, user state), and generates an electrical signal or data value corresponding to the sensed 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 IR (infrared) sensor, a biometric 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 may be used for the electronic device 101 to directly or wirelessly connect with 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 an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic sense. According to an 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 moving images. According to an 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 an embodiment, the power management module 188 may be implemented as, for example, 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, 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 establishment and communication through the established communication channel. The communication module 190 may include one or more communication processors that operate independently of the processor 120 (eg, an application processor) and support 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, : It may include a local area network (LAN) communication module, or a power line communication module). Among these communication modules, a corresponding communication module is a first network 198 (eg, a short-range communication network such as Bluetooth, WiFi direct, or IrDA (infrared data association)) or a second network 199 (eg, a cellular network, the Internet, or It may communicate with an external electronic device via a computer network (eg, a telecommunication network such as a LAN or WAN). These various types of communication modules may be integrated into one component (eg, a single chip) or may be implemented as a plurality of components (eg, multiple chips) separate from each other. The wireless communication module 192 uses the subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199 . The electronic device 101 may be identified and authenticated.

The antenna module 197 may transmit or receive a signal or power to the outside (eg, an external electronic device). According to an embodiment, the antenna module may include one antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed 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 connected from the plurality of antennas by, for example, the communication module 190 . can be selected. A signal or power may be transmitted or received between the communication module 190 and an external electronic device through the selected at least one antenna. According to some embodiments, other components (eg, RFIC) other than the radiator may be additionally formed as a part of the antenna module 197 .

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

According to an embodiment, the command 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 the electronic device 101 . According to an embodiment, all or part of the operations executed in the electronic device 101 may be executed in one or more of the external electronic devices 102 , 104 , or 108 . For example, when the electronic device 101 needs to perform a function or service automatically or in response to a request from a user or other device, the electronic device 101 may perform the function or service itself instead of executing the function or service itself. Alternatively or additionally, one or more external electronic devices may be requested to perform at least a part of the function or the service. The one or more external electronic devices that have received 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 transmit a 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 a part of a response to the request. For this purpose, 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 of the present disclosure. 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 other components of the electronic device 101 through the interface module 231 . can do. For example, according to one embodiment, the image information is the processor 120 (eg, the main processor 121 (eg, application processor) or the auxiliary processor 123 (eg, an application processor) operated independently of the function of the main processor 121 ( For example: graphic processing device) The 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 be At least a portion of the received image information may be stored in the memory 233, for example, in units of frames, for example, the image processing module 235 may store at least a portion of the image data, Pre-processing or post-processing (eg, resolution, brightness, or size adjustment) may be performed based at least on the characteristics of the display 210. The mapping module 237 may be pre-processed or post-processed through the image processing module 135. A voltage value or a current value corresponding to the image data may be generated. According to an embodiment, the generation of the voltage value or the current value may include, for example, a property of pixels of the display 210 (eg, an arrangement of pixels ( RGB stripe or pentile structure), or the size of each sub-pixel) At least some pixels of the display 210 are, for example, based at least in part on the voltage value or the current value. By being driven, visual information (eg, text, image, or icon) 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 sense, for example, a touch input or a hovering input for a specific position of the display 210 . For example, the touch sensor IC 253 may detect a touch input or a hovering input by measuring a change in a signal (eg, voltage, light amount, resistance, or electric charge amount) for a specific position of the display 210 . The touch sensor IC 253 may provide information (eg, location, area, pressure, or time) regarding the sensed touch input or hovering input 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 a part of the display driver IC 230 , the display 210 , or outside the display device 160 . may be included as a part of other components (eg, the 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 therefor may be embedded in a part of the display device 160 (eg, the display 210 or the 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 provides biometric information related to a touch input through a partial area of the display 210 . (eg, fingerprint image) can be acquired. As another example, when the sensor module 176 embedded in the display device 160 includes a pressure sensor, the pressure sensor may acquire pressure information related to a touch input through a part or the entire area of the display 210 . can According to an embodiment, the touch sensor 251 or the sensor module 176 may be disposed between pixels of the pixel layer of the display 210 , or above or below the pixel layer.

3A illustrates a stacked structure of a display, according to various embodiments. According to various embodiments, the electronic device 101 may include a display stacked structure 300a. A window 340a may be positioned on the uppermost layer of the display stacked structure 300a. The window 340a may be implemented with a substantially transparent material such as glass, but the material is not limited. The window 340a may cover substantially the entire area of the display 210 . The display 210 may include a polarization layer 330a disposed below the window 340a. The structure shown in FIG. 3A including the polarization layer 330a is merely exemplary, and does not include the polarization layer 330a, but a color filter layer (eg, a black pixel define layer (PDL) having a polarization function) and a color filter. A pol-less structure with a color filer may also be possible.In various embodiments, the expression that one component is disposed below or above another component means that both components are placed in contact with each other, It will be understood by those skilled in the art that it may also mean that an intermediary element is disposed between both components.

According to various embodiments, an encapsulation layer 320a may be disposed under the polarization layer 330a. According to various embodiments, the encapsulation layer 320a may include, for example, encapsulation glass or a thin film encapsulation (TFE), and the encapsulation thin film may be implemented as an organic material of a flexible material, There is no restriction on its type. For example, the encapsulation thin film may have a structure in which a plurality of organic material layers and inorganic material layers are stacked. When implemented with an organic material of a flexible material, the entire display 210 may have flexibility. Although not shown in FIG. 3A , according to various embodiments, the stacked structure may further include a touch sensor. According to various embodiments, the touch sensor may not be electrically connected to other layers.

According to various embodiments, a low temperature polycrystalline silicon (LTPS) and a substrate 310a may be disposed under the encapsulation layer 320a. According to various embodiments, low temperature polycrystalline silicon (LTPS) may be disposed on a substrate. LTPS may be used to display at least one screen. According to various embodiments, a thin film transistor (TFT) structure other than low temperature polycrystalline silicon (LTPS) may be disposed on the substrate. According to various embodiments, a light emitting device and a cathode may be further disposed on the substrate. According to various embodiments, the light emitting device may be an organic light-emitting diode (OLED). According to various embodiments, the light emitting device may be an active matrix OLED (AMOLED).

3B shows a circuit diagram of components for a display and illuminance sensing, in accordance with various embodiments. According to various embodiments, portion 330b of circuit diagram 300b may correspond to LTPS and substrate 310a of FIG. 3A . Referring to the circuit diagram 300b, based on the horizontal line update signal h[n] being applied to the gate of the transistor 331b, data for display Data[n] is transmitted through the transistor 331b to the node ( 332b). A capacitor 334b, a capacitor 335b, a light emitting device 320b, and a transistor 333b may be connected to the node 332b, and a driving voltage VDD may be applied to the capacitor 334b and the transistor 333b. . The light emitting device 320b and the capacitor 335b may be connected to the cathode 310b.

When the light emitting device 320b receives light, a leakage current may flow through the light emitting device 320b to the cathode 310b. The relationship between the ambient illuminance and the leakage current flowing from the light emitting device 320b to the cathode 310b will be described later with reference to FIGS. 4A and 4B .

At least a portion of the leakage current flowing from the light emitting device 320b to the cathode 310b may flow to the sensing resistor 340b. According to various embodiments, as shown in FIG. 3B , one end of the sensing resistor 340b may be connected to the cathode 310b, and the other end of the sensing resistor 340b may be connected to a power management integrated circuit (PMIC). According to other various embodiments, the sensing resistor 340b may be included in the PMIC. According to various embodiments, a PMIC may be used to supply appropriate power to the display.

According to various embodiments, the sensing circuit 360b may be configured to detect a leakage current from the light emitting device 320b. According to various embodiments, the sensing circuit 360b may be configured to measure information related to at least one of a leakage current flowing through the cathode 310b or a voltage across the sensing resistor 340b. For example, the sensing circuit 360b may include a voltmeter for measuring the voltage across the sensing resistor 340b. For example, the sensing circuit 360b may include an ammeter for measuring a leakage current flowing from the light emitting device 320b to the cathode 310b. When the sensing circuit 360b includes an ammeter, the sensing circuit 360b may further include a resistor for allowing a portion of the leakage current to flow through the sensing resistor 340b and allowing the other portion of the leakage current to pass through the ammeter. can In another example, the sensing circuit 360b may include an ammeter for detecting a leakage current from the light emitting device 320b, and in this case, the sensing resistor 340b may be omitted. According to various embodiments, the ammeter may be implemented by a Hall element method or a CT method. According to various embodiments, the method of measuring the current of the ammeter is not limited. Another example of the sensing circuit 360b will be described later with reference to FIG. 5A .

3C illustrates a stacked structure of a display and a touch sensor, according to various embodiments. According to various embodiments, the stacked structure 300c may include a window 340c, a polarization layer 330c, a touch sensor 325c, an encapsulation layer 320c, and an LTPS and a substrate 310c. The window 340c, the polarization layer 330c, the encapsulation layer 320c, and the LTPS and the substrate 310c are the same as those described above with reference to FIG. 3A, and thus will not be repeated herein.

According to various embodiments, the touch sensor 325c may be disposed on an upper layer of the encapsulation thin film of the encapsulation layer 320c. A structure in which the touch sensor is disposed on the encapsulation thin film may be referred to as OCTA (on cell touch AMOLED) or Y-OCTA (youm on cell touch AMOLED). According to various embodiments, it will be understood by those skilled in the art that the various embodiments may be applied to any display as well as an on-cell structure such as OCTA. According to various embodiments, the polarization layer 330c A touch sensor 325c (eg, the touch sensor 251) may be disposed on the lower side. The touch sensor 310 may include a plurality of electrodes extending in a first axial direction and a plurality of electrodes extending in a second axial direction, and at a point where the plurality of electrodes extending in each axial direction cross each other An insulating material may be disposed. Each of the electrodes, for example, may be formed of a metal-mesh (metal-mesh), but there is no limitation in the material and/or shape thereof. Between the electrodes, a mutual capacitance C _M may be formed. Referring to FIG. 3A , an example in which a touch sensor is further included in the stacked structure of FIG. 3A and the touch sensor is not electrically connected to other layers has been described above. Differently, according to various embodiments, the touch sensor 325c of FIG. 3C may be electrically connected to other layers.

Between the LTPS and the substrate 310c and the electrodes of the touch sensor 310, an encapsulation capacitance (C _ENCAP ) may be formed. Meanwhile, when the thickness of the encapsulation layer 320c is reduced or replaced with an encapsulation thin film, the encapsulation capacitance may have a relatively large value.

3D illustrates a circuit diagram of a display, a touch sensor, and components for illuminance sensing, in accordance with various embodiments. According to various embodiments, portion 330d of circuit diagram 300d may correspond to LTPS and substrate 310c of FIG. 3C . A transistor 331b, a node 332b, a transistor 333b, a capacitor 334b, a capacitor 335b, a light emitting device 320b included in the portion 330b of the circuit diagram 300b described above with reference to FIG. 3B , and a transistor 331d, a node 332d, a transistor 333d, a capacitor 334d, a capacitor 335d, a light emitting element ( 320d), and the cathode 310d may be equally applied, and thus will not be repeated herein.

According to various embodiments, the cathode 310d of the display circuit may be electrically connected to the touch circuit and function as a ground of the touch circuit.

As described above in FIG. 3C , an encapsulation capacitance (C _ENCAP ) 311d may be formed between the cathode 310d and the electrodes of the touch sensor 325c. Further, as described above in Figure 3c, can be electrodes of a touch sensor (312d, 313d), the mutual capacitance (C _M) between (314d) is formed. In FIG. 3D , two electrodes 312d and 313d are shown, but this is merely for convenience of description, and as described above with reference to FIG. 3C , the touch sensor 325c extends in the first axial direction. It will be appreciated by those skilled in the art that it may include a plurality of electrodes and a plurality of electrodes extending in the second axial direction.

The circuit diagram 300d further includes a sensing resistor 340d, a PMIC 350d, and a sensing circuit 360d. The details of the sensing resistor 340b, the PMIC 350b, and the sensing circuit 360b described above with reference to FIG. 3B are identical to the sensing resistor 340d, the PMIC 350d, and the sensing circuit 360d, respectively. Since it may be applied, it will not be repeatedly described herein.

4A illustrates a relationship between a voltage across a light emitting device and a leakage current, according to various embodiments of the present disclosure. The horizontal axis of FIG. 4A indicates the leakage current in mA. The reason that the current of FIG. 4A has a negative value is that a negative current flows in a situation in which a reverse voltage is applied to the photodiode, that is, in a reverse bias situation. Referring to FIG. 3B as an example, the current flowing from the light emitting device 320b to the cathode 310b in a reverse bias situation is a negative current. That is, current flows from the cathode 310b to the light emitting device 320b direction. The vertical axis of FIG. 4A shows the voltage applied to the light emitting element in units of V. Referring to FIG. 3B as an example, the voltage applied to the light emitting device means the voltage at the other end connected to the transistor 333b with respect to one end connected to the cathode 310b among both ends of the light emitting element 320b.

Since the situation in which the potential of the anode is lower than that of the cathode 310b does not occur in the actual light emitting device, the light emitting device operates as a photodiode in the section 410a in which the voltage applied to the light emitting device is a positive voltage.

The curve 421a shows the relationship between the voltage applied to the light emitting device and the leakage current in a dark environment. The curve 422a shows the voltage applied to the light emitting device when the illuminance is 1000 lux, the curve 423a when the illuminance is 1500 lux, the curve 424a when the illuminance is 2000 lux, and the curve 425a when the illuminance is 2500 lux, respectively. The relationship between leakage current is shown. When the voltage applied to the light emitting device is the same, it can be seen that the higher the illuminance, the larger the leakage current.

4B illustrates a relationship between illuminance and a magnitude of a leakage current from a light emitting device, according to various embodiments. Specifically, FIG. 4B shows the relationship between the illuminance and the magnitude of the leakage current from the light emitting device when the voltage applied to the light emitting device is -5V. The y-intercept 410b represents the magnitude of the leakage current in a dark environment with 0 illuminance. It can be seen from FIG. 4B that the magnitude of the leakage current is relatively small in a dark environment. In addition, it can be seen from FIG. 4B that the higher the illuminance, the larger the leakage current. Although FIG. 4B shows only a situation in which the voltage applied to the light emitting device is -5V, between the curves 421a, 422a, 423a, 424a, and 425a in the section 410a in which the voltage applied to the light emitting device of FIG. 4A is a positive voltage. Observing the relationship between , it can be confirmed that the higher the illuminance, the larger the leakage current even when the voltage applied to the light emitting device is a positive voltage.

5A is a circuit diagram of components for illuminance sensing according to various embodiments of the present disclosure; Circuit (500a) includes a display (510a), a cathode (521a), PMIC (522a) , a sensing resistance (R _S) (530a), an exemplary sensing circuit, ADC (for processing the measurement results of the sensing circuit analog to digital converter ) 560a and an illuminance calculation circuit 570a.

According to various embodiments, the display 510a may be a display having the stacked structure illustrated in FIG. 3A or 3C . The cathode 521a is displayed separately from the display 510a for convenience, but the cathode 521a is included in the display 510a. A cathode (521a), a sensing resistance (R _S) (530a), and with respect to the PMIC (522a) is a cathode (310b) described hereinabove with reference to Figure 3b, a sensing resistance (R _S) (340b), and a PMIC (350b) Since the description of , may be equally applied, it will not be repeated herein.

The exemplary sensing circuit shown in FIG. 5A includes a first resistor (R _IN ) 541a , a second resistor (R _IN ) 542a , an amplifier 540a , a transistor 550a , and a third resistor (R _L ). (543a). For example, the resistance values of the first resistor (R _IN ) 541a and the second resistor (R _IN ) 542a may be the same.

One end of the first resistor (R _IN ) 541a is connected to one end of the sensing resistor (RS) 530a, and the other end of the first resistor (R _IN ) 541a is connected to the first input terminal of the amplifier 540a. can One end of the second resistor is connected to the other end of the sensing resistance (R _S) (530a), the other terminal of the second resistor may be connected to the second input terminal of the amplifier (540a). The gate of the transistor 550a is connected to the output terminal of the amplifier 540a, the drain of the transistor 550a is connected to the second input terminal of the amplifier 540a, and the source of the transistor 550a is a third resistor R _L . 543a. One end of the third resistor (R _L ) 543a may be connected to the source of the transistor 550a , and _{the other end of the third resistor (R L} ) 543a may be connected to the ground.

The flow to the third resistance (R _L) (543a) of the transistors sensing resistance (R _S) through the (530a) a cathode (521a) from one voltage V _OUT and, PMIC (522a) of which is connected to a source of (550a) The relationship between the currents I _L is as follows.

According to various embodiments, one _{end of the voltage V OUT} connected to the source of the transistor 550a of _{the third resistor (R L} ) 543a may be converted into a digital signal by the ADC 560a. That is, in the example shown in FIG. 5A , the sensing circuit _{measures the voltage V OUT} of one end connected to the source of the transistor 550a _{of the third resistor (R L} ) 543a, and the ADC 560a is connected to the sensing circuit. It is possible to convert a signal representing _{V OUT} which is the measured information into a digital signal.

_{According to various embodiments, a digital signal representing V OUT} output by the ADC 560a may be processed by the illuminance calculation circuit 570a. For example, the roughness calculation circuit (570a) may process the digital signal representing the V _OUT by checking the average value of the digital signal representing the V _OUT. For example, the roughness calculation circuit (570a) can determine the average value for a predetermined period of the digital signal representing the V _OUT by calculating or determining the average value during a predetermined period of the digital signal representing the V _OUT. For example, the illuminance calculation circuit 570a may process the digital signal representing _{V OUT} by checking an average value in which only a value included within a specific range among values during a predetermined period of the digital signal representing _{V OUT is considered.} According to various embodiments, the illuminance calculation circuit 570a may calculate or determine an average value using an exponential moving average. In addition, the method for processing the digital signal output by the ADC 560a is not limited.

According to various embodiments, the ADC 560a or the illuminance calculation circuit 570a may be included in a microcontroller unit (MCU) of the touch sensor IC 253 . When the illuminance calculation circuit 570a is included in the MCU of the touch sensor IC 253 , the MCU may check the illuminance based on a value confirmed as a result of processing by the illuminance calculation circuit 570a. According to other various embodiments, the illuminance calculation circuit 570a is included in the MCU of the touch sensor IC 253, and the MCU transmits a value confirmed as a result of processing by the illuminance calculation circuit 570a to the application processor, The application processor may check the illuminance based on the received value. According to other various embodiments, a part of the operation of the illuminance calculation circuit 570a may be performed by the MCU, and another part may be performed by the application processor. That is, the illuminance calculation circuit 570a may be partially implemented in the MCU and partially implemented as an application processor. According to other various embodiments, at least a part or all of the operation of the illuminance calculation circuit 570a may be implemented in the application processor.

5B illustrates an example of an output voltage for illuminance sensing according to various embodiments. The curve 510b represents _{V OUT} when a touch on the bezel of the display device 160 occurs. The curve 520b represents _{V OUT} when hovering occurs on the display device 160 . When the bezel of the display device 160 is touched, since the display device 160 is not covered by the user's hand, V _OUT of the curve 510b may represent a constant value. Although not shown in FIG. 5B , even when the bezel of the display device 160 is touched, the display device 160 may be partially covered by the user's hand. In this case, V _OUT is a constant value of the curve 510b. It may represent a lower value, and may represent a non-constant value.

When wake hovering is going on the display device 160, display device 160 is therefore covered by the user's hand V _OUT of the curve (520b) indicates a value lower than a certain value that is V _OUT of the curve (510b) , which may represent an inconsistent value.

6 illustrates a layout for resistor production in accordance with various embodiments. Specifically, FIG. 6 shows a layout arrangement 600 for producing the third resistor 543a and the first resistor 541a or the second resistor 542a shown in FIG. 5A . Layout arrangement 600 may include a number of partial resistors 631 - 642 and 661 - 672 . The terminal 621 may be connected in series with the partial resistors 631 to 642 , and may be connected to the terminal 622 through the partial resistors 631 to 642 . In this case, the equivalent resistance between the terminal 621 and the terminal 622 may be the sum of the partial resistances 631 to 642 . The terminal 651 may be connected in series with the partial resistors 661 to 672 , and may be connected to the terminal 652 through the partial resistors 661 to 672 . In this case, the equivalent resistance between the terminal 651 and the terminal 652 may be the sum of the partial resistances 661 to 672 .

According to various embodiments, the partial resistors 631 to 642 between the terminal 621 and the terminal 622 constitute the third resistor 543a, and according to various embodiments, the terminal 651 and the terminal 652. ) between the partial resistors 661 to 672 may constitute a first resistor 541a or a second resistor 542a.

In the layout arrangement 600 of FIG. 6 , partial resistors 661 to 672 constituting the first resistor 541a or the second resistor 542a and partial resistors 631 to 642 constituting the third resistor 543a. ) can be arranged in a mixed form. For example, partial resistors 661 and 662 constituting the first resistor 541a or the second resistor 542a may be positioned adjacent to the partial resistor 631 constituting the third resistor 543a. .

Although the diffusion direction 610 of the diffusion process is indicated in the layout arrangement 600 of FIG. 6 , and diffusion in the diffusion direction 610 does not occur uniformly, the first resistor 541a or the second resistor Since the partial resistors 661 to 672 constituting the 542a and the partial resistors 631 to 642 constituting the third resistor 543a are arranged in a mixed form, the first resistor 541a or the second resistor 541a An error may occur in the absolute values of the 542a and the third resistor 543a due to non-uniform diffusion. The error may be limited. In Equation 1, the proportional constant in which the leakage current and V _OUT are directly proportional is affected by the ratio of the first resistor 541a or the second resistor 542a and the third resistor 543a, so the first resistor 541a or By limiting the error occurring in the ratio of the second resistor 542a and the third resistor 543a, it is possible to limit the error in the process of checking the leakage current value from _{V OUT .}

According to various other embodiments, contrary to the example described above, the partial resistors 631 to 642 between the terminal 621 and the terminal 622 constitute a first resistor 541a or a second resistor 542a and , according to various embodiments, it will be understood by those skilled in the art that the partial resistors 661 to 672 between the terminal 651 and the terminal 652 may constitute the third resistor 543a.

7 illustrates a system architecture including a touch sensor IC, a display, and a PMIC, in accordance with various embodiments. According to various embodiments, the touch sensor IC 710 includes an analog front end (AFE) 711 , an AFE controller 712 , a sensing circuit 713 , an eFlash 714 , a Data SRAM 715 , and an MCU 716 ). , and a touch hardware engine 717 . According to various embodiments, the AFE 711 may receive an analog touch signal from the touch sensor 720 and transmit a current or voltage signal corresponding to the analog touch signal to the AFE controller 712 . The analog touch signal may indicate a change in capacitance sensed by the touch sensor 720 . According to various embodiments, the AFE 711 may receive at least one of a self-capacitive touch signal or a mutual capacitive touch signal from the touch sensor 720 . According to various embodiments, the eFlash 714 and the Data SRAM 715 may store various data for controlling the operation of the touch sensor 720 .

According to various embodiments, the current flowing from the cathode of the touch sensor 720 through the sensing resistor (eg, 340d) included in the PMIC 730 or the voltage across the sensing resistor is to be determined by the sensing circuit 713 . can As described above in the example of FIG. 5A , the sensing circuit 713 may transmit a signal corresponding to the measurement result to the MCU 716 .

According to various embodiments, the MCU 716 controls the operation of the touch sensor 720 , determines an illuminance value based on a signal transmitted from the sensing circuit 713 , or receives a signal transmitted from the sensing circuit 713 . It may be converted into a digital form and then processed, or the processed signal may be transmitted to the application processor so that the application processor can determine the illuminance value.

8 is a flowchart 800 for explaining an operation of an electronic device according to various embodiments of the present disclosure. In operation 810 , the MCU 716 included in the touch sensor IC 253 may detect a touch signal from the touch sensor 251 . In operation 820 , the MCU 716 may determine whether the voltage of the sensed touch signal is equal to or greater than a first threshold. According to various embodiments, the voltage of the touch signal compared with the first threshold in operation 820 may be a signal output in response to a touch on all areas on the touch sensor 251 .

According to various embodiments, when it is determined that the voltage of the sensed touch signal is less than the first threshold, the MCU 716 may return to operation 810 . When it is determined that the voltage of the sensed touch signal is equal to or greater than the first threshold, the MCU 716 may control the touch sensor 251 to detect hovering in operation 830 . 8 shows that the MCU 716 returns to operation 810 when it is determined that the voltage of the sensed touch signal is less than the first threshold, but according to various embodiments, the voltage of the sensed touch signal is the first threshold. An example in which the method is terminated when it is determined that the threshold value is less than the threshold is also possible.

When the touch sensor 251 is controlled to detect hovering, the touch sensor 251 generates a touch signal for a specific area corresponding to one or more channels among a plurality of areas on the touch sensor 251 divided into a plurality of channels. Voltage can be detected separately. For example, when the touch sensor 251 is the touch sensor 900 illustrated in FIG. 9 , the touch sensor 900 may be divided into a plurality of regions to correspond to a plurality of channels.

In operation 840 , the MCU 716 may determine whether the voltage of the touch signal from at least one channel adjacent to the outermost of the touch sensor 251 is equal to or greater than the second threshold. Here, the channels adjacent to the outermost channel may include the outermost channel and channels located within one or two pixels from the outermost channel. In the example of FIG. 9 , the MCU 716 may determine whether the voltage of the touch signal from the N channels 910 closest to the outermost is equal to or greater than the second threshold.

According to various embodiments, when it is determined that the voltage of the touch signal from the N channels 910 closest to the outermost of the touch sensor 251 is less than the second threshold in operation 840 , the MCU 716 performs operation 830 can go back to 8 shows that the MCU 716 returns to operation 830 when it is confirmed that the voltage of the touch signal from the N channels 910 closest to the outermost is less than the second threshold, but in various embodiments Accordingly, an example in which the method ends when it is confirmed that the voltage of the touch signal from the N channels 910 closest to the outermost is less than the second threshold is also possible.

When it is confirmed in operation 840 that the voltage of the touch signal from the N channels 910 closest to the outermost of the touch sensor 251 is equal to or greater than the second threshold, the MCU 716 performs the measurement result of the sensing circuit in operation 850 . Based on the illuminance can be confirmed. According to various embodiments, it is confirmed that the voltage of the touch signal from the N channels 910 closest to the outermost is equal to or greater than the second threshold is that hovering over the touch sensor 251 or a bezel touch is made. can mean that

In operation 860, the MCU 716 may determine whether the checked illuminance is equal to or greater than a third threshold. If the checked illuminance is equal to or greater than the third threshold, the MCU 716 may confirm that the bezel touch has been made in operation 870 . When the checked illuminance is less than the third threshold, the MCU 716 may confirm that hovering has been performed in operation 880 .

Although it has been described above that operations 810 to 880 are all performed by the MCU 716, some operations may be performed by another processor in the electronic device 101, such as an application processor, according to various embodiments. For example, operation 850 may be performed by the application processor, and in this example, the MCU 716 determines whether the voltage of the touch signal from at least one channel closest to the outermost of the touch sensor is greater than or equal to the second threshold. In operation 840, when it is confirmed that the voltage of the touch signal from at least one channel close to the outermost of the touch sensor is equal to or greater than the second threshold, the application processor is notified that the voltage of the touch signal is equal to or greater than the second threshold. can According to various embodiments, operations 860 to 880 may be performed by another processor in the electronic device 101, such as an application processor.

Also, according to various embodiments, operations 810 to 830 may be omitted differently from that illustrated in FIG. 8 .

In the operations shown in FIG. 8, when it is confirmed that the voltage of the touch signal from at least one channel close to the outermost of the touch sensor is greater than or equal to the second threshold, by checking whether it is a bezel touch or hovering in consideration of the illuminance value, Compared to a case where only the voltage of the touch signal is used, the possibility that the bezel touch is misrecognized as hovering or that the hovering is misrecognized as the bezel touch can be reduced.

10 is a flowchart 1000 illustrating an operation of an electronic device according to various embodiments of the present disclosure. In operation 1010 , the MCU 716 included in the touch sensor IC 253 may check the illuminance based on the measurement result of the sensing circuit 713 . In operation 1020 , the MCU 716 may determine whether the checked illuminance is equal to or greater than a fourth threshold. When the checked illuminance is equal to or greater than the fourth threshold, the MCU 716 may determine that the external object is not close to the electronic device 101 in operation 1030 . Alternatively, when the identified illuminance is less than the fourth threshold, the MCU 716 may determine that the external object approaches the electronic device 101 in operation 1040 . When the external object is close to the electronic device 101 , it is highly probable that the illuminance around the touch sensor 251 will be lowered. Therefore, a low checked illuminance may indicate proximity of the external object, and a high checked illuminance may indicate an external object. may indicate that they are not close.

All operations 1010 to 1040 have been described above as being performed by the MCU 716 , but according to various embodiments, some operations may be performed by another processor in the electronic device 101 such as an application processor. For example, all operations 1010 to 1040 may be performed by the application processor. In this example, the MCU 716 applies the measurement result of the sensing circuit 713 or a signal processed by the measurement result of the sensing circuit 713 to the application. may be transmitted to the processor, and the application processor may perform operation 1010 by checking the illuminance based on the received signal. According to various embodiments, operation 1010 may be performed by the MCU 716 , and operations 1020 to 1040 may be performed by an application processor. In this case, the MCU 716 that has performed operation 1010 may transmit a signal corresponding to the checked illuminance to the application processor, and the application processor may perform operation 1020 based on the received signal.

By performing the operation illustrated in FIG. 10 , the electronic device 101 may determine whether an external object approaches the electronic device 101 without mounting a separate proximity sensor element.

11 is a flowchart 1100 illustrating an operation of an electronic device according to various embodiments of the present disclosure. In operation 1110 , the processor 120 of the electronic device 101 may check the value sensed by the proximity sensor and check the illuminance based on the measurement result of the sensing circuit 713 . According to various embodiments, the processor 120 of the electronic device 101 may check a sensed value based on an electrical signal received from a proximity sensor included in the electronic device 101 . According to various embodiments, the processor 120 of the electronic device 101 may apply a determination algorithm to the sensing value of the proximity sensor and the sensing value of the sensing circuit 713 to determine whether an external object is in proximity. For example, the discrimination algorithm may include at least one of a support vector machine, a neural network, or a Bayesian classifier. According to various embodiments, the discrimination algorithm is not limited to the above-described support vector machine, neural network, or bayesian classifier, and various discrimination algorithms other than the above-described examples may be used.

In operation 1120 , the processor 120 may determine whether the value sensed by the proximity sensor indicates proximity of an external object. According to various embodiments of the present disclosure, in operation 1110 , the processor 120 may receive a signal indicating whether an external object is in proximity from the proximity sensor without checking a sensing value of the proximity sensor.

When the sensing value of the proximity sensor indicates proximity of an external object, in operation 1130 , the processor 120 may determine whether the illuminance checked in operation 1110 is equal to or greater than a fourth threshold value. When it is determined in operation 1130 that the illuminance is equal to or greater than the fourth threshold value, in operation 1140 , the processor 120 may determine that the external object is not close. When it is determined in operation 1130 that the illuminance is less than the fourth threshold value, in operation 1150 , the processor 120 may determine that the external object is close.

When the sensing value of the proximity sensor does not indicate the proximity of the external object, in operation 1160 , the processor 120 may determine whether the illuminance checked in operation 1110 is equal to or greater than a fourth threshold value. When it is determined in operation 1160 that the illuminance is equal to or greater than the fourth threshold value, in operation 1170 , the processor 120 may determine that the external object is not close. When it is determined in operation 1160 that the illuminance is less than the fourth threshold value, in operation 1180 , the processor 120 may determine that the external object approaches.

According to the operations illustrated in FIG. 11 , in addition to the value sensed by the proximity sensor, the reliability of the determination of proximity may be increased by performing a cross check using the illuminance confirmed in operation 1110 .

According to various embodiments, the electronic device 101 includes a light emitting element 320b connected to the cathode 310b of the display 210 of the electronic device 101, a light emitting element 320b connected to the cathode 310b, and the light emitting element ( A sensing circuit 360b configured to detect a leakage current from 320b), and at least one processor 716 configured to check illuminance based on the detection result of the sensing circuit 360b.

According to various embodiments, the electronic device 101 may include a touch sensor 251 .

According to various embodiments, the at least one processor 716 may be configured to perform at least one of a bezel touch or hovering based on a touch signal from at least one channel proximate to the outermost portion of the touch sensor 251 and the identified illuminance. can be set to detect

According to various embodiments, the at least one processor 716 may determine that a voltage of a touch signal from at least one channel proximate to the outermost of the touch sensor 251 is equal to or greater than a first threshold, and the identified illuminance is When it is equal to or greater than the second threshold, it is confirmed that a bezel touch has been made, the voltage of the touch signal from at least one channel closest to the outermost of the touch sensor 251 is equal to or greater than the first threshold, and the checked illuminance is the If it is less than the second threshold value, it may be set to confirm that hovering has been performed.

According to various embodiments, the at least one processor 716 controls the touch sensor 251 to detect hovering when the voltage of the touch signal from the touch sensor 251 is equal to or greater than a third threshold, When the touch sensor 251 is controlled to detect hovering, it may be configured to check a voltage of a touch signal from at least one channel adjacent to the outermost of the touch sensor 251 .

According to various embodiments of the present disclosure, the electronic device 101 further includes a proximity sensor, and the at least one processor 716 determines whether an object is in proximity based on a sensing value of the proximity sensor and the identified illuminance. can be set to

According to various embodiments, the at least one processor 716 is configured to confirm that the object is not close when the sensed value of the proximity sensor indicates proximity of an object, and the checked illuminance is greater than or equal to a fourth threshold value, , when the sensing value of the proximity sensor indicates that the object is not close, and the checked illuminance is less than the fourth threshold value, it may be set to confirm that the object is close.

According to various embodiments, the electronic device 101 includes an analog to digital converter (ADC) configured to convert a signal representing the information measured by the sensing circuit 360b to digital, and the digitally converted signal. It may further include an illuminance calculation circuit configured to process.

According to various embodiments, the illuminance calculation circuit may be configured to output an average value for a predetermined period of the digitally converted signal.

According to various embodiments, the ADC and the illuminance calculation circuit may be integrated in the touch sensor IC 253 of the electronic device 101 .

According to various embodiments, the electronic device 101 further includes a sensing resistor 340b through which a leakage current from the light emitting device flows, and the sensing resistor 340b is a power management (PMIC) of the electronic device 101 . integrated circuit).

According to various embodiments, the electronic device 101 further includes a sensing resistor 340b through which a leakage current from the light emitting device flows, and one end of the sensing resistor 340b is connected to the cathode 310b, The other end of the sensing resistor 340b may be connected to the PMIC of the electronic device 101 .

According to various embodiments, the sensing circuit 360b includes a first resistor, a second resistor, a third resistor, an amplifier, and a transistor, and one end of the first resistor is connected to the one end of the sensing resistor 340b. connected, the other end of the first resistor is connected to a first input terminal of the amplifier, one end of the second resistor is connected to the other end of the sensing resistor 340b, and the other end of the second resistor is connected to the amplifier. connected to a second input, a gate of the transistor connected to an output of the amplifier, a drain of the transistor connected to the second input of the amplifier, a source of the transistor connected to the third resistor, and One end of the third resistor is connected to the source of the transistor, the other end of the third resistor is connected to the ground, and the information measured by the sensing circuit 360b is the voltage of the one end of the third resistor. can

According to various embodiments, the sensing circuit 360b may be integrated in the touch sensor IC 253 .

According to various embodiments, the structure may include a substrate on which a TFT structure for displaying 210 at least one screen is disposed; an encapsulation layer disposed on the TFT structure; A touch sensor 251 including a plurality of electrodes disposed on the encapsulation layer, a light emitting device 320b connected to the TFT structure, and a cathode 310b for the plurality of electrodes, and connected to the cathode 310b A sensing circuit 360b configured to measure information related to at least one of a sensing resistor 340b through which a leakage current from the light emitting device 320b flows, the leakage current or a voltage across the sensing resistor 340b, and At least one processor 716 configured to check the illuminance based on the detection result of the sensing circuit 360b may be included.

According to various embodiments, the at least one processor 716 is configured to detect at least one of a bezel touch or hovering based on the identified illuminance and a touch signal from at least one channel proximate to the outermost of the touch sensor. can be set.

According to various embodiments, the at least one processor 716 controls the touch sensor 251 to detect hovering when the voltage of the touch signal from the touch sensor 251 is equal to or greater than a third threshold, When the touch sensor 251 is controlled to detect hovering, it may be configured to check a voltage of a touch signal from at least one channel adjacent to the outermost of the touch sensor 251 .

According to various embodiments, the at least one processor 716 determines that the object is not close when the identified illuminance is equal to or greater than a fourth threshold, When the checked illuminance is less than the fourth threshold value, it may be set to confirm that the object is close.

According to various embodiments, the at least one processor 716 may be configured to digitally convert a signal representing the information measured by the sensing circuit 360b and process the digitally converted signal. have.

According to various embodiments, the at least one processor 716 may be configured to process the digitally converted signal by checking an average value for a predetermined period of the digitally converted signal.

The various embodiments of this document and the terms used therein are not intended to limit the technology described in this document to a specific embodiment, but it should be understood to cover various modifications, equivalents, and/or substitutions of the embodiments. In connection with the description of the drawings, like reference numerals may be used for like components. The singular expression may include the plural expression unless the context clearly dictates otherwise. In this document, expressions such as “A or B”, “at least one of A and/or B”, “A, B or C” or “at least one of A, B and/or C” refer to all of the items listed together. Possible combinations may be included. Expressions such as “first”, “second”, “first” or “second” can modify the corresponding components regardless of order or importance, and are only used to distinguish one component from another. The components are not limited. When an (eg, first) component is referred to as being “connected (functionally or communicatively)” or “connected” to another (eg, second) component, that component is It may be directly connected to the component or may be connected through another component (eg, a third component).

As used herein, the term “module” includes a unit composed of hardware, software, or firmware, and may be used interchangeably with terms such as, for example, logic, logic block, component, or circuit. A module may be an integrally formed part or a minimum unit or a part of one or more functions. For example, the module may be configured as an application-specific integrated circuit (ASIC).

Various embodiments of the present document include instructions stored in a machine-readable storage media (eg, internal memory 136 or external memory 138) that can be read by a machine (eg, a computer). It may be implemented as software (eg, the program 140). The device is a device capable of calling a stored command from a storage medium and operating according to the called command, and may include an electronic device (eg, the electronic device 101 ) according to the disclosed embodiments. When the instruction is executed by a processor (eg, the processor 120), the processor may directly or use other components under the control of the processor to perform a function corresponding to the instruction. Instructions may include code generated or executed by a compiler or interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' means that the storage medium does not include a signal and is tangible, and does not distinguish that data is semi-permanently or temporarily stored in the storage medium.

According to an example, the method according to various embodiments disclosed in this document may be included and provided in a computer program product. Computer program products may be traded between sellers and buyers as commodities. The computer program product may be distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)) or online through an ^{application store (eg Play Store TM ).} In the case of online distribution, at least a part of the computer program product may be temporarily stored or temporarily generated in a storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.

Each of the components (eg, a module or a program) according to various embodiments may be composed of a singular or a plurality of entities, and some sub-components of the aforementioned sub-components may be omitted, or other sub-components may be It may be further included in various embodiments. Alternatively or additionally, some components (eg, a module or a program) may be integrated into a single entity to perform the same or similar functions performed by each corresponding component prior to integration. According to various embodiments, operations performed by a module, program, or other component are executed sequentially, parallel, iteratively, or heuristically, or at least some operations are executed in a different order, are omitted, or other operations are added. can be

Claims (20)

In an electronic device,
a light emitting element connected to the cathode of the display of the electronic device;
A sensing circuit connected to the cathode and configured to detect a leakage current from the light emitting device, and
at least one processor configured to check illuminance based on the detection result of the sensing circuit
An electronic device comprising a. According to claim 1,
The electronic device includes a touch sensor. 3. The method of claim 2,
the at least one processor,
The electronic device is configured to detect at least one of a bezel touch or a hovering based on the identified illuminance and a touch signal from at least one channel proximate to an outermost portion of the touch sensor. 4. The method of claim 3,
the at least one processor,
When the voltage of the touch signal from at least one channel close to the outermost of the touch sensor is greater than or equal to a first threshold and the checked illuminance is greater than or equal to a second threshold, it is confirmed that a bezel touch has been made;
When the voltage of the touch signal from at least one channel close to the outermost of the touch sensor is equal to or greater than the first threshold, and the checked illuminance is less than the second threshold, it is confirmed that hovering has been performed
An electronic device configured to do so. 5. The method of claim 4,
the at least one processor,
When the voltage of the touch signal from the touch sensor is greater than or equal to a third threshold, controlling the touch sensor to detect hovering,
and check a voltage of a touch signal from at least one channel proximate to an outermost portion of the touch sensor when the touch sensor is controlled to detect hovering. According to claim 1,
The electronic device further includes a proximity sensor,
the at least one processor,
The electronic device is configured to determine whether an object is in proximity based on the sensed value of the proximity sensor and the identified illuminance. 7. The method of claim 6,
the at least one processor,
When the sensed value of the proximity sensor indicates proximity of an object, and the checked illuminance is equal to or greater than a fourth threshold, it is confirmed that the object is not close;
and when the sensed value of the proximity sensor indicates that the object is not close, and the identified illuminance is less than the fourth threshold value, confirm that the object is close. According to claim 1,
ADC (analog to digital converter) set to digitally convert a signal representing the leakage current detected by the sensing circuit, and
and an illuminance calculation circuit configured to process the digitally converted signal. 9. The method of claim 8,
and the illuminance calculation circuit is configured to output an average value for a predetermined period of the digitally converted signal. 9. The method of claim 8,
and the ADC and the illuminance calculation circuit are integrated in a touch sensor IC of the electronic device. According to claim 1,
The electronic device further includes a sensing resistor through which a leakage current from the light emitting device flows,
The sensing resistor is included in a power management integrated circuit (PMIC) of the electronic device. According to claim 1,
The electronic device further includes a sensing resistor through which a leakage current from the light emitting device flows, one end of the sensing resistor connected to the cathode, and the other end of the sensing resistor connected to the PMIC of the electronic device. According to claim 1,
The sensing circuit includes a first resistor, a second resistor, a third resistor, an amplifier, and a transistor,
One end of the first resistor is connected to the one end of the sensing resistor, the other end of the first resistor is connected to the first input terminal of the amplifier,
One end of the second resistor is connected to the other end of the sensing resistor, and the other end of the second resistor is connected to a second input terminal of the amplifier,
the gate of the transistor is connected to the output of the amplifier, the drain of the transistor is connected to the second input of the amplifier, the source of the transistor is connected to the third resistor,
One end of the third resistor is connected to the source of the transistor, and the other end of the third resistor is connected to the ground,
and the sensing circuit is configured to detect the voltage of the one end of the third resistor. 3. The method of claim 2,
wherein the sensing circuit is integrated in a touch sensor IC. a substrate on which a TFT structure for displaying at least one screen is disposed;
an encapsulation layer disposed on the TFT structure;
A touch sensor including a plurality of electrodes, which is disposed on the encapsulation layer;
a light emitting element connected to the TFT structure and a cathode for the plurality of electrodes; and
A sensing circuit connected to the cathode and configured to detect a leakage current from the light emitting device, and
and at least one processor configured to check the illuminance based on the detection result of the sensing circuit. 16. The method of claim 15,
the at least one processor,
configured to detect at least one of bezel touch or hovering based on the identified illuminance and a touch signal from at least one channel proximate to the outermost of the touch sensor. 17. The method of claim 16,
the at least one processor,
When the voltage of the touch signal from the touch sensor is greater than or equal to a third threshold, controlling the touch sensor to detect hovering,
configured to ascertain a voltage of a touch signal from at least one channel proximate an outermost of the touch sensor when the touch sensor is controlled to detect hovering. 16. The method of claim 15,
the at least one processor,
If the identified illuminance is greater than or equal to the fourth threshold, it is confirmed that the object is not close,
and confirm that the object is proximate when the identified illuminance is less than the fourth threshold. 16. The method of claim 15,
the at least one processor,
Converting the signal representing the leakage current measured by the sensing circuit to digital,
configured to process the digitally converted signal. 20. The method of claim 19,
the at least one processor,
and process the digitally converted signal by ascertaining an average value over a predetermined period of the digitally converted signal.

Images