CN114141851A

CN114141851A - Display panel, display screen and electronic equipment

Info

Publication number: CN114141851A
Application number: CN202111448593.4A
Authority: CN
Inventors: 刘长瑜
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-03-04
Anticipated expiration: 2041-11-30
Also published as: CN117750831A; CN114141851B; WO2023098330A1

Abstract

The application discloses a display panel, a display screen and electronic equipment, wherein a display area of the display panel comprises a first area and a second area, and the second area is used for being arranged corresponding to a photosensitive element; the first area is provided with a plurality of first light-emitting pixels distributed in an array manner and a plurality of first pixel driving circuits distributed in an array manner, and the plurality of first pixel driving circuits are connected with the plurality of first light-emitting pixels in a one-to-one correspondence manner so as to drive the first light-emitting pixels to emit light; the second area is provided with a plurality of second light-emitting pixels distributed in an array manner; the first area is also provided with a plurality of second pixel driving circuits which are uniformly distributed in the first area, and the target number of the second pixel driving circuits are connected with the plurality of second light-emitting pixels in a one-to-one correspondence manner so as to drive the second light-emitting pixels to emit light. By enabling the pixel driving circuits in the first area to be uniformly distributed, the uniformity of the display effect of the display panel can be improved.

Description

Display panel, display screen and electronic equipment

Technical Field

The present application relates to the field of display technologies, and more particularly, to a display panel, a display screen, and an electronic device.

Background

With the increasing requirements of users on the screen ratio of electronic devices, the full screen is a main trend of mobile phone terminal development. Wherein, set up photosensitive element such as camera under the screen of display screen is the important technique of realizing the full face screen, through this technique, the display screen not only can show, can also guarantee photosensitive element's effect simultaneously and normally. However, when the photosensitive element is disposed under the screen, the uniformity of the display screen is not good.

Disclosure of Invention

In view of the above problems, the present application provides a display panel, a display screen, and an electronic device.

In a first aspect, an embodiment of the present application provides a display panel, where a display area of the display panel includes a first area and a second area, and the second area is used for being disposed corresponding to a photosensitive element; the first area is provided with a plurality of first light-emitting pixels distributed in an array manner and a plurality of first pixel driving circuits distributed in an array manner, and the plurality of first pixel driving circuits are connected with the plurality of first light-emitting pixels in a one-to-one correspondence manner so as to drive the first light-emitting pixels to emit light; the second area is provided with a plurality of second light-emitting pixels distributed in an array manner; the first area is also provided with a plurality of second pixel driving circuits which are uniformly distributed in the first area, and the target number of the second pixel driving circuits are connected with the plurality of second light-emitting pixels in a one-to-one correspondence manner so as to drive the second light-emitting pixels to emit light.

In a possible embodiment, the first region comprises a first sub-region and a second sub-region, the second sub-region being closer to the second region than the first sub-region; the second pixel driving circuits located in the second sub-area are connected with the second light-emitting pixels in a one-to-one correspondence manner to drive the second light-emitting pixels to emit light.

In one possible embodiment, the second pixel driving circuit located in the first sub-region is not used for driving the first light-emitting pixel or the second light-emitting pixel to emit light.

In one possible implementation, the second sub-region includes a first target sub-region and a second target sub-region located at two sides of the second region in the row direction, and the number of the second pixel driving circuits connected to the second light-emitting pixels located in the first target sub-region is the same as the number of the second pixel driving circuits connected to the second light-emitting pixels located in the second target sub-region; the row direction is parallel to a width direction of the display panel.

In one possible embodiment, the second pixel driving circuit of the first target row in the first target sub-region and the second target sub-region is connected to at least some of the second pixels of the second target row in the at least one second target row in the second region, the first target row is any one row of the first target sub-region and the second target sub-region in the same row, and the second target row in which the second pixels are located is adjacent to the first target row in which the second pixel driving circuit is located.

In one possible implementation, the traces between the second pixel driving circuit and the second light emitting pixel connected thereto in the first target sub-region and the second target sub-region extend along the row direction.

In one possible implementation, the second sub-region includes a third target sub-region and a fourth target sub-region located at two sides of the second region in the column direction, and the number of the second pixel driving circuits connected to the second light-emitting pixels located in the third target sub-region is the same as the number of the second pixel driving circuits connected to the second light-emitting pixels located in the fourth target sub-region; the column direction is parallel to a length direction of the display panel.

In a possible implementation manner, the plurality of second pixel driving circuits are arranged in a plurality of columns, and are uniformly distributed in the first area along a row direction, one column of the second pixel driving circuits is arranged every other N columns of the first pixel driving circuits, the row direction is parallel to the width direction of the display panel, and N is a positive integer.

In one possible implementation, the plurality of second pixel driving circuits are arranged in a plurality of rows, and are uniformly distributed in the first area along a column direction, one row of the second pixel driving circuits is arranged every other N rows of the first pixel driving circuits, the column direction is parallel to the length direction of the display panel, and N is a positive integer.

In a possible implementation mode, the value range of N is 2-8.

In one possible embodiment, the second light-emitting pixel includes a red light-emitting pixel, a green light-emitting pixel, and a blue light-emitting pixel, and adjacent red light-emitting pixels, green light-emitting pixels, and blue light-emitting pixels are combined to form a pixel unit; in each pixel unit distributed in the second area, the distance between the green light-emitting pixel and the second pixel driving circuit connected with the green light-emitting pixel is shorter than that between the red light-emitting pixel and the second pixel driving circuit connected with the red light-emitting pixel.

In one possible embodiment, the second light-emitting pixel includes a red light-emitting pixel, a green light-emitting pixel, and a blue light-emitting pixel, and adjacent red light-emitting pixels, green light-emitting pixels, and blue light-emitting pixels are combined to form a pixel unit; in each pixel unit distributed in the second area, the distance between the green light-emitting pixel and the corresponding second pixel driving circuit is shorter than the distance between the blue light-emitting pixel and the second pixel driving circuit connected with the blue light-emitting pixel.

In one possible embodiment, one of the pixel units includes two green emitting pixels, one red emitting pixel, and one blue emitting pixel.

In one possible embodiment, the distribution density of the first light-emitting pixels in the first region is the same as the distribution density of the second light-emitting pixels in the second region.

In one possible embodiment, the second light-emitting pixel is smaller than the first light-emitting pixel in the same color light-emitting pixel.

In a possible implementation manner, the second pixel driving circuit and the second light emitting pixel are electrically connected through a transparent wire.

In one possible embodiment, the transparent trace includes: indium Tin Oxide (ITO) wiring or Indium Zinc Oxide (IZO) wiring.

In one possible embodiment, the first light-emitting pixels in the first region and the second light-emitting pixels in the second region are arranged in the same arrangement.

In one possible implementation, the display panel further includes a peripheral circuit electrically connected to the first pixel driving circuit and a target number of the second pixel driving circuits connected to the second light emitting pixels; an orthographic projection of the peripheral circuit on a display plane of the display panel at least partially overlaps an orthographic projection of the first light-emitting pixel on the display plane.

In a second aspect, an embodiment of the present application provides a display screen, where the display screen includes a cover plate and the display panel provided in the first aspect.

In a third aspect, an embodiment of the present application provides an electronic device, where the electronic device includes: a housing; the display screen provided by the second aspect is disposed on the housing; and the photosensitive element is arranged in the shell and corresponds to the second area.

According to the scheme provided by the application, the display area of the display panel comprises a first area and a second area, the second area is used for being arranged corresponding to the photosensitive element, a plurality of first light-emitting pixels distributed in an array are arranged in the first area, and a plurality of first pixel driving circuits distributed in the array are arranged in the first area, the plurality of first pixel driving circuits are connected with the plurality of first light-emitting pixels in a one-to-one correspondence mode to drive the first light-emitting pixels to emit light, a plurality of second light-emitting pixels distributed in the array are arranged in the second area, a plurality of second pixel driving circuits are further arranged in the first area, the plurality of second pixel driving circuits are uniformly distributed in the first area, and the target number of second pixel driving circuits are connected with the plurality of second light-emitting pixels in a one-to one manner to drive the second light-emitting pixels to emit light. From this, because every luminous pixel in the second region is driven by single pixel drive circuit one-to-one, and first pixel drive circuit, second pixel drive circuit evenly distributed is in first region, consequently, can make the drive circuit in the first region distribute evenly, the event can be guaranteeing the display effect, avoid showing under the inhomogeneous condition, can also avoid because of the uneven inhomogeneous phenomenon of the screen of breathing out that brings of drive circuit distribution, promote display panel's display effect's homogeneity, and then promote display panel's display effect.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 shows a schematic structural diagram of a screen of an off-screen camera according to an embodiment of the present application.

Fig. 2 shows another schematic structural diagram of a screen of an off-screen camera provided in an embodiment of the present application.

Fig. 3 shows a schematic structural diagram of a display panel provided in an embodiment of the present application.

Fig. 4 is a schematic diagram illustrating an arrangement of a pixel driving circuit and a light-emitting pixel in a display panel according to an embodiment of the present disclosure.

Fig. 5 shows a schematic structural diagram of a first pixel driving circuit provided in an embodiment of the present application.

Fig. 6 shows another schematic structural diagram of a display panel provided in an embodiment of the present application.

Fig. 7 shows a schematic structural diagram of a display panel provided in an embodiment of the present application.

Fig. 8 shows a schematic structural diagram of a display panel provided in an embodiment of the present application.

Fig. 9 shows yet another schematic structural diagram of a display panel provided in an embodiment of the present application.

Fig. 10 is a schematic structural diagram of a display panel provided in an embodiment of the present application.

Fig. 11 shows another arrangement diagram of a pixel driving circuit and a light-emitting pixel in a display panel provided in the embodiment of the present application.

Fig. 12 is a schematic diagram illustrating another arrangement of a pixel driving circuit and a light-emitting pixel in a display panel according to an embodiment of the present disclosure.

Fig. 13 is a schematic diagram illustrating a pixel driving circuit and a light-emitting pixel in a display panel according to an embodiment of the present disclosure.

Fig. 14 shows a schematic layout of a pixel driving circuit and a light-emitting pixel in a display panel provided in an embodiment of the present application.

Fig. 15 is a schematic diagram illustrating an arrangement of light-emitting pixels in a display panel according to an embodiment of the present disclosure.

Fig. 16 is a schematic diagram illustrating another arrangement of light-emitting pixels in a display panel according to an embodiment of the present disclosure.

Fig. 17 is a schematic diagram illustrating a position of a first light-emitting pixel, a pixel driving circuit, and a peripheral circuit in a display panel according to an embodiment of the present disclosure.

Fig. 18 is a schematic diagram illustrating another position of a first light-emitting pixel, a pixel driving circuit, and a peripheral circuit in a display panel according to an embodiment of the present disclosure.

Fig. 19 shows a schematic structural diagram of a display screen provided in an embodiment of the present application.

Fig. 20 shows a schematic structural diagram of an electronic device provided in an embodiment of the present application.

Detailed Description

To facilitate an understanding of the embodiments of the present application, the embodiments of the present application will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. The embodiments of the present application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiments of this application belong. The terminology used herein in the description of the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the description of the embodiments of the present application, it is to be understood that the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on methods or positional relationships shown in the drawings, and are only used for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the embodiments of the present application.

It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first region may be termed a second region, and, similarly, a second region may be termed a first region, without departing from the scope of the present application. The first region and the second region are both regions, but they are not the same region.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the description of the present application, "a number" means at least one, such as one, two, etc., unless specifically limited otherwise.

In order to increase the screen area ratio of a mobile phone and actually realize a Full-screen, attention is paid to a technology of a Full Display with Camera (FDC) in which a photosensitive element such as a Camera is disposed below a screen. In the technology of the camera under the screen, the display screen can be divided into a first display area (a main screen area) and a second display area (an auxiliary screen area), and the second display area is a camera placing area under the screen. The external design scheme of the driving circuit of the auxiliary screen area of the under-screen camera is that the pixel circuit of the auxiliary screen area is arranged at the periphery of the auxiliary screen area, and the driving circuit is connected with the light-emitting device of the auxiliary screen area through transparent wires, for example, Indium Tin Oxide (ITO) wires.

The inventors have studied for a long time and found that, in the technology of an under-screen camera, a drive circuit of a light emitting pixel of a sub-screen area is generally disposed around the sub-screen area, i.e., a transition area. For example, as shown in fig. 1 and 2, the driving circuit of the light-emitting pixel in the sub-screen region is disposed in the transition region. In this way, the driving circuit of the secondary screen area is dense, and the display effect difference between the peripheral area of the secondary screen area and other areas is large because the driving circuit has a certain light reflection effect under the screen; in addition, when the driving circuits of the light-emitting pixels in the sub-screen area are arranged in the transition area, in order to reduce the influence of the light reflection effect, if the number of the driving circuits is reduced, a mode of driving more than one driving is adopted, and the display effect of the sub-screen area is influenced.

In view of the above problems, the inventor provides the display panel, the display screen and the electronic device provided in the embodiment of the present application, so that the driving circuits in the first region can be uniformly distributed, and therefore, under the condition of ensuring the display effect and avoiding non-uniform display, the phenomenon of non-uniform screen leakage caused by non-uniform distribution of the driving circuits can be avoided, the uniformity of the display effect of the display panel is improved, and further the display effect of the display panel is improved. The specific display panel is described in detail in the following embodiments.

The following describes the display panel provided in the embodiments of the present application in detail.

Referring to fig. 3, an embodiment of the present application provides a display panel 10, a display area 100 of the display panel 10 includes a first area 110 and a second area 120, and the second area 120 is configured to correspond to a photosensitive element.

Referring to fig. 4, only a partial region of the first region 110 and the second region 120 is shown in fig. 4, the first region 110 is provided with a plurality of first light-emitting pixels 101 distributed in an array, and a plurality of first pixel driving circuits 131 distributed in an array, the plurality of first pixel driving circuits 131 are connected with the plurality of first light-emitting pixels 101 in a one-to-one correspondence; the first region 110 is further provided with a plurality of second pixel driving circuits 132, and the plurality of second pixel driving circuits 132 are uniformly distributed in the first region 110. The second region 120 is provided with a plurality of second light emitting pixels 102 distributed in an array, and of the plurality of second pixel driving circuits 132 provided in the first region 110, a target number of the second pixel driving circuits 132 are connected to the plurality of second light emitting pixels 102 in a one-to-one correspondence. The first pixel driving circuit 131 is used for driving the first light-emitting pixel 101 to emit light, and the second pixel driving circuit 132 is used for driving the second light-emitting pixel 102 to emit light.

The specific value of the target number is not limited, and the plurality of second light-emitting pixels 102 in the second region 120 correspond to the second pixel driving circuits 132 of the target number one by one, so that each light-emitting pixel in the first region 110 and the second region 120 is connected to one pixel driving circuit, thereby implementing a "one-to-one" pixel circuit and improving the display effect of the display panel 10; in addition, since the plurality of second pixel driving circuits 132 are uniformly distributed in the first region 110, and the first pixel driving circuits 131 correspondingly connected to the first light-emitting pixels 101 in the first region 110 are distributed in the first region 110 in an array, the pixel driving circuits in the first region 110 can be uniformly distributed, and a phenomenon of non-uniform shadow (shadow Mura) caused by non-uniform distribution of the driving circuits under a light reflection effect of the pixel driving circuits can be avoided, so that uniformity of a display effect of the display panel 10 is improved, and non-uniform rendering effect of the first region 110 in the display region 100 of the display panel 10 due to light reflection of the pixel driving circuits when the display panel is turned off can be avoided.

The photosensitive elements correspondingly disposed in the second region 120 may not be limited, for example, a camera is disposed to implement an off-screen camera; for another example, a proximity sensor is provided to realize a proximity detection function, and of course, a photosensitive element specifically provided for the proximity sensor may not be limited. The first light emitting pixels 101 in the first region 110 and the second light emitting pixels 102 in the second region 120 are used for emitting light. The first and second Light Emitting pixels may be micro-LEDs, Organic Light-Emitting diodes (OLEDs), inorganic Light-Emitting diodes, and other Light Emitting elements. In the case where the light emitting pixels are organic light emitting diodes, as one mode, when the display panel 10 is a PMOLED display panel, the light emitting pixels may be passive matrix organic electroluminescent diodes; when the display panel 10 is an AMOLED display panel, the light emitting pixels may be active matrix organic light emitting diodes. Alternatively, the light emitting pixels may include at least a red light emitting pixel, a green light emitting pixel, and a blue light emitting pixel. The red light-emitting pixels are used for emitting red light, the green light-emitting pixels are used for emitting green light, the blue light-emitting pixels are used for emitting blue light, the driving circuits of the light-emitting pixels can be the same, but the light-emitting layer materials of the light-emitting pixels with different colors are different, so that display with different colors is realized, and the display panel 10 can realize full-color display.

For example, if the display panel needs to realize richer colors or a larger color gamut, a larger number of light-emitting pixels, for example, including four different colors, may be provided. In the embodiment of the present application, the first light-emitting pixel 101 and the second light-emitting pixel 102 are exemplified to include light-emitting pixels of three different colors, which can be red (R), green (G), and blue (B), respectively. It is to be understood that the above quantities are for illustrative purposes only and are not intended to limit the scope of the present embodiments.

The organic light emitting diode includes an anode, a light emitting layer, and a cathode, which are sequentially stacked. The light-emitting layer at least comprises a light-emitting material layer, the light-emitting material layer comprises an organic light-emitting material, and the light-emitting material with proper light-emitting wavelength can be set according to display requirements. Further, the light emitting layer may further include at least one of a Hole Injection Layer (HIL), a Hole Transport Layer (HTL), a Hole Blocking Layer (HBL), an Electron Transport Layer (ETL), and an Electron Injection Layer (EIL) to reduce a barrier for carrier injection between adjacent film layers, thereby improving carrier injection efficiency. Alternatively, the cathodes of the organic light emitting diodes may face the same side, and the anodes of the light emitting pixels may face the same side. For example, the anode of the light emitting pixel is directed to the upper side and the cathode of the light emitting pixel is directed to the lower side, thereby laying out the driving circuit.

As a possible implementation manner, since the second region 120 of the display panel 10 of the present embodiment is used to dispose the photosensitive element, there is a high light transmittance requirement for the second region 120, and therefore, the cathode and the anode of the second light-emitting pixel 102 of the second region 120 in the present embodiment may be both made of transparent conductive materials, such as indium tin oxide.

The first pixel driving circuit 131 and the second pixel driving circuit 132 are used as pixel driving circuits for driving the first light-emitting pixel 101 and the second light-emitting pixel 102 to emit light, respectively, and the pixel driving circuit may include a storage capacitor and a plurality of switching elements, and the switching elements may be any type of transistors, such as Bipolar Junction Transistors (BJTs), Field Effect Transistors (FETs), Thin Film Transistors (TFTs), and the like. The field effect Transistor may specifically be a Metal Oxide Semiconductor Field Effect Transistor (MOSFET), such as an N-Metal-Oxide-Semiconductor (NMOS) or a P-Metal-Oxide-Semiconductor (PMOS) Transistor. Alternatively, the driving circuit may be formed by a thin film transistor, for example, the driving circuit may be based on a 7T1C driving architecture, and of course, a specific pixel driving circuit may not be limited.

Alternatively, the first pixel driving circuit 131 is described, and referring to fig. 5, the first pixel driving circuit 131 includes a driving transistor T1, an anode reset unit 1311, a gate reset unit 1312, a data writing unit 1313, a threshold compensation unit 1314, and a light emission control unit 1315.

Specifically, the driving transistor T1 is used to generate a driving current. The gate of the driving transistor T1 is connected to the gate reset unit 1312, the first pole of the driving transistor T1 is used for receiving the Data signal Data, and the second pole of the driving transistor T1 outputs the driving current. The current value of the driving current is determined by the Data signal Data and directly affects the luminance of the first light-emitting pixel.

A control terminal of the anode reset unit 1311 is configured to receive the second scan signal scan (n), an input terminal of the anode reset unit 1311 is configured to receive the reset voltage signal Vinit, and an output terminal of the anode reset unit 1311 is connected to the anode of the first light-emitting pixel.

The anode reset unit 1311 is configured to receive the reset voltage Vinit through the input terminal after the gate of the driving transistor T1 is reset, and pull down the anode of the first light-emitting pixel connected thereto to the reset voltage Vinit to reset the anode of the first light-emitting pixel. Here, the reset voltage Vinit may be understood as an anode initial charging voltage of the first light emitting pixel. By resetting the anode of the first light-emitting pixel, the flow of the driving current of the first light-emitting pixel, which is used for driving the first light-emitting pixel, to the anode of the first light-emitting pixel can be changed to drive the first light-emitting pixel to emit light, and meanwhile, the driving current cannot be influenced, so that the reliability of the light-emitting brightness of the first light-emitting pixel is ensured.

A control terminal of the gate reset unit 1312 is connected to the gate control terminal for receiving the first Scan signal Scan (n-1); an input end of the gate reset unit 1312 is connected to the second reset end, and is configured to receive a reset voltage Vinit; the output terminal of the gate reset unit 1312 is connected to the gate of the driving transistor T1. Specifically, the gate reset unit 1312 may pull down the gate voltage of the driving transistor T1 to the reset voltage Vinit according to the first Scan signal Scan (n-1) received by the control terminal to reset the gate of the driving transistor T1.

The data writing unit 1313 includes a data writing transistor T2, the gate of the data writing transistor T2 is connected to the second scan signal line scan (n), the first pole of the data writing transistor T2 is connected to the data signal line, the second pole of the data writing transistor T2 is connected to the first pole of the driving transistor T1, and the data writing transistor T2 is configured to control the connection and disconnection of a signal transmission path between the second scan signal line and the first pole of the driving transistor T1 according to the second scan signal scan (n). Specifically, taking the Data writing transistor T2 as a P-type transistor as an example, when the second scan signal scan (n) is at a low level, the Data writing transistor T2 is turned on and transmits the Data signal Data to the first electrode of the driving transistor T1; when the second scan signal scan (n) is at a low level, the data write transistor T2 is turned off. It is understood that the data writing unit 1313 is not limited to the data writing transistor T2 of the present embodiment, and may be other circuit configurations that can control signals according to the enable and realize a signal transmission function.

The threshold compensation unit 1314 is respectively connected to the gate and the second pole of the driving transistor T1, and is configured to control the on/off of the signal transmission path between the gate and the second pole of the driving transistor T1 according to the second scan signal scan (n). Specifically, by providing the threshold compensation unit 1314, the threshold voltage of the driving transistor T1 can be compensated, thereby preventing the threshold voltage of the driving transistor T1 from affecting the luminance of the first light-emitting pixel.

The threshold compensation unit 1314 includes a threshold compensation transistor T3 and a storage capacitor C1. The storage capacitor C1 is connected to the second power voltage terminal VDD and the gate of the driving transistor T1, respectively. The gate of the threshold compensation transistor T3 is connected to the first scan signal line, the first pole of the threshold compensation transistor T3 is connected to the second pole of the driving transistor T1, and the second pole of the threshold compensation transistor T3 is connected to the gate of the driving transistor T1. The threshold compensation transistor T3 is used to control the on/off of the signal transmission path between the gate and the second pole of the driving transistor T1 according to the second scan signal scan (n). Specifically, taking the threshold compensation transistor T3 as a P-type transistor as an example, when the second scan signal scan (n) is at a low level, threshold compensation is performed and the storage capacitor C1 is charged, so that the compensation result is stored in the storage capacitor C1.

Alternatively, the threshold compensation transistor T3 may be a double gate transistor. In the present embodiment, the threshold compensation transistor T3 of the double-gate transistor structure is adopted, so that the reliability of threshold compensation can be effectively improved, and the display quality of the display device can be improved. It is understood that other transistors in the first pixel driving circuit 131 may also be dual gate transistors to further improve the display quality.

The light emission control unit 1315 includes a first control transistor T5 and a second control transistor T6. The gate of the first control transistor T5 is configured to receive a light emission control signal, the first pole of the first control transistor T5 is connected to the second power voltage terminal, the second pole of the first control transistor T5 is connected to the first pole of the driving transistor T1, and the first control transistor T5 is configured to control on/off of a signal transmission path between the second power voltage terminal and the first pole of the driving transistor T1 according to the light emission control signal EM. The gate of the second control transistor T6 is for receiving the emission control signal EM, the first pole of the second control transistor T6 is connected to the second pole of the driving transistor T1, the second pole of the second control transistor T6 is connected to the anode of the first light-emitting pixel, and the second control transistor T6 is for controlling the on/off of the signal transmission path between the second pole of the driving transistor T1 and the anode of the first light-emitting pixel according to the emission control signal EM. Illustratively, taking the first and second control transistors T5 and T6 as P-type transistors as an example, when the emission control signal EM is at a low level, the first and second control transistors T5 and T6 are turned on, the voltage of the first electrode of the driving transistor T1 is pulled up to the second power voltage VDD, and the gate-source voltage difference of the first driving transistor T1 is varied to generate and output a driving current to the first light emitting pixel, thereby controlling the first light emitting pixel to emit light.

Note that the transistors in this embodiment are not limited to the P-type transistors in the foregoing embodiments, and may be N-type transistors or the like. The types of the transistors are different, and the corresponding driving modes can be adjusted adaptively. In addition, the first pixel driving circuit of the present embodiment is not limited to the 7T1C driving circuit in the foregoing embodiment, that is, the first pixel driving circuit may have other numbers of transistors, so as to realize a lightweight display device with a smaller number of transistors, or realize a more flexible display function with a larger number of transistors, for example, it may be other types of driving circuits such as 3T1C, 6T1C, 6T2C, and the like.

Optionally, for the first light-emitting pixels 101 of the same color, the length difference of the driving traces between the first light-emitting pixels 101 and the first driving circuit 131 connected to the first light-emitting pixels 101 may be the same, so that it can be ensured that the response speed or the light-emitting brightness and other performances of the first light-emitting pixels 101 of the same color are very similar, that is, the uniformity of display is better, thereby improving the uniformity of display of the display panel 10, and avoiding the phenomenon of uneven information screen caused by uneven distribution of the driving circuits.

In some embodiments, since the plurality of first light emitting pixels 101 are arranged in an array, the array of the plurality of first light emitting pixels 101 may include a plurality of rows and a plurality of columns of the first light emitting pixels 101; similarly, since the plurality of first pixel driving circuits 131 are also arranged in an array, the array of the plurality of first pixel driving circuits 131 may include a plurality of rows and a plurality of columns of the first pixel driving circuits 131. As shown in fig. 4, each column of the first pixel driving circuits 131 may be connected to a column of the first light emitting pixels 101 in the first region 110 in a one-to-one correspondence, that is, the number of the first pixel driving circuits 131 is the same as the number of the first light emitting pixels 101 in a column direction (a direction parallel to a length direction of the display panel 10).

As a possible implementation manner, the first pixel driving circuits 131 in the first area 110 and the first light-emitting pixels 101 in the first area 110 may be distributed in different layers, and each first pixel driving circuit 131 may overlap or be adjacent to the first light-emitting pixel 101 connected thereto, so that the routing length may be reduced.

In some embodiments, as shown in fig. 3, the second region 120 may be circular and located at a middle region of the upper side of the display panel 10. Of course, the specific shape of the second region 120 may not be limited, and the second region 120 may also be rectangular, square, oval, etc.; the position of the second region 120 in the display panel 10 may not be limited, and may be located in a middle region or a bottom region of the display panel 10, for example, to adapt to photosensitive elements with different functions or different sizes. Exemplarily, fig. 5 is another schematic structural diagram of the display panel 10 according to the embodiment of the present application, and in the display panel 10 shown in fig. 6, the first region 110 is in an oval shape and is located at the bottom of the display panel 10.

In one embodiment, referring to fig. 7, the first region 110 includes a first sub-region 111 and a second sub-region 112, the second sub-region 112 is closer to the second region 120 than the first sub-region 111, and the plurality of second pixel driving circuits 132 located in the second sub-region 112 are connected to the plurality of second light emitting pixels 102 in a one-to-one correspondence manner to drive the second light emitting pixels 102 to emit light. That is, the distance between the second sub-region 112 and the second region 120 where the second pixel driving circuit 132 for connecting the second light-emitting pixel 102 is located is smaller than the distance between the first sub-region 111 and the second region 120. It can be understood that, since the second pixel driving circuit 132 connected to the second light-emitting pixel 102 in the second region 120 is located outside the second region 120, the second pixel driving circuit needs to be connected by a wire, and the length of the wire may affect the magnitude of an on-screen resistive capacitive load (RC Loading), so that the time when the second light-emitting pixel 102 starts to be lit is affected, and the display effect of the second region 120 is affected. Therefore, the second pixel driving circuit 132 closer to the second region 120 is connected to the second light emitting pixel 102 in the second region 120, so as to reduce the length of the trace and ensure the display effect of the second region 120.

In some embodiments, the second pixel driving circuit 132 located in the first sub-region 111 is not used for driving the first light emitting pixel 101 or the second light emitting pixel 102 to emit light. It can be understood that, in order to ensure the uniformity of the distribution of the pixel driving circuits in the first region 110, the plurality of second pixel driving circuits 132 are uniformly disposed in the first region 110, and not all of the plurality of second pixel driving circuits 132 are connected to the second light emitting pixels 102. Therefore, the second pixel driving circuits 132 in the first sub-region 111 are not connected to any of the pixels, but are used as dummy pixel driving circuits (dummy pixel driving circuits), so that not only the size and arrangement of the pixel driving circuits can be optimized, but also the uniformity of the distribution of the pixel driving circuits in the first region 110 can be ensured.

In some embodiments, referring to fig. 8, the second sub-region 112 includes a first target sub-region 1121 and a second target sub-region 1122 located at two sides of the second region 120 along the row direction. The number of the second pixel driving circuits 132 connected to the second light-emitting pixels 102 located in the first target sub-region 1121 is the same as the number of the second pixel driving circuits 132 connected to the second light-emitting pixels 102 located in the second target sub-region 1122. Wherein the row direction is parallel to the width direction of the display panel. Of course, the first sub-region 111 further includes other sub-regions than the first target sub-region 1121 and the second target sub-region 1122, except that the second pixel driving circuits 132 in the other sub-regions are not connected to the second light-emitting pixels 102. It can be understood that, since the second region 120 for disposing the photosensitive element is usually located in the middle region, the left region or the right region above the display panel 10, and there is always a certain display region on both the left and right sides of the second region 120, the second pixel driving circuits 132 adjacent to both the left and right sides of the second region 120 can be connected to the second light-emitting pixels 102 in the second region 120, that is, the second pixel driving circuits 132 in the first target sub-region 1121 and the second target sub-region 1122 are connected to the second light-emitting pixels 102 in the second region 120, and the number of the second pixel driving circuits 132 connected to the second light-emitting pixels 102 in the first target sub-region 1121 is the same as the number of the second pixel driving circuits 132 connected to the second light-emitting pixels 102 in the second target sub-region 1122, so that the closer second driving pixel circuits 132 can be selected to be connected to the second light-emitting pixels 102 in the second region 120, further reduce line length, avoid because RC Loading is to the influence of display effect.

In a possible alternative, in the case that the number of the second pixel driving circuits 132 distributed in one of the first target sub-region 1121 and the second target sub-region 1122 is not enough to ensure that the number of the second pixel driving circuits 132 connected to the second light-emitting pixels 102 of the second region 120 in the first target sub-region 1121 and the second target sub-region 1122 is the same, and each second light-emitting pixel 102 in the second region 120 is connected to a different second pixel driving circuit 132, the number of the second pixel driving circuits 132 distributed in the other target sub-region can be increased. For example, the number of the second pixel driving circuits 132 connected to the second light-emitting pixels 102 in the first target sub-region 1121 may be larger than the number of the second pixel driving circuits 132 connected to the second light-emitting pixels 102 in the second target sub-region 1122; for another example, the number of the second pixel driving circuits 132 connected to the second light-emitting pixels 102 in the first target sub-region 1121 may be smaller than the number of the second pixel driving circuits 132 connected to the second light-emitting pixels 102 in the second target sub-region 1122.

In one possible implementation, referring to fig. 4 again, the second pixel driving circuit 132 of the first target row in the first target sub-region and the second target sub-region is connected to at least a part of the second light-emitting pixels 102 in the second target row in the second region 120, the first target row is any one row of the first target sub-region and the second target sub-region in the same row, and the second target row in which the second light-emitting pixels 102 are located is adjacent to the first target row in which the second pixel driving circuit 132 is located. It can be understood that each row of the second light emitting pixels 102 in the second area 120 may be connected to an adjacent row of the second pixel driving circuits 132, so that the trace length may be reduced, and the influence of the RC Loading on the display effect may be reduced.

Optionally, referring to fig. 4 again, the traces between the second pixel driving circuits 132 in the first target sub-region 1121 and the second target sub-region 1122 and the second light-emitting pixels 102 connected thereto extend along the row direction. Therefore, under the condition that each row of second light-emitting pixels 102 in the second region 120 is connected with the adjacent row of second pixel driving circuits 132, the effect of RC Loading on the display effect is reduced and the display uniformity of the display panel 10 is ensured by reducing the length of the wires through transverse wires.

In other embodiments, referring to fig. 9, the second sub-region 112 includes a third target sub-region 1123 and a fourth target sub-region 1124 located at two sides of the second region 120 along the column direction, and the number of the second pixel driving circuits 132 connected to the second light-emitting pixels 102 located in the third target sub-region 1123 is the same as the number of the second pixel driving circuits 132 connected to the second light-emitting pixels 102 located in the fourth target sub-region 1124. Wherein, the column direction is parallel to the length direction of the display panel. Of course, the first sub-region 111 further includes other sub-regions besides the third target sub-region 1123 and the fourth target sub-region 1124, except that the second pixel driving circuits 132 in the other sub-regions are not connected to the second light emitting pixels 102. It can be understood that, since the second region 120 for disposing the photosensitive element is usually located in the middle region, the left region or the right region above the display panel 10, and there is always a certain display region on both sides (i.e. the upper and lower sides) of the second region 120 in the column direction, the second pixel driving circuits 132 adjacent to the second region 120 on both sides in the column direction may be connected to the second light-emitting pixels 102 in the second region 120, that is, the second pixel driving circuits 132 in the third target sub-region 1123 and the fourth target sub-region 1124 are connected to the second light-emitting pixels 102 in the second region 120, and the number of the second pixel driving circuits 132 connected to the second light-emitting pixels 102 in the third target sub-region 1123 is the same as the number of the second pixel driving circuits 132 connected to the second light-emitting pixels 102 in the fourth target sub-region 1124, so that the nearer second driving pixel circuits 132 and the second light-emitting pixels 102 in the second region 120 can be selected 102, further reducing the length of the wire, and avoiding the influence of RC Loading on the display effect.

Similarly, in this embodiment, the second pixel driving circuit 132 in the first target column in the third target sub-region 1123 and the fourth target sub-region 1124 is connected to at least some of the second pixels 102 in the second target column in the second region 120, the first target column is any one column in the same column in the third target sub-region 1123 and the fourth target sub-region 1124, and the second target column in which the second pixels are located is adjacent to the first target column in which the second pixel driving circuit is located, so as to reduce the trace length. In addition, the traces between the second pixel driving circuit 132 and the second light emitting pixel 102 connected thereto in the third target sub-region 1123 and the fourth target sub-region 1124 may also extend in the column direction, so as to further reduce the trace length.

In one possible implementation, referring to fig. 10, the second sub-region 112 may also include the first target sub-region 1121, the second target sub-region 1122, the third target sub-region 1123 and the fourth target sub-region 1124. That is, the second pixel driving circuits 132 connected to the second light emitting pixels 102 in the second sub-region 112 are located in regions on both sides of the second region 120 in the column direction and on both sides in the row direction. Therefore, the second pixel driving circuit 132 around the second region 120 can be fully utilized to be connected with the second light-emitting pixel 102, so that the wiring length is further reduced, and the influence of RC Loading on the display effect is reduced.

Alternatively, the second pixel driving circuit 132 in the first target sub-region 1121 is connected to the second light-emitting pixel 102 in the second region 120 adjacent to the first target sub-region 1121, the second pixel driving circuit 132 in the second target sub-region 1122 is connected to the second light-emitting pixel 102 in the second region 120 adjacent to the second target sub-region 1122, the second pixel driving circuit 132 in the third target sub-region 1123 is connected to the second light-emitting pixel 102 in the second region 120 adjacent to the third target sub-region 1123, and the second pixel driving circuit 132 in the fourth target sub-region 1124 is connected to the second light-emitting pixel 102 in the second region 120 adjacent to the fourth target sub-region 1124. Therefore, when the second pixel driving circuits 132 around the second region 120 are connected to the second light-emitting pixels 102, the surrounding second pixel driving circuits 132 are all connected to the adjacent second light-emitting pixels 1021, so as to reduce the wiring length.

Optionally, the number of the second pixel driving circuits 132 connected to the second light emitting pixels 102 in the second region 120 in the first target sub-region 1121, the second target sub-region 1122, the third target sub-region 1123, and the fourth target sub-region 1124 may be the same, so that the second pixel driving circuits 132 connected to the second light emitting pixels 102 in the second region 120 may be uniformly distributed around the second region 120, thereby ensuring uniformity of the manufacturing process.

In one possible implementation, referring to fig. 11, the plurality of second pixel driving circuits 132 are arranged in a plurality of rows, and are uniformly distributed in the first area 110 along the row direction, and one row of the second pixel driving circuits 132 (4 rows in fig. 10) is disposed every N rows of the first pixel driving circuits 131, and the row direction is parallel to the width direction of the display panel. Wherein N is a positive integer. Therefore, the second pixel driving circuits 132 can be uniformly inserted into the first region 110, so that the pixel driving circuits in the first region 110 are distributed uniformly, and the phenomenon of nonuniform screen touching caused by nonuniform distribution of the pixel driving circuits can be avoided under the conditions of ensuring the display effect and avoiding nonuniform display.

In another possible implementation, please refer to fig. 12, wherein, to simplify the drawing, only a portion of the connections between the second pixel driving circuit 132 and the second light emitting pixel 102 are shown in fig. 12. The plurality of second pixel driving circuits 132 may also be arranged in a plurality of rows, and are uniformly distributed in the first region 110 along the column direction, and one row of second pixel driving circuits 132 (2 rows in fig. 12) is disposed every N rows of first pixel driving circuits 131, and the column direction is parallel to the length direction of the display panel. Wherein N is a positive integer. Therefore, the second pixel driving circuits 132 can be uniformly inserted into the first region 110, so that the pixel driving circuits in the first region 110 are distributed uniformly, and the phenomenon of nonuniform screen touching caused by nonuniform distribution of the pixel driving circuits can be avoided under the conditions of ensuring the display effect and avoiding nonuniform display.

In the two embodiments, the value of N ranges from 2 to 8. Therefore, the distribution density of the second pixel driving circuits 132 in the first area 110 can be ensured to a certain extent, so that when the second pixel driving circuit 132 adjacent to the second area 120 is selected to be connected with the second light-emitting pixel 102 of the second area 120, the second pixel driving circuit 132 close to the second area 120 can be selected to be connected with the second light-emitting pixel 102 of the second area 120, the wiring length is further reduced, the influence of RC loading on the pixel lighting time is reduced, and the problem of uneven display effect when the RC loading is inconsistent due to different positions of the second light-emitting pixels 102 is avoided. For example, referring to fig. 4 again, N may be 3, that is, 1 column of the second pixel driving circuits 132 is inserted into every 3 columns of the first pixel driving circuits 131. For another example, referring to fig. 11, N may be 4, that is, 1 column of the second pixel driving circuits 132 is inserted into every 4 columns of the first pixel driving circuits 131. Of course, the above is merely an example, and is not limited to the example, and a mode may be adopted in which 1 column of the second pixel driving circuits 132 is inserted into every 2 columns of the first

pixel driving circuits

131, 1 column of the second pixel driving circuits 132 is inserted into every 6 columns of the first

pixel driving circuits

131, and 1 column of the second pixel driving circuits 132 is inserted into every 8 columns of the first pixel driving circuits 131.

In the above two embodiments, the outer dimensions of the second pixel driving circuits 132 are the same as the outer dimensions of the first pixel driving circuits 131. Therefore, the structure, size and spacing of the pixel driving circuits in the first region 110 can be consistent, the distribution of the pixel driving circuits is more uniform, and the problem of screen Mura caused by inconsistent circuit wiring density is avoided. Moreover, the consistent structure of the pixel driving circuit is also beneficial to the stability of the process, the electrical property consistency of the thin film transistor is ensured, and the uniformity of display is ensured.

In one possible implementation, referring to fig. 13, the second light-emitting pixel 102 includes a red light-emitting pixel, a green light-emitting pixel, and a blue light-emitting pixel, and the adjacent red light-emitting pixel, green light-emitting pixel, and blue light-emitting pixel are combined to form a pixel unit 1021, so as to present a corresponding pixel color when the display panel 10 is used for displaying content. In each pixel unit 1021 distributed in the second area 120, the distance between the green emitting pixel and the second pixel driving circuit 132 connected thereto is shorter than the distance between the red emitting pixel and the second pixel driving circuit 132 connected thereto. It can be understood that, because the charging duration of the green emitting pixel is longer, in order to ensure that the time (the lighting time) when the green emitting pixel starts to be lit in the same pixel unit 1021 is close, that is, the response speed is close, the length of the trace corresponding to the green emitting pixel in the same pixel unit 1021 is shorter than the length of the trace corresponding to the blue emitting pixel, so that the RC loading generated by the trace corresponding to the green emitting pixel is smaller than the RC loading generated by the trace corresponding to the blue emitting pixel, and the lighting time of the blue emitting pixel is close to that of the green emitting pixel.

In another possible implementation, referring to fig. 14, the second light-emitting pixel 102 includes a red light-emitting pixel, a green light-emitting pixel, and a blue light-emitting pixel, and adjacent red light-emitting pixels, green light-emitting pixels, and blue light-emitting pixels are combined to form a pixel unit 1021, so as to present a corresponding pixel color when the display panel 10 is used for displaying content. In each pixel unit 1021 distributed in the second area 120, the distance between the green emitting pixel and the second pixel driving circuit 132 connected thereto is shorter than the distance between the red emitting pixel and the second pixel driving circuit 132 connected thereto. It can be understood that, because the charging duration of the green emitting pixel is longer, in order to ensure that the time (the lighting time) when the green emitting pixel starts to be lit in the same pixel unit 1021 is close, that is, the response speed is close, the length of the trace corresponding to the green emitting pixel in the same pixel unit 1021 may be shorter than the length of the trace corresponding to the red emitting pixel, so that the RC loading generated by the trace corresponding to the green emitting pixel may be smaller than the RC loading generated by the trace corresponding to the red emitting pixel, and the lighting time of the red emitting pixel is close to that of the green emitting pixel.

In both of the above embodiments, one pixel unit 1021 may optionally include two green emitting pixels, one red emitting pixel, and one blue emitting pixel. It is to be understood that, since the human eye is sensitive to green, and the color restoration process is convenient, a combination of two green emitting pixels, one red emitting pixel and one blue emitting pixel may be used to form one pixel unit 1021.

In the embodiment of the present application, please refer to fig. 4 again, the distribution density of the first light emitting pixels 101 in the first region 110 is the same as the distribution density of the second light emitting pixels 102 in the second region 120. Therefore, the light-emitting pixel distribution density of the second region 120 for arranging the photosensitive elements is the same as that of the first region 110, the resolution of the first region 110 of the display panel 10 is the same as that of the second region 120, and the uniformity of the display effect is ensured.

In some embodiments, referring to fig. 13 and 14 again, for the light-emitting pixels of the same color, the second light-emitting pixel 102 is smaller than the first light-emitting pixel 101. Therefore, the interval between the second light-emitting pixels 102 in the second region 120 is larger than the interval between the first light-emitting pixels 101 in the first region 110, so that the light transmission amount is increased, and the working effect of the photosensitive element arranged below the second region 120 is ensured.

In the embodiment of the present application, the second pixel driving circuit 132 is connected to the second light emitting pixel 102 in the second region 120 through a transparent trace. It can be understood that, since the photosensitive element is disposed below the second region 120, and the routing between the second pixel driving circuit 132 and the second light emitting pixel 102 in the second region 120 passes through the second region 120, the connection between the second pixel driving circuit 132 and the second light emitting pixel 102 in the second region 120 is realized through the transparent routing, so as to ensure the light transmission amount of the second region 120, and further ensure the working effect of the photosensitive element disposed below the second region 120.

In some embodiments, the transparent trace includes: indium Tin Oxide (ITO) wiring or Indium Zinc Oxide (IZO) wiring. It can be understood that the ITO material and the IZO material are both transparent materials, so that the connection between the second pixel driving circuit 132 and the second light emitting pixel 102 in the second region 120 is realized through the ITO trace or the IZO trace, and the light transmission amount of the second region 120 can be ensured. Moreover, the ITO material and the IZO material have low resistance, so that the normal operation of the light-emitting pixel can be ensured. Of course, the specific material of the transparent wire may not be limited, and the transparent wire may also be a wire made of other materials, and only the light transmittance and the low impedance need to be ensured.

In the embodiment of the present application, the first light emitting pixels 101 in the first region 110 and the second light emitting pixels 102 in the second region 120 may be arranged in the same arrangement manner. Therefore, the arrangement of the light emitting pixels in the first region 110 and the second region 120 can be the same, and the uniformity of the display effect of the display panel 10 can be ensured.

In one possible embodiment, the first light-emitting pixels 101 in the first region 110 and the second light-emitting pixels 102 in the second region 120 may be arranged in a Diamond arrangement, which is also called a Diamond arrangement or a Diamond arrangement. Referring to fig. 13 and 14, each pixel unit 1021 in the first area 110 and the second area 120 includes two green emitting pixels, one red emitting pixel and one blue emitting pixel, the two green emitting pixels in each pixel unit 1021 are located in the same row, the red emitting pixel and the blue emitting pixel in each pixel unit 1021 are located in the same row, and the four emitting pixels in each pixel unit 1021 are respectively located in different columns.

In another possible embodiment, the first light emitting pixels 101 in the first region 110 and the second light emitting pixels 102 in the second region 120 may be arranged in an RGB arrangement. Referring to fig. 15, in fig. 15, R represents a red emitting pixel, G represents a green emitting pixel, and B represents a blue emitting pixel, each pixel unit 1021 in the first area 110 and the second area 120 includes a green emitting pixel, a red emitting pixel, and a blue emitting pixel, the green emitting pixel, the red emitting pixel, and the blue emitting pixel in each pixel unit 1021 are located in the same row, and the emitting pixels of different colors are respectively located in different columns.

In yet another possible implementation, the first light emitting pixels 101 in the first region 110 and the second light emitting pixels 102 in the second region 120 may both be in a Pentile pixel arrangement. Referring to fig. 16, in fig. 16, R represents a red emitting pixel, G represents a green emitting pixel, B represents a blue emitting pixel, the physical dimensions of the red emitting pixel and the blue emitting pixel in the Pentile arrangement are larger than the physical dimensions of the green emitting pixel, each pixel unit 1021 includes two green emitting pixels, one red emitting pixel and one blue emitting pixel, and the green emitting pixel, the red emitting pixel and the blue emitting pixel in each pixel unit 1021 are located in the same row; in addition, the green emitting pixels are in the same column, the red emitting pixels and the blue emitting pixels are in the same column, and one green emitting pixel is arranged in every other red emitting pixel in the column where the red emitting pixels and the blue emitting pixels are arranged.

Of course, in the display panel 10 provided in the embodiment of the present application, the arrangement of the first light-emitting pixels 101 in the first region 110 and the second light-emitting pixels 102 in the second region 120 may not be limited, and for example, the arrangement may also be a GGRB arrangement.

In some embodiments, referring to fig. 13 and 14 again, the first light-emitting pixels 101 in the first region 110 may be rectangular, and the second light-emitting pixels 102 in the second region 120 may be circular. Of course, the first light-emitting pixel 101 and the second light-emitting pixel 102 may have the same shape, for example, both of rectangular shapes, both of circular shapes, or the like, and are not limited herein.

In some embodiments, referring to fig. 17, in fig. 17, the first pixel driving circuit 131 and the second pixel driving circuit 132 are collectively referred to as a pixel driving circuit 130, the display panel 10 further includes a peripheral circuit 140, and the peripheral circuit 140 is electrically connected to the first pixel driving circuit 131 and the second pixel driving circuits 132 of a target number connected to the second light emitting pixels 102; the orthographic projection of the peripheral circuit 140 on the display plane 400 of the display panel at least partially overlaps the orthographic projection of the first light emitting pixel 101 on the display plane 400. Among them, the peripheral circuit 140 may be a circuit for supplying a scan control signal and a light emission control signal to the pixel driving circuit, which may be at the edge of the display panel 10. Since the orthographic projection of the peripheral circuit 140 on the display plane 400 of the display panel 10 at least partially overlaps the orthographic projection of the first light-emitting pixel 101 on the display plane 400, the area of the peripheral circuit 140 outside the display area in the display panel 10 can be reduced, thereby preventing the display panel 10 from having a black edge and realizing the display panel 10 with a narrow bezel.

Alternatively, referring to fig. 18, the peripheral circuit 140 may be divided into two parts and located at two sides of the pixel driving circuit 130, and the orthographic projections of the peripheral circuits 140 located at two sides on the display plane 400 and the orthographic projection of the first light-emitting pixel 101 on the display plane 400 are at least partially overlapped, and the overlapping areas may be equal, so that by using the peripheral circuit 400 at the symmetrical position, the symmetry of the frame of the display panel 10 may be effectively improved, and the width of the frame at one side may be prevented from being too large.

The display panel that this application embodiment provided, because every luminous pixel in the second region is driven by single pixel drive circuit one-to-one, and first pixel drive circuit, second pixel drive circuit evenly distributed is in first region, consequently, can make the drive circuit in the first region distribute evenly, so can ensure display effect, avoid showing under the inhomogeneous condition, can also avoid because of the uneven inhomogeneous phenomenon of information screen that brings of drive circuit distribution, promote display panel's display effect's homogeneity, and then promote display panel's display effect.

Referring to fig. 19, the display panel 200 includes a cover plate 210 and the display panel 10 according to the foregoing embodiment. The cover plate 210 may be disposed on a light emitting side of the display panel 10 to protect the display panel 10.

An electronic device 300 is further provided in the embodiment of the present application, and fig. 20 is a schematic structural diagram of the electronic device 300 provided in the embodiment of the present application, where the electronic device 300 includes a housing 310, the display 200 provided in the foregoing embodiment, and a photosensitive element 320. The display screen 200 is disposed on the housing 310 to support and protect the display screen 200 through the housing 310, and the light sensing element 320 is disposed in the housing 310 and corresponds to the second region 120 of the display panel 10 of the display screen 200. The display area 100 of the display panel 200 includes a first area 110 and a second area 120, the ambient light can be incident to the light sensing element 320 through the second area 120, and the second area 120 is connected to the first area 110.

The electronic device 300 may be a mobile phone, a tablet computer, a notebook computer, a personal digital assistant, a television, a multimedia display 200, etc. configured with a photosensitive device under the screen (i.e., under the second region 120), and is not limited to the mobile phone shown in fig. 20.

Alternatively, the light sensing device 320 may be an ambient light sensor, the ambient light sensor may sense the brightness of the electronic device 300, and the electronic device 300 may adjust the light emitting brightness of the display screen 100 according to the brightness of the electronic device 300.

Alternatively, the light sensing device 320 may also be an optical distance sensor, and the optical distance sensor may receive light reflected by the target object, so that the electronic device 300 may determine the distance between the target object and the electronic device 300.

Alternatively, the photosensitive device 320 may also be a camera, in which a plurality of sensors arranged in an array are disposed, and a complete image is formed according to a photosensitive result of each sensor.

Alternatively, the light sensing device 320 may also be an optical fingerprint sensor that can recognize protrusions and depressions on a finger by receiving light reflected from the finger, thereby implementing fingerprint recognition.

In the embodiment shown in fig. 20, the second region 120 is circular and is disposed in the middle region of the electronic device 300. Of course, the specific shape of the second region 120 may not be limited, and the second region 120 may also be rectangular, square, oval, etc.; the position of the second region 320 in the display screen 200 may not be limited, and may be located in a middle region or a bottom region of the display screen 200, for example, to adapt to photosensitive elements 320 with different functions or different sizes.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A display panel is characterized in that a display area of the display panel comprises a first area and a second area, wherein the second area is used for being arranged corresponding to a photosensitive element;

the first area is provided with a plurality of first light-emitting pixels distributed in an array manner and a plurality of first pixel driving circuits distributed in an array manner, and the plurality of first pixel driving circuits are connected with the plurality of first light-emitting pixels in a one-to-one correspondence manner so as to drive the first light-emitting pixels to emit light;

the second area is provided with a plurality of second light-emitting pixels distributed in an array manner;

the first area is also provided with a plurality of second pixel driving circuits which are uniformly distributed in the first area, and the target number of the second pixel driving circuits are connected with the plurality of second light-emitting pixels in a one-to-one correspondence manner so as to drive the second light-emitting pixels to emit light.

2. The display panel according to claim 1, wherein the first region includes a first sub region and a second sub region, the second sub region being closer to the second region than the first sub region;

the second pixel driving circuits located in the second sub-area are connected with the second light-emitting pixels in a one-to-one correspondence manner to drive the second light-emitting pixels to emit light.

3. The display panel according to claim 2, wherein the second pixel driving circuit in the first sub-region is not used for driving the first light-emitting pixel or the second light-emitting pixel to emit light.

4. The display panel according to claim 2, wherein the second sub-region includes a first target sub-region and a second target sub-region located on both sides of the second region in the row direction, and the number of the second pixel driving circuits connected to the second light-emitting pixels located in the first target sub-region is the same as the number of the second pixel driving circuits connected to the second light-emitting pixels located in the second target sub-region;

the row direction is parallel to a width direction of the display panel.

5. The display panel according to claim 4, wherein the second pixel driving circuit of a first target row in the first target sub-region and the second target sub-region is connected to at least some of the second pixels of at least one second target row in the second region, the first target row is located in any one of the first target sub-region and the second target sub-region in the same row, and the second target row in which the second pixels are located is adjacent to the first target row in which the second pixel driving circuit is located.

6. The display panel according to claim 5, wherein the traces between the second pixel driving circuits in the first and second target sub-regions and the second light emitting pixels connected thereto extend along the row direction.

7. The display panel according to claim 2, wherein the second sub-region includes a third target sub-region and a fourth target sub-region located on both sides of the second region in the column direction, and the number of the second pixel driving circuits connected to the second light-emitting pixels located in the third target sub-region is the same as the number of the second pixel driving circuits connected to the second light-emitting pixels located in the fourth target sub-region;

the column direction is parallel to a length direction of the display panel.

8. The display panel according to claim 1, wherein the plurality of second pixel driving circuits are arranged in a plurality of columns, and are uniformly distributed in the first region along a row direction, one column of the second pixel driving circuits is arranged every N columns of the first pixel driving circuits, the row direction is parallel to a width direction of the display panel, and N is a positive integer.

9. The display panel according to claim 1, wherein the plurality of second pixel driving circuits are arranged in a plurality of rows, and are uniformly distributed in the first region along a column direction, wherein one row of the second pixel driving circuits is arranged every other N rows of the first pixel driving circuits, the column direction is parallel to a length direction of the display panel, and N is a positive integer.

10. The display panel according to claim 8 or 9, wherein the value of N ranges from 2 to 8.

11. The display panel according to claim 1, wherein an outer dimension of each of the second pixel driving circuits is the same as an outer dimension of each of the first pixel driving circuits.

12. The display panel according to claim 1, wherein the second light-emitting pixels include a red light-emitting pixel, a green light-emitting pixel, and a blue light-emitting pixel, and adjacent red light-emitting pixels, green light-emitting pixels, and blue light-emitting pixels are combined to form one pixel unit;

in each pixel unit distributed in the second area, the distance between the green light-emitting pixel and the second pixel driving circuit connected with the green light-emitting pixel is shorter than that between the red light-emitting pixel and the second pixel driving circuit connected with the red light-emitting pixel.

13. The display panel according to claim 1, wherein the second light-emitting pixels include a red light-emitting pixel, a green light-emitting pixel, and a blue light-emitting pixel, and adjacent red light-emitting pixels, green light-emitting pixels, and blue light-emitting pixels are combined to form one pixel unit;

in each pixel unit distributed in the second area, the distance between the green light-emitting pixel and the corresponding second pixel driving circuit is shorter than the distance between the blue light-emitting pixel and the second pixel driving circuit connected with the blue light-emitting pixel.

14. A display panel as claimed in claim 12 or 13 wherein one pixel unit comprises two green emitting pixels, one red emitting pixel and one blue emitting pixel.

15. The display panel according to claim 1, wherein a distribution density of the first light-emitting pixels in the first region is the same as a distribution density of the second light-emitting pixels in the second region.

16. The display panel according to claim 16, wherein the second light-emitting pixel is smaller than the outer dimension of the first light-emitting pixel for light-emitting pixels of the same color.

17. The display panel according to claim 1, wherein the second pixel driving circuit is electrically connected to the second light emitting pixel through a transparent trace.

18. The display panel of claim 17, wherein the transparent trace comprises: indium Tin Oxide (ITO) wiring or Indium Zinc Oxide (IZO) wiring.

19. The display panel according to claim 1, wherein the first light-emitting pixels in the first region and the second light-emitting pixels in the second region are arranged in the same arrangement.

20. The display panel of claim 1, further comprising peripheral circuitry electrically connected to the first pixel drive circuitry and a target number of the second pixel drive circuitry connected to the second light emitting pixels;

an orthographic projection of the peripheral circuit on a display plane of the display panel at least partially overlaps an orthographic projection of the first light-emitting pixel on the display plane.

21. A display screen, characterized in that the display screen comprises a cover plate and a display panel according to any one of claims 1-20.

22. An electronic device, comprising:

a housing;

the display screen of claim 21, disposed on the housing;

and the photosensitive element is arranged in the shell and corresponds to the second area.