CN112670322B

CN112670322B - Display device and electronic apparatus

Info

Publication number: CN112670322B
Application number: CN202011519203.3A
Authority: CN
Inventors: 李偲
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2022-10-21
Anticipated expiration: 2040-12-21
Also published as: CN112670322A

Abstract

The embodiment of the application provides a display device and electronic equipment, the display device is applied to the electronic equipment capable of transmitting infinite signals, the display device comprises a pixel definition layer and an electromagnetic band gap structure, the pixel definition layer comprises a plurality of display pixels, the electromagnetic band gap structure is positioned on one side of the pixel definition layer, the electromagnetic band gap structure comprises a metal layer, and each display pixel is electrically connected with the metal layer, so that the metal layer forms a cathode layer of the display device. Based on this, according to the display device of the embodiment of the application, the electromagnetic band gap structure can reduce the transmission of wireless signals on the display device, and the electromagnetic band gap structure can reduce the influence of the display device on the radiation performance of the antenna device and improve the radiation performance of the antenna device. Meanwhile, the cathode layer of the electromagnetic band gap structure multiplexing display device is used as a metal layer of the electromagnetic band gap structure multiplexing display device, so that the space occupied by the electromagnetic band gap structure can be saved, and the miniaturization of the display device is realized.

Description

Display device and electronic apparatus

Technical Field

The present disclosure relates to electronic technologies, and particularly to a display device and an electronic apparatus.

Background

With the development of communication technology, electronic devices such as smart phones are becoming more and more popular. During the use process of the electronic equipment, the electronic equipment can display a picture by using the display device of the electronic equipment and transmit a wireless signal by using the antenna device of the electronic equipment.

However, with the development of electronic technology, electronic devices are becoming smaller and thinner, and the distance between the display device and the antenna device of the electronic device is becoming shorter, and the display device affects the performance of the antenna device.

Disclosure of Invention

The embodiment of the application provides a display device and an electronic device, wherein the display device can reduce the influence on the radiation performance of an antenna device of the electronic device.

In a first aspect, an embodiment of the present application provides a display device, which is applied to an electronic device capable of transmitting a wireless signal; the display device includes:

a pixel definition layer comprising a plurality of display pixels; and

an electromagnetic bandgap structure on one side of the pixel defining layer, the electromagnetic bandgap structure comprising a metal layer, each of the display pixels being electrically connected to the metal layer such that the metal layer forms a cathode layer of the display device; wherein,

the electromagnetic bandgap structure is used for reducing the transmission of the wireless signal on the display device.

In a second aspect, an embodiment of the present application provides an electronic device, including:

the display device as described above; and

an antenna device including a radiator for transmitting a wireless signal;

wherein the electromagnetic bandgap structure of the display device is configured to reduce transmission of the wireless signal on the display device.

The display device comprises a pixel definition layer and an electromagnetic band gap structure, wherein the pixel definition layer comprises a plurality of display pixels, the electromagnetic band gap structure is located on one side of the pixel definition layer, the electromagnetic band gap structure comprises a metal layer, and each display pixel is electrically connected with the metal layer so that the metal layer forms a cathode layer of the display device. Based on this, according to the display device of the embodiment of the application, the electromagnetic band gap structure can reduce the transmission of wireless signals on the display device, and the electromagnetic band gap structure can reduce the influence of the display device on the radiation performance of the antenna device and improve the radiation performance of the antenna device. Meanwhile, the metal layer is electrically connected to the display pixels of the pixel defining layer, the metal layer may form a cathode layer of the display device, the metal layer may provide a negative current signal to the display pixels so that the display pixels may emit light and display information, and the metal layer also belongs to a part of the electromagnetic bandgap structure. Therefore, the electromagnetic band gap structure of the embodiment of the application can reuse the cathode layer of the display device as the metal layer of the display device, so that raw materials can be saved, the space occupied by the electromagnetic band gap structure can be saved, and the miniaturization of the display device is realized.

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.

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

Fig. 2 is a first structural diagram of the display device shown in fig. 1.

Fig. 3 is a graph of system efficiency of the antenna apparatus shown in fig. 1 in different states.

Fig. 4 is a second structural schematic diagram of an electronic device according to an embodiment of the present application.

Fig. 5 is a schematic cross-sectional view of the display device shown in fig. 4 along a direction P1 to P2.

Fig. 6 is a second structural diagram of the display device shown in fig. 1.

Fig. 7 is a schematic cross-sectional view of the display device shown in fig. 6 along the direction M1 to M2.

Fig. 8 is a third schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 9 is a fourth schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to fig. 1 to 9 in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1 and fig. 2, fig. 1 is a first structural schematic diagram of an electronic device according to an embodiment of the present disclosure, and fig. 2 is a first structural schematic diagram of the display device shown in fig. 1. The electronic device 10 may transmit wireless signals, the electronic device 10 may include at least the display device 100 and the antenna device 200, the antenna device 200 may be disposed on a side of the display device 100, and the antenna device 200 may be disposed on a bezel of the electronic device 10, for example.

The antenna device 200 may implement a wireless communication function of the electronic device 10. For example, the antenna device 200 may transmit Wireless Fidelity (Wi-Fi) signals, global Positioning System (GPS) signals, 3th-Generation (3G) mobile communication technology, 4th-Generation (4G) mobile communication technology, 5th-Generation (5G) mobile communication technology, near Field Communication (NFC) signals, bluetooth signals, and the like.

The display device 100 may be an Organic Light-Emitting Diode (OLED) display device. The display device 100 may be used to display information such as images, text, and the like. The display device 100 may include at least a pixel defining layer 110, an Electromagnetic Band Gap (EBG) structure 120, and an anode layer 130.

The pixel definition layer 110 may include a plurality of display pixels 111 arranged at intervals. The pixel defining layer 110 may have a plurality of pixel holes therein, and each pixel hole may have a display pixel 111 disposed therein. The display pixels 111 include an organic light emitting material, and the display pixels 111 may be a red display pixel, a green display pixel, and a blue display pixel, so that the display apparatus 100 may display a color image.

The electromagnetic bandgap structure 120 may be located at a side of the pixel defining layer 110, for example at a side of the pixel defining layer 110 remote from the anode layer 130. The electromagnetic bandgap structure 120 may include a metal layer 121, the metal layer 121 may be multiplexed as a cathode layer of the display device 100, the metal layer 121 and the anode layer 130 may be respectively located at both sides of the pixel defining layer 110, and the pixel defining layer 110 is located between the metal layer 121 and the anode layer 130. Each display pixel 111 can be electrically connected to the anode layer 130 and the metal layer 121, respectively, and when an anode current is input to the anode layer 130 and a cathode current is input to the metal layer 121, the display pixel 111 can emit light under the action of the current, thereby achieving the display function.

The electromagnetic bandgap structure 120 may be used to reduce the transmission of wireless signals on the display device 100. It is understood that the electromagnetic bandgap structure 120 is a periodic electromagnetic structure formed by mixing a metal and a medium, and the electromagnetic bandgap structure 120 has frequency bandgap and phase bandgap characteristics. The electromagnetic bandgap structure 120 may affect transmission of electromagnetic waves in a certain frequency band, so that system efficiency of the antenna device 200 may be improved.

For example, referring to fig. 3, fig. 3 is a graph illustrating system efficiency of the antenna apparatus shown in fig. 1 under different conditions. Wherein, the curve S1 represents a system efficiency curve diagram of the electronic device 10 without the antenna device 200 of the display device 100; curve S2 represents a system efficiency curve diagram of the electronic device 10 provided with the antenna arrangement 200 of the display device not comprising the electromagnetic bandgap structure 120; curve S3 represents a system efficiency curve diagram of the electronic device 10 provided with the antenna arrangement 200 of the display device 100 comprising the electromagnetic bandgap structure 120 as shown in fig. 1. As can be seen from the curve S1, when the electronic device 10 does not include the display apparatus 100, the system efficiency of the antenna apparatus 200 is optimal, and the system peak efficiency may be-0.8 dB. As can be seen from the curve S2, when the electronic device 10 is provided with a display device 100 that does not include the electromagnetic bandgap structure 120, the system efficiency of the antenna device 200 is significantly reduced, the system peak efficiency is reduced to-4.1 dB, affecting 3.3dB, and approximately half of the energy is lost by the display device 100. As can be seen from the curve S3, when the electronic device 10 is provided with the display apparatus 100 including the electromagnetic bandgap structure 120 shown in fig. 1, the peak efficiency of the system is-3.1 dB, the system efficiency of the antenna apparatus 200 is improved by 1dB compared to the curve S2, and the electromagnetic bandgap structure 120 can improve the system efficiency of the antenna apparatus 200.

In the display device 100 of the embodiment of the application, the electromagnetic bandgap structure 120 may reduce transmission of a wireless signal on the display device 100, and the electromagnetic bandgap structure 120 may reduce an influence of the display device 100 on a radiation performance of the antenna device 200, thereby improving the radiation performance of the antenna device 200. Meanwhile, the metal layer 121 may be multiplexed as a cathode layer of the display device 100, the metal layer 121 is electrically connected to the display pixels 111 of the pixel defining layer 110, the metal layer 121 may provide current signals to the display pixels 111 so that the display pixels 111 may emit light and display information, and the metal layer 121 also belongs to a part of the electromagnetic bandgap structure 120. Therefore, the electromagnetic bandgap structure 120 of the embodiment of the present application can reuse the metal layer 121 of the display device 100 as its metal part, which can save raw materials and space occupied by the electromagnetic bandgap structure 120, thereby realizing miniaturization of the display device 100.

With reference to fig. 1 and with continuing reference to fig. 2, the electromagnetic bandgap structure 120 may further include a dielectric substrate 122 and a plurality of conductor patches 123 in addition to the metal layer 121.

The dielectric substrate 122 may include a first face 1221 and a second face 1222 disposed opposite to each other, the metal layer 121 may be disposed on the first face 1221 of the dielectric substrate 122, and the plurality of conductor patches 123 may be periodically and intermittently disposed on the second face 1222 of the dielectric substrate 122. The projection of the metal layer 121 on the second surface 1222 may cover all the conductor patches 123, and each conductor patch 123 may be electrically connected to the metal layer 121 through an electrical connector, so that the conductor patches 123, the dielectric substrate 122 and the metal layer 121 may form a mushroom-type electromagnetic bandgap structure 120, and the electromagnetic bandgap structure 120 has a band resistance that may affect the transmission of electromagnetic waves in a certain frequency band.

It is understood that the dielectric substrate 122 may be made of polytetrafluoroethylene (FR 4), and of course, the dielectric substrate 122 may also be made of other materials conforming to the base material of the patch antenna.

It is understood that the plurality of conductor patches 123 are periodically arranged, which may mean that the distance between any two adjacent conductor patches 123 is the same.

It is understood that a plurality of conductor patches 123 may be periodically arranged in a matrix on the second face 1222. For example, as shown in fig. 2, a plurality of conductor patches 123 of three rows and three columns may be arranged on the second face 1222. Of course, the plurality of conductor patches 123 may be periodically arranged in other forms, for example, the conductor patches 123 are hexagonal, and each conductor patch 123 may be periodically arranged along the edge of the conductor patch 123 adjacent to the conductor patch 123. The embodiment of the present application does not limit the specific form of the periodic arrangement of the plurality of conductor patches 123.

It is to be understood that the shape of the conductor patch 123 may be a rectangle as shown in fig. 2, or may be a regular shape such as a triangle, a pentagon, a hexagon, or an irregular shape, and the shape of the conductor patch 123 is not limited in the embodiment of the present application.

It is understood that any two adjacent conductor patches 123 may be disposed at intervals, so that the dielectric substrate 122 exists between any two adjacent conductor patches 123, and thus, the conductor patches 123 and the dielectric substrate 122 may form a periodic arrangement structure of conductors, dielectrics, conductors, and dielectrics … …, and the periodic structure may reduce wireless signal transmission in a specific frequency band.

It is understood that, as shown in fig. 2, the first side 1221 of the dielectric substrate 122 may be located between the pixel defining layer 110 and the second side 1222 of the dielectric substrate 122, and the metal layer 121 may be located between the plurality of conductor patches 123 and the pixel defining layer 110, that is, the metal layer 121 is closer to the pixel defining layer 110 than the plurality of conductor patches 123, which may reduce the difficulty of electrically connecting the metal layer 121 and the pixel defining layer 110 for wiring, and save the length of the wiring.

It is understood that in the related art, the display device 100 includes an upper substrate, one side of which is provided with the metal layer 121, and the other side of which covers a glass cover plate. Since the metal layer 121 of the embodiment of the present application is located on the first surface 1221 of the dielectric substrate 122, the dielectric substrate 122 of the embodiment of the present application can be reused as an upper substrate of the display device 100, and the glass cover plate can cover the plurality of conductor patches 123 on the second surface 1222 of the display device 100, so that the space occupied by the electromagnetic bandgap structure 120 can be further saved, and the miniaturization of the display device 100 can be realized.

In the display device 100 according to the embodiment of the application, the electromagnetic bandgap structure 120 includes the dielectric substrate 122, the plurality of conductor patches 123 and the metal layer 121, the plurality of conductor patches 123 are periodically disposed on the second side 1222 of the dielectric substrate 122 at intervals, and the metal layer 121 is disposed on the first side 1221 of the dielectric substrate 122, so that the conductor patches 123, the dielectric substrate 122 and the metal layer 121 can form the mushroom-shaped electromagnetic bandgap structure 120, and the electromagnetic bandgap structure 120 has a simple structure and can occupy a smaller space.

Wherein each conductor patch 123 may be electrically connected to metal layer 121 via an electrical connector, which may be a metal plated hole. As shown in fig. 2, a plurality of vias 124 may be formed in the dielectric substrate 122, and each via 124 penetrates through the first surface 1221 and the second surface 1222 of the dielectric substrate 122. The walls of each via 124 may be provided with a metal plating layer, and the metal plating layer may electrically connect the metal layer 121 on the first side 1221 and the conductor patch 123 on the second side 1222, so that each conductor patch 123 may be electrically connected to the metal layer 121 through one metal plating layer.

It is understood that the vias 124 may be disposed perpendicular to the first and

second faces

1221, 1222 of the dielectric substrate 122 for ease of processing. A via 124 may be opened in one of the conductor patches 123. From the process point of view, the entire metal layer 121 is deposited on the first surface 1221 of the dielectric substrate 122, the entire conductor patch 123 is deposited on the second surface 1222 of the dielectric substrate 122, then the space between the adjacent conductor patches 123 is formed by etching, then the via hole 124 is formed by drilling on the conductor patch 123, and finally the metal plating layer is formed by copper deposition, tin plating and other processes, and at this time, the metal plating layer of the via hole 124 can electrically connect the conductor patch 123 and the metal layer 121 without the need of a lead.

According to the display device 100 provided by the embodiment of the application, the via holes 124 with the metal coatings are arranged on the dielectric substrate 122, each conductor patch 123 can be electrically connected with the metal layer 121 through the via hole 124, on one hand, the electrical connection between the conductor patch 123 and the metal layer 121 is firmer, on the other hand, the display device 100 does not need to be additionally provided with an electric connector, and raw materials can be saved.

When the via holes 124 are formed in the dielectric substrate 122, the frequency band gap of the electromagnetic band gap structure 120 is affected by the size of the conductor patches 123, the distance between the conductor patches 123, the aperture size of the via holes 124, the thickness of the dielectric substrate 122, the relative dielectric constant of the dielectric substrate 122, and other factors.

For example, as the area of the conductor patch 123 becomes larger, the frequency band gap center frequency point of the electromagnetic band gap structure 120 is reduced, and the bandwidth is basically unchanged; as the distance between two adjacent conductor patches 123 increases, the frequency band gap central frequency point of the electromagnetic band gap structure 120 does not change greatly, and the bandwidth does not change greatly; as the aperture of the via hole 124 becomes larger, the frequency band gap center frequency point of the electromagnetic band gap structure 120 is reduced, and the bandwidth is widened; as the thickness of the dielectric substrate 122 increases, the frequency band gap center frequency point of the electromagnetic band gap structure 120 moves to a low frequency, and the bandwidth is severely widened; with the increase of the relative dielectric constant of the dielectric substrate 122, the frequency band gap center frequency point of the electromagnetic band gap structure 120 is reduced, and the bandwidth is reduced.

Based on this, in practical use, the size of each parameter of the electromagnetic bandgap structure 120 can be adjusted according to the frequency range of the wireless signal transmitted by the antenna device 200. For example, when the antenna device 200 transmits a low frequency signal, the electromagnetic bandgap structure 120 may be formed with a via 124 having a large aperture, for example, a via 124 having a 3 mm to 5 mm aperture. At this time, the large-aperture via hole 124 may increase the light transmittance of the display device 100 compared to the small-aperture via hole 124, and the camera module of the electronic device 10 may collect external light through the via hole 124, so as to realize full-screen display of the display device 100.

Referring to fig. 4 in conjunction with fig. 2, fig. 4 is a second structural schematic diagram of an electronic device according to an embodiment of the present disclosure. In order to improve the light transmittance of the display device 100, in the display device 100 of the embodiment of the present application, the plurality of conductor patches 123 may not be attached to the entire second surface 1222 of the dielectric substrate 122.

As shown in fig. 4, the second face 1222 of the dielectric substrate 122 may include a first region 1222a and a second region 1222b connected to each other, and when the antenna device 200 is disposed on the side of the display device 100, the first distance from the antenna device 200 of the first region 1222a may be smaller than the second distance from the antenna device 200 of the second region 1222b, so that the first region 1222a may be a region on the second face 1222 near the antenna device 200, and the second region 1222b may be a region on the second face 1222 distant from the antenna device 200.

It is understood that the first and second distances may be distances from the antenna device 200 in the same direction of the first and

second regions

1222a and 1222 b. For example, the first distance may be the shortest distance of the first area 1222a from the antenna device 200 in the horizontal direction; the second distance may be the shortest distance of the second area 1222b from the antenna device 200 in the horizontal direction.

At this time, the plurality of conductor patches 123 may be periodically arranged within the first region 1222 a. The plurality of conductor patches 123 are closer to the antenna device 200, and on one hand, the electromagnetic bandgap structure 120 can more effectively reduce the transmission of wireless signals to the display device 100, which affects the system efficiency of the antenna device 200; on the other hand, the electromagnetic bandgap structure 120 may not need to cover the entire display region of the display device 100, so that the light transmittance of the display device 100 may be improved.

To further reduce the influence of the display device 100 on the performance of the antenna device 200, please refer to fig. 5 in combination with fig. 4, and fig. 5 is a schematic cross-sectional view of the display device shown in fig. 4 along the direction P1 to P2. The display device 100 may include a layer structure of a driving circuit layer 140, a conductive layer 150, an anode layer 130, a pixel defining layer 110, an electromagnetic bandgap structure 120, and the like, which are sequentially stacked.

The pixel definition layer 110 may include a plurality of display pixels 111. The anode layer 130 may be stacked on a side of the pixel defining layer 110 facing away from the electromagnetic bandgap structure 120, and the anode layer 130 includes a plurality of anodes 131, and each anode 131 may be electrically connected to one display pixel 111 of the pixel defining layer 110.

The driving circuit layer 140 is stacked on a side of the anode layer 130 away from the pixel defining layer 110, and the driving circuit layer 140 is provided with a plurality of driving units 141. The anode layer 130 is electrically connected to the driving circuit layer 140 and is configured to control each driving unit 141 of the driving circuit layer 140, and each driving unit 141 is configured to drive one display pixel 111. The driving unit 141 includes a light-opaque portion such as a thin film transistor.

The conductive layer 150 is disposed between the anode layer 130 and the driving circuit layer 140. The conductive layer 150 is formed with a plurality of curved conductive traces 151, and the conductive traces 151 may be disposed corresponding to the second region 1222b of the second surface 1222 of the dielectric substrate 122, that is, the conductive traces 151 may be disposed in a region of the conductive layer 150 away from the antenna device 200. Each anode 131 is electrically connected to one driving unit 141 through one conductive line 151.

The electromagnetic bandgap structure 120 is disposed on the pixel defining layer 110, the anode layer 130 and the electromagnetic bandgap structure 120 are disposed on two sides of the pixel defining layer 110, respectively, and the plurality of driving units 141 of the metal layer 121, the anode layer 130 and the driving circuit layer 140 of the electromagnetic bandgap structure 120 may drive the plurality of display pixels 111 together.

In the display device 100 of the embodiment of the application, the driving circuit layer 140 may be electrically connected to a positive power supply, and the metal layer 121 of the electromagnetic bandgap structure 120 may be electrically connected to a negative power supply, and when the positive power supply and the negative power supply are powered on, a current may flow in the driving circuit layer 140, the anode layer 130, the pixel defining layer 110, and the conductive layer 150, so that under the action of the current, the display pixels 111 of the pixel defining layer 110 are driven and may emit light, so as to implement the display function of the display device 100. Moreover, the conductive line 151 in the conductive layer 150 may be disposed corresponding to the second area 1222b of the second surface 1222 of the dielectric substrate 122, and the distance between the conductive line 151 and the antenna device 200 is relatively long, so as to further reduce the influence of other metal wires in the display device 100 on the radiation performance of the antenna device 200.

It is understood that the above is only an exemplary example of the internal structure of the display device 100, and the display device 100 may further include a substrate (not shown) for carrying the display device 100, a planarization layer (not shown), a touch layer (not shown), a polarizer (not shown), and the like. The substrate may serve as a supporting platform of the display device 100, and the driving circuit layer 140 may be disposed on the substrate. The planarization layer may be disposed between the anode layer 130 and the driving circuit layer 140 to fill up the gap and the recess between the anode layer 130 and the driving circuit layer 140. The touch layer may be used to detect a user touch operation. A polarizer can be further arranged on the touch layer and can be used for preventing internal light from being transmitted out. It should be noted that, in some other embodiments, a part of the structure may be increased or decreased as needed, and the embodiments of the present application are not limited herein.

To further increase the light transmittance of the display device 100, please refer to fig. 6 and 7, in which fig. 6 is a second structural diagram of the display device shown in fig. 1, and fig. 7 is a cross-sectional diagram of the display device shown in fig. 6 along a direction from M1 to M2. The display device 100 further includes a first display region 101 and a second display region 102 connected to each other, a light transmittance of the first display region 101 is greater than a light transmittance of the second display region 102, a pixel defining layer 110 may be disposed in the first display region 101 and the second display region 102, and an electromagnetic bandgap structure 120 may be disposed in the second display region 102.

The first display area 101 and the second display area 102 may be used for displaying text or images, and the first display area 101 and the second display area 102 may display the same image together, for example, the second display area 102 displays a part of a preset image, and the first display area 101 displays the rest of the preset image. The first display area 101 and the second display area 102 may also display different images, for example, the second display area 102 displays a preset image, and the first display area 101 displays a taskbar image.

It is understood that the area of the first display area 101 may be much smaller than the second display area 102, the second display area 102 may be disposed around the first display area 101, and the peripheries of the first display area 101 may all be adjacent to the second display area 102. The second display area 102 may also partially surround the first display area 101, and a part of the edge of the first display area 101 is adjacent to the second display area 102.

It is understood that the second display area 102 in the embodiment of the present application may serve as a main display area of the display device 100, and the first display area 101 may serve as an auxiliary display area of the display device 100. The light transmittance of the first display region 101 may be greater than that of the second display region 102. When the image sensor of the electronic device 10 is disposed corresponding to the first display area 101, the image sensor may collect light through the first display area 101.

It can be understood that there are many ways to achieve the light transmittance of the first display region 101 greater than the light transmittance of the second display region 102. For example, the anode and the conductive line disposed in the display device 100 corresponding to the first display region 101 may be transparent anodes and transparent conductive lines. This is not limited in the embodiments of the present application.

When the light transmittance of the first display region 101 is greater than that of the second display region 102, since the electromagnetic bandgap structure 120 includes the dielectric substrate 122, the metal layer 121 and the conductor patch 123, the light transmittance of these materials is generally low, and therefore, the electromagnetic bandgap structure 120 can be disposed corresponding to the second display region 102. At this time, the electromagnetic band gap structure 120 does not affect the light transmittance of the first display region 101, and the image sensor can still collect light through the first display region 101, so that the under-screen image capture can be realized.

In the display device 100 of the embodiment of the application, the electromagnetic band gap structure 120 is arranged corresponding to the second display area 102, the electromagnetic band gap structure 120 does not affect the light transmittance of the first display area 101, the display device 100 can still achieve image shooting under a screen, and the comprehensive screen arrangement of the display device 100 can be achieved.

It is understood that the dielectric substrate 122 may also be a dielectric substrate 122 with high light transmittance, in this case, the metal layer 121 and the conductor patch 123 may be made of a transparent material, for example, an indium tin oxide material, in this case, the whole electromagnetic bandgap structure 120 may have high light transmittance, and the electromagnetic bandgap structure 120 may also be disposed corresponding to the first display region 101 and the second display region 102, so as to facilitate the production and processing of the electromagnetic bandgap structure 120.

It is understood that, when the electromagnetic bandgap structure 120 can be disposed corresponding to the first display region 101 and the second display region 102, the image sensor can be disposed corresponding to one via 124 of the electromagnetic bandgap structure 120, so as to further improve the performance of the image sensor for collecting light.

Based on the structure of the display device 100, please refer to fig. 8 in combination with fig. 1, and fig. 8 is a third structural schematic diagram of an electronic apparatus according to an embodiment of the present disclosure. The electronic device 10 may further include a ground plane 300 in addition to the antenna device 200 and the display device 100, the antenna device 200 may include at least a radiator 210 and a feed 220, the radiator 210 may be electrically connected to the ground plane 300, the feed 220 may provide a driving signal, and the driving signal may drive the radiator 210 to transmit the aforementioned wireless signal.

The ground plane 300 is used to form a common ground. The ground plane 300 may include a ground portion, and the ground portion may be, for example, an end portion of the ground plane 300, or may also be a protruding structure on the ground plane 300, or may also be a pad formed on the ground plane 300, or may also be an area of the ground plane 300, and the like. The radiator 210 may be provided with a ground terminal, and the radiator 210 may be electrically connected to the ground of the ground plane 300 through the ground terminal, so as to implement grounding of the radiator 210.

The ground plane 300 may be located at one side of the display device 100. For example, the ground plane 300 may be located on a side of the pixel defining layer 110 away from the electromagnetic bandgap structure 120, the ground plane 300 and the electromagnetic bandgap structure 120 may form a receiving space 800, and the radiator 210 of the antenna device 200 may not be disposed in the receiving space 800, that is, the radiator 210 may be disposed outside the receiving space 800.

It is understood that the ground plane 300 may be a midplane of a middle frame of the electronic device 10, a circuit board, a back case, etc. to enable multiplexing of these structures; alternatively, the ground plane 300 may be a separate structure. This is not limited in the embodiments of the present application.

In the electronic device 10 according to the embodiment of the application, the radiator 210 of the antenna apparatus 200 is located outside the accommodating space 800, and the wireless signal transmitted by the radiator 210 is not reduced by the electromagnetic bandgap structure 120 located above the radiator 210 and is not shielded by the ground plane 300 located below the radiator 210, so that the radiator 210 may have a good clear area, and the radiation performance of the radiator 210 is better.

Please refer to fig. 8 and fig. 9 again, fig. 9 is a fourth schematic structural diagram of the electronic device according to an embodiment of the present disclosure, in which the electronic device 10 may further include a middle frame 400, and the radiator 210 may be a metal branch 440 on a frame 420 of the middle frame 400 of the electronic device 10.

The display device 100 may be connected to the middle frame 400, and the middle frame 400 may have a thin plate-like or sheet-like structure or a hollow frame structure. The middle frame 400 may include a middle plate 410 and a bezel 420, the bezel 420 is connected to a periphery of the middle plate 410, the bezel 420 protrudes from the middle plate 410 toward the display device 100 or the rear case 500, the bezel 420 is connected to the display device 100 and the rear case 500, the middle plate 410 is used for providing a supporting function for electronic devices or functional components in the electronic device 10, and the bezel 420 is used for forming a side frame body of the electronic device 10, so that the middle frame 400 may mount the electronic devices and the functional components of the electronic device 10 together.

When the material of the bezel 420 includes metal, the radiator 210 may include a metal branch 440 on the bezel 420, as shown in fig. 9, a slot 430 may be disposed on the middle frame 400, the slot 430 may enable the metal branch 440 to be formed on the bezel 420, and the radiator 210 may include the metal branch 440.

It is to be understood that the above is only one form in which the radiator 210 is formed on the middle frame 400. For example, a U-shaped slot may be provided in the middle frame 400 such that the rim 420 forms a metal stub 440 with a free end. The embodiment of the present application does not limit the forming manner of the radiator 210 on the middle frame 400.

It is understood that the metal branches 440 may be formed at the top, bottom, side, and corners of the bezel 420, and the radiator 210 may be formed at any portion of the bezel 420. The embodiment of the present application does not limit the specific position of the radiator 210.

In the antenna apparatus 200 of the embodiment of the application, the radiator 210 is formed on the frame 420, and because the possibility that metal and conductor exist in the upper and lower spaces of the frame 420 is low, the radiator 210 may have a better clearance environment, on one hand, the radiator 210 does not need to occupy an additional space of the electronic device 10, and on the other hand, the electronic device 10 does not need to additionally provide a clearance area for the radiator 210, which may further achieve miniaturization of the electronic device 10.

Referring again to fig. 9, the electronic device 10 may further include a rear case 500, a circuit board 600, and a battery 700.

The circuit board 600 is disposed on the middle frame 400 to be fixed, and the circuit board 600 is sealed inside the electronic device 10 by the rear case 500. The circuit board 600 may be a main board of the electronic device 10. The circuit board 600 may have a processor integrated thereon, and may further have one or more of a headset interface, an acceleration sensor, a gyroscope, a motor, and other functional components integrated thereon. Meanwhile, the display device 100 may be electrically connected to the circuit board 600 to control the display of the display device 100 through a processor on the circuit board 600.

The battery 700 may be disposed on the middle frame 400, and the battery 700 is sealed inside the electronic device 10 by a rear cover. Meanwhile, the battery 700 is electrically connected to the circuit board 600 to enable the battery 700 to supply power to the electronic device 10. Also, a power management circuit may be provided on the circuit board 600. The power management circuit is used to distribute the voltage provided by the battery 700 to the various electronic devices in the electronic device 10.

The rear case 500 is connected to the middle frame 400. For example, the rear case 500 may be attached to the middle frame 400 by an adhesive such as a double-sided tape to achieve connection with the middle frame 400. Among other things, the rear case 500 is used to seal the electronic devices and functional components of the electronic device 10 inside the electronic device 10 together with the middle frame 400 and the display device 100, so as to protect the electronic devices and functional components of the electronic device 10.

It is understood that the electronic device 10 may include components such as a camera module, a sensor assembly, etc., in addition to the components described above, and will not be described in detail herein.

It is to be understood that in the description of the present application, terms such as "first", "second", and the like are used solely for distinguishing between similar objects and are not to be construed as indicating or implying relative importance or implicitly indicating a number of indicated technical features.

The display device and the electronic device provided in the embodiments of the present application are described in detail above. The principles and embodiments of the present application are described herein using specific examples, which are presented only to aid in the understanding of the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and the application scope may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A display device is applied to an electronic device capable of transmitting wireless signals; the display device includes:

a pixel definition layer comprising a plurality of display pixels; and

2. The display device according to claim 1, wherein the electromagnetic bandgap structure further comprises:

the dielectric substrate comprises a first surface and a second surface which are oppositely arranged, and the metal layer is positioned on the first surface; and

the plurality of conductor patches are periodically arranged on the second surface, any two adjacent conductor patches are arranged at intervals, and each conductor patch is electrically connected with the metal layer.

3. The display device according to claim 2, wherein the first face is located between the pixel defining layer and the second face.

4. The display device according to claim 2, wherein the dielectric substrate is provided with a plurality of via holes, each via hole penetrates through the first surface and the second surface, a metal coating is provided on a hole wall of each via hole, and each conductor patch is electrically connected to the metal layer through one metal coating.

5. The display device according to claim 2, wherein the electronic device comprises a bezel and an antenna device, the bezel is connected to the display device, and the antenna device is disposed on the bezel;

wherein the second face includes a first region and a second region connected to each other, a distance between the first region and the antenna device is smaller than a distance between the second region and the antenna device, and the plurality of conductor patches are periodically arranged in the first region.

6. The display device according to claim 5, further comprising:

the anode layer is arranged on one side, away from the electromagnetic band gap structure, of the pixel definition layer in a laminated mode and comprises a plurality of anodes, and each anode is connected with one display pixel;

the driving circuit layer is arranged on one side, away from the pixel defining layer, of the anode layer in a laminated mode and comprises a plurality of driving units; and

and the conductive layer is arranged between the anode layer and the driving circuit layer, a plurality of lead lines are arranged in the conductive layer in a region corresponding to the second region, and each anode is connected to one driving unit through one lead line.

7. The display device according to any one of claims 1 to 6, wherein the display device further comprises a first display region and a second display region which are connected oppositely, the light transmittance of the first display region is greater than that of the second display region, the pixel defining layer is located in the first display region and the second display region, and the electromagnetic bandgap structure is located in the second display region.

8. An electronic device, comprising:

the display device according to any one of claims 1 to 7; and

an antenna device including a radiator for transmitting a wireless signal;

9. The electronic device of claim 8, further comprising:

the grounding plane is positioned on one side, away from the electromagnetic band gap structure, of the pixel defining layer, and a containing space is formed between the grounding plane and the electromagnetic band gap structure; wherein,

the radiator is electrically connected with the ground plane, and the radiator is arranged outside the accommodating space.

10. The electronic device of claim 8, further comprising:

the frame, display device with the frame is connected, the frame includes the metal stub, the irradiator includes the metal stub.