Pixel circuit, display panel and electronic equipment

Abstract

The utility model provides a pixel circuit, a display panel and electronic equipment, the pixel circuit comprises a first transistor and a second transistor, the control end of the first transistor is connected with a scanning line and a data line, the first access end of the first transistor is connected with a first power supply end, and the second access end of the first transistor is connected with the anode of a light emitting device; the cathode of the light-emitting device is connected with the second power end, the first access end of the second transistor is connected with the second access end of the first transistor, and the control end and the second access end of the second transistor are grounded. In the embodiment of the invention, through the grounding branch where the second transistor is located, the current generated by the irradiation of the infrared light signal can be grounded, the problem of light spots caused by the current passing through the light-emitting device is avoided, and the user experience is improved. Moreover, the algorithm is simple, the screen power consumption is lower, the sensor position is not required, and the distance detection effect and stability are improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic devices, and in particular to a pixel circuit, a display panel and an electronic device. Background Art

[0002] Compared with traditional screen devices, full-screen devices have larger display areas and visual effects, so today's mobile terminals generally use full-screen. In order to reduce the screen opening of full-screen devices, optical distance sensors have developed into under-screen solutions, that is, infrared distance sensors are placed under the screen and distance detection is achieved using the screen pixel gap.

[0003] However, since the pixel driving circuit of the OLED (Organic Light-Emitting Diode) screen will be stimulated to turn on in the infrared band, it will cause light spots on the screen, affecting the user experience. Utility Model Content

[0004] In order to solve the problem of screen light spots, one or more embodiments of the present disclosure provide a pixel circuit, a display panel and an electronic device.

[0005] In a first aspect, the present disclosure provides a pixel circuit, comprising:

[0006] a first transistor, wherein a control end of the first transistor is connected to a scan line and a data line, a first path end of the first transistor is connected to a first power supply end, a second path end of the first transistor is connected to an anode of a light emitting device, and a cathode of the light emitting device is connected to a second power supply end;

[0007] A second transistor, wherein a first channel terminal of the second transistor is connected to a second channel terminal of the first transistor, and a control terminal and a second channel terminal of the second transistor are grounded.

[0008] In some embodiments, a third transistor is further included, wherein a control terminal of the third transistor is connected to the scan line, a first channel terminal of the third transistor is connected to the data line, and a second channel terminal of the third transistor is connected to the control terminal of the first transistor.

[0009] In some embodiments, a first capacitor is further included, wherein one electrode of the first capacitor is connected to the control terminal of the first transistor, and the other electrode of the first capacitor is connected to the first power supply terminal.

[0010] In some embodiments, the first transistor, the second transistor, and the third transistor are MOS transistors, wherein the first path end is one of the source or the drain of the MOS transistor, the second path end is the other of the source or the drain of the MOS transistor, and the control end is the gate of the MOS transistor.

[0011] In some embodiments, the light emitting device is an OLED light emitting device.

[0012] In a second aspect, the present disclosure provides a display panel, comprising pixel points arranged in an array on a substrate layer, each pixel point comprising a pixel circuit according to any embodiment of the first aspect.

[0013] In a third aspect, the present disclosure provides an electronic device, comprising the display panel according to any embodiment of the second aspect.

[0014] In some embodiments, a distance sensor is further included. The distance sensor is disposed on one side of the display panel, and a detection end of the distance sensor is spaced apart from the display panel.

[0015] In some embodiments, the distance sensor is an infrared distance sensor, and the detection end includes an infrared transmitting end and an infrared receiving end, the infrared transmitting end is used to transmit an infrared light signal toward the display panel, and the infrared receiving end is used to receive the infrared light signal.

[0016] In some embodiments, the electronic device comprises a smartphone or a tablet computer.

[0017] The pixel circuit of the embodiment of the present disclosure includes a first transistor and a second transistor, the control end of the first transistor is connected to the scan line and the data line, the first path end of the first transistor is connected to the first power supply end, the second path end of the first transistor is connected to the anode of the light-emitting device, the cathode of the light-emitting device is connected to the second power supply end, the first path end of the second transistor is connected to the second path end of the first transistor, and the control end and the second path end of the second transistor are grounded. In the embodiment of the present disclosure, the current generated by the infrared light signal irradiation can be grounded through the grounding branch where the second transistor is located, avoiding the light spot problem caused by the current passing through the light-emitting device, thereby improving the user experience. In addition, compared with the solution of covering up the light spot problem through timing coordination, the algorithm of the embodiment of the present disclosure is simpler, the screen power consumption is lower, and there is no requirement for the position of the sensor, thereby improving the distance detection effect and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the specific embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a structural schematic diagram of an electronic device in the related technology.

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of an electronic device in the related technology.

[0021] Figure 3 is a circuit diagram of a pixel circuit in the related art.

[0022] Figure 4 is a circuit diagram of a pixel circuit according to some embodiments of the present disclosure.

[0023] Figure 5 is a circuit diagram of a pixel circuit according to some embodiments of the present disclosure.

[0024] Figure 6 is a circuit diagram of a pixel circuit according to some embodiments of the present disclosure.

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of an electronic device according to some embodiments of the present disclosure.

[0026] Figure 8 It is a structural block diagram of an electronic device according to some implementations of the present disclosure. DETAILED DESCRIPTION

[0027] The technical solution of the present disclosure will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described implementation is a part of the implementation of the present disclosure, rather than all the implementations. Based on the implementation in the present disclosure, all other implementations obtained by ordinary technicians in the field without creative work are within the scope of protection of the present disclosure. In addition, the technical features involved in the different implementations of the present disclosure described below can be combined with each other as long as they do not conflict with each other.

[0028] Compared with traditional screens, full screens have a larger display area and more visual effects, so today's mobile terminals generally use full screens. Taking smartphones as an example, distance sensors are the main components for realizing functions such as automatic screen off when answering a call. Currently, infrared optical distance sensors are one of the main solutions for distance detection.

[0029] In order to reduce the screen opening of the full screen, the mainstream infrared optical distance sensor has now developed into an under-screen solution, such as Figure 1 In this example, the infrared sensor is set below the phone screen. Figure 1 Indicated by dotted line. Figure 2 Shows Figure 1 The cross-sectional view, combined with Figure 2As shown, the infrared sensor is arranged on the inner side of the mobile phone screen, so that when detecting the distance, the infrared sensor transmits an infrared light signal through the mobile phone screen. After being reflected by the human body or other objects, the reflected signal passes through the mobile phone screen and is received by the infrared sensor. After a series of detection algorithms, the distance between the human body or other objects and the mobile phone can be determined.

[0030] However, the OLED (Organic Light-Emitting Diode) light-emitting device of the mobile phone screen will emit light when excited by infrared light (wavelength 760nm~1000nm), especially under the irradiation of infrared light with a wavelength of 940nm, the OLED device will emit light incorrectly and cause light spots to appear on the screen.

[0031] Figure 3 FIG. 4 shows a circuit structure of a pixel driving circuit in the related art. Figure 3 The example is the most commonly used 2T1C pixel driving circuit in the related art. 2T1C means that the pixel driving circuit includes two TFTs (Thin Film Transistors, thin film field effect transistors) and one capacitor C. For example Figure 3 As shown, the two TFTs are transistor T1 and transistor T2, and the one capacitor is capacitor C. Data is the data line voltage, Scan is the scan line voltage, ELVDD is the high level voltage, ELVSS is the low level voltage, and Diode is the light emitting device.

[0032] Combined with the above, it can be known that under the irradiation of the 940nm infrared light of the infrared sensor, the transistors T1 and T2 will be excited, causing the transistors T1 and T2 to be turned on, see Figure 3 As shown, since the transistor T1 is turned on, the current path formed by the high level voltage ELVDD, the light emitting device Diode, and the low level voltage ELVSS is turned on, and the light emitting device Diode emits light to form a light spot on the screen.

[0033] In order to reduce the impact of light spots, the relevant technology mainly alleviates this problem through timing control algorithms, that is, by coordinating the emission time of infrared light signals with the refresh time of screen pixels, and emitting infrared light signals when the screen pixels are about to be refreshed to the infrared sensor area, so that even if the pixels are excited by 940nm infrared light to produce light spots, the screen pixels in this area can be quickly refreshed, making it impossible for users to perceive the existence of light spots, reducing the impact on users.

[0034] However, this method cannot solve the light spot problem, it can only reduce the user's visual perception of the light spot. When the user is sensitive to changes in brightness, the light spot effect can still be observed. In addition, since the timing coordination of the pixel area is required, the algorithm process is complex, which leads to increased screen power consumption. At the same time, there are strict regulations on the layout position of the infrared sensor, which requires that the sensor should not be too close to the earpiece, otherwise the algorithm will not have time to respond. However, the farther the sensor is from the earpiece, the higher the risk of misjudgment of automatic screen shutdown, which seriously affects the user experience.

[0035] Based on this, the embodiments of the present disclosure provide a pixel circuit, a display panel having the pixel circuit, and an electronic device having the display panel, aiming to eliminate the screen spot effect caused by the infrared sensor and improve the screen display effect.

[0036] In some embodiments, the present disclosure provides a pixel circuit, which refers to a pixel driving circuit for driving a light-emitting device to emit light, and includes:

[0037] a first transistor, wherein a control end of the first transistor is connected to the scan line and the data line, a first path end of the first transistor is connected to the first power supply end, a second path end of the first transistor is connected to the anode of the light emitting device, and a cathode of the light emitting device is connected to the second power supply end;

[0038] A second transistor, wherein the first channel terminal of the second transistor is connected to the second channel terminal of the first transistor, and the control terminal and the second channel terminal of the second transistor are grounded.

[0039] In the embodiments of the present disclosure, the control terminal refers to the gate (G) of the transistor. By applying a control level to the gate G of the transistor, the on and off of the transistor can be controlled. The first path terminal and the second path terminal refer to the input and output terminals of the transistor, that is, the source S and the drain D. For example, if the first path terminal is a current input terminal (source S), the second path terminal is a current output terminal (drain D). Conversely, if the second path terminal is a current input terminal (source S), the first path terminal is a current output terminal (drain D). The first power supply terminal and the second power supply terminal refer to power supply input and output terminals. For example, if the first power supply terminal is a power supply input terminal (high level ELVDD), the second power supply terminal is a power supply output terminal (low level ELVSS).

[0040] In the embodiment of the present disclosure, the control end of the first transistor is connected to the scan line Scan and the data line Data. The scan line Scan is used to apply a scan line voltage to control the column pixels of the pixel array, and the data line Data is used to write data to control the row pixels of the pixel array. Those skilled in the art can understand this and will not be elaborated in the present disclosure.

[0041] The first channel end of the first transistor is connected to the first power supply terminal ELVDD, the second channel end is connected to the anode of the light emitting device, and the cathode of the light emitting device is connected to the second power supply terminal ELVSS. That is, the first transistor can control the current on and off of the light emitting device, thereby realizing the light emission control of the light emitting device by controlling the on and off of the first transistor.

[0042] For example, when the first transistor is turned on, the input current of the first power supply terminal ELVDD passes through the light-emitting device to the second power supply terminal ELVSS, forming a current path to control the light-emitting device to emit light; when the first transistor is turned off, the input current of the first power supply terminal ELVDD is cut off at the position of the first transistor, and no current passes through the light-emitting device to form a loop, so that the light-emitting device does not emit light.

[0043] According to the above, under the irradiation of the infrared light signal of the infrared sensor, especially under the irradiation of infrared light with a wavelength of 940nm, even if the control end of the first transistor does not receive the control signal, the first transistor can be easily excited and turned on, causing the light-emitting device to emit light incorrectly and causing the display spot problem.

[0044] Therefore, in the embodiment of the present disclosure, a second transistor is provided in the pixel circuit, the first channel end of the second transistor is connected to the second channel end of the first transistor, and the control end and the second channel end of the second transistor are grounded. Under the irradiation of the infrared light signal, the first transistor and the second transistor are both excited and turned on, and after the input current of the first power supply terminal ELVDD passes through the first transistor, since the second transistor is turned on and grounded, the input current will directly pass through the second transistor back to the ground, and will no longer pass through the light-emitting device, thereby avoiding the light spot problem caused by the light-emitting device.

[0045] Figure 4 The circuit diagram of the pixel circuit in some embodiments of the present disclosure is shown below. Figure 3 The pixel circuit structure and principle of the embodiment of the present disclosure are described.

[0046] Reference Figure 4 As shown, the pixel circuit includes a first transistor M1, a second transistor M2 and a third transistor M3.

[0047] The first channel end (i.e., input end) of the first transistor M1 is connected to the first power supply end ELVDD, and the second channel end (i.e., output end) is connected to the anode of the light emitting device Q. In the example disclosed in the present disclosure, the light emitting device Q may be an OLED light emitting device, and the cathode of the light emitting device Q is connected to the second power supply end ELVSS. In this example, the first power supply end ELVDD is a high level end, and ELVSS is a low level end.

[0048] The control end of the first transistor M1 is connected to the second channel end (ie, output end) of the third transistor M3 , the control end of the third transistor M3 is connected to the scan line Scan, and the first channel end (ie, input end) of the third transistor M3 is connected to the data line Data.

[0049] In this example, when the scan line Scan applies a control level, the third transistor M3 is turned on, so that the data line Data can write data to the first transistor M1. When the data line Data applies a control level to the control terminal of the first transistor M1, the first transistor M1 can be turned on.

[0050] In the example disclosed in the present invention, a second transistor M2 is provided in the pixel circuit, a first channel end (i.e., input end) of the second transistor M2 is connected to a second channel end of the first lean transistor M1, and a second channel end (i.e., output end) and a control end of the second transistor M2 are grounded (GND).

[0051] One electrode of the capacitor Cs is connected to the first power supply terminal ELVDD, and the other electrode is connected to the control terminal of the first transistor M1. The capacitor Cs is used to filter the control signal.

[0052] exist Figure 4 In the example, when there is no infrared light signal irradiation, the scan line Scan controls the on-off of the third transistor M3. When the scan line Scan controls the third transistor M3 to be turned on, the data line Data can control the on-off of the first transistor M1.

[0053] In one example, the data line Data controls the first transistor M1 to turn on, and at this time, the input current of the first power supply terminal ELVDD passes through the first transistor M1 and reaches the output terminal of the first transistor M1. It can be understood that since the control terminal of the second transistor M2 is grounded, there is no control level to control the second transistor M2 to turn on, that is, the second transistor M2 is in a normally off state, and at this time, the branch where the second transistor M2 is located is open. Therefore, after the current passes through the first transistor M1, it flows into the anode of the light-emitting device Q, and passes through the cathode of the light-emitting device Q back to the second power supply terminal ELVSS, forming a current back, so that the light-emitting device Q emits light.

[0054] However, see Figure 5 As shown, when an infrared light signal is irradiated, the first transistor M1, the second transistor M2 and the third transistor M3 are excited by the infrared light and are in the on state, especially under the excitation of infrared light with a wavelength of 940nm, the first transistor M1, the second transistor M2 and the third transistor M3 are easily excited and turned on.

[0055] At this time, even if the scan line Scan and the data line Data have no data control level, the first transistor M1 is still in the on state, and the current output by the first power supply terminal ELVDD passes through the first transistor M1 and reaches the output terminal of the first transistor M1. It can be understood that since the second transistor M2 is also excited and turned on, that is, the branch where the second transistor M2 is located is in the off-circuit state, therefore, see Figure 5 It can be seen from the current flow direction indicated by the dotted arrow that after passing through the first transistor M1, the current will directly return to the ground through the second transistor M2 and will not pass through the light-emitting device Q, so that the light-emitting device Q will not emit light, eliminating the influence of the light spot.

[0056] From the above, it can be seen that the pixel circuit of the embodiment of the present disclosure, when irradiated by an infrared light signal, can use the grounding branch where the second transistor M2 is located to ground the current, thereby preventing the current from passing through the light-emitting device Q and causing the light spot problem. Moreover, the second transistor M2 is passively turned on, and there is no need to actively control the on-off, so the control timing of the pixel driving circuit does not need to be changed. Compared with the solution of covering the light spot problem by timing coordination in the related art, the algorithm of the embodiment of the present disclosure is simpler, the screen power consumption is lower, and there is no requirement for the sensor position, thereby improving the distance detection effect and stability.

[0057] From the above, it can be seen that in the embodiment of the present disclosure, the current generated by the infrared light signal can be grounded through the grounding branch where the second transistor is located, avoiding the light spot problem caused by the current passing through the light-emitting device, thereby improving the user experience. In addition, compared with the solution of covering the light spot problem through timing coordination, the algorithm of the embodiment of the present disclosure is simpler, the screen power consumption is lower, and there is no requirement for the sensor position, which improves the distance detection effect and stability.

[0058] In some embodiments, the first transistor M1, the second transistor M2, and the third transistor M3 may be MOS transistors (Metal-Oxide-Semiconductor Field-Effect Transistor) or triodes, which is not limited in the present disclosure.

[0059] For example Figure 6In the example, the first transistor M1, the second transistor M2 and the third transistor M3 are all MOS tubes, and the MOS tube includes three poles, namely, the gate G, the source S and the drain D. The basic working principle of the MOS tube is: by applying a control level to the gate G, the source S and the drain D are turned on or off. MOS tubes can be divided into NMOS and PMOS, and can be divided into enhancement type and depletion type according to different control levels. In the embodiments of the present disclosure, there is no restriction on the type of MOS tube, and the scheme of the present disclosure can be implemented. Those skilled in the art can implement hardware selection and logic control according to specific needs, and the present disclosure will not go into details.

[0060] See also Figure 6 As shown, the drain D of the first transistor M1 is connected to the first power supply terminal ELVDD, the source of the first transistor M1 is connected to the anode of the light emitting device Q, and the cathode of the light emitting device Q is connected to the second power supply terminal ELVSS. The gate G of the first transistor M1 is connected to the drain D of the third transistor M3, the source S of the third transistor M3 is connected to the data line Data, and the gate G of the third transistor M3 is connected to the scan line Scan. The drain D of the second transistor M2 is connected to the source S of the first transistor M1, and the gate G and source S of the second transistor M2 are grounded GND. One electrode of the capacitor Cs is connected to the first power supply terminal ELVDD, and the other electrode is connected to the gate G of the first transistor M1.

[0061] The above describes the structure and principle of the pixel circuit in the embodiment of the present disclosure. The pixel circuit can be used as a pixel point in the display panel. For the entire display panel, its screen component can be a pixel array composed of n rows and m columns of pixel points.

[0062] In some embodiments, the present disclosure provides a display panel, which includes pixels arranged in an array on a substrate layer, and a driving circuit for each pixel is the pixel circuit in any of the aforementioned embodiments.

[0063] In some embodiments, the display panel of the example of the present disclosure is an OLED screen, so that the light-emitting device in the pixel circuit of each pixel is an OLED light-emitting device.

[0064] It can be understood that since the pixel circuit of the embodiment of the present disclosure can solve the light spot problem caused by infrared light, the display panel of the embodiment of the present disclosure can be used to implement under-screen optical distance detection without causing the light spot problem.

[0065] In some embodiments, the present disclosure provides an electronic device, the electronic device comprising:

[0066] A display panel, which is a display panel of any of the aforementioned embodiments;

[0067] The distance sensor is arranged at one side of the display panel, and the detection end of the distance sensor is arranged at a distance from the display panel.

[0068] See also Figure 7 As shown, the display panel 100 is a display panel obtained by any of the aforementioned embodiments of the present disclosure, that is, the display panel includes pixel points arranged in an array on a substrate layer, and the pixel circuit of each pixel point is as shown in the aforementioned 4.

[0069] The distance sensor can be an infrared distance sensor, which is arranged on one side of the display panel 100. For example, in an example, the electronic device takes a smart phone as an example, the display panel 100 is the front screen of the mobile phone, and the infrared distance sensor can be arranged below the display panel 100.

[0070] The detection end of the infrared distance sensor is spaced apart from the display panel 100, and the detection end includes an infrared transmitting end 210 and an infrared receiving end 220. The infrared transmitting end 210 is used to transmit an infrared light signal toward the display panel 100. The infrared light signal can pass through the display panel 100 through the pixel gap on the display panel 100, and then after being reflected by the human body or other objects, the reflected light signal passes through the display panel 100 and is received by the infrared receiving end 220. After that, the infrared distance sensor performs a series of detection algorithms such as filtering and demodulation according to the received reflected light signal to determine the distance between the human body or other objects and the sensor. For the distance detection algorithm of the infrared distance sensor 200, those skilled in the art can understand and fully implement it by referring to the relevant technology, and the present disclosure will not repeat it.

[0071] During this process, although the infrared light signal will cause the transistor in the pixel circuit to be excited and turned on, due to the existence of the grounding branch of the second transistor, the current can be grounded through the second transistor to avoid the light spot problem caused by the current passing through the light-emitting device Q. Those skilled in the art can understand this by referring to the above and will not elaborate on it here.

[0072] In one example, the electronic device takes a smart phone as an example, and the distance sensor can be arranged below the display panel and near the receiver, for example Figure 1 As shown in , when the user puts the receiver to the ear to answer the call, the distance sensor determines that the user is in the state of answering the call through the aforementioned detection process, so that the mobile phone can control the display panel to automatically turn off the screen. When the user moves the receiver away from the ear, the distance sensor determines that the user is away from the receiver through the aforementioned detection process, so that the mobile phone can control the display panel to automatically turn on the screen, realizing automatic screen off control based on distance detection.

[0073] Of course, those skilled in the art will appreciate that the electronic device of the embodiments of the present disclosure is not limited to smartphones, but may be any other type of device suitable for implementation, such as a tablet computer, a wearable device, etc., and the present disclosure does not impose any limitation on this.

[0074] From the above, it can be known that in the implementation of this specification, the current generated by the infrared light signal can be grounded through the grounding branch where the second transistor is located, avoiding the light spot problem caused by the current passing through the light-emitting device, thereby improving the user experience. In addition, compared with the solution of covering the light spot problem through timing coordination, the algorithm of the disclosed implementation is simpler, the screen power consumption is lower, and there is no requirement for the sensor position, which improves the distance detection effect and stability.

[0075] Figure 8 The structural block diagram of the electronic device in some embodiments of the present disclosure is shown. Figure 8 , the electronic device 1800 may include one or more of the following components: a processing component 1802 , a memory 1804 , a power component 1806 , a multimedia component 1808 , an audio component 1810 , an input / output (I / O) interface 1812 , a sensor component 1816 , and a communication component 1818 .

[0076] The processing component 1802 generally controls the overall operation of the electronic device 1800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 1802 may include one or more processors 1820 to execute instructions. In addition, the processing component 1802 may include one or more modules to facilitate interaction between the processing component 1802 and other components. For example, the processing component 1802 may include a multimedia module to facilitate interaction between the multimedia component 1808 and the processing component 1802. For another example, the processing component 1802 may read executable instructions from a memory to implement electronic device related functions.

[0077] The memory 1804 is configured to store various types of data to support operations on the electronic device 1800. Examples of such data include instructions for any application or method operating on the electronic device 1800, contact data, phone book data, messages, pictures, videos, etc. The memory 1804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0078] The power supply component 1806 provides power to the various components of the electronic device 1800. The power supply component 1806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the electronic device 1800.

[0079] The multimedia component 1808 includes a display screen that provides an output interface between the electronic device 1800 and the user. In some embodiments, the multimedia component 1808 includes a front camera and / or a rear camera. When the electronic device 1800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0080] The audio component 1810 is configured to output and / or input audio signals. For example, the audio component 1810 includes a microphone (MIC), and when the electronic device 1800 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 1804 or sent via the communication component 1818. In some embodiments, the audio component 1810 also includes a speaker for outputting audio signals.

[0081] I / O interface 1812 provides an interface between processing component 1802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

[0082] The sensor assembly 1816 includes one or more sensors for providing various aspects of status assessment for the electronic device 1800. For example, the sensor assembly 1816 can detect the open / closed state of the electronic device 1800, the relative positioning of components, such as the display and keypad of the electronic device 1800, and the sensor assembly 1816 can also detect the position change of the electronic device 1800 or a component of the electronic device 1800, the presence or absence of user contact with the electronic device 1800, the orientation or acceleration / deceleration of the electronic device 1800, and the temperature change of the electronic device 1800. The sensor assembly 1816 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 1816 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1816 may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0083] The communication component 1818 is configured to facilitate wired or wireless communication between the electronic device 1800 and other devices. The electronic device 1800 can access a wireless network based on a communication standard, such as Wi-Fi, 2G, 3G, 4G, 5G or 6G, or a combination thereof. In an exemplary embodiment, the communication component 1818 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1818 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0084] In an exemplary embodiment, the electronic device 1800 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0085] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the embodiments. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A pixel circuit, characterized in that: include: a first transistor, wherein a control end of the first transistor is connected to a scan line and a data line, a first path end of the first transistor is connected to a first power supply end, a second path end of the first transistor is connected to an anode of a light emitting device, and a cathode of the light emitting device is connected to a second power supply end; A second transistor, wherein a first channel terminal of the second transistor is connected to a second channel terminal of the first transistor, and a control terminal and a second channel terminal of the second transistor are grounded.

2. The pixel circuit according to claim 1, characterized in that: It also includes a third transistor, wherein the control end of the third transistor is connected to the scan line, the first channel end of the third transistor is connected to the data line, and the second channel end of the third transistor is connected to the control end of the first transistor.

3. The pixel circuit according to claim 1, characterized in that: It also includes a first capacitor, one electrode of the first capacitor is connected to the control end of the first transistor, and the other electrode is connected to the first power supply end.

4. The pixel circuit according to claim 2, characterized in that: The first transistor, the second transistor and the third transistor are MOS transistors, wherein the first path end is one of the source or the drain of the MOS transistor, the second path end is the other of the source or the drain of the MOS transistor, and the control end is the gate of the MOS transistor.

5. The pixel circuit according to claim 1, characterized in that: The light emitting device is an OLED light emitting device.

6. A display panel, characterized in that: It comprises pixel points arranged in an array on a substrate layer, and each pixel point comprises a pixel circuit according to any one of claims 1 to 5.

7. An electronic device, characterized in that: Comprising the display panel according to claim 6.

8. The electronic device according to claim 7, characterized in that: It also includes a distance sensor, which is arranged at one side of the display panel, and a detection end of the distance sensor is spaced apart from the display panel.

9. The electronic device according to claim 8, characterized in that: The distance sensor is an infrared distance sensor, and the detection end includes an infrared transmitting end and an infrared receiving end. The infrared transmitting end is used to transmit an infrared light signal toward the display panel, and the infrared receiving end is used to receive the infrared light signal.

10. The electronic device according to claim 7, characterized in that: The electronic device includes a smart phone or a tablet computer.

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