CN117750831A

CN117750831A - Display panel, display screen and electronic equipment

Info

Publication number: CN117750831A
Application number: CN202311788487.XA
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: 2024-03-22
Also published as: WO2023098330A1; CN114141851B; CN114141851A

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 luminous pixels distributed in an array mode and a plurality of first pixel driving circuits distributed in an array mode, and the plurality of first pixel driving circuits are connected with the plurality of first luminous pixels in a one-to-one correspondence mode so as to drive each first luminous pixel to emit light; the second area is provided with a plurality of second luminous pixels distributed in an array manner; the first area is also provided with a plurality of second pixel driving circuits, the second pixel driving circuits are uniformly distributed in the first area, and the target number of second pixel driving circuits are connected with the second luminous pixels in a one-to-one correspondence mode so as to drive the second luminous pixels to emit light. By making the pixel driving circuits in the first region uniform in distribution, uniformity of the display effect of the display panel can be improved.

Description

Display panel, display screen and electronic equipment

Cross Reference to Related Applications

The present application claims priority from chinese application No. 202111448593.4 filed at 2021, 11, 30, which is incorporated herein by reference in its entirety for all purposes.

Technical Field

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

Background

As the requirements of users on the screen ratio of electronic equipment are higher and higher, the comprehensive screen is a main trend of the development of mobile phone terminals. The camera and other photosensitive elements are arranged below the screen of the display screen, so that the display screen can display, and the effect of the photosensitive elements can be ensured to be normal. However, when the photosensitive element is disposed under the screen, uniformity of the display screen may be poor.

Disclosure of Invention

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

In a first aspect, embodiments of the present application provide a display panel, where a display area of the display panel includes a first area and a second area, where the second area is configured to be disposed corresponding to a photosensitive element; the first area is provided with a plurality of first luminous pixels distributed in an array mode and a plurality of first pixel driving circuits distributed in an array mode, and the plurality of first pixel driving circuits are connected with the plurality of first luminous pixels in a one-to-one correspondence mode so as to drive each first luminous pixel to emit light; the second area is provided with a plurality of second luminous pixels distributed in an array manner; the first area is also provided with a plurality of second pixel driving circuits, the second pixel driving circuits are uniformly distributed in the first area, and the target number of second pixel driving circuits are connected with the second luminous pixels in a one-to-one correspondence mode so as to drive the second luminous pixels to emit light.

In one 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 positioned in the second sub-region are connected with the 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 second pixel driving circuit located in the first sub-region is not used to drive the first or the second light emitting pixel to emit light.

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

In a possible implementation manner, the second pixel driving circuit of the first target line in the first target sub-area and the second target sub-area is connected to at least part of the second light emitting pixels of at least one second target line in the second area, any one line in the same line in the first target sub-area and the second target sub-area is used as the first target line, and the second target line in which the second light emitting pixels are located is adjacent to the first target line in which the second pixel driving circuit is located.

In a possible embodiment, the tracks between the second pixel driving circuits in the first and second target subregions and the second pixels connected thereto extend in the row direction.

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

In one 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, each of N columns of first pixel driving circuits is provided with one column of second pixel driving circuits at intervals, the row direction is parallel to a width direction of the display panel, and N is a positive integer.

In one possible implementation manner, 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 in each first pixel driving circuit of N rows at intervals, the column direction is parallel to the length direction of the display panel, and the N is a positive integer.

In one possible embodiment, the value of N ranges from 2 to 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 one pixel unit; in each pixel unit distributed in the second region, the distance between the green light emitting pixel and the second pixel driving circuit connected thereto is shorter than the distance between the red light emitting pixel and the second pixel driving circuit connected thereto.

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 one pixel unit; in each of the pixel units distributed in the second region, a distance between the green light emitting pixel and the corresponding second pixel driving circuit is shorter than a distance between the blue light emitting pixel and the second pixel driving circuit connected thereto.

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

In a 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, for the same color of light emitting pixels, the second light emitting pixel is smaller than the outer dimension of the first light emitting pixel.

In one possible implementation manner, the second pixel driving circuit is electrically connected with the second light emitting pixel through a transparent wire.

In one possible embodiment, the transparent trace includes: indium tin oxide ITO or indium zinc oxide IZO traces.

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 embodiment, 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; the front projection of the peripheral circuit on the display plane of the display panel at least partially overlaps with the front 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 a display panel provided in the first aspect.

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

According to the scheme, 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 luminous pixels distributed in an array are arranged in the first area, and a plurality of first pixel driving circuits distributed in an array are connected in a one-to-one mode, so that all the first luminous pixels are driven to emit light, a plurality of second luminous pixels distributed in an array are arranged in the second area, a plurality of second pixel driving circuits are further arranged in the first area, the second pixel driving circuits are uniformly distributed in the first area, and a target number of second pixel driving circuits are connected with a plurality of second luminous pixels in a one-to-one mode so that all the second luminous pixels are driven to emit light. Therefore, each light-emitting pixel in the second area is driven by a single pixel driving circuit in a one-to-one correspondence manner, and the first pixel driving circuit and the second pixel driving circuit are uniformly distributed in the first area, so that the driving circuits in the first area are uniformly distributed, the display effect can be ensured, the phenomenon of non-uniform screen-extinguishing 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 the display effect of the display panel is further improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

Fig. 2 shows another schematic structural diagram of a screen of an under-screen camera according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present application.

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

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 according to an embodiment of the present application.

Fig. 7 shows still another schematic structural diagram of a display panel according to an embodiment of the present application.

Fig. 8 shows still another schematic structural diagram of the display panel according to the embodiment of the present application.

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

Fig. 10 shows still another schematic structural diagram of the display panel provided in the embodiment of the present application.

Fig. 11 is a schematic diagram showing another arrangement of pixel driving circuits and light emitting pixels in a display panel according to an embodiment of the present application.

Fig. 12 is a schematic diagram showing still another arrangement of pixel driving circuits and light-emitting pixels in a display panel according to an embodiment of the present application.

Fig. 13 is a schematic diagram showing still another arrangement of pixel driving circuits and light emitting pixels in a display panel according to an embodiment of the present application.

Fig. 14 is a schematic diagram showing still another arrangement of pixel driving circuits and light-emitting pixels in a display panel according to 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 application.

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 showing a position of a first light emitting pixel, a pixel driving circuit, and a peripheral circuit in the display panel according to the embodiment of the present application.

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

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

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

Detailed Description

In order 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 illustrated in the accompanying drawings. However, embodiments of the present application may be embodied in many different forms and are not limited to the embodiments described 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 embodiments of the present application belong. The terminology used herein in the description of the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the application. The term "and/or" as used herein 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 should be understood that the terms "upper," "lower," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on the methods or positional relationships shown in the drawings, merely to facilitate describing the embodiments of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present application.

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

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

In order to improve the screen ratio of a mobile phone and truly realize a full screen, the technology of an under-screen camera (FDC, full Display with Camera) in which photosensitive elements such as a camera are arranged below the screen is attracting attention. In the under-screen camera technology, a display screen may be divided into a first display area (main screen area) and a second display area (sub-screen area), which is an under-screen camera placement area. The external design scheme of the driving circuit of the sub-screen area of the under-screen camera is that the pixel circuit of the sub-screen area is arranged at the periphery of the sub-screen area, and the driving circuit is connected with the light emitting device of the sub-screen area through a transparent wire, for example, an Indium Tin Oxide (ITO) wire.

The inventors have long studied and found that in the technology of an under-screen camera, a driving circuit of a light emitting pixel of a sub-screen region is generally disposed around the sub-screen region, i.e., a transition region. For example, as shown in fig. 1 and 2, the driving circuit of the light-emitting pixels of the sub-panel is disposed in the transition region. In this way, the driving circuit of the auxiliary screen area is relatively dense, and the driving circuit has a certain reflection effect under the screen, so that the display effect difference between the peripheral area of the auxiliary screen area and other areas is relatively large; in addition, the driving circuit of the pixels in the sub-screen area is arranged in the transition area, so that the display effect of the sub-screen area can be influenced if the number of the driving circuits is reduced in order to reduce the influence of the reflection effect.

In view of the above problems, the inventor proposes a display panel, a display screen and an electronic device provided by the embodiments of the present application, which can make the distribution of driving circuits in the first area uniform, so that the display effect can be ensured, and the phenomenon of non-uniformity of the screen due to non-uniform distribution of the driving circuits can be avoided under the condition of avoiding non-uniformity of the display, thereby improving the uniformity of the display effect of the display panel, and further improving the display effect of the display panel. The specific display panel will be described in detail in the following embodiments.

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

Referring to fig. 3, an embodiment of a display panel 10 is provided, 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 be disposed corresponding to a photosensitive element.

Referring to fig. 4, fig. 4 only shows a partial area of the first area 110 and the second area 120, where the first area 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, and the plurality of first pixel driving circuits 131 are connected to 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 among the plurality of second pixel driving circuits 132 provided in the first region 110, a target number of 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 numerical value of the target number is not limited, and the plurality of second light emitting pixels 102 in the second area 120 are in one-to-one correspondence with the second pixel driving circuits 132 of the target number, so that each light emitting pixel in the first area 110 and each light emitting pixel in the second area 120 are connected with one pixel driving circuit, a one-drive pixel circuit is realized, and the display effect of the display panel 10 is improved; in addition, since the plurality of second pixel driving circuits 132 are uniformly distributed in the first area 110, and the array of first pixel driving circuits 131 correspondingly connected to the first light emitting pixels 101 in the first area 110 is distributed in the first area 110, the pixel driving circuits in the first area 110 can be uniformly distributed, and the phenomenon of non-uniform screen-off (screen-off Mura) caused by non-uniform distribution of the driving circuits under the reflective effect of the pixel driving circuits can be avoided, thereby improving the uniformity of the display effect of the display panel 10, and avoiding the non-uniform display effect of the first area 110 in the display area 100 of the display panel 10 due to the reflective effect of the pixel driving circuits during screen-off.

The photosensitive elements disposed in the second area 120 corresponding to the first area may not be limited, for example, a camera may be disposed, so as to implement an under-screen camera; for another example, a proximity sensor is provided to realize a proximity detection function, and of course, a photosensitive element specifically used for the arrangement 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 configured to emit light. The first and second Light Emitting pixels may be micro-LEDs, organic Light-Emitting diodes (OLEDs), inorganic Light Emitting diodes, or the like. In the case where the light emitting pixels are organic light emitting diodes, as one way, when the display panel 10 is a PMOLED display panel, the light emitting pixels may be passive matrix organic light emitting 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 red light emitting pixels, green light emitting pixels, and blue light emitting pixels. 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, and the driving circuits of each light emitting pixel can be the same, but the light emitting layers of the light emitting pixels with different colors are different, so that display with different colors is realized, and full-color display is realized by the display panel 10.

For example, if the display panel needs to achieve a richer color or a larger color gamut, a larger number of pixels may be provided, for example, including four different colors. In the embodiment of the present application, the above-mentioned first light emitting pixel 101 and the second light emitting pixel 102 are described by taking as an example that the light emitting pixels include three different colors, which may be red (R), green (G), and blue (B), respectively. It will be appreciated 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 stacked in this order. 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 potential barrier for carrier injection between adjacent film layers, thereby improving efficiency of carrier injection. Alternatively, the cathodes of the organic light emitting diodes may be facing the same side and the anodes of the light emitting pixels may be facing 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 facilitating layout of the driving circuit.

As a possible implementation manner, since the position of the second region 120 of the display panel 10 in this embodiment is used to provide the photosensitive element, there is a high requirement for light transmittance of the second region 120, and thus, in this embodiment, the materials of the cathode and anode of the second light emitting pixel 102 in the second region 120 may be transparent conductive materials, for example, indium tin oxide.

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

Alternatively, 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, and the first pole of the driving transistor T1 is configured to receive the Data signal Data, and the second pole of the driving transistor T1 can correspondingly output the driving current. The current value of the driving current is determined by the Data signal Data, and directly affects the light emitting brightness of the first light emitting pixel.

The control terminal of the anode reset unit 1311 is configured to receive the second Scan signal Scan (n), the input terminal of the anode reset unit 1311 is configured to receive the reset voltage signal Vinit, and the 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 a reset voltage Vinit via 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, so as to reset the anode of the first light emitting pixel. The reset voltage Vinit is understood as the anode start charging voltage of the first light emitting pixel. By resetting the anode of the first light emitting pixel, the driving current of the first light emitting pixel, which is used for driving the first light emitting pixel, can be changed to flow to the anode of the first light emitting pixel so as 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.

The control end of the gate reset unit 1312 is connected to the gate control end, and is configured to receive 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 the reset voltage Vinit; an output terminal of the gate reset unit 1312 is connected to a 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, where a gate of the data writing transistor T2 is connected to the second Scan signal line Scan (n), a first pole of the data writing transistor T2 is connected to the data signal line, a 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 on/off of a signal transmission path between the second Scan signal line Scan (n) 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 writing transistor T2 is turned off. It is to be 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 structures capable of implementing a signal transmission function according to an enable control signal.

The threshold compensation unit 1314 is connected to the gate and the second pole of the driving transistor T1, and is configured to control on/off of a 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 avoiding the influence of the threshold voltage of the driving transistor T1 on 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 scanning 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 configured to control on/off of a signal transmission path between the gate of the driving transistor T1 and the second pole 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 having the double gate transistor structure is adopted, so that the reliability of threshold compensation can be effectively improved, thereby improving the display quality of the display device. It is understood that other transistors in the first pixel driving circuit 131 may 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 supply 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 supply 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 configured to receive 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 anode of the first light emitting pixel of the second pole of the second control transistor T6 is connected, and the second control transistor T6 is configured to control 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 control transistor T5 and the second control transistor T6 as P-type transistors as an example, when the light emission control signal EM is at a low level, the first control transistor T5 and the second control transistor T6 are turned on, the voltage of the first electrode of the driving transistor T1 is pulled up to the second power supply voltage VDD, the gate-source voltage difference of the first driving transistor T1 is changed to generate a driving current and output the driving current to the first light emitting pixel, thereby controlling the first light emitting pixel to emit light.

The various transistors in the present 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 adaptively adjusted. 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 number of transistors, so that a lightweight display device is realized with a smaller number of transistors, or a more flexible display function is realized with a larger number of transistors, for example, or may be another type of driving circuit such as 3T1C, 6T2C, or the like.

Optionally, for the first light emitting pixels 101 of the same color, the difference in length between the driving wires of the first light emitting pixels 101 and the first driving circuit 131 connected thereto may be the same, so that the response speed or the light emitting brightness and other performances of the first light emitting pixels 101 of the same color may be guaranteed to be very similar, that is, the uniformity of display is better, so that the uniformity of display of the display panel 10 is improved, and the phenomenon of non-uniformity of screen display caused by uneven distribution of the driving circuits is avoided.

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

As a possible implementation manner, the first pixel driving circuits 131 in the first region 110 and the first light emitting pixels 101 in the first region 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 trace 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 be rectangular, square, oval, etc.; the location of the second area 120 in the display panel 10 is not limited, and may be, for example, located in a middle area or a bottom area of the display panel 10 to adapt to photosensitive elements with different functions or different sizes. Fig. 5 is a schematic diagram illustrating another structure 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 area 110 is elliptical 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 a plurality of second pixel driving circuits 132 disposed 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 will be appreciated that since the second pixel driving circuit 132 connected to the second light emitting pixels 102 in the second region 120 is located outside the second region 120, it is required to connect via wires, and the wire length affects the size of the on-screen resistor-capacitor load (Resistance capacitance load in screen, RC Loading), so that the lighting time of the second light emitting pixels 102 is affected, and the display effect of the second region 120 is affected. The second pixel driving circuit 132 closer to the second region 120 is connected to the second light emitting pixels 102 in the second region 120, so as to reduce the wiring length 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 to drive the first light emitting pixel 101 or the second light emitting pixel 102 to emit light. It can be appreciated that, in order to ensure uniformity of 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 circuit 132 in the first sub-region 111 serves as a virtual pixel driving circuit (dummy pixel driving circuit) and is not connected to any one of the light emitting pixels, 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 on both sides of the second region 120 in the row direction. The number of 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 second pixel driving circuits 132 connected to the second light emitting pixels 102 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 circuit 132 in the other sub-regions is not connected to the second light emitting pixel 102. It will be appreciated that, since the second area 120 for disposing the photosensitive element is generally located in the middle area, the left area or the right area above the display panel 10, and there is often a certain display area on both sides of the second area 120, the routing length can be further reduced by connecting the second pixel driving circuits 132 adjacent to the left and right sides of the second area 120 with the second pixels 102 in the second area 120, that is, the second pixel driving circuits 132 in the first target sub-area 1121 and the second target sub-area 1122 are connected with the second pixels 102 in the second area 120, and the number of the second pixel driving circuits 132 connected with the second pixels 102 in the first target sub-area 1121 is the same as the number of the second pixel driving circuits 132 connected with the second pixels 102 in the second target sub-area 1122, so that the influence of RC Loading on the display effect can be further reduced.

In a possible alternative, the number of second pixel driving circuits 132 distributed in one of the first target sub-region 1121 and the second target sub-region 1122 is insufficient to ensure that the number of 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 in case that each second light emitting pixel 102 in the second region 120 is connected to a different second pixel driving circuit 132, the number of second pixel driving circuits 132 distributed in the other target sub-region may be increased. For example, the number of second pixel drive circuits 132 in the first target sub-region 1121 that connect the second light emitting pixels 102 may be greater than the number of second pixel drive circuits 132 in the second target sub-region 1122 that connect the second light emitting pixels 102; for another example, the number of second pixel driving circuits 132 in the first target sub-region 1121 that connect the second light emitting pixels 102 may be less than the number of second pixel driving circuits 132 in the second target sub-region 1122 that connect the second light emitting pixels 102.

In one possible implementation, referring to fig. 4 again, the second pixel driving circuit 132 of the first target line in the first target sub-region and the second target sub-region is connected to at least part of the second pixels 102 in the second pixels 102 of at least one second target line in the second region 120, and any one line in the same line in the first target sub-region and the second target sub-region is located in the second target line adjacent to the first target line in which the second pixel driving circuit 132 is located. It will be appreciated that each row of second pixels 102 in the second region 120 may be connected to an adjacent row of second pixel driving circuits 132, whereby the length of the wiring may be reduced, thereby reducing the effect of RC Loading on the display effect.

Optionally, referring to fig. 4 again, the traces between the second pixels 102 connected thereto by the second pixel driving circuits 132 in the first target sub-region 1121 and the second target sub-region 1122 extend in the row direction. Thus, in the case that each row of the second light emitting pixels 102 in the second area 120 is connected to the adjacent row of the second pixel driving circuits 132, the length of the wiring is reduced by the lateral wiring, so that the influence of RC Loading on the display effect is reduced, and the display uniformity of the display panel 10 is ensured.

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 both sides of the second region 120 in the column direction, and the number of the second pixel driving circuits 132 connected to the second light emitting pixels 102 located at 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 at 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 than the third target sub-region 1123 and the fourth target sub-region 1124, except that the second pixel driving circuit 132 in the other sub-regions is not connected to the second light emitting pixel 102. It will be appreciated that, since the second region 120 for disposing the photosensitive element is generally located in the middle region, the left region or the right region above the display panel 10, and there is often a certain display area on both sides (i.e., upper and lower sides) of the second region 120 in the column direction, by connecting the second pixel driving circuits 132 adjacent to both sides of the second region 120 in the column direction with 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 with the second light emitting pixels 102 in the second region 120, and the number of the second pixel driving circuits 132 connected with 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 with the second light emitting pixels 102 in the fourth target sub-region 1124, the routing length can be further reduced, thereby avoiding the influence of the load on the display RC.

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 part of the second pixels 102 in the second target column in the second region 120, where 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 wirings between the second pixel driving circuits 132 in the third target sub-region 1123 and the fourth target sub-region 1124 and the second light emitting pixels 102 connected thereto may also extend in the column direction to further reduce the wiring length.

In a possible embodiment, 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 in the column direction and on both sides in the row direction of the second region 120. Therefore, the second pixel driving circuit 132 around the second region 120 can be fully utilized to connect with the second light emitting pixels 102, so as to further reduce the wiring length and reduce the influence of RC Loading on the display effect.

Optionally, 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. Thus, 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 can be connected to the adjacent second light emitting pixels 1021, thereby reducing the wiring length.

Optionally, 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, 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 of the second region 120 may be uniformly distributed around the second region 120, and uniformity of the manufacturing process is ensured.

In one possible implementation, referring to fig. 11, the plurality of second pixel driving circuits 132 are arranged in a plurality of rows and uniformly distributed in the first area 110 along the row direction, and each N rows of first pixel driving circuits 131 are arranged with one row of second pixel driving circuits 132 (4 rows in fig. 10) at intervals, and the row direction is parallel to the width direction of the display panel. Wherein N is a positive integer. Accordingly, 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 uniformly distributed, and the phenomenon of non-uniformity of the screen due to non-uniform pixel driving circuit distribution can be avoided while ensuring the display effect and avoiding non-uniformity of the display.

In another possible embodiment, please refer to fig. 12, wherein only a portion of the connection between the second pixel driving circuit 132 and the second light emitting pixel 102 is shown in fig. 12 for simplicity of the drawing. The plurality of second pixel driving circuits 132 may be arranged in a plurality of rows, and are uniformly distributed in the first region 110 along the column direction, and each N rows of the first pixel driving circuits 131 are arranged with one row of the second pixel driving circuits 132 (2 rows in the interval in fig. 12) at intervals, and the column direction is parallel to the length direction of the display panel. Wherein N is a positive integer. Accordingly, 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 uniformly distributed, and the phenomenon of non-uniformity of the screen due to non-uniform pixel driving circuit distribution can be avoided while ensuring the display effect and avoiding non-uniformity of the 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 circuits 132 adjacent to the second area 120 are selected to be connected with the second light emitting pixels 102 of the second area 120, the second pixel driving circuits 132 which are closer to each other can be selected to be connected with the second light emitting pixels 102 of the second area 120, the routing length is further reduced, the influence of RC loading on the brightness time of the pixels is reduced, and the problem that the display effect is uneven when RC loading is inconsistent due to different positions of the second light emitting pixels 102 is avoided. For example, referring again to fig. 4, n may be 3, i.e., 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, i.e., 1 column of the second pixel driving circuits 132 are inserted into every 4 columns of the first pixel driving circuits 131. Of course, the above is merely an example, and not limited to the example, and a manner of inserting 1 column of the second pixel driving circuits 132 into every 2 columns of the first pixel driving circuits 131, inserting 1 column of the second pixel driving circuits 132 into every 6 columns of the first pixel driving circuits 131, and inserting 1 column of the second pixel driving circuits 132 into every 8 columns of the first pixel driving circuits 131 is also possible.

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, the size and the spacing of the pixel driving circuits in the first area 110 can be consistent, the distribution of the pixel driving circuits is more uniform, and the problem of screen-off Mura caused by inconsistent circuit wiring densities is avoided. Moreover, the consistent structure of the pixel driving circuit is also beneficial to the stability of the process, ensures the electrical consistency of the thin film transistors and ensures the uniformity of display.

In one possible embodiment, referring to fig. 13, the second light emitting pixels 102 include red light emitting pixels, green light emitting pixels and blue light emitting pixels, and adjacent red light emitting pixels, green light emitting pixels and blue light emitting pixels are combined to form a pixel unit 1021 to display the corresponding pixel color when the display panel 10 is used for displaying content. In each pixel unit 1021 distributed in the second region 120, the distance between the green light emitting pixel and the second pixel driving circuit 132 connected thereto is shorter than the distance between the red light emitting pixel and the second pixel driving circuit 132 connected thereto. As can be appreciated, since the charging time period required for the green light emitting pixel is longer, in order to ensure that the starting time (lighting time) of the same pixel unit 1021 is close, that is, the response speed is close, the routing length corresponding to the green light emitting pixel in the same pixel unit 1021 is shorter than the routing length corresponding to the blue light emitting pixel, so that the RC loading generated by the routing corresponding to the green light emitting pixel is smaller than the RC loading generated by the routing corresponding to the blue light emitting pixel, and the lighting time of the blue light emitting pixel and the green light emitting pixel is close.

In another possible embodiment, referring to fig. 14, the second light emitting pixels 102 include red light emitting pixels, green light emitting pixels and blue light emitting pixels, and adjacent red light emitting pixels, green light emitting pixels and blue light emitting pixels are combined to form a pixel unit 1021 to display the corresponding pixel color when the display panel 10 is used for displaying content. In each pixel unit 1021 distributed in the second region 120, the distance between the green light emitting pixel and the second pixel driving circuit 132 connected thereto is shorter than the distance between the red light emitting pixel and the second pixel driving circuit 132 connected thereto. As can be appreciated, since the charging time period required for the green light emitting pixel is longer, in order to ensure that the starting time (lighting time) of the same pixel unit 1021 is close, that is, the response speed is close, the routing length corresponding to the green light emitting pixel in the same pixel unit 1021 is shorter than the routing length corresponding to the red light emitting pixel, so that the RC loading generated by the routing corresponding to the green light emitting pixel is smaller than the RC loading generated by the routing corresponding to the red light emitting pixel, and the lighting time of the red light emitting pixel and the green light emitting pixel is close.

In the above two embodiments, alternatively, one pixel unit 1021 may include two green light emitting pixels, one red light emitting pixel, and one blue light emitting pixel. It will be appreciated that, since the human eye is more sensitive to green, and the color reduction process is performed for convenience, a combination of two green light emitting pixels, one red light emitting pixel and one blue light emitting pixel may be used to form one pixel unit 1021.

In the embodiment of the present application, referring 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. Thereby, it is possible to ensure that the distribution density of the light emitting pixels of the second region 120 for setting the light sensing element is the same as that of the first region 110, and the resolution of the first region 110 and the second region 120 of the display panel 10 is the same, thereby ensuring uniformity of the display effect.

In some embodiments, referring to fig. 13 and 14 again, for the same color pixels, the second pixels 102 are smaller than the first pixels 101. Therefore, the interval between the second light emitting pixels 102 in the second area 120 is larger than the interval between the first light emitting pixels 101 in the first area 110, so as to increase the light transmission amount, thereby ensuring the working effect of the photosensitive element arranged below the second area 120.

In the embodiment of the present application, the second pixel driving circuit 132 is connected to the second light emitting pixels 102 in the second area 120 through transparent wires. It can be appreciated that, since the light sensing element is disposed below the second area 120, and the wiring between the second pixel driving circuit 132 and the second light emitting pixels 102 in the second area 120 passes through the second area 120, the connection between the second pixel driving circuit 132 and the second light emitting pixels 102 in the second area 120 is realized through the transparent wiring, so that the light transmission of the second area 120 can be ensured, and the working effect of the light sensing element disposed below the second area 120 can be ensured.

In some embodiments, the transparent trace includes: indium tin oxide ITO or indium zinc oxide IZO traces. 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 pixels 102 in the second region 120 is realized through the ITO trace or the IZO trace, so that the light transmission amount of the second region 120 can be ensured. In addition, the ITO material and the IZO material have lower impedance, so that the normal operation of the luminous pixel can be ensured. Of course, the specific material of the transparent wire may not be limited, and may be other wires, which only needs to ensure light transmittance and low impedance.

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. Thereby, the arrangement of the light emitting pixels in the first region 110 and the second region 120 can be made identical, and 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 each have a Diamond arrangement, which is also called Diamond arrangement or 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 pixels, one red pixel and one blue pixel, the two green pixels in each pixel unit 1021 are located in the same row, the red pixels and the blue pixels in each pixel unit 1021 are located in the same row, and the four pixels in each pixel unit 1021 are 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 all arranged in an RGB arrangement. Referring to fig. 15, in fig. 15, R represents a red light emitting pixel, G represents a green light emitting pixel, B represents a blue light emitting pixel, each of the pixel units 1021 in the first region 110 and the second region 120 includes a green light emitting pixel, a red light emitting pixel, and a blue light emitting pixel, the green light emitting pixel, the red light emitting pixel, and the blue light emitting pixel in each of the pixel units 1021 are located in the same row, and the light emitting pixels in different colors are located in different columns, respectively.

In yet 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 each be arranged in a Pentile pixel arrangement. Referring to fig. 16, in fig. 16, R represents a red light emitting pixel, G represents a green light emitting pixel, B represents a blue light emitting pixel, and the overall dimensions of the red light emitting pixel and the blue light emitting pixel in the Pentile arrangement are larger than those of the green light emitting pixel, each pixel unit 1021 includes two green light emitting pixels, one red light emitting pixel and one blue light emitting pixel, and the green light emitting pixel, the red light emitting pixel and the blue light emitting pixel in each pixel unit 1021 are located in the same row; in addition, the green light emitting pixels are in the same column, the red light emitting pixels and the blue light emitting pixels are in the same column, and in one column where the red light emitting pixels and the blue light emitting pixels are located, each red light emitting pixel is a green light emitting pixel at intervals.

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

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

In some embodiments, referring to fig. 17, the first pixel driving circuit 131 and the second pixel driving circuit 132 in fig. 17 are collectively referred to as a pixel driving circuit 130, and the display panel 10 further includes a peripheral circuit 140, where the peripheral circuit 140 is electrically connected to the first pixel driving circuit 131 and a target number of second pixel driving circuits 132 connected to the second light emitting pixels 102; the front projection of the peripheral circuit 140 onto the display plane 400 of the display panel at least partially overlaps with the front projection of the first luminescent pixel 101 onto the display plane 400. 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, and may be at an edge of the display panel 10. Since the front projection of the peripheral circuit 140 on the display plane 400 of the display panel 10 at least partially overlaps the front projection of the first light emitting pixel 101 on the display plane 400, the area of the peripheral circuit 140 outside the display area of the display panel 10 can be reduced, thereby avoiding the black border phenomenon of the display panel 10 and realizing a display panel 10 with a narrow frame.

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 front projection of the peripheral circuit 140 located at two sides on the display plane 400 and the front 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 adopting the peripheral circuit 400 with symmetrical positions, the symmetry of the frame of the display panel 10 may be effectively improved, and the width of the frame at one side is prevented from being excessively large.

According to the display panel provided by the embodiment of the application, as each light-emitting pixel in the second area is driven by the single pixel driving circuit in a one-to-one correspondence manner, and the first pixel driving circuit and the second pixel driving circuit are uniformly distributed in the first area, the driving circuits in the first area can be uniformly distributed, so that the display effect can be ensured, the phenomenon of non-uniform screen-extinguishing caused by non-uniform distribution of the driving circuits can be avoided under the condition of non-uniform display, the uniformity of the display effect of the display panel is improved, and the display effect of the display panel is further improved.

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

The embodiment of the application further provides an electronic device 300, and fig. 20 is a schematic structural diagram of the electronic device 300 provided in the embodiment of the application, where the electronic device 300 includes a housing 310, a display screen 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 photosensitive element 320 is disposed in the housing 310 and is disposed corresponding to the second area 120 of the display panel 10 of the display screen 200. The display area 100 of the display screen 200 includes a first area 110 and a second area 120, and ambient light can be incident on the photosensitive 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 screen 200, or the like, which is configured with a photosensitive device below the screen (i.e., the issue of the second area 120), which 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 100 according to the brightness of the electronic device 300.

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

Alternatively, the photosensitive device 320 may be an optical fingerprint sensor, which can recognize protrusions and depressions on the finger by receiving light reflected from the finger, thereby realizing fingerprint recognition.

In the embodiment shown in fig. 20, the second area 120 is circular and is disposed in the middle area 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 be rectangular, square, oval, etc.; the location of the second area 320 in the display screen 200 is not limited, and may be, for example, located in a middle area or a bottom area of the display screen 200 to adapt to the photosensitive elements 320 with different functions or different sizes.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, one of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not drive the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A display panel, wherein a display area of the display panel includes a first area and a second area, the second area being configured to correspond to a photosensitive element;

the first area is provided with a plurality of first light-emitting pixels and a plurality of first pixel driving circuits, and the plurality of first pixel driving circuits are used for driving the plurality of first light-emitting pixels to emit light;

the second area is provided with a plurality of second luminous pixels;

the first area is also provided with a plurality of second pixel driving circuits, the second pixel driving circuits are uniformly distributed in the first area, part of the second pixel driving circuits are used for driving the second luminous pixels to emit light, and the other part of the second pixel driving circuits are not used for driving the first luminous pixels or the second luminous pixels to emit light;

The part of the second pixel circuits for driving the second light emitting pixels are distributed on two opposite sides of the second region;

the second light-emitting pixels and the first light-emitting pixels are distributed in a diamond arrangement mode.

2. The display panel according to claim 1, wherein the first region includes a first sub-region located on both sides of the second region in a row direction and a second sub-region located on both sides of the second region in a row direction, the second sub-region being closer to the second region than the first sub-region in a row direction, or,

the first region includes a first sub-region located on both sides of the second region in a column direction and a second sub-region located on both sides of the second region in the column direction, the second sub-region being closer to the second region than the first sub-region in the column direction;

a plurality of second pixel driving circuits located in the second sub-region are used for driving a plurality of second light-emitting pixels to emit light;

the row direction is parallel to the width direction of the display panel, and the column direction is parallel to the length direction of the display panel.

3. The display panel of claim 2, wherein the second pixel driving circuit in the first sub-region is not used to drive the first or second light emitting pixels 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 on both sides of the second region in a row direction, and the number of second pixel driving circuits connected to the second light emitting pixels in the first target sub-region is the same as the number of second pixel driving circuits connected to the second light emitting pixels in the second target sub-region.

5. The display panel of claim 4, wherein a 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 a portion of second light emitting pixels in a second light emitting pixel of at least one second target row in the second region, wherein the first target row is any one row in the same row in the first target sub-region and the second target sub-region, and the second target row in which the second light emitting 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 wirings between the second pixel driving circuits in the first and second target subregions and the second light emitting pixels connected thereto extend in 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 on both sides of the second region in a column direction, and the number of second pixel driving circuits connected to the second light emitting pixels in the third target sub-region is the same as the number of second pixel driving circuits connected to the second light emitting pixels in the fourth target sub-region.

8. The display panel according to claim 1, wherein a plurality of the second pixel driving circuits are arranged in a plurality of columns, uniformly distributed in the first region in a row direction, one column of the second pixel driving circuits is provided for every interval of 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 uniformly distributed in the first region in a column direction, the first pixel driving circuits are arranged in one row at each interval of N rows, 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 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 one pixel unit;

in each pixel unit distributed in the second region, the distance between the green light emitting pixel and the second pixel driving circuit connected thereto is shorter than the distance between the red light emitting pixel and the second pixel driving circuit connected thereto.

13. The display panel according to claim 1, wherein 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 one pixel unit;

in each of the pixel units distributed in the second region, a distance between the green light emitting pixel and the corresponding second pixel driving circuit is shorter than a distance between the blue light emitting pixel and the second pixel driving circuit connected thereto.

14. A display panel according to claim 12 or 13, wherein one of the pixel units comprises two green light emitting pixels, one red light emitting pixel and one blue light emitting pixel.

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

16. The display panel of claim 1, wherein for pixels of the same color, the second pixel is smaller than the first pixel in overall size; and/or the number of the groups of groups,

the shape of the first light emitting pixel is different from the shape of the second light emitting pixel.

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

18. The display panel of claim 17, wherein the transparent trace comprises: indium tin oxide ITO or indium zinc oxide IZO traces.

19. The display panel of 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 a peripheral circuit electrically connected to the first pixel driving circuit and the portion of the second pixel driving circuit connected to the second light emitting pixel;

the front projection of the peripheral circuit on the display plane of the display panel at least partially overlaps with the front projection of the first light emitting pixel on the display plane.

21. A display screen comprising a cover plate and a display panel as claimed in any one of claims 1 to 20.

22. An electronic device, comprising:

a housing;

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

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