WO2019100955A1 - Display apparatus and electronic device - Google Patents

Abstract

Embodiments of the present application provide a display apparatus and an electronic device. The display apparatus comprises a display screen, an ultrasonic sensor, and a circuit. The ultrasonic sensor comprises a signal transmitter and a signal receiver, a detection signal of the signal transmitter is transmitted from the display screen to the outside of the display screen, and the signal receiver receives a reflected signal reflected by a barrier outside the display screen. The circuit is used for determining the distance state between the barrier and the display screen according to the reflected signal and adjusting the display state of the display screen according to the distance state.

Description

Display device and electronic device

The present application claims priority to Chinese Patent Application No. PCT Application No. No. No. No. No. No. No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No

Technical field

The present application relates to the field of electronic device technologies, and in particular, to a display device and an electronic device.

Background technique

With the development of communication technologies, electronic devices such as smart phones are becoming more and more popular. In the use of the electronic device, such as a call, in order to avoid the user's misoperation of the electronic device, when the user's face approaches the electronic device to reach a certain distance, the electronic device automatically turns off the screen.

In the related art, the electronic device detects the approach and the distance of the user's face through the proximity sensor, and controls the electronic device to turn off the screen or brighten the screen according to the detected data.

technical problem

The embodiment of the present invention provides a display device and an electronic device, which can improve the accuracy of the electronic device controlling the display screen to be off or bright.

Technical solution

In a first aspect, an embodiment of the present application provides a display device including a display screen, an ultrasonic sensor, and a circuit, the ultrasonic sensor including a signal transmitter and a signal receiver, and the detection signal of the signal transmitter passes through the display Transmitting to the outside of the display screen, the signal receiver receives a reflected signal reflected from the obstacle outside the display screen, and the circuit is configured to determine the obstacle and the display screen according to the reflected signal a distance state between the two, and adjusting the display state of the display screen according to the distance state.

In a second aspect, an embodiment of the present application further provides an electronic device including a housing and a display device, wherein the display device is mounted on the housing, and the display device is the display device.

Beneficial effect

The embodiment of the present invention provides a display device and an electronic device, which can improve the accuracy of the electronic device controlling the display screen to be off or bright.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application. Other drawings can also be obtained from those skilled in the art based on these drawings without paying any creative effort.

FIG. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

FIG. 2 is another schematic structural diagram of an electronic device according to an embodiment of the present application.

FIG. 3 is a schematic structural diagram of a housing in an electronic device according to an embodiment of the present disclosure.

FIG. 4 is another schematic structural diagram of a housing in an electronic device according to an embodiment of the present disclosure.

FIG. 5 is a schematic diagram of a first structure of a display device in an electronic device according to an embodiment of the present disclosure.

FIG. 6 is a schematic diagram of a second structure of a display device in an electronic device according to an embodiment of the present disclosure.

FIG. 7 is a schematic diagram of a third structure of a display device in an electronic device according to an embodiment of the present disclosure.

FIG. 8 is a schematic diagram of a fourth structure of a display device in an electronic device according to an embodiment of the present disclosure.

FIG. 9 is a schematic diagram of a fifth structure of a display device in an electronic device according to an embodiment of the present disclosure.

FIG. 10 is a schematic diagram of a sixth structure of a display device in an electronic device according to an embodiment of the present disclosure.

FIG. 11 is a schematic diagram of a seventh structure of a display device in an electronic device according to an embodiment of the present disclosure.

FIG. 12 is a schematic diagram of an eighth structure of a display device in an electronic device according to an embodiment of the present disclosure.

FIG. 13 is a schematic diagram of a ninth structure of a display device in an electronic device according to an embodiment of the present disclosure.

FIG. 14 is a schematic diagram of a tenth structure of a display device in an electronic device according to an embodiment of the present disclosure.

Embodiments of the invention

The technical solutions in the embodiments of the present application will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments. It is apparent that the described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by a person skilled in the art based on the embodiments of the present application without creative efforts are within the scope of the present application.

In the description of the present application, it is to be understood that the orientation or positional relationship of the terms "upper", "lower" and the like is based on the orientation or positional relationship shown in the drawings, for convenience of description of the present application and simplified description. Instead of indicating or implying that the device or component referred to must have a particular orientation, constructed and operated in a particular orientation, it is not to be construed as limiting the invention.

Embodiments of the present application provide a display device and an electronic device. The display device can be disposed in an electronic device, and the electronic device can be a device such as a smart phone or a tablet computer. 1 and FIG. 2, FIG. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure, and FIG. 2 is another schematic structural diagram of an electronic device according to an embodiment of the present application. The electronic device 100 includes a cover 10, a display device 20, a circuit board 30, and a housing 40.

The cover 10 is mounted to the display device 20 to cover the display device 20. The cover 10 can be a clear glass cover. In some embodiments, the cover 10 can be a cover glass made of a material such as sapphire. In the description of the present application, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise specifically defined and defined. Connected, or integrally connected; may be mechanically connected, may be electrically connected or may communicate with each other; may be directly connected, or may be indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship. For those skilled in the art, the specific meanings of the above terms in the present application can be understood on a case-by-case basis.

In the present application, the first feature "on" or "under" the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.

Among them, the display device 20 is mounted on the housing 40 to form a display surface of the electronic device 100. The display device 20, as the front case of the electronic device 100, forms a closed space with the housing 40 for accommodating other electronic components of the electronic device 100. At the same time, the display device 20 forms a display surface of the electronic device 100 for displaying information such as images, texts, and the like. As shown in FIG. 1, the display device 20 can be a full screen to enable full screen display.

As shown in FIG. 2, the display device 20 may include a non-display area 201 and a display area 202. The top area of the non-display area 201 can be provided with an opening for sound and light transmission. The bottom area of the non-display area 201 can be provided with functional components such as a fingerprint module and a touch button. The display area 202 can be used to display a screen of the electronic device 100 or for a user to perform touch manipulation or the like. In some embodiments, the functional component disposed under the corresponding position of the top area of the non-display area 201 may adopt a functional component that does not require an opening arrangement to enhance the aesthetic appearance of the electronic device, such as a light sensor to be used for implementing the proximity function. Instead of an ultrasonic sensor, there is no need to set an opening. The cover 10 is mounted on the display device 20 to cover the display device 20 to form the same display area and non-display area as the display device 20. For details, refer to the display area and the non-display area of the display device 20. It should be noted that the configuration of the display device 20 is not limited thereto. For example, the display device 20 can also be a profiled screen.

The circuit board 30 is mounted inside the casing 40 to house the circuit board 30 in the enclosed space. Circuit board 30 can be the motherboard of electronic device 100. A grounding point is provided on the circuit board 30 to achieve grounding of the circuit board 30. Functional components such as a camera and a processor can be integrated on the circuit board 30. At the same time, the display device 20 can be electrically connected to the circuit board 30.

In some embodiments, display control circuitry is provided on circuit board 30. The display control circuit outputs an electrical signal to the display device 20 to control the display device 20 to display information.

The housing 40 is used to form an outer contour of the electronic device 100. The housing 40 can be a metal housing such as an aluminum alloy housing 40. It should be noted that the material of the housing 40 of the embodiment of the present application is not limited thereto, and other methods may be used. For example, the housing 40 may be a ceramic middle frame or a glass middle frame. For another example, the housing 40 can be a plastic middle frame. For example, the housing 40 may be a metal and plastic mating structure, and the plastic part may be injection molded onto the metal sheet.

In some embodiments, as shown in FIG. 3, FIG. 3 is a schematic structural diagram of a housing in an electronic device according to an embodiment of the present application. The housing 40 can be integrally formed. It should be noted that the structure of the housing 40 of the embodiment of the present application is not limited thereto. For example, please refer to FIG. 4. FIG. 4 is another schematic structural diagram of a housing in an electronic device according to an embodiment of the present disclosure. The housing 40 may include a middle frame 41 and a rear cover 42, and the middle frame 41 and the rear cover 42 are fixedly coupled to form a housing 40.

In some embodiments, please refer to FIG. 5 and FIG. 6. FIG. 5 is a first schematic structural diagram of a display device in an electronic device according to an embodiment of the present disclosure, and FIG. 6 is a display device in an electronic device according to an embodiment of the present disclosure. Two structural diagrams. The display device 20 can include a display screen 21, an ultrasonic sensor 22, and a circuit 23. In the description of the present application, it is to be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include one or more of the described features either explicitly or implicitly.

The display screen 21 and the ultrasonic sensor 22 are electrically connected to the circuit 23, respectively. The circuit 23 can be a control circuit or a processing chip.

The ultrasonic sensor 22 includes a signal transmitter 221 and a signal receiver 222. The detection signal A of the signal transmitter 221 is transmitted through the display screen 21 to the outside of the display screen 21. The signal receiver 222 receives the display screen. a reflection signal B reflected by the obstacle 200, the circuit 23 is configured to determine a distance state between the obstacle 200 and the display screen 21 according to the reflection signal B, and adjust the display screen 21 according to the distance state. Display state.

In some embodiments, the distance state includes a proximity state, and the circuit 23 adjusts the display state of the display screen 21 to a blackout state according to the proximity state.

In some embodiments, the distance state includes a remote state, and the circuit 23 adjusts the display state of the display screen 21 to a bright screen state according to the remote state.

Specifically, the signal transmitter 221 is configured to transmit the detection signal A to the outside. The detection signal A is transmitted to the outside through the display screen 21. The detection signal A generates a reflected signal B after it comes into contact with an external object 200 (for example, a user's face) as an obstacle. The reflected signal B passes through the display screen 21 into the signal receiver 222.

After receiving the reflected signal B, the signal receiver 222 can output the received signal to the circuit 23 of the display device 20 for processing, thereby controlling the display screen of the display device 20 to be turned off or bright.

In some embodiments, as shown in FIG. 5, the signal transmitter 221 and the signal receiver 222 of the ultrasonic sensor 22 are both disposed under the display screen 21. The signal transmitter 221 and the signal receiver 222 may be disposed at any position below the display screen 21. For example, the signal transmitter 221 may be disposed at a position near the two sides of the display screen 21, and the signal receiver 222 is disposed at the position The middle position below the display screen 21. The detection signal A of the signal transmitter 221 is transmitted through the display screen 21 to the outside of the display screen 21. The signal receiver 222 receives the reflected signal B reflected from the obstacle 200 outside the display screen 21.

In some embodiments, as shown in FIG. 6, the signal transmitter 221 and the signal receiver 222 of the ultrasonic sensor 22 are both disposed in the display screen 21. The signal transmitter 221 and the signal receiver 222 may be disposed at any position within the display screen 21. For example, the signal transmitter 221 may be disposed at a position near the two sides of the display screen 21, and the signal receiver 222 is disposed on the display screen. The middle position within 21. The circuit 23 can be disposed in the display screen 21. The display screen 21 and the ultrasonic sensor 22 are connected to the circuit 23 by wires. For example, the circuit 23 can be disposed under the display screen 21, and the display screen 21 and the ultrasonic sensor 22 are connected to the circuit 23 by wires.

In some embodiments, the display 21 can be an OLED display. The display screen 21 may include a substrate 211 and an anode 212, a hole transport layer 213, an organic light emitting layer 314, an electron transport layer 215, and a metal cathode 216 which are sequentially disposed on the substrate 211.

In some embodiments, as shown in FIG. 7, FIG. 7 is a schematic diagram of a third structure of a display device in an electronic device according to an embodiment of the present application.

The display screen 21 includes a substrate 211 and an anode 212, a hole transport layer 213, an organic light-emitting layer 314, an electron transport layer 215, and a metal cathode 216 which are sequentially disposed on the substrate 211.

The signal transmitter 221 and the signal receiver 222 of the ultrasonic sensor 22 are disposed between the substrate 211 and the anode 212. The detection signal A of the signal transmitter 221 sequentially passes through the anode 212 and the hole transport layer 213. The organic light emitting layer 314, the electron transport layer 215 and the metal cathode 216 are emitted outside the display screen 21. The signal receiver 222 receives a reflected signal B reflected from the obstacle 200 outside the display screen 21, wherein the reflection Signal B sequentially passes through the metal cathode 216, the electron transport layer 215, the organic light-emitting layer 314, the hole transport layer 213, and the anode 212 into the signal receiver 222.

In some embodiments, as shown in FIG. 8, FIG. 8 is a schematic diagram of a fourth structure of a display device in an electronic device according to an embodiment of the present application. 8 is different from FIG. 7 in that a surface of the substrate 211 adjacent to the anode 212 is provided with a groove, and the signal emitter 221 and the signal receiver 222 are embedded in the groove of the substrate 211, so that the substrate 211 and The anode 212 is attached to reduce the thickness of the display.

In some embodiments, as shown in FIG. 9, FIG. 9 is a schematic diagram of a fifth structure of a display device in an electronic device according to an embodiment of the present disclosure.

The signal transmitter 221 and the signal receiver 222 of the ultrasonic sensor 22 are disposed between the anode 212 and the hole transport layer 213, and the detection signal A of the signal emitter 221 sequentially passes through the hole transport layer 213. An organic light emitting layer 314, the electron transport layer 215 and the metal cathode 216 are emitted outside the display screen 21. The signal receiver 222 receives a reflected signal B reflected from the obstacle 200 outside the display screen 21, wherein the reflected signal B sequentially passes through the metal cathode 216, the electron transport layer 215, the organic light-emitting layer 314, and the hole transport layer 213 into the signal receiver 222.

In some embodiments, as shown in FIG. 10, FIG. 10 is a sixth structural diagram of a display device in an electronic device according to an embodiment of the present application.

The signal transmitter 221 is disposed between the substrate 211 and the anode 212, and the signal receiver 222 is disposed between the anode 212 and the hole transport layer 213. The detection signal A of the signal emitter 221 sequentially passes through the anode 211. The hole transport layer 213, the organic light-emitting layer 314, the electron transport layer 215, and the metal cathode 216 are emitted outside the display screen 21, and the signal receiver 222 receives the reflection reflected from the obstacle 200 outside the display screen 21. The signal B, wherein the reflected signal B passes through the metal cathode 216, the electron transport layer 215, the organic light-emitting layer 314, and the hole transport layer 213, enters the signal receiver 222 in sequence.

In some embodiments, as shown in FIG. 11, FIG. 11 is a schematic diagram of a seventh structure of a display device in an electronic device according to an embodiment of the present application.

The display screen 21 includes a non-display area 201 and a display area 202. The non-display area 201 is disposed on opposite sides of the display screen 21. The signal transmitter 221 and the signal receiver 222 of the ultrasonic sensor 22 are disposed on the non-display. Within area 201. The detection signal A of the signal transmitter 221 is transmitted outside the display screen 21 through the non-display area 201 of the display screen 21, and the signal receiver 222 receives the reflected signal B reflected from the obstacle 200 outside the display screen 21.

In some embodiments, as shown in FIG. 12, FIG. 12 is a schematic diagram of an eighth structure of a display device in an electronic device according to an embodiment of the present application.

The signal transmitter 221 and the signal receiver 222 of the ultrasonic sensor 22 are disposed between the electron transport layer 215 and the metal cathode 216 corresponding to the non-display area 201. The detection signal A of the signal emitter 221 passes through the metal cathode 216. Transmitting out of the display screen 21, the signal receiver 222 receives a reflected signal B reflected from the obstacle 200 outside the display screen 21, wherein the reflected signal B passes through the metal cathode 216 into the signal receiver 222.

In some embodiments, as shown in FIG. 13 , FIG. 13 is a schematic diagram of a ninth structure of a display device in an electronic device according to an embodiment of the present disclosure.

The signal transmitter 221 and the signal receiver 222 of the ultrasonic sensor 22 are disposed between the electron transport layer 215 and the organic light-emitting layer 214 corresponding to the non-display area 201, and the detection signal A of the signal transmitter 221 sequentially transmits the electrons. The transmission layer 215 and the metal cathode 216 are emitted outside the display screen 21. The signal receiver 222 receives the reflected signal B reflected from the obstacle 200 outside the display screen 21, wherein the reflected signal B sequentially passes through the metal cathode. 216 and the electron transport layer 215 enter the signal receiver 222.

In some embodiments, as shown in FIG. 14, FIG. 14 is a schematic diagram of a tenth structure of a display device in an electronic device according to an embodiment of the present disclosure.

The signal transmitter 221 and the signal receiver 222 of the ultrasonic sensor 22 are disposed between the hole transport layer 213 and the organic light-emitting layer 214 corresponding to the non-display area 201, and the detection signal A of the signal transmitter 221 sequentially transmits the signal The organic light-emitting layer 214, the electron transport layer 215 and the metal cathode 216 are emitted outside the display screen 21. The signal receiver 222 receives a reflected signal B reflected from the obstacle 200 outside the display screen 21, wherein the reflected signal B sequentially passes through the metal cathode 216, the electron transport layer 215, and the organic light-emitting layer 314 into the signal receiver 222.

The above is an embodiment of the present application, by detecting an ultrasonic sensor integrated in the display device to detect whether an object approaches the display screen and then controls the display screen to be off or bright, thereby improving the detection accuracy of the sensor, thereby improving the control screen of the electronic device. The accuracy of the screen or the bright screen can also avoid the opening of the proximity sensor from the structure, effectively improve the display area of the display screen, thereby realizing the display effect of the large screen image, reducing the complexity of the structural design and improving the appearance of the electronic device. Aesthetics.

The display device and the electronic device provided by the embodiments of the present application are described in detail. The principles and implementations of the present application are described in the specific examples. The description of the above embodiments is only for helping to understand the present application. In the meantime, those skilled in the art will be able to change the specific embodiments and the scope of the application according to the idea of the present application. In the above, the content of the specification should not be construed as limiting the present application.

Claims (20)

A display device comprising a display screen, an ultrasonic sensor and a circuit, the ultrasonic sensor comprising a signal transmitter and a signal receiver, the detection signal of the signal transmitter being transmitted to the display screen through the display screen, The signal receiver receives a reflected signal reflected from the obstacle outside the display screen, and the circuit is configured to determine a distance state between the obstacle and the display screen according to the reflected signal, and according to the The distance state adjusts the display state of the display screen. The display device according to claim 1, wherein the ultrasonic sensor is disposed in the display screen. The display device according to claim 2, wherein the display screen comprises a substrate and an anode, a hole transport layer, an organic light-emitting layer, an electron transport layer, and a metal cathode which are sequentially disposed on the substrate. The display device according to claim 3, wherein the signal transmitter and the signal receiver are disposed between the substrate and the anode, and the signal of the signal transmitter sequentially passes through the anode, The hole transport layer, the organic light-emitting layer, the electron transport layer, and the metal cathode are emitted outside the display screen, and the signal receiver receives a reflection reflected from the obstacle outside the display screen signal. The display device according to claim 4, wherein a surface of the substrate adjacent to the anode is provided with a groove, and the signal emitter and the signal receiver are embedded in a groove of the substrate. The display device according to claim 3, wherein the signal transmitter and the signal receiver are disposed between the anode and the hole transport layer, and the signal of the signal transmitter is sequentially transmitted through The hole transport layer, the organic light-emitting layer, the electron transport layer, and the metal cathode are emitted outside the display screen, and the signal receiver receives a reflected signal reflected from the obstacle outside the display screen . The display device according to claim 3, wherein the signal emitter is disposed between the substrate and the anode, and the signal receiver is disposed between the anode and the hole transport layer. a detection signal of the signal transmitter is sequentially transmitted through the anode, the hole transport layer, the organic light-emitting layer, the electron transport layer, and the metal cathode to the outside of the display screen, the signal receiver A reflection signal that is reflected from the metal cathode, the electron transport layer, the organic light-emitting layer, and the hole transport layer by an obstacle is sequentially received from outside the display screen. The display device according to claim 3, wherein a non-display area is provided on opposite sides of the display screen, and the ultrasonic sensor is disposed in the non-display area. The display device according to claim 8, wherein the signal transmitter and the signal receiver are disposed between the electron transport layer and the metal cathode corresponding to the non-display area, and the signal transmission signal of the signal transmitter is transparent. The signal receiver receives a reflected signal reflected from the obstacle outside the display screen, outside the display screen. The display device according to claim 8, wherein the signal transmitter and the signal receiver are both disposed between an electron transport layer and an organic light-emitting layer corresponding to the non-display area, and the signal transmitter detects A signal is transmitted through the electron transport layer and the metal cathode to the outside of the display screen, and the signal receiver receives a reflected signal reflected from the obstacle outside the display screen. The display device according to claim 8, wherein the signal transmitter and the signal receiver are both disposed between a hole transport layer and an organic light-emitting layer corresponding to the non-display area, the signal transmitter A detection signal is sequentially transmitted through the organic light-emitting layer, the electron transport layer, and the metal cathode to the outside of the display screen, and the signal receiver receives a reflected signal reflected from the obstacle outside the display screen. The display device according to claim 3, wherein said signal receiver is disposed at an intermediate position of said display screen. The display device according to claim 3, wherein said signal emitters are disposed at both side positions of said display screen. The display device according to claim 1, wherein a signal transmitter and a signal receiver of the ultrasonic sensor are disposed under the display screen, and a signal of the signal transmitter is transmitted through the display screen to Outside the display screen, the signal receiver receives a reflected signal reflected from an obstacle outside the display screen. The display device according to claim 1, wherein the distance state includes a proximity state, and the circuit adjusts a display state of the display screen to a blackout state according to the proximity state. The display device according to claim 1, wherein the distance state includes a distant state, and the circuit adjusts a display state of the display screen to a bright screen state according to the remote state. An electronic device comprising a housing mounted on the housing, the display device comprising a display screen, an ultrasonic sensor and a circuit, the ultrasonic sensor comprising a signal transmitter and a signal receiver a detection signal of the signal transmitter is transmitted to the display screen through the display screen, and the signal receiver receives a reflected signal reflected from the obstacle outside the display screen, and the circuit is configured to The reflected signal determines a distance state between the obstacle and the display screen, and adjusts a display state of the display screen according to the distance state. The electronic device according to claim 17, wherein the ultrasonic sensor is disposed in the display screen, the display screen includes a substrate, and an anode, a hole transport layer, an organic light emitting layer, which are sequentially disposed on the substrate, Electron transport layer and metal cathode; The signal transmitter and the signal receiver are disposed between the substrate and the anode, and the detection signal of the signal transmitter sequentially transmits the anode, the hole transport layer, and the organic light emitting layer The electron transport layer and the metal cathode are emitted outside the display screen, and the signal receiver receives a reflected signal reflected from the obstacle outside the display screen; or The signal transmitter and the signal receiver are disposed between the anode and the hole transport layer, and the signal of the signal transmitter sequentially transmits through the hole transport layer, the organic light-emitting layer, The electron transport layer and the metal cathode are emitted outside the display screen, and the signal receiver receives a reflected signal reflected from the obstacle outside the display screen; or The signal transmitter is disposed between the substrate and the anode, the signal receiver is disposed between the anode and the hole transport layer, and the signal of the signal transmitter sequentially transmits the signal An anode, the hole transport layer, the organic light-emitting layer, the electron transport layer, and the metal cathode are emitted outside the display screen, and the signal receiver receives the through-the-screen through the display screen A reflection signal of the metal cathode, the electron transport layer, the organic light-emitting layer, and the hole transport layer reflected by the obstacle. The electronic device according to claim 17, wherein the opposite sides of the display screen are provided with a non-display area, the ultrasonic sensor is disposed in the display screen, and the ultrasonic sensor is disposed on the non-display In the area, the display screen includes a substrate and an anode, a hole transport layer, an organic light emitting layer, an electron transport layer and a metal cathode which are sequentially disposed on the substrate; The signal transmitter and the signal receiver are disposed between the electron transport layer and the metal cathode corresponding to the non-display area, and the signal of the signal transmitter is transmitted to the display screen through the metal cathode The signal receiver receives a reflected signal reflected from the obstacle outside the display screen; or The signal transmitter and the signal receiver are both disposed between the electron transport layer and the organic light emitting layer corresponding to the non-display area, and the signal of the signal transmitter sequentially transmits through the electron transport layer and the a metal cathode is emitted outside the display screen, the signal receiver receiving a reflected signal reflected from the obstacle outside the display screen; or The signal transmitter and the signal receiver are both disposed between the hole transport layer and the organic light emitting layer corresponding to the non-display area, and the detection signal of the signal transmitter sequentially transmits the organic light emitting layer and the The electron transport layer and the metal cathode are emitted outside the display screen, and the signal receiver receives a reflected signal reflected from the obstacle outside the display screen. The electronic device according to claim 17, wherein the signal transmitter and the signal receiver of the ultrasonic sensor are both disposed under the display screen, and the signal of the signal transmitter is transmitted through the display screen to Outside the display screen, the signal receiver receives a reflected signal reflected from an obstacle outside the display screen.