CN117750831A - Display panel, display screen and electronic equipment - Google Patents

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 panels, displays and electronic devices

Cross-references to related applications

This application claims priority from Chinese application No. 202111448593.4 filed on November 30, 2021, the entire content of which is hereby incorporated by reference for all purposes.

Technical field

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

Background technique

As users have higher and higher requirements for the screen-to-body ratio of electronic devices, full-screen displays are the main trend in the development of mobile phone terminals. Among them, arranging photosensitive elements such as cameras under the display screen is an important technology to achieve a full screen. Through this technology, the display screen can not only display, but also ensure the normal effect of the photosensitive elements. However, when the photosensitive element is disposed under the screen, the uniformity of the display screen will be poor.

Contents of the invention

In view of the above problems, this 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. The display area of the display panel includes a first area and a second area. The second area is configured to correspond to a photosensitive element; the first area is configured to There are a plurality of first light-emitting pixels distributed in an array, and a plurality of first pixel driving circuits distributed in an array. The plurality of first pixel driving circuits are connected to the plurality of first light-emitting pixels in a one-to-one correspondence to drive each of the first pixels. The first light-emitting pixel emits light; the second area is provided with a plurality of second light-emitting pixels distributed in an array; the first area is also provided with a plurality of second pixel driving circuits, and the plurality of second pixel driving circuits are uniformly Distributed in the first area, a target number of second pixel driving circuits are connected to a plurality of second light-emitting pixels in one-to-one correspondence to drive the second light-emitting pixels to emit light.

In a possible implementation, the first area includes a first sub-area and a second sub-area, and the second sub-area is closer to the second area than the first sub-area; The plurality of second pixel driving circuits in the second sub-region are connected to the plurality of second light-emitting pixels in a one-to-one correspondence to drive the second light-emitting pixels to emit light.

In a possible implementation, the second pixel driving circuit located in the first sub-region is not used to drive the first light-emitting pixel or the second light-emitting pixel to emit light.

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

In a possible implementation, the second pixel driving circuit of the first target row in the first target sub-region and the second target sub-region and the second light-emitting circuit of at least one second target row in the second region At least part of the second luminescent pixels in the pixels are connected, the first target row is in any row in the same row of the first target sub-region and the second target sub-region, and the second luminescent pixel where the second luminescent pixel is located is The target row is adjacent to the first target row where the second pixel driving circuit is located.

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

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

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

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

In a possible implementation, the value of N ranges from 2 to 8.

In a possible implementation, the second luminescent pixels include red luminescent pixels, green luminescent pixels and blue luminescent pixels, and adjacent red luminescent pixels, green luminescent pixels and blue luminescent pixels are combined to form a pixel unit; In each pixel unit distributed in the second area, the distance between the green emitting pixel and the second pixel driving circuit connected thereto is shorter than the distance between the red emitting pixel and the second pixel driving circuit connected thereto.

In a possible implementation, the second luminescent pixels include red luminescent pixels, green luminescent pixels and blue luminescent pixels, and adjacent red luminescent pixels, green luminescent pixels and blue luminescent pixels are combined to form a pixel unit; In each of the pixel units distributed in the second area, the distance between the green emitting pixel and its corresponding second pixel driving circuit is compared with the distance between the blue emitting pixel and the second pixel driving circuit connected thereto. Shorter.

In a possible implementation, one pixel unit includes two green emitting pixels, one red emitting pixel and one blue emitting pixel.

In a possible implementation, the distribution density of the first luminescent pixels in the first region is the same as the distribution density of the second luminescent pixels in the second region.

In a possible implementation, for luminescent pixels of the same color, the second luminescent pixel is smaller than the outer size of the first luminescent pixel.

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

In a possible implementation, the transparent wiring includes: indium tin oxide ITO wiring or indium zinc oxide IZO wiring.

In a possible implementation, the first light-emitting pixels in the first area and the second light-emitting pixels in the second area are arranged in the same arrangement.

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

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

In a third aspect, embodiments of the present application provide an electronic device. The electronic device includes: a casing; the display screen provided in the second aspect, the display screen being disposed on the casing; and a photosensitive element. Disposed inside the housing and corresponding to the second area.

In the solution provided by this application, the display area of the display panel includes a first area and a second area. The second area is configured to correspond to the photosensitive element. A plurality of first light-emitting pixels distributed in an array are provided in the first area, and a plurality of first light-emitting pixels are provided in the first area. A plurality of first pixel driving circuits distributed in an array are connected to a plurality of first light-emitting pixels in a one-to-one correspondence to drive each first light-emitting pixel to emit light. A plurality of first pixel driving circuits distributed in an array are provided in the second area. The two light-emitting pixels are also provided with a plurality of second pixel driving circuits in the first area. The plurality of second pixel driving circuits are evenly distributed in the first area. The target number of second pixel driving circuits and the plurality of second light-emitting pixels are one by one. Correspondingly connected to drive the second light-emitting pixel to emit light. Therefore, since each light-emitting pixel in the second area is driven by a single pixel driving circuit in one-to-one correspondence, and the first pixel driving circuit and the second pixel driving circuit are evenly distributed in the first area, it is possible to make the pixels in the first area The driving circuits are evenly distributed, so while ensuring the display effect and avoiding uneven display, it can also avoid the uneven screen image caused by the uneven distribution of the driving circuits, and improve the uniformity of the display effect of the display panel. Thus, the display effect of the display panel is improved.

Description of 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 will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

FIG. 1 shows a schematic structural diagram of the screen of an under-screen camera provided by an embodiment of the present application.

FIG. 2 shows another structural schematic diagram of the screen of the under-screen camera provided by the embodiment of the present application.

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

FIG. 4 shows a schematic diagram of the arrangement of pixel driving circuits and light-emitting pixels in a display panel provided by an embodiment of the present application.

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

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

FIG. 7 shows another structural schematic diagram of a display panel provided by an embodiment of the present application.

FIG. 8 shows yet another structural schematic diagram of a display panel provided by an embodiment of the present application.

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

FIG. 10 shows yet another structural schematic diagram of a display panel provided by an embodiment of the present application.

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

FIG. 12 shows another schematic diagram of the arrangement of pixel driving circuits and light-emitting pixels in the display panel provided by the embodiment of the present application.

FIG. 13 shows another schematic diagram of the arrangement of pixel driving circuits and light-emitting pixels in the display panel provided by the embodiment of the present application.

FIG. 14 shows yet another schematic diagram of the arrangement of pixel driving circuits and light-emitting pixels in a display panel provided by an embodiment of the present application.

FIG. 15 shows a schematic arrangement of light-emitting pixels in a display panel provided by an embodiment of the present application.

FIG. 16 shows another schematic diagram of the arrangement of light-emitting pixels in the display panel provided by the embodiment of the present application.

FIG. 17 shows a schematic position diagram of the first light-emitting pixel, pixel driving circuit and peripheral circuit in the display panel provided by the embodiment of the present application.

FIG. 18 shows another position diagram of the first light-emitting pixel, pixel driving circuit and peripheral circuit in the display panel provided by the embodiment of the present application.

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

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

Detailed ways

In order to facilitate understanding of the embodiments of the present application, the embodiments of the present application will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the embodiments of the present application are shown in the accompanying drawings. However, the embodiments of the present application can be implemented in many different forms and are not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure of the embodiments of the present application will be thorough and comprehensive.

Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by a person skilled in the art to which the embodiments of the present application belong. The terms used herein in the description of the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit 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 should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. is based on the accompanying drawings. The method or positional relationship shown is only to facilitate the description of the embodiments of the present application and simplify the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as Limitations on the embodiments of this application.

It will be understood that the terms "first", "second", etc. used in this application 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 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. The first area and the second area are both areas, but they are not the same area.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited. In the description of this application, "several" means at least one, such as one, two, etc., unless otherwise expressly and specifically limited.

In order to increase the screen-to-body ratio of mobile phones and truly achieve a full screen, the Full Display with Camera (FDC) technology, which places cameras and other photosensitive components below the screen, has attracted much attention. In under-screen camera technology, the display screen can be divided into a first display area (main screen area) and a second display area (secondary screen area). The second display area is the area where the under-screen camera is placed. The external design solution for the drive circuit of the secondary screen area of the under-screen camera is to set the pixel circuit of the secondary screen area on the periphery of the secondary screen area. The drive circuit and the light-emitting device of the secondary screen area are connected through transparent wiring, such as indium tin oxide. (ITO, Indiumtin oxide) wiring.

After long-term research, the inventor found that in under-screen camera technology, the driving circuits of the light-emitting pixels in the secondary screen area are usually arranged around the secondary screen area, that is, in the transition area. For example, as shown in FIGS. 1 and 2 , the driving circuits of the light-emitting pixels in the secondary screen area are arranged in the transition area. In this case, the driving circuits in the secondary screen area will be denser, and since the driving circuits have a certain reflective effect under the screen, the display effect between the surrounding area of the secondary screen area and other areas will be greatly different; in addition, the driving circuit will have a certain reflective effect under the screen. When the driving circuit of the luminescent pixels in the secondary screen area is set in the transition area, in order to reduce the impact of reflection, if the number of drive circuits is reduced and a "one drive for many" approach is adopted, the display effect of the secondary screen area will be affected.

In response to the above problems, the inventor proposed the display panel, display screen and electronic device provided by the embodiment of the present application, which can make the driving circuits in the first area evenly distributed, so it can ensure the display effect and avoid uneven display. It can also avoid uneven screen information caused by uneven distribution of drive circuits, improve the uniformity of the display effect of the display panel, and thereby improve the display effect of the display panel. The specific display panel will be described in detail in subsequent embodiments.

The display panel provided by the embodiment of the present application is introduced in detail below.

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

Please refer to FIG. 4 . FIG. 4 only shows part of the first region 110 and the second region 120 . The first region 110 is provided with a plurality of first light-emitting pixels 101 distributed in an array, and a plurality of first pixels distributed in an array. The driving circuit 131, a 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 area 110 is also provided with a plurality of second pixel driving circuits 132, and the plurality of second pixel driving circuits 132 are evenly spaced. distributed in the first area 110. The second area 120 is provided with a plurality of second light-emitting pixels 102 distributed in an array. Among the plurality of second pixel driving circuits 132 provided in the first area 110, a target number of second pixel driving circuits 132 and a plurality of second pixel driving circuits 132 are arranged in the first area 110. The light-emitting pixels 102 are connected in one-to-one correspondence. The first pixel driving circuit 131 is used to drive the first light-emitting pixel 101 to emit light, and the second pixel driving circuit 132 is used to drive the second light-emitting pixel 102 to emit light.

The specific value of the target number is not limited. The plurality of second light-emitting pixels 102 in the second area 120 correspond to the target number of second pixel driving circuits 132. Therefore, the plurality of second light-emitting pixels 102 in the first area 110 and the second area 120 correspond to each other. Each light-emitting pixel is connected to a pixel driving circuit to realize a "one-drive-one" pixel circuit to improve the display effect of the display panel 10; in addition, since the plurality of second pixel driving circuits 132 are evenly distributed in the first area 110, and The first pixel driving circuit 131 array connected to the first light-emitting pixel 101 in the first area 110 is distributed in the first area 110. Therefore, the pixel driving circuits in the first area 110 can be evenly distributed, and the pixel driving circuit can be avoided. Under the reflection effect of the display panel 10, the uneven distribution of the screen pixels (Mura) caused by the uneven distribution of the driving circuits can be improved, thereby improving the uniformity of the display effect of the display panel 10, and avoiding the problem of pixel driving circuits due to the pixel driving circuit when the screen is turned off. Reflection causes uneven presentation of the first area 110 in the display area 100 of the display panel 10 .

Among them, the photosensitive elements corresponding to the second area 120 may not be limited. For example, a camera may be set to realize an under-screen camera; another example may be a proximity sensor to realize the proximity detection function. Of course, the specific photosensitive elements used for setting may not be limited. The first light-emitting pixels 101 in the first area 110 and the second light-emitting pixels 102 in the second area 120 are used to emit light. The first light-emitting pixel and the second light-emitting pixel may be light-emitting elements such as micro-LED, organic light-emitting diode (OLED), inorganic light-emitting diode, etc. In the case where the light-emitting pixels are organic light-emitting diodes, as a method, when the display panel 10 is a PMOLED display panel, the light-emitting pixels can be passive matrix organic electrically excited light-emitting diodes; when the display panel 10 is an AMOLED display panel, the light-emitting pixels It can be an active matrix organic light emitting diode. Alternatively, the light-emitting pixels may include at least red light-emitting pixels, green light-emitting pixels, and blue light-emitting pixels. The red emitting pixels are used to emit red light, the green emitting pixels are used to emit green light, and the blue emitting pixels are used to emit blue light. The driving circuit of each emitting pixel can be the same, but the emitting layer materials of the emitting pixels of different colors are different, so that Displays of different colors are realized, so that the display panel 10 realizes full-color display.

For example, if the display panel needs to achieve richer colors or a larger color gamut, a larger number of light-emitting pixels may be provided, for example, including four different colors of light-emitting pixels. In the embodiment of the present application, the first light-emitting pixel 101 and the second light-emitting pixel 102 include three different colors of light-emitting pixels as an example. The three colors may be red (R), green (G) and blue respectively. Color (B). It can be understood that the above numbers are only used for illustrative purposes and are not used to limit the protection scope of this embodiment.

An organic light-emitting diode includes an anode, a light-emitting layer and a cathode that are stacked in sequence. Wherein, the luminescent layer at least includes a luminescent material layer, and the luminescent material layer includes an organic luminescent material, and the luminescent material with appropriate luminescent wavelength can be set according to the display requirements. Further, the light-emitting layer may also 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 the potential barrier for carrier injection between adjacent film layers, thereby improving the efficiency of carrier injection. 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 faces the upper side, and the cathode of the light-emitting pixel faces the lower side, so that the driving circuit is laid out.

As a possible implementation manner, since the second area 120 of the display panel 10 of this embodiment is used for disposing photosensitive elements, there is a high light transmittance requirement for the second area 120. Therefore, this implementation In this example, the materials of the cathode and the anode of the second light-emitting pixel 102 in the second region 120 may both be 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. The pixel driving circuit may include a storage capacitor and a plurality of switching elements. The switching elements It can be any type of transistor, for example, a bipolar junction transistor (BJT), a field effect transistor (Field Effect Transistor, FET), or a thin film transistor (ThinFilm Transistor, TFT), etc. The field effect transistor may be a metal oxide semiconductor field effect transistor (Metal Oxide Semiconductor Field Effect Transistor, MOSFET), for example, an N-type metal oxide semiconductor transistor (N-Metal-Oxide-Semiconductor, NMOS) or a P-type metal oxide semiconductor. Pipe (P-Metal-Oxide-Semiconductor, PMOS). Alternatively, the driving circuit may be composed of a thin film transistor, for example, it may be a driving circuit based on the 7T1C driving architecture. Of course, the specific pixel driving circuit may not be limited.

Optionally, the first pixel driving circuit 131 is used for illustration. Please refer 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, and a threshold compensation unit. 1314 and lighting control unit 1315.

Specifically, the drive transistor T1 is used to generate a drive current. Among them, 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 to receive the data signal Data, and the second pole of the driving transistor T1 can output the driving current correspondingly. The current value of the driving current is determined by the data signal Data, and directly affects the luminescence brightness of the first luminescent pixel.

The control end of the anode reset unit 1311 is used to receive the second scan signal Scan(n), the input end of the anode reset unit 1311 is used to receive the reset voltage signal Vinit, and the output end of the anode reset unit 1311 is connected to the anode of the first light-emitting pixel.

The anode reset unit 1311 is used to receive the reset voltage Vinit through the input end after the gate of the driving transistor T1 is reset, and to 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. Perform a reset. The reset voltage Vinit can be understood as the anode initial 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 can be changed so that the driving current used to drive the first light-emitting pixel flows to the anode of the first light-emitting pixel to drive the first light-emitting pixel to emit light. The driving current affects the brightness of the first light-emitting pixel, thereby ensuring the reliability of the light-emitting brightness of the first light-emitting pixel.

The control terminal of the gate reset unit 1312 is connected to the gate control terminal for receiving the first scan signal Scan(n-1); the input terminal of the gate reset unit 1312 is connected to the second reset terminal for receiving the 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 can 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 scanning signal line Scan(n). The first electrode of the data writing transistor T2 is connected to the data signal line. The data writing transistor T2 has a gate connected to the second scanning signal line Scan(n). The second pole of the transistor T2 is connected to the first pole of the driving transistor T1. The data writing transistor T2 is used to control the signal between the second scanning signal line and the first pole of the driving transistor T1 according to the second scanning signal Scan(n). The transmission path is switched on and off. Specifically, taking the data writing transistor T2 as a P-type transistor as an example, when the second scanning signal Scan(n) is low level, the data writing transistor T2 is turned on and transmits the data signal Data to the third terminal of the driving transistor T1. One pole; when the second scan signal Scan(n) is low level, the data writing transistor T2 is turned off. It can be understood that the data writing unit 1313 is not limited to the data writing transistor T2 in this embodiment, and may also be other circuit structures that can control the signal according to the enable signal and implement the signal transmission function.

The threshold compensation unit 1314 is connected to the gate electrode and the second electrode of the driving transistor T1 respectively, and is used to control on and off the signal transmission path between the gate electrode and the second electrode of the driving transistor T1 according to the second scan signal Scan(n). Specifically, by setting 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 brightness 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 supply 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 electrode of the threshold compensation transistor T3 is connected to the second electrode of the driving transistor T1, and the second electrode 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 on and off the signal transmission path between the gate electrode and the second electrode 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 low level, threshold compensation is performed and the storage capacitor C1 is charged, thereby storing the compensation result in the storage capacitor C1 .

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

The light emission control unit 1315 includes a first control transistor T5 and a second control transistor T6. Wherein, the gate of the first control transistor T5 is used to receive the light-emitting control signal, the first pole of the first control transistor T5 is connected to the second power supply voltage terminal, and the second pole of the first control transistor T5 is connected to the first pole of the driving transistor T1. The first control transistor T5 is used to control on and off the 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 used to receive the light-emitting control signal EM. The first electrode of the second control transistor T6 is connected to the second electrode of the driving transistor T1. The second electrode of the second control transistor T6 is the anode of the first light-emitting pixel. connected, the second control transistor T6 is used to control on and off the signal transmission path between the second electrode of the driving transistor T1 and the anode of the first light-emitting pixel according to the light-emitting control signal EM. For example, taking the first control transistor T5 and the second control transistor T6 as both P-type transistors as an example, when the light emission control signal EM is 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 changes to generate a driving current and output the driving current to the first light-emitting pixel, thereby controlling the first light-emitting pixel. Pixels glow.

It should be noted that the various transistors in this embodiment are not limited to the P-type transistors in the aforementioned embodiments, and may also be N-type transistors. Depending on the type of transistor, the corresponding driving method can also be adjusted accordingly. In addition, the first pixel driving circuit of this embodiment is not limited to the 7T1C driving circuit in the previous embodiment. That is, the first pixel driving circuit can also have other numbers of transistors, thereby achieving lightweight design with a smaller number of transistors. display device, or use a larger number of transistors to achieve more flexible display functions. For example, it can still be 3T1C, 6T1C, 6T2C and other types of drive circuits.

Optionally, for the first light-emitting pixels 101 of the same color, the length difference of the driving lines between the first light-emitting pixel 101 and the first driving circuit 131 connected thereto can be the same, thereby ensuring the first light-emitting pixels of the same color. The response speed or luminous brightness of the pixels 101 are very similar, that is, the display uniformity is better, thereby improving the display uniformity of the display panel 10 and avoiding the uneven screen image caused by the 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 composed of the plurality of first light-emitting pixels 101 may include multiple rows and columns of first light-emitting pixels 101; similarly, Since the plurality of first pixel driving circuits 131 are also arranged in an array, the array composed of the plurality of first pixel driving circuits 131 may include multiple rows and columns of first pixel driving circuits 131 . As shown in FIG. 4 , each column of first pixel driving circuits 131 can be connected to a column of first light-emitting pixels 101 in the first area 110 in a one-to-one correspondence, that is, in the column direction (the direction parallel to the length direction of the display panel 10 ), the number of the first pixel driving circuits 131 is the same as the number of the first light-emitting pixels 101.

As a possible implementation manner, the first pixel driving circuit 131 in the first area 110 and the first light-emitting pixel 101 in the first area 110 may be distributed in different layers, and each first pixel driving circuit 131 may be connected thereto. The first light-emitting pixels 101 overlap or are adjacent, thereby reducing the wiring length.

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

In one embodiment, please refer to FIG. 7 , the first area 110 includes a first sub-area 111 and a second sub-area 112 . The second sub-area 112 is closer to the second area 120 than the first sub-area 111 and is located at the The plurality of second pixel driving circuits 132 in the two sub-regions 112 are connected to the plurality of second light-emitting pixels 102 in one-to-one correspondence to drive the second light-emitting pixels 102 to emit light. That is to say, 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 distance. It can be understood that since the second pixel driving circuit 132 connected to the second light-emitting pixel 102 in the second area 120 is outside the second area 120, it needs to be connected through wiring, and the length of the wiring will affect the resistance and capacitance load in the screen. (Resistancecapacitance load in screen, RC Loading) size affects the time when the second light-emitting pixel 102 starts to light up, thereby affecting the display effect of the second area 120. Therefore, the second pixel driving circuit 132 closer to the second area 120 is connected to the second light-emitting pixel 102 in the second area 120, thereby reducing the wiring length and ensuring the display effect of the second area 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 understood that in order to ensure the uniformity of the distribution of pixel driving circuits in the first area 110, the plurality of second pixel driving circuits 132 are evenly arranged in the first area 110, and not all of the plurality of second pixel driving circuits 132 are The second pixel driving circuits 132 are all connected to the second light-emitting pixels 102 . Therefore, the second pixel driving circuit 132 in the first sub-region 111 serves as a dummy pixel driving circuit and is not connected to any light-emitting pixel, thereby not only optimizing the size and arrangement of the pixel driving circuit, but also The uniformity of distribution of pixel driving circuits in the first area 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 on both sides of the second region 120 in 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 located in the second target sub-region 1122 connected to the second light-emitting pixels 102 . The row direction is parallel to the width direction of the display panel. Of course, the first sub-region 111 also includes other sub-regions except 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 can be understood that since the second area 120 for arranging the photosensitive element is usually located in the middle area, the left area or the right area above the display panel 10, there are often certain display areas on the left and right sides of the second area 120. , therefore, the second pixel driving circuit 132 adjacent to the left and right sides of the second area 120 can be connected to the second light-emitting pixel 102 in the second area 120, that is, the above-mentioned first target sub-area 1121 and the second target sub-area 1122 The second pixel driving circuits 132 in the second area 120 are connected to the second light-emitting pixels 102, and the number of the second pixel driving circuits 132 connected to the second light-emitting pixels 102 in the first target sub-area 1121 is the same as the second pixel driving circuit 132 in the second area 120. The number of second pixel driving circuits 132 connected to the second light-emitting pixels 102 in the target sub-region 1122 is the same, so that the closer second driving pixel circuit 132 can be selected to be connected to the second light-emitting pixel 102 in the second region 120 , to further reduce the wiring length and avoid the impact of RC Loading on the display effect.

In a possible alternative, the number of second pixel driving circuits 132 distributed in one of the first target sub-area 1121 and the second target sub-area 1122 is not enough to ensure that the first target sub-area 1121 and The number of second pixel driving circuits 132 connected to the second light-emitting pixels 102 of the second area 120 in the second target sub-area 1122 is the same, and each second light-emitting pixel 102 in the second area 120 is connected to a different second light-emitting pixel 102 . In the case of pixel driving circuits 132, the number of second pixel driving circuits 132 distributed in another 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 greater 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 second pixel driving circuits 132 connected to the second light-emitting pixels 102 in the first target sub-area 1121 may be smaller than the number of second pixel driving circuits 132 connected to the second light-emitting pixels 102 in the second target sub-area 1122. .

In a possible implementation, please refer to FIG. 4 again, the second pixel driving circuit 132 of the first target row in the first target sub-area and the second target sub-area and at least one second target row in the second area 120 At least part of the second luminescent pixels 102 of the second luminescent pixels 102 are connected, the first target row is in any row of the same row in the first target sub-region and the second target sub-region, and the second target row where the second luminescent pixel 102 is located The row is adjacent to the first target row where the second pixel driving circuit 132 is located. It can be understood that each row of second light-emitting pixels 102 in the second area 120 can be connected to an adjacent row of second pixel driving circuits 132, thereby reducing the wiring length and thereby reducing the impact of RC loading on the display effect.

Optionally, please refer to FIG. 4 again, the wiring between the second pixel driving circuit 132 in the first target sub-region 1121 and the second target sub-region 1122 and the second light-emitting pixels 102 connected thereto extends along the row direction. Thus, when each row of second light-emitting pixels 102 in the second region 120 is connected to an adjacent row of second pixel driving circuits 132, the wiring length is reduced by lateral wiring, thereby reducing the influence of RC Loading on the display effect and ensuring the display uniformity of the display panel 10.

In other embodiments, please refer to FIG. 9 , the second sub-region 112 includes a third target sub-region 1123 and a fourth target sub-region 1124 located on both sides of the second region 120 in the column direction. The number of the second pixel driving circuits 132 connected to the second light-emitting pixels 102 in 1123 is the same as the number of the second pixel driving circuits 132 located in the fourth target sub-region 1124 and connected to the second light-emitting pixels 102 . The column direction is parallel to the length direction of the display panel. Of course, the first sub-region 111 also includes other sub-regions except 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 can be understood that since the second area 120 for arranging photosensitive elements is usually located in the middle area, the left area or the right area above the display panel 10, and often both sides of the second area 120 along the column direction (ie, the upper and lower sides) There will be a certain display area on each side). Therefore, the second pixel driving circuit 132 adjacent to both sides of the second area 120 in the column direction can be connected to the second light-emitting pixel 102 in the second area 120, that is, the above-mentioned third The second pixel driving circuit 132 in the three target sub-areas 1123 and the fourth target sub-area 1124 is connected to the second light-emitting pixel 102 in the second area 120, and the third target sub-area 1123 is connected to the second light-emitting pixel 102. The number of the second pixel driving circuits 132 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 closer second driving pixel circuit 132 and the second pixel driving circuit 132 can be selected. The second light-emitting pixels 102 in the second area 120 are connected to further reduce the wiring length and avoid the impact 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 and the second pixel drive circuit 132 in the second target column in the second region 120 At least part of the second light-emitting pixels 102 in the light-emitting pixels 102 are connected, the first target column is in any column in the same column in the third target sub-region 1123 and the fourth target sub-region 1124, and the second target column where the second light-emitting pixel is located It is adjacent to the first target column where the second pixel driving circuit is located to reduce the wiring length. In addition, the wiring between the second pixel driving circuit 132 and the connected second light-emitting pixel 102 in the third target sub-region 1123 and the fourth target sub-region 1124 may also extend along the column direction to further reduce the wiring length.

In a possible implementation, please refer to Figure 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. Area 1124. That is to say, the second pixel driving circuit 132 connected to the second light-emitting pixel 102 in the second sub-region 112 is located on both sides of the second region 120 along the column direction and on both sides along the row direction. Therefore, the second pixel driving circuit 132 around the second area 120 can be fully utilized to connect with the second light-emitting pixel 102, further reducing the wiring length and reducing the impact of RLC Loading on the display effect.

Optionally, the second pixel driving circuit 132 in the first target sub-area 1121 is connected to the second light-emitting pixel 102 in the second area 120 adjacent to the first target sub-area 1121, and the second pixel in the second target sub-area 1122 The driving circuit 132 is connected to the second light-emitting pixel 102 in the second area 120 adjacent to the second target sub-area 1122, and the second pixel driving circuit 132 in the third target sub-area 1123 is connected to the second area 120 adjacent to the third target sub-area. The second light-emitting pixel 102 of 1123 is connected, and the second pixel driving circuit 132 in the fourth target sub-area 1124 is connected to the second light-emitting pixel 102 in the second area 120 adjacent to the fourth target sub-area 1124. Therefore, when the second pixel driving circuits 132 around the second area 120 are used to connect 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 wiring. length.

Optionally, the second pixel driving circuit in the first target sub-area 1121, the second target sub-area 1122, the third target sub-area 1123 and the fourth target sub-area 1124 is connected to the second light-emitting pixel 102 of the second area 120. The number of 132 may be the same. Therefore, the second pixel driving circuits 132 connected to the second light-emitting pixels 102 in the second area 120 may be evenly distributed around the second area 120 to ensure the uniformity of the manufacturing process.

In a possible implementation, please refer to FIG. 11 , a plurality of second pixel driving circuits 132 are arranged in multiple columns, evenly distributed in the first area 110 along the row direction, and a column of first pixel driving circuits 131 is provided every N columns. The row direction of the second pixel driving circuit 132 (four columns apart in FIG. 10 ) is parallel to the width direction of the display panel. Among them, N is a positive integer. Therefore, the second pixel driving circuit 132 can be evenly inserted into the first area 110, so that the distribution of the pixel driving circuits in the first area 110 is relatively uniform, and the display effect can be ensured and display unevenness can be avoided. It can avoid the uneven screen image caused by uneven distribution of pixel drive circuits.

In another possible implementation, please refer to FIG. 12 , where, to simplify the drawing, only part of the connection between the second pixel driving circuit 132 and the second light-emitting pixel 102 is shown in FIG. 12 . The plurality of second pixel driving circuits 132 can also be arranged in multiple rows and evenly distributed in the first area 110 along the column direction. One row of second pixel driving circuits 132 is provided every N rows of first pixel driving circuits 131 (intervals are shown in FIG. 12 2 rows), the column direction is parallel to the length direction of the display panel. Among them, N is a positive integer. Therefore, the second pixel driving circuit 132 can be evenly inserted into the first area 110, so that the distribution of the pixel driving circuits in the first area 110 is relatively uniform, and the display effect can be ensured and display unevenness can be avoided. It can avoid the uneven screen image caused by uneven distribution of pixel drive circuits.

In the above two embodiments, the value of N ranges from 2 to 8. Therefore, the distribution density of the second pixel driving circuit 132 in the first region 110 can be guaranteed to a certain extent, so that the second pixel driving circuit 132 adjacent to the second region 120 and the second light-emitting pixel 102 of the second region 120 are selected. When connecting, the closer second pixel driving circuit 132 can be selected to connect to the second light-emitting pixel 102 in the second area 120, further reducing the wiring length, thereby reducing the impact of RC loading on the pixel lighting time, and avoiding the problem due to the second pixel driving circuit 132. The positions of the two light-emitting pixels 102 are different, and the different wiring lengths cause uneven display effects when RC loading is inconsistent. For example, please refer to FIG. 4 again, N may be 3, that is, every three columns of first pixel driving circuits 131 are inserted into one column of second pixel driving circuits 132. For another example, please refer to FIG. 11 , N may be 4, that is, for every four columns of first pixel driving circuits 131, one column of second pixel driving circuits 132 is inserted. Of course, the above is only an example and is not limited to the example solution. It is also possible to insert one column of second pixel driving circuits 132 for every two columns of first pixel driving circuits 131, and for every six columns of first pixel driving circuits 131, one column of second pixel driving circuits 132 can be inserted. There are two pixel driving circuits 132, in which the first pixel driving circuit 131 is inserted into one column of the second pixel driving circuit 132 for every eight columns.

In the above two embodiments, the outer dimensions of each second pixel driving circuit 132 are the same as the outer dimensions of each first pixel driving circuit 131 . As a result, the structure, size and spacing of the pixel driving circuits in the first region 110 can be made consistent, making their distribution more even, and avoiding the problem of screen Mura caused by inconsistent circuit wiring density. Moreover, the consistent structure of the pixel drive circuit is also beneficial to the stability of the process, ensuring consistent electrical properties of the thin film transistors and ensuring display uniformity.

In a possible implementation, please refer to FIG. 13 , the second luminescent pixel 102 includes a red luminescent pixel, a green luminescent pixel and a blue luminescent pixel, and the adjacent red luminescent pixel, green luminescent pixel and blue luminescent pixel are combined to form One pixel unit 1021 is used to present a corresponding pixel color when the display panel 10 is used to display 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 longer than the distance between the red emitting pixel and the second pixel driving circuit 132 connected thereto. short. It can be understood that since green emitting pixels require a longer charging time, in order to ensure that the moment when the lighting starts (lighting time) in the same pixel unit 1021 is close, that is, the response speed is close, the green emitting pixels in the same pixel unit 1021 can be made to emit light. The length of the trace corresponding to the pixel is shorter than the length of the trace corresponding to the blue emitting pixel, so the RC loading generated by the trace corresponding to the green emitting pixel will be smaller than the RC loading generated by the trace corresponding to the blue emitting pixel, making the blue emitting pixel Close to the lighting time of green emitting pixels.

In another possible implementation, please refer to FIG. 14 , the second luminescent pixel 102 includes a red luminescent pixel, a green luminescent pixel, and a blue luminescent pixel, and adjacent red luminescent pixels, green luminescent pixels, and blue luminescent pixels are combined One pixel unit 1021 is formed to present a corresponding pixel color when the display panel 10 is used to display 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 longer than the distance between the red emitting pixel and the second pixel driving circuit 132 connected thereto. short. It can be understood that since green emitting pixels require a longer charging time, in order to ensure that the moment when the lighting starts (lighting time) in the same pixel unit 1021 is close, that is, the response speed is close, the green emitting pixels in the same pixel unit 1021 can be made to emit light. The length of the trace corresponding to the pixel is shorter than the length of the trace corresponding to the red emitting pixel, so the RC loading generated by the trace corresponding to the green emitting pixel will be smaller than the RC loading generated by the trace corresponding to the red emitting pixel, making the red emitting pixel and the green The lighting time of the luminescent pixel is close.

In the above two implementations, optionally, one pixel unit 1021 may include two green light-emitting pixels, one red light-emitting pixel and one blue light-emitting pixel. It is understandable that since human eyes are more sensitive to green and to facilitate color restoration processing, a combination of two green emitting pixels, one red emitting pixel and one blue emitting pixel can be used to form a pixel unit 1021.

In the embodiment of the present application, please refer to FIG. 4 again. The distribution density of the first luminescent pixels 101 in the first area 110 is the same as the distribution density of the second luminescent pixels 102 in the second area 120 . This ensures that the distribution density of light-emitting pixels in the second area 120 and the first area 110 for disposing the photosensitive elements is the same, ensuring that the resolutions of the first area 110 and the second area 120 of the display panel 10 are the same, thereby ensuring the display effect. uniformity.

In some embodiments, please refer to FIG. 13 and FIG. 14 again. For luminescent pixels of the same color, the second luminescent pixel 102 is smaller than the outer size of the first luminescent pixel 101 . As a result, the distance between the second light-emitting pixels 102 in the second area 120 can be larger than the distance between the first light-emitting pixels 101 in the first area 110, thereby increasing the amount of light transmission and ensuring that they are arranged below the second area 120. The working effect of the photosensitive element.

In this embodiment of the present application, the second pixel driving circuit 132 and the second light-emitting pixel 102 in the second region 120 are connected through transparent wiring. It can be understood that since the lower part of the second area 120 is used to dispose the photosensitive element, and the wiring between the second pixel driving circuit 132 and the second light-emitting pixel 102 in the second area 120 will pass through the second area 120, Therefore, the connection between the second pixel driving circuit 132 and the second light-emitting pixel 102 in the second area 120 is realized through transparent wiring, which can ensure the amount of light transmission in the second area 120 and thereby ensure that it is arranged below the second area 120 The working effect of the photosensitive element.

In some embodiments, the transparent traces include: indium tin oxide ITO traces or indium zinc oxide IZO traces. It can be understood that both ITO materials and IZO materials are transparent materials. Therefore, the connection between the second pixel driving circuit 132 and the second light-emitting pixel 102 in the second area 120 is realized through ITO wiring or IZO wiring, which can ensure that the The amount of light transmitted in the second area 120. Moreover, the resistance of ITO materials and IZO materials is low, so they can ensure the normal operation of the light-emitting pixels. Of course, the specific material of the transparent wiring is not limited, and it can also be made of other materials. It only needs to ensure the light transmittance and low impedance.

In this embodiment of the present application, the first light-emitting pixels 101 in the first area 110 and the second light-emitting pixels 102 in the second area 120 may be arranged in the same arrangement. Therefore, the arrangement of the light-emitting pixels in the first area 110 and the second area 120 can be made the same, ensuring the uniformity of the display effect of the display panel 10 .

In a possible implementation, the first luminescent pixels 101 in the first area 110 and the second luminescent pixels 102 in the second area 120 may both be arranged in a Diamond arrangement. The Diamond arrangement is also called a diamond arrangement or a rhombus arrangement. 13 and 14 , each pixel unit 1021 in the first area 110 and the second area 120 includes two green light-emitting pixels, one red light-emitting pixel and one blue light-emitting pixel. Each pixel unit The two green luminescent pixels in each pixel unit 1021 are located in the same row, the red luminescent pixels and the blue luminescent pixels in each pixel unit 1021 are located in the same row, and the four luminescent pixels in each pixel unit 1021 are located in different columns.

In another possible implementation, the first light-emitting pixels 101 in the first area 110 and the second light-emitting pixels 102 in the second area 120 may both be arranged in an RGB arrangement. Among them, please refer to Figure 15. In Figure 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 There are three light-emitting pixels, one red light-emitting pixel and one blue light-emitting pixel. In each pixel unit 1021, the green light-emitting pixel, the red light-emitting pixel and the blue light-emitting pixel are located in the same row, and the light-emitting pixels of different colors are located in different columns.

In yet another possible implementation, the first light-emitting pixels 101 in the first area 110 and the second light-emitting pixels 102 in the second area 120 may both be arranged in a Pentile pixel arrangement. Please refer to Figure 16. In Figure 16, R represents a red luminescent pixel, G represents a green luminescent pixel, and B represents a blue luminescent pixel. The outer dimensions of the red luminescent pixel and the blue luminescent pixel in the Pentile arrangement are larger than the outer dimensions of the green luminescent pixel. Each pixel unit 1021 includes two green emitting pixels, one red emitting pixel and one blue emitting pixel. The green emitting pixels, red emitting pixels and blue emitting pixels in each pixel unit 1021 are located in the same row; in addition, the green emitting pixels In the same column, the red emitting pixels and the blue emitting pixels are in the same column, and in the same column where the red emitting pixels and the blue emitting pixels are located, every interval of a red emitting pixel is a green emitting pixel.

Of course, in the display panel 10 provided by the embodiment of the present application, the arrangement of the first luminescent pixels 101 in the first area 110 and the second luminescent pixels 102 in the second area 120 is not limited. For example, it may also be GGRB. arrangement, etc.

In some embodiments, please refer to FIG. 13 and FIG. 14 again. The shape of the first light-emitting pixel 101 in the first area 110 may be a rectangle, and the shape of the second light-emitting pixel 102 in the second area 120 may be a circle. Of course, the first light-emitting pixel 101 and the second light-emitting pixel 102 may also have the same shape, for example, both are rectangular, or both are circular, etc., which are not limited here.

In some embodiments, please refer to FIG. 17 . The first pixel driving circuit 131 and the second pixel driving circuit 132 in FIG. 17 are collectively referred to as the pixel driving circuit 130 . The display panel 10 also includes a peripheral circuit 140 . The pixel driving circuit 131 and a target number of second pixel driving circuits 132 connected to the second light-emitting pixels 102 are electrically connected; the orthographic projection of the peripheral circuit 140 on the display plane 400 of the display panel and the first light-emitting pixel 101 on the display plane 400 Orthographic projections on at least partially overlap. The peripheral circuit 140 may be a circuit for providing scanning control signals and light emitting control signals to the pixel driving circuit, and may be located 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 with the orthographic projection of the first light-emitting pixel 101 on the display plane 400 , the peripheral circuit 140 outside the display area of the display panel 10 can be reduced. area, thereby avoiding the phenomenon of black borders on the display panel 10 and realizing a display panel 10 with a narrow frame.

Optionally, please refer to FIG. 18 , the peripheral circuit 140 can be divided into two parts located on both sides of the pixel driving circuit 130 , and the orthographic projection of the peripheral circuit 140 located on both sides on the display plane 400 is consistent with the first light-emitting pixel 101 in the display. The orthographic projections on the plane 400 all overlap at least partially, and the overlapping areas can be equal. Therefore, by using the peripheral circuit 400 in a symmetrical position, the symmetry of the frame of the display panel 10 can be effectively improved and the width of the frame on one side can be prevented from being too large. .

In the display panel provided by the embodiment of the present application, since each light-emitting pixel in the second area is driven by a single pixel driving circuit in one-to-one correspondence, and the first pixel driving circuit and the second pixel driving circuit are evenly distributed in the first area, The driving circuits in the first area can be evenly distributed, so that while ensuring the display effect and avoiding uneven display, it can also avoid the uneven screen image caused by the uneven distribution of the driving circuits, and improve the performance of the display panel. The uniformity of the display effect, thereby improving the display effect of the display panel.

The embodiment of the present application also provides a display screen 200. Please refer to FIG. 19. The display screen 200 includes a cover 210 and the display panel 10 provided in the previous embodiment. The cover 210 can be disposed on the light-emitting side of the display panel 10 to protect the display panel 10 .

The embodiment of the present application also provides an electronic device 300. FIG. 20 is a schematic structural diagram of the electronic device 300 provided by the embodiment of the present application. The electronic device 300 includes a housing 310, the display screen 200 provided in the previous embodiment, and a photosensitive element. 320. The display screen 200 is disposed on the casing 310 to support and protect the display screen 200 through the casing 310. The photosensitive element 320 is disposed in the casing 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. 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 and other devices equipped with a photosensitive device at the bottom of the screen (i.e., below the second area 120), and is not limited to the ones shown in the figure. The mobile phone shown in 20.

Optionally, the photosensitive device 320 can be an ambient light sensor. The ambient light sensor can sense the brightness of the electronic device 300 , and the electronic device 300 can adjust the luminous brightness of the display screen 100 according to the brightness of the electronic device 300 .

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

Optionally, the photosensitive device 320 may also be a camera. The camera is provided with multiple sensors arranged in an array, and a complete image is formed based on the photosensitive result of each sensor.

Optionally, the photosensitive device 320 can also be an optical fingerprint sensor. By receiving light reflected from the finger, the optical fingerprint sensor can identify the protrusions and depressions on the finger, thereby realizing fingerprint recognition.

It should be noted that 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 area 120 is not limited, and the second area 120 can also be a rectangle, a square, an ellipse, etc.; the position of the second area 320 in the display screen 200 is also not limited, for example It is located in the middle area or the bottom area of the display screen 200 to adapt to different functions or different sizes of photosensitive elements 320 .

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: it can still Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent substitutions are made to some of the technical features; however, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions in the embodiments of the present application.

Claims (22)

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.