阅读说明：本技术 显示面板及显示装置 (Display panel and display device ) 是由 张毅 杨慧娟 刘庭良 廖茂颖 舒晓青 王予 于 2021-07-30 设计创作，主要内容包括：本公开提供一种显示面板及显示装置,属于显示技术领域,其可解决现有的显示面板能耗较大的问题。本公开的显示面板,具有显示区和围绕显示区的非显示区,显示区包括屏下摄像头区和非屏下摄像头区,显示面板包括：基底、位于基底上设置于屏下摄像头区的第一发光器件、位于基底上且设置于非屏下摄像头区的第二发光器件、位于基底上的第一电压信号线和第二电压信号线；第一发光器件的阴极与第一电压信号线电连接；第二发光器件的阴极与第二电压信号线电连接；第一电压信号线和第二电压信号线的电压信号不同。(The utility model provides a display panel and display device belongs to and shows technical field, and it can solve the great problem of current display panel energy consumption. The display panel of this disclosure has the display area and around the non-display area of display area, and the display area includes camera area under the screen and camera area under the non-screen, and display panel includes: the device comprises a substrate, a first light-emitting device, a second light-emitting device, a first voltage signal line and a second voltage signal line, wherein the first light-emitting device is positioned on the substrate and is arranged in a camera area under a screen; the cathode of the first light-emitting device is electrically connected with the first voltage signal line; the cathode of the second light emitting device is electrically connected with the second voltage signal line; the first voltage signal line and the second voltage signal line have different voltage signals.)

1. A display panel having a display area and a non-display area surrounding the display area, the display area including an off-screen camera area and a non-off-screen camera area, the display panel comprising: the non-screen camera comprises a substrate, a first light-emitting device, a second light-emitting device, a first voltage signal line and a second voltage signal line, wherein the first light-emitting device is positioned on the substrate and is arranged in the under-screen camera area;

the cathode of the first light-emitting device is electrically connected with the first voltage signal line;

the cathode of the second light emitting device is electrically connected to the second voltage signal line,

the first voltage signal line and the second voltage signal line have different voltage signals.

2. The display panel according to claim 1, wherein a voltage absolute value of the voltage signal of the first voltage signal line is larger than a voltage absolute value of the voltage signal of the second voltage signal line.

3. The display panel according to claim 1, characterized in that the display panel further comprises: a first common cathode and a second common cathode;

the cathode of the first light-emitting device is electrically connected with the first common cathode, and the first common cathode is lapped with the first voltage signal line;

the cathode of the second light emitting device is electrically connected with the second common cathode, and the second common cathode is lapped with the second voltage signal line.

4. The display panel according to claim 3, wherein the cathode of the first light emitting device and the first common cathode are of an integrally molded structure;

the cathode of the second light emitting device and the second common cathode are of an integrally formed structure.

5. The display panel according to claim 1, characterized in that the display panel further comprises: the first pixel circuit is positioned on the substrate and arranged in the under-screen camera area, and the second pixel circuit is positioned on the substrate and arranged in the non-under-screen camera area; the first pixel circuit includes: a first thin film transistor; the second pixel circuit includes: a second thin film transistor;

the anode of the first light-emitting device is electrically connected with the drain of the first thin film transistor;

an anode of the second light emitting device is electrically connected to a drain of the second thin film transistor.

6. The display panel according to claim 5, characterized in that the display panel further comprises: a first conductive layer on the substrate;

the first conductive layer includes: a gate of the first thin film transistor, a gate of the second thin film transistor, the first voltage signal line, and the second voltage signal line.

7. The display panel according to claim 5, characterized in that the display panel further comprises: a second conductive layer on the substrate;

the second conductive layer includes: a source and a drain of the first thin film transistor, a source and a drain of the second thin film transistor, the first voltage signal line, and the second voltage signal line.

8. The display panel according to claim 5, characterized in that the display panel further comprises: the third conducting layer and the fourth conducting layer are sequentially arranged on the substrate in an insulating mode along the direction deviating from the substrate;

the first voltage signal line includes: a first sub-voltage signal line and a second sub-voltage signal line;

the second voltage signal line includes: a third sub-voltage signal line and a fourth sub-voltage signal line;

the third conductive layer includes: a gate electrode of the first thin film transistor, the first sub-voltage signal line, and the third sub-voltage signal line;

the fourth conductive layer includes: the source and drain of the first thin film transistor, the source and drain of the second thin film transistor, the second sub-voltage signal line, and the fourth sub-voltage signal line.

9. The display panel according to claim 8, characterized in that the display panel further comprises: a plurality of gate lines and a plurality of data lines on the substrate and extending from the under-screen camera region to the non-under-screen camera region;

the third conductive layer further includes: the grid line;

the fourth conductive layer further includes: the data line.

10. The display panel according to claim 1, wherein the first voltage signal line and the second voltage signal line each include a VSS signal line.

11. A display device characterized in that it comprises a display panel according to any one of claims 1 to 10.

12. The display device of claim 11, further comprising a camera;

the camera is positioned on one side of the first light-emitting device close to the substrate.

Technical Field

The disclosure belongs to the technical field of display, and particularly relates to a display panel and a display device.

Background

An Organic Light-Emitting Diode (OLED) is a Light-Emitting device using an Organic solid semiconductor as a Light-Emitting material, and has a wide application prospect because of its advantages of simple preparation process, low cost, low power consumption, high luminance, wide working temperature application range, and the like. To meet the user's demand for a large screen ratio, display panels are being developed toward full-screen.

In the current full-screen design, a camera and other devices are placed below a display panel, namely a camera area, and in order to ensure the brightness uniformity of the whole display area, a power supply voltage signal with a higher voltage is often required to be input into a pixel unit in the whole display area, so that the power consumption of the display panel is increased. And the whole display panel works under higher voltage, which affects the service life of the display panel.

Disclosure of Invention

The present disclosure is directed to at least one of the problems of the prior art, and provides a display panel and a display device.

In a first aspect, an embodiment of the present disclosure provides a display panel having a display area and a non-display area surrounding the display area, where the display area includes an off-screen camera area and a non-off-screen camera area, and the display panel includes: the non-screen camera comprises a substrate, a first light-emitting device, a second light-emitting device, a first voltage signal line and a second voltage signal line, wherein the first light-emitting device is positioned on the substrate and is arranged in the under-screen camera area;

the cathode of the first light-emitting device is electrically connected with the first voltage signal line;

the cathode of the second light emitting device is electrically connected with the second voltage signal line;

the first voltage signal line and the second voltage signal line have different voltage signals.

Optionally, a voltage absolute value of the voltage signal of the first voltage signal line is greater than a voltage absolute value of the voltage signal of the second voltage signal line.

Optionally, the display panel further comprises: a first common cathode and a second common cathode;

the cathode of the first light-emitting device is electrically connected with the first common cathode, and the first common cathode is lapped with the first voltage signal line;

the cathode of the second light emitting device is electrically connected with the second common cathode, and the second common cathode is lapped with the second voltage signal line.

Optionally, the cathode of the first light emitting device and the first common cathode are an integrally formed structure;

the cathode of the second light emitting device and the second common cathode are of an integrally formed structure.

Optionally, the display panel further comprises: the first pixel circuit is positioned on the substrate and arranged in the under-screen camera area, and the second pixel circuit is positioned on the substrate and arranged in the non-under-screen camera area; the first pixel circuit includes: a first thin film transistor; the second pixel circuit includes: a second thin film transistor;

the anode of the first light-emitting device is electrically connected with the drain of the first thin film transistor;

an anode of the second light emitting device is electrically connected to a drain of the second thin film transistor.

Optionally, the display panel further comprises: a first conductive layer on the substrate;

the first conductive layer includes: a gate of the first thin film transistor, a gate of the second thin film transistor, the first voltage signal line, and the second voltage signal line.

Optionally, the display panel further comprises: a second conductive layer on the substrate;

the second conductive layer includes: a source and a drain of the first thin film transistor, a source and a drain of the second thin film transistor, the first voltage signal line, and the second voltage signal line.

Optionally, the display panel further comprises: the third conducting layer and the fourth conducting layer are sequentially arranged on the substrate in an insulating mode along the direction deviating from the substrate;

the first voltage signal line includes: a first sub-voltage signal line and a second sub-voltage signal line;

the second voltage signal line includes: a third sub-voltage signal line and a fourth sub-voltage signal line;

the third conductive layer includes: a gate electrode of the first thin film transistor, the first sub-voltage signal line, and the third sub-voltage signal line;

the fourth conductive layer includes: the source and drain of the first thin film transistor, the source and drain of the second thin film transistor, the second sub-voltage signal line, and the fourth sub-voltage signal line.

Optionally, the display panel further comprises: a plurality of gate lines and a plurality of data lines on the substrate and extending from the under-screen camera region to the non-under-screen camera region;

the third conductive layer further includes: the grid line;

the fourth conductive layer further includes: the data line.

Optionally, the first voltage signal line and the second voltage signal line each include a VSS signal line.

In a second aspect, embodiments of the present disclosure provide a display device comprising a display panel as provided above.

Optionally, the display device further comprises a camera;

the camera is positioned on one side of the first light-emitting device close to the substrate.

Drawings

FIG. 1 is a schematic diagram of an exemplary display panel;

FIG. 2 is a graph of IDVD characteristics of a drive transistor in a pixel circuit;

FIG. 3 is a graph of the IV characteristics of an OLED device;

FIG. 4 is a schematic diagram of the IDVD characteristic of the drive transistor of the pixel circuit of FIG. 2 combined with the IV characteristic of the OLED device of FIG. 3;

fig. 5 is a schematic structural diagram of a display panel according to an embodiment of the disclosure.

Detailed Description

For a better understanding of the technical aspects of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Fig. 1 is a schematic structural diagram of an exemplary display panel, as shown in fig. 1, the display panel having a display area and a non-display area surrounding the display area, the display area including: camera district and non-camera district under the screen, this display panel includes: a substrate (not shown), a light emitting device 10 on the substrate and disposed in the under-screen camera area and the non-under-screen camera area, and a voltage signal line 20 on the substrate; the cathode of each light emitting device 10 is connected to a voltage signal line 20. It should be noted that the voltage signal lines 20 may be specifically disposed in the non-display area to reduce the light blockage in the display area. It is understood that, in practical applications, in order to facilitate the routing of the voltage signal lines 20, the voltage signal lines 20 may also be disposed in a display area, such as a non-under-screen camera area, which is not limited herein.

Taking light-emitting device 10 as an example of an OLED device, the OLED device may include an anode and a cathode disposed opposite to each other, and a light-emitting layer between the anode and the cathode. The anode of the OLED device may be electrically connected to the drain of the driving transistor in the pixel circuit through a via hole penetrating through the planarization layer, and the anode may be made of ITO (indium tin oxide), Indium Zinc Oxide (IZO), zinc oxide (ZnO), or other materials. The light-emitting layer can comprise a small molecule organic material or a polymer molecule organic material, can be a fluorescent light-emitting material or a phosphorescent light-emitting material, and can emit red light, green light and blue light under the drive of electric fields of an anode and a cathode, or can emit white light and the like; in addition, according to actual different needs, in different examples, the light-emitting layer may further include functional layers such as an electron injection layer, an electron transport layer, a hole injection layer, and a hole transport layer. The cathode covers the light-emitting layer, and may be made of a metal material such as lithium (Li), aluminum (Al), magnesium (Mg), or silver (Ag).

The voltage signal line 20 may be a VSS signal line, i.e., a dc low voltage signal line, a VDD signal line corresponding to the VSS signal line, i.e., a dc high voltage signal line, is further disposed in the display panel, a current may be formed between the dc high voltage signal line and the dc low voltage signal line, and the driving transistor in the pixel circuit may change its turn-on degree under the control of the data signal to control the voltage across the anode and the cathode of the OLED device, so as to control the magnitude of the current flowing through the OLED device, thereby implementing display with different brightness.

Fig. 2 is an IDVD characteristic curve of a driving transistor in a pixel circuit, fig. 3 is an IV characteristic curve of an OLED device, fig. 4 is a schematic diagram of combining the IDVD characteristic curve of the driving transistor in the pixel circuit shown in fig. 2 with the IV characteristic curve of the OLED device shown in fig. 3, as shown in fig. 2, fig. 3 and fig. 4, when the brightness of 400 nit is required for the whole display panel, the current of the driving transistor in the non-under-screen camera area is 2.2E-8A, and the current of the driving transistor in the under-screen camera area is 4.0E-8A, at this time, the voltage across the OLED device in the non-under-screen camera area is 3.6 volts (V), the voltage across the OLED device in the under-screen camera area is 3.9V, and the voltage across the OLED device in the under-screen camera area is greater than the voltage across the OLED device in the non-under-screen camera area, which requires an increase in the voltage (absolute value) of a VSS signal line, because both are connected to the same voltage signal line, relatively high voltage (absolute value) is often required to be set on the VSS signal line to satisfy normal operation of the OLED, thereby increasing power consumption of the display panel. And the whole display panel works under relatively high voltage, which affects the service life of the display panel.

In order to solve at least one of the above technical problems, embodiments of the present disclosure provide a display panel and a display device, which will be described in further detail with reference to the accompanying drawings and detailed description.

Fig. 5 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure, as shown in fig. 5, the display panel has a display area and a non-display area surrounding the display area, the display area includes an off-screen camera area and a non-off-screen camera area, and the display panel includes: a substrate (not shown in the figure), a first light emitting device 101 located on the substrate and disposed in the under-screen camera area, a second light emitting device 102 located on the substrate and disposed in the non-under-screen camera area, a first voltage signal line 201 and a second voltage signal line 202 located on the substrate; the cathode of the first light emitting device 101 is electrically connected to the first voltage signal line 201; the cathode of the second light emitting device 102 is electrically connected to a second voltage signal line 202; the first voltage signal line 201 and the second voltage signal line 202 have different voltage signals.

It should be noted that, in the embodiment of the present disclosure, the first voltage signal line 201 and the second voltage signal line 202 are both the same type of signal line, and specifically may be VSS signal lines, that is, dc low voltage signal lines. Accordingly, a VDD signal line, i.e., a dc high voltage signal line, corresponding to the VSS signal line is also provided in the display panel. The first light emitting device 101 and the second light emitting device 102 have the same structure, and each includes an anode and a cathode that are disposed opposite to each other, and a light emitting layer between the anode and the cathode. Also, the pixel circuits to which the first and second light emitting devices 101 and 102 are connected are the same, and the VDD signal line may provide a direct current high voltage signal to the first and second light emitting devices 101 and 102. The first voltage signal line 201 and the second voltage signal line 202 may be disposed in the non-display area to reduce the light shielding of the display area. It is to be understood that, in practical applications, in order to facilitate the routing of the first voltage signal line 201 and the second voltage signal line 202, the first voltage signal line 201 and the second voltage signal line 202 may also be disposed in a display area, for example, a non-under-screen camera area, which is not limited herein.

In the display panel provided by the embodiment of the present disclosure, the cathode of the first light emitting device 101 in the off-screen camera area is connected to the first voltage signal line 201, and the cathode of the second light emitting device 102 in the non-off-screen camera area is connected to the second voltage signal line 202, so that the first light emitting device 101 and the second light emitting device 102 can be supplied with the VSS signal by the first voltage signal line 201 and the second voltage signal line 202, respectively, and thus, the VSS signal input by the first light emitting device 101 and the second light emitting device 102 can be independently controlled, and specifically, the absolute voltage value of the voltage signal of the first voltage signal line 201 can be set to be greater than that of the voltage signal of the second voltage signal line, that is, a relatively high voltage is set on the first voltage signal line 201, a relatively low voltage is set on the second voltage signal line 202, and it is not necessary to set both of them to be a relatively high voltage, that is, the first light emitting device 101 and the second light emitting device 102 can work normally, so that power consumption of the display panel can be saved. And the whole display panel can be prevented from working under relatively high voltage, so that the service life of the display panel can be prolonged.

In some embodiments, the display panel further comprises: a first common cathode (not shown) and a second common cathode (not shown); the cathode of the first light emitting device 101 is electrically connected to the first common cathode, and the first common cathode is connected to the first voltage signal line 201 in an overlapping manner; the cathode of the second light emitting device 102 is electrically connected to a second common cathode, and the second common cathode is connected to the second voltage signal line 202.

The cathodes of the respective first light emitting devices 101 may be connected to a first common cathode, and then connected to the first voltage signal line 201 through the first common cathode. First, the first common cathode is a planar electrode, which has a small resistance, and thus, the connection resistance between the cathode of the first light emitting device 101 and the first voltage signal line 201 can be effectively reduced. Secondly, a large number of signal connection lines can be avoided to connect the cathode of the first light-emitting device 101 with the first voltage signal line 201, so that the wiring difficulty can be reduced, and the preparation cost can be saved. Furthermore, the first common cathode may overlap with the first voltage signal line 201, and the first common cathode may provide a larger overlapping plane for the first voltage signal line 201, so that the connection between the first common cathode and the first voltage signal line is firmer, and the problem of poor connection stability caused by the direct connection of the cathode of each first light emitting device 101 to the first voltage signal line 201 is avoided. The cathodes of the second light emitting devices 102 may be connected to the second common cathode, and then connected to the second voltage signal line 202 through the second common cathode, which has the same implementation principle and beneficial effect as those described above, and is not described herein again.

In some embodiments, the cathode of the first light emitting device 101 is an integral structure with the first common cathode; the cathode of the second light emitting device 102 and the second common cathode are an integrated structure.

The cathode of the first light emitting device 101 and the first common cathode are an integrated structure, and during the preparation process, the cathode of the first light emitting device 101 and the first common cathode may be formed by evaporating a metal material such as Al, and the cathode and the first common cathode may be formed as an integrated structure. On one hand, the two can be formed by adopting the same step, thereby reducing the preparation steps and saving the preparation cost. On the other hand, the two are the integrated into one piece structure, can avoid the connecting resistance that causes because connect between the two to be favorable to the transmission of signal, with the energy saving consumption. The cathode of the second light emitting device 102 and the second common cathode are integrally formed, and the implementation principle and the advantageous effects thereof are the same as those described above, and are not described herein again.

In some embodiments, the display panel further comprises: a first pixel circuit (not shown) located on the substrate and disposed in the under-screen camera area, and a second pixel circuit (not shown) located on the substrate and disposed in the non-under-screen camera area; the first pixel circuit includes: a first thin film transistor; the second pixel circuit includes: a second thin film transistor; an anode of the first light emitting device 101 is electrically connected to a drain of the first thin film transistor; the anode of the second light emitting device 102 is electrically connected to the drain of the second thin film transistor.

It should be noted that the first pixel circuit usually includes at least a switching transistor, a driving transistor, a storage capacitor (i.e., a conventional pixel driving circuit of 2T1C, 6T1C, or 7T 1C), and for convenience of distinguishing from a driving transistor in the second pixel circuit, the driving circuit in the first pixel circuit is defined as a first thin film transistor, and the driving transistor in the second pixel circuit is defined as a second thin film transistor. Taking the driving transistor as a bottom gate type thin film transistor as an example, the driving transistor includes a gate, a gate insulating layer, an active layer, an interlayer insulating layer, a source and a drain which are sequentially arranged along a direction departing from the substrate, the source and the drain are arranged on the same layer, and are respectively connected with the active layer through via holes penetrating through the interlayer insulating layer. An anode of the first light emitting device 101 may be electrically connected to a drain of the first thin film transistor so that the driving transistor drives the first light emitting device 101 to emit light. Likewise, the anode of the second light emitting device 102 may be electrically connected to the drain of the second thin film transistor, so that the driving transistor drives the second light emitting device 102 to emit light.

In some embodiments, the display panel further comprises: a first conductive layer (not shown) on the substrate; the first conductive layer includes: the gate of the first thin film transistor, the gate of the second thin film transistor, the first voltage signal line and the second voltage signal line.

The first conducting layer can comprise a grid electrode of the first thin film transistor, a grid electrode of the second thin film transistor, a first voltage signal line and a second voltage signal line, and therefore the grid electrode of the first thin film transistor, the grid electrode of the second thin film transistor, the first voltage signal line and the second voltage signal line are arranged on the same layer and can be made of the same material through one-time process, manufacturing steps can be reduced, and manufacturing cost is saved. The material may specifically include a metal material or an alloy material, for example, a metal single-layer or multi-layer structure formed by a metal material including molybdenum (Mo), aluminum (Al), or titanium (Ti), or an alloy including one or more of molybdenum (Mo), aluminum (Al), and titanium (Ti), for example, the multi-layer structure is a multi-metal-layer stack, such as a titanium (Ti), aluminum (Al), and titanium (Ti) three-layer metal stack.

In some embodiments, the display panel further comprises: a second conductive layer (not shown) on the substrate; the second conductive layer includes: a source and a drain of the first thin film transistor, a source and a drain of the second thin film transistor, a first voltage signal line, and a second voltage signal line.

The second conductive layer may include: the source electrode and the drain electrode of the first thin film transistor, the source electrode and the drain electrode of the second thin film transistor, the first voltage signal line and the second voltage signal line are arranged on the same layer, can be made of the same material and are manufactured by adopting a one-time process, so that the manufacturing steps can be reduced, and the manufacturing cost can be saved. The material may specifically include a metal material or an alloy material, for example, a metal single-layer or multi-layer structure formed by a metal material including molybdenum (Mo), aluminum (Al), or titanium (Ti), or an alloy including one or more of molybdenum (Mo), aluminum (Al), and titanium (Ti), for example, the multi-layer structure is a multi-metal-layer stack, such as a titanium (Ti), aluminum (Al), and titanium (Ti) three-layer metal stack.

In some embodiments, the display panel further comprises: a third conductive layer (not shown) and a fourth conductive layer (not shown) which are sequentially arranged on the substrate along a direction departing from the substrate in an insulating manner; the first voltage signal line 201 includes: a first sub voltage signal line and a second sub voltage signal line electrically connected; the second voltage signal line 202 includes: electrically connecting the third sub-voltage signal line and the fourth sub-voltage signal line; the third conductive layer includes: a gate electrode of the first thin film transistor, a first sub-voltage signal line, and a third sub-voltage signal line; the fourth conductive layer includes: the source and the drain of the first thin film transistor, the source and the drain of the second thin film transistor, the second sub-voltage signal line and the fourth sub-voltage signal line.

The first voltage signal line 201 can be a two-layer structure, specifically can be a first sub-voltage signal line and a second sub-voltage signal line which are arranged in a laminated manner, an insulating layer is arranged between the first voltage signal line and the second voltage signal line, and the first voltage signal line and the second voltage signal line are electrically connected with each other through a via hole penetrating through the insulating layer. Similarly, the second voltage signal line 202 may also have a two-layer structure, and the principle thereof is similar to that of the first voltage signal line 201, and is not described herein again.

The third conductive layer may include a gate electrode of the first thin film transistor, a first sub-voltage signal line, and a third sub-voltage signal line, so that the gate electrode of the first thin film transistor, the first sub-voltage signal line, and the third sub-voltage signal line are disposed on the same layer, may be made of the same material, and may be manufactured by a single process, which may reduce manufacturing steps and save manufacturing cost. The material may specifically include a metal material or an alloy material, for example, a metal single-layer or multi-layer structure formed by a metal material including molybdenum (Mo), aluminum (Al), or titanium (Ti), or an alloy including one or more of molybdenum (Mo), aluminum (Al), and titanium (Ti), for example, the multi-layer structure is a multi-metal-layer stack, such as a titanium (Ti), aluminum (Al), and titanium (Ti) three-layer metal stack.

The fourth conductive layer may include a source and a drain of the first thin film transistor, a source and a drain of the second thin film transistor, the second sub-voltage signal line, and the fourth sub-voltage signal line, so that the source and the drain of the first thin film transistor, the source and the drain of the second thin film transistor, the second sub-voltage signal line, and the fourth sub-voltage signal line are disposed in the same layer, may be made of the same material, and may be manufactured by a single process, thereby reducing manufacturing steps and saving manufacturing cost. The material may specifically include a metal material or an alloy material, for example, a metal single-layer or multi-layer structure formed by a metal material including molybdenum (Mo), aluminum (Al), or titanium (Ti), or an alloy including one or more of molybdenum (Mo), aluminum (Al), and titanium (Ti), for example, the multi-layer structure is a multi-metal-layer stack, such as a titanium (Ti), aluminum (Al), and titanium (Ti) three-layer metal stack.

In some embodiments, the display panel further comprises: a plurality of gate lines (not shown) and a plurality of data lines (not shown) on the substrate and extending from the under-screen camera region to the non-under-screen camera region; the first electrode layer further includes: a gate line; the second electrode layer further includes: and a data line.

The grid electrode of the first thin film transistor, the first sub-voltage signal line and the third sub-voltage signal line can be arranged on the same layer with the grid line, can be made of the same material by adopting a one-step process, and therefore the manufacturing steps can be reduced, and the manufacturing cost can be saved. The source electrode and the drain electrode of the first thin film transistor, the source electrode and the drain electrode of the second thin film transistor, the second sub-voltage signal line and the fourth sub-voltage signal line can be arranged on the same layer with the data line, can be made of the same material by adopting a one-step process, so that the preparation steps can be reduced, and the preparation cost can be saved.

The embodiment of the disclosure also provides a display device, which includes the display panel provided in any one of the above embodiments. The display device further includes: a camera; the camera is located the one side that first light emitting device is close to the basement, can be integrated in display panel's bottom with the camera to realize comprehensive screen design.

The display device can be an electronic device with a display panel, such as a mobile phone, a tablet computer, an electronic watch, a sports bracelet, a notebook computer and the like. The implementation principle and the technical effect of the display device can refer to the above discussion of the implementation principle and the technical effect of the display motherboard, and are not described herein again.

It is to be understood that the above embodiments are merely exemplary embodiments that are employed to illustrate the principles of the present disclosure, and that the present disclosure is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the disclosure, and these are to be considered as the scope of the disclosure.