WO2023098330A1 - Display panel, display screen, and electronic device - Google Patents

Abstract

Disclosed in the present application are a display panel, a display screen, and an electronic device. A display area of the display panel comprises a first area and a second area, the second area being configured to be arranged corresponding to a photosensitive element; the first area is provided with 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 being connected to the plurality of first light-emitting pixels in one-to-one correspondence, so as to drive the first light-emitting pixels to emit light; the second area is provided with a plurality of second light-emitting pixels distributed in an array; the first area is further provided with a plurality of second pixel driving circuits, the plurality of second pixel driving circuits being evenly distributed in the first area, and a target number of the second pixel driving circuits being connected to the plurality of second light-emitting pixels in one-to-one correspondence, so as to drive the second light-emitting pixels to emit light. The display effect uniformity of the display panel can be improved by the consistent distribution of the pixel driving circuits in the first area.

Description

Display panels, displays and electronic devices

Cross References to Related Applications

This application claims priority to Chinese application No. 202111448593.4 filed on November 30, 2021, which is hereby incorporated by reference in its entirety 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 electronic equipment.

Background technique

As users have higher and higher requirements for the screen-to-body ratio of electronic devices, full screens are the main trend in the development of mobile terminals. Among them, setting the camera and other photosensitive elements under the screen of the display screen is an important technology to realize the 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 arranged under the screen, the uniformity of the display screen will be poor.

Contents of the invention

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

In the first aspect, the embodiment of the present application provides a display panel, the display area of the display panel includes a first area and a second area, and the second area is configured to correspond to the photosensitive element; the first area is set 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, and 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 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 drive circuits, and the plurality of second pixel drive circuits are uniform Distributed in the first area, a target number of the second pixel driving circuits are connected to a plurality of the second light-emitting pixels in one-to-one correspondence, so as to drive the second light-emitting pixels to emit light.

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

In a possible implementation manner, 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 light-emitting 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 target row where the second light-emitting pixel is located The target row is adjacent to the first target row where the second pixel driving circuit is located.

In a possible implementation manner, 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 manner, the second subregion includes a third target subregion and a fourth target subregion located on both sides of the second region along the column direction, and 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 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 manner, a plurality of the second pixel driving circuits are arranged in multiple columns, uniformly distributed in the first region along the row direction, and a column of the second pixel driving circuits is provided for every N columns of first pixel driving circuits. A pixel driving circuit, the row direction is parallel to the width direction of the display panel, and the N is a positive integer.

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

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

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

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

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

In a possible implementation manner, 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 a possible implementation manner, for light-emitting pixels of the same color, the second light-emitting pixel has an outer dimension smaller than that of the first light-emitting pixel.

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

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

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

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

In a third aspect, an embodiment of the present application provides an electronic device, the electronic device includes: a casing; the display screen provided in the second aspect above, the display screen is arranged on the casing; a photosensitive element, the photosensitive element It is arranged in the housing and corresponding to the second area.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need 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 any creative effort.

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

FIG. 2 shows another schematic structural diagram of the screen of the under-display 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 an arrangement of a pixel driving circuit 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 schematic structural diagram of the display panel provided by the embodiment of the present application.

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

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

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

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

FIG. 11 is a schematic diagram showing another arrangement of pixel driving circuits and light-emitting pixels in the display panel provided by the embodiment of the present application.

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

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

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

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

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

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

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

FIG. 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 following will describe the embodiments of the present application more comprehensively with reference to related drawings. A preferred embodiment of the embodiments of the application is given 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. On the contrary, the purpose of providing these embodiments is to make the disclosure of the embodiments of the present application more thorough and comprehensive.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the embodiments of this application. 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" and "outer" are based on the drawings The method or positional relationship shown is only for the convenience of describing the embodiment of the present application and simplifying the description, and does not indicate or imply that the referred device or element 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 can be understood that the terms "first", "second" and the like used in this application may be used to describe various elements herein, 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 could be termed a second region, and, similarly, a second region could be termed a first region, without departing from the scope of the present application. Both the first area and the second area are areas, but they are not the same area.

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

In order to increase the screen-to-body ratio of mobile phones and truly realize a full screen, the FDC (Full Display with Camera) technology, which arranges photosensitive elements such as cameras at the bottom of the screen, has attracted much attention. In the 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), and the second display area is the area where the under-screen camera is placed. The external design of the drive circuit in the sub-screen area of the under-screen camera is to set the pixel circuit in the sub-screen area on the periphery of the sub-screen area, and the drive circuit is connected to the light-emitting device in the sub-screen area through transparent wiring, for example, indium tin oxide (ITO, Indium tin oxide) routing.

After a long period of research, the inventor found that in the technology of the under-screen camera, the driving circuit of the light-emitting pixels in the sub-screen area is usually arranged around the sub-screen area, that is, the transition area. For example, as shown in FIG. 1 and FIG. 2 , the driving circuits of the light-emitting pixels in the sub-screen area are arranged in the transition area. In this case, the driving circuit in the sub-screen area will be relatively dense, and because the driving circuit has a certain reflective effect under the screen, the display effect of the surrounding area of the sub-screen area will be quite different from other areas; When the driving circuit of the light-emitting pixels in the sub-screen area is set in the transition area, in order to reduce the impact of reflection, if the number of driving circuits is reduced and the "one drive multiple" method is adopted, the display effect of the sub-screen area will be affected.

In view of the above problems, the inventor proposes the display panel, the display screen and the electronic equipment provided by the embodiments of the present application, which can make the driving circuits in the first area evenly distributed, so that the display effect can be ensured and the display unevenness can be avoided. It can also avoid the unevenness of the display screen caused by the uneven distribution of the driving circuits, improve the uniformity of the display effect of the display panel, and further improve the display effect of the display panel. Wherein, the specific display panel will be described in detail in the subsequent embodiments.

The display panel provided by the embodiment of the present application will be described in detail below.

Referring to FIG. 3 , the 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 , and the second area 120 is configured to correspond to photosensitive elements.

Please refer to FIG. 4. Only the first region 110 and a part of the second region 120 are shown in FIG. 4. The first region 110 is provided with a plurality of first light-emitting pixels 101 distributed in an array, and a plurality of first pixels distributed in an array. Driving circuit 131, a plurality of first pixel driving circuits 131 are connected to a plurality of first light-emitting pixels 101 in 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 uniform distributed in the first region 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 arranged in the first area 110, the target number of second pixel driving circuits 132 and the plurality of second pixel driving circuits 132 The light-emitting pixels 102 are connected in one-to-one correspondence. Wherein, 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 numerical value of the target number is not limited, and the plurality of second light-emitting pixels 102 in the second area 120 correspond to the target number of second pixel driving circuits 132 one-to-one, thus, the first area 110 and the second area 120 Each light-emitting pixel is connected to a pixel driving circuit to realize a "one driving one" pixel circuit and improve the display effect of the display panel 10; in addition, since a plurality of second pixel driving circuits 132 are evenly distributed in the first region 110, and The first pixel driving circuits 131 connected to the first light-emitting pixels 101 in the first region 110 are distributed in the first region 110 in an array. Therefore, the distribution of the pixel driving circuits in the first region 110 can be evenly distributed, and the pixel driving circuits can be avoided. Under the effect of light reflection, the non-uniformity of the screen (screen Mura) phenomenon caused by the uneven distribution of the driving circuit can improve the uniformity of the display effect of the display panel 10, and can avoid the phenomenon of pixel driving circuit when the screen is turned off. Reflection of light leads to non-uniform rendering of the first region 110 in the display region 100 of the display panel 10 .

Wherein, the photosensitive element corresponding to the second area 120 may not be limited, for example, a camera is set to realize an under-screen camera; another example, a proximity sensor is set to realize the proximity detection function, of course, the photosensitive element specifically 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 (Organic Light-Emitting Diode, OLED), inorganic light-emitting diode, and the like. 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 electroluminescent diodes; when the display panel 10 is an AMOLED display panel, the light-emitting pixels Can be an active matrix organic light emitting diode. Optionally, the light emitting pixels may at least include red light emitting pixels, green light emitting pixels and blue light emitting pixels. The red light-emitting pixels are used to emit red light, the green light-emitting pixels are used to emit green light, and the blue light-emitting pixels are used to emit blue light. The driving circuit of each light-emitting pixel can be the same, but the light-emitting layer materials of different color light-emitting pixels are different, so that The display of different colors is realized, so that the display panel 10 realizes full-color display.

Exemplarily, 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, light-emitting pixels including four different colors. In the embodiment of the present application, the above-mentioned first light-emitting pixel 101 and second light-emitting pixel 102 include light-emitting pixels of three different colors as an example for illustration, and 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 exemplary description, 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 and arranged in sequence. Wherein, the light-emitting layer includes at least a light-emitting material layer, and the light-emitting material layer includes organic light-emitting materials, and light-emitting materials with appropriate light-emitting wavelengths can be set according to 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 carrier injection barrier between adjacent film layers, thereby improving the efficiency of carrier injection. Optionally, 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 anodes of the light-emitting pixels face up, and the cathodes of the light-emitting pixels face down, so that the layout of the driving circuit is facilitated.

As a possible implementation mode, since the position of the second area 120 of the display panel 10 in this embodiment is used to install photosensitive elements, there is a higher 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 can be both 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, respectively used to drive the light emission of the first light-emitting pixel 101 and the second light-emitting pixel 102, and the pixel driving circuit may include storage capacitors and several switching elements, the switching elements It may be any type of transistor, for example, a bipolar junction transistor (bipolar junction transistor, BJT), a field effect transistor (Field Effect Transistor, FET), or a thin film transistor (Thin Film Transistor, TFT). The field effect transistor can specifically be a Metal Oxide Semiconductor Field Effect Transistor (MOSFET), for example, an N-type Metal-Oxide-Semiconductor (N-Metal-Oxide-Semiconductor, NMOS) or a P-type Metal Oxide Semiconductor Tube (P-Metal-Oxide-Semiconductor, PMOS). Optionally, the driving circuit may be composed of thin film transistors, for example, may be a driving circuit based on a 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 a lighting control unit 1315 .

Specifically, the driving transistor T1 is used to generate a driving current. Wherein, 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. Wherein, 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 used to receive the second scan signal Scan(n), the input terminal of the anode reset unit 1311 is used 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 used to receive the reset voltage Vinit through the input terminal after the gate of the driving transistor T1 is reset, and pull down the anode of the first light-emitting pixel connected to it to the reset voltage Vinit, so as to reset the anode of the first light-emitting pixel. Do a reset. Wherein, the reset voltage Vinit can be understood as the initial charging voltage of the anode of the first light-emitting pixel. By resetting the anode of the first light-emitting pixel, the driving current 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. The driving current affects the reliability of the luminous brightness of the first luminescent 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 end 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 scanning signal Scan(n-1) received by the control terminal, so as 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 pole of the data writing transistor T2 is connected to the data signal line, and the data writing transistor T2 is connected to the data signal line. The second pole of the transistor T2 is connected to the first pole of the driving transistor T1, and 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). On and off of the transmission path. Specifically, taking the data writing transistor T2 as a P-type transistor as an example, when the second scanning 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 transistor of the driving transistor T1. One pole; when the second scan signal Scan(n) is at 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 of this embodiment, and may also be other circuit structures capable of realizing the signal transmission function according to the enable control signal.

The threshold compensation unit 1314 is connected to the gate and the second electrode of the driving transistor T1 respectively, and is used for controlling the on-off of the signal transmission path between the gate 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, so as to prevent the threshold voltage of the driving transistor T1 from affecting the brightness of the first light-emitting pixel.

Wherein, 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 for controlling the on-off of the signal transmission path between the gate 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 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 .

Optionally, the threshold compensation transistor T3 may be a double-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 double-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 terminal of the driving transistor T1. The first control transistor T5 is used to control the on-off of 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 emission control signal EM, the first pole of the second control transistor T6 is connected to the second pole of the driving transistor T1, the second pole of the second control transistor T6 is the anode of the first light emitting pixel The second control transistor T6 is used 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 light-emitting control signal EM. Exemplarily, the first control transistor T5 and the second control transistor T6 are P-type transistors as an example for illustration, 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, Pull up the voltage of the first pole of the driving transistor T1 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 Pixels glow.

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

Optionally, for the first light-emitting pixels 101 of the same color, the length difference of the driving wires between the first light-emitting pixels 101 and the first driving circuit 131 connected thereto may be the same, thereby ensuring the first light-emitting pixels of the same color The response speed and 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 phenomenon of uneven screen brightness caused by uneven distribution of driving circuits.

In some implementations, since the plurality of first luminous pixels 101 are arranged in an array, the array formed by the plurality of first luminous pixels 101 may include multiple rows and columns of first luminous pixels 101; similarly, Since the multiple first pixel driving circuits 131 are also arranged in an array, the array formed by the multiple first pixel driving circuits 131 may include multiple rows and multiple columns of the 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 region 110 in 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 first pixel driving circuits 131 is the same as the number of first light-emitting pixels 101 .

As a possible implementation manner, the first pixel driving circuit 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 be connected to The first light-emitting pixels 101 overlap or are adjacent to each other, thereby reducing the length of the wiring.

In some implementations, as shown in FIG. 3 , the second area 120 may be circular and located in the middle area on the upper side of the display panel 10 . Certainly, the specific shape of the second region 120 may not be limited, and the second region 120 may also be rectangular, square, oval, etc.; the position of the second region 120 in the display panel 10 may not be limited, for example, It is located in the middle area or the bottom area of the display panel 10 to adapt to photosensitive elements with different functions or different sizes. Exemplarily, FIG. 5 is another schematic structural 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 located at the bottom of the display panel 10 .

In one embodiment, referring 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 second sub-region 112 are connected to the plurality of second light-emitting pixels 102 in a 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 a wire, and the length of the wire will affect the resistance and capacitance load in the screen. The size of (Resistance capacitance load in screen, RC Loading) affects the time when the second light-emitting pixel 102 starts to light up, thereby affecting the display effect of the second region 120. Therefore, the second pixel driving circuit 132 closer to the second region 120 is connected to the second light-emitting pixel 102 in the second region 120 , thereby reducing the length of the wiring and ensuring 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 understood that, in order to ensure the uniformity of distribution of pixel driving circuits in the first region 110, the plurality of second pixel driving circuits 132 are evenly arranged in the first region 110, but not all of the plurality of second pixel driving circuits 132 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 acts as a dummy pixel driving circuit (dummy pixel driving circuit) without being connected to any light-emitting pixel, so that not only the size and arrangement of the pixel driving circuit can be optimized, It can also ensure the uniformity of distribution of the pixel driving circuits in the first region 110 .

In some embodiments, please refer 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 along the row direction. The number of 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 second pixel driving circuits 132 connected to the second light-emitting pixels 102 located in the second target sub-region 1122 . Wherein, the row direction is parallel to the width direction of the display panel. Certainly, the first sub-region 111 also includes other sub-regions except the first target sub-region 1121 and the second target sub-region 1122 , but the second pixel driving circuit 132 in other sub-regions is not connected to the second light-emitting pixel 102 . It can be understood that since the second area 120 for setting 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, by connecting the second pixel driving circuits 132 adjacent to the left and right sides of the second region 120 to the second light-emitting pixels 102 in the second region 120, that is, the above-mentioned first target sub-region 1121 and second target sub-region 1122 The second pixel driving circuits 132 in the second region 120 are connected to the second pixel driving circuits 132 in the second area 120, and the number of the second pixel driving circuits 132 connected to the second light emitting pixels 102 in the first target sub-region 1121 is the same as the second The number of second pixel drive circuits 132 connected to the second luminous pixels 102 in the target sub-region 1122 is the same, so that the second driven pixel circuit 132 that is closer can be selected to be connected to the second luminous pixels 102 in the second region 120 , to further reduce the length of the trace to avoid the impact of RC Loading on the display effect.

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

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

Optionally, referring 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, in the case that 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, it is possible to reduce the length of the wires through horizontal wires, thereby reducing the effect of RC Loading on the display. The effect of the display panel 10 is guaranteed to ensure the display uniformity.

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 along the column direction, located in the third target sub-region The number of second pixel driving circuits 132 connected to the second light-emitting pixels 102 in 1123 is the same as the number of second pixel driving circuits 132 connected to the second light-emitting pixels 102 located in the fourth target sub-region 1124 . Wherein, the column direction is parallel to the length direction of the display panel. Certainly, the first sub-region 111 also includes other sub-regions except the third target sub-region 1123 and the fourth target sub-region 1124 , but the second pixel driving circuit 132 in other sub-regions is not connected to the second light-emitting pixel 102 . It can be understood that since the second region 120 for setting the photosensitive element is usually located in the middle region, the left region or the right region above the display panel 10, the two sides (ie, the upper and lower sides) of the second region 120 along the column direction are often Each side) has a certain display area, therefore, the second pixel driving circuit 132 adjacent to the two sides of the second area 120 along the column direction can be connected to the second light-emitting pixel 102 in the second area 120, that is, the above-mentioned first The second pixel driving circuit 132 in the third target sub-region 1123 and the fourth target sub-region 1124 is connected to the second light-emitting pixel 102 in the second region 120, and the third target sub-region 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 circuits 132 and the second pixel driving circuits 132 can be selected. The second light-emitting pixels 102 in the second region 120 are connected to further reduce the length of the wires and avoid the influence of RC Loading on the display effect.

Similarly, in this embodiment, the second pixel driving circuit 132 in the first target column in the third target sub-area 1123 and the fourth target sub-area 1124 and the second pixel driving circuit 132 in the second target column in the second area 120 At least part of the second light-emitting pixels 102 in the light-emitting pixels 102 are connected, the first target column is 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 pixels are located It is adjacent to the first target column where the second pixel driving circuit is located, so as to reduce the length of the wiring. In addition, the wiring between the second pixel driving circuit 132 in the third target sub-region 1123 and the fourth target sub-region 1124 and the second light-emitting pixel 102 connected thereto can also extend along the column direction, so as to further reduce the length of the wiring.

In a possible implementation manner, please refer to FIG. 10 , the above-mentioned second sub-region 112 may also include the above-mentioned first target sub-region 1121 , second target sub-region 1122 , third target sub-region 1123 and 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 of the row direction. Therefore, the connection between the second pixel driving circuit 132 around the second region 120 and the second light-emitting pixel 102 can be fully utilized, the length of the wiring can be further reduced, and the influence of RC Loading on the display effect can be reduced.

Optionally, the second pixel driving circuit 132 in the first target sub-region 1121 is connected to the second light-emitting pixel 102 adjacent to the first target sub-region 1121 in the second region 120, and the second pixel in the second target sub-region 1122 The driving circuit 132 is connected to the second light-emitting pixel 102 adjacent to the second target sub-region 1122 in the second region 120, and the second pixel driving circuit 132 in the third target sub-region 1123 is connected to the second pixel driving circuit 132 in the second region 120 adjacent to the third target sub-region 1123 is connected to the second light-emitting pixel 102 , and the second pixel driving circuit 132 in the fourth target sub-region 1124 is connected to the second light-emitting pixel 102 adjacent to the fourth target sub-region 1124 in the second region 120 . Therefore, when the second pixel driving circuit 132 around the second region 120 is used to connect to the second light-emitting pixel 102, all the surrounding second pixel driving circuits 132 are connected to the adjacent second light-emitting pixel 1021, thereby reducing wiring length.

Optionally, 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 , the second pixel driving circuit connected to the second light-emitting pixel 102 of the second region 120 The number of 132 can be the same, thus, the second pixel driving circuits 132 connected to the second light-emitting pixels 102 in the second region 120 can be evenly distributed around the second region 120 to ensure the uniformity of the manufacturing process.

In a possible implementation manner, please refer to FIG. 11 , a plurality of second pixel driving circuits 132 are arranged in multiple columns, uniformly distributed in the first region 110 along the row direction, and a column is provided for every N columns of first pixel driving circuits 131 The row direction of the second pixel driving circuits 132 (4 columns apart in FIG. 10 ) is parallel to the width direction of the display panel. Wherein, N is a positive integer. Thus, the second pixel driving circuit 132 can be uniformly inserted in the first region 110, so that the distribution of the pixel driving circuits in the first region 110 is relatively uniform, and the display effect can be ensured and the uneven display can be avoided. The phenomenon of non-uniform display screen caused by uneven distribution of pixel driving circuits can be avoided.

In another possible implementation manner, please refer to FIG. 12 , wherein, in order to simplify the drawing, FIG. 12 only shows part of the connection between the second pixel driving circuit 132 and the second light-emitting pixel 102 . A plurality of second pixel driving circuits 132 can also be arranged in multiple rows, and are evenly distributed in the first region 110 along the column direction, and a row of second pixel driving circuits 132 is provided for every N rows of first pixel driving circuits 131 (in FIG. 12, interval 2 rows), and the column direction is parallel to the length direction of the display panel. Wherein, N is a positive integer. Thus, the second pixel driving circuit 132 can be uniformly inserted in the first region 110, so that the distribution of the pixel driving circuits in the first region 110 is relatively uniform, and the display effect can be ensured and the uneven display can be avoided. The phenomenon of non-uniform display screen caused by uneven distribution of pixel driving circuits can be avoided.

In the above two implementation manners, the value range of N is 2-8. Therefore, the distribution density of the second pixel driving circuits 132 in the first region 110 can be guaranteed to a certain extent, so that when selecting the second pixel driving circuits 132 adjacent to the second region 120 and the second light-emitting pixels 102 in the second region 120 When connecting, the second pixel driving circuit 132 that is closer can be selected to be connected to the second light-emitting pixel 102 in the second area 120, further reducing the length of the wiring, thereby reducing the influence of RC loading on the lighting time of the pixel, and avoiding The positions of the two light-emitting pixels 102 are different, and the lengths of the wires are different, causing the problem of uneven display effect when the RC loading is inconsistent. For example, please refer to FIG. 4 again, N may be 3, that is, every 3 columns of first pixel driving circuits 131 are inserted with 1 column of second pixel driving circuits 132 . For another example, referring to FIG. 11 , N may be 4, that is, every 4 columns of first pixel driving circuits 131 are inserted with 1 column of second pixel driving circuits 132 . Of course, the above is just an example, and is not limited to the illustrated solution. It is also possible to insert a column of second pixel drive circuits 132 for every 2 columns of first pixel drive circuits 131, and insert a column of 1st pixel drive circuits 131 for every 6 columns of first pixel drive circuits 131. Two pixel driving circuits 132 are inserted into one column of second pixel driving circuits 132 for every eight columns of first pixel driving circuits 131 .

In the above two implementation manners, the outer dimension of each second pixel driving circuit 132 is the same as the outer dimension of each first pixel driving circuit 131 . In this way, the structure, size and spacing of the pixel driving circuits in the first region 110 can be made consistent, making the distribution more uniform, and avoiding the problem of screen mura caused by inconsistent density of circuit traces. Moreover, the consistent structure of the pixel driving circuit is also conducive to the stability of the manufacturing process, ensuring the electrical consistency of the thin film transistors and ensuring the uniformity of the display.

In a possible implementation manner, referring to FIG. 13 , the second light-emitting pixel 102 includes a red light-emitting pixel, a green light-emitting pixel, and a blue light-emitting pixel, and adjacent red light-emitting pixels, green light-emitting pixels, and blue light-emitting pixels are combined to form A 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 region 120, the distance between the green light-emitting pixel and the second pixel driving circuit 132 connected thereto is longer than the distance between the red light-emitting pixel and the second pixel driving circuit 132 connected thereto. short. It can be understood that since the charging time required for the green light-emitting pixels is longer, in order to ensure that the moment of starting to light up (light-up time) in the same pixel unit 1021 is close, that is, the response speed is close, the same pixel unit 1021 can be made to emit green light. The length of the trace corresponding to the pixel is shorter than the length of the trace corresponding to the blue light-emitting pixel, so the RC loading generated by the trace corresponding to the green light-emitting pixel will be smaller than the RC loading generated by the trace corresponding to the blue light-emitting pixel, so that the blue light emits light The lighting time of the pixel is close to that of the green emitting pixel.

In another possible implementation manner, please refer to FIG. 14 , the second light-emitting pixel 102 includes a red light-emitting pixel, a green light-emitting pixel, and a blue light-emitting pixel, and the combination of adjacent red light-emitting pixels, green light-emitting pixels, and blue light-emitting pixels A 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 region 120, the distance between the green light-emitting pixel and the second pixel driving circuit 132 connected thereto is longer than the distance between the red light-emitting pixel and the second pixel driving circuit 132 connected thereto. short. It can be understood that since the charging time required for the green light-emitting pixels is longer, in order to ensure that the moment of starting to light up (light-up time) in the same pixel unit 1021 is close, that is, the response speed is close, the green light 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 light-emitting pixel, so that the RC loading generated by the trace corresponding to the green light-emitting pixel will be smaller than the RC loading generated by the trace corresponding to the red light-emitting pixel, so that the red light-emitting pixel and the green The lighting time of the light-emitting pixels is close.

In the above two implementation manners, optionally, one pixel unit 1021 may include two green light-emitting pixels, one red light-emitting pixel and one blue light-emitting pixel. Understandably, since the human eye is more sensitive to green, and to facilitate color restoration processing, a combination of two green light-emitting pixels, one red light-emitting pixel and one blue light-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 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 . Thus, it can be ensured that the distribution density of light-emitting pixels in the second area 120 and the first area 110 for setting the photosensitive element are the same, and 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 implementations, please refer to FIG. 13 and FIG. 14 again, for the same color of the luminous pixels, the second luminous pixel 102 is smaller than the external dimension of the first luminous pixel 101 . In this way, the distance between the second light-emitting pixels 102 in the second region 120 can be greater than the distance between the first light-emitting pixels 101 in the first region 110, thereby increasing the amount of light transmitted, thereby ensuring that the second light-emitting pixels 102 are arranged under the second region 120 The working effect of the photosensitive element.

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 region 120 through transparent wires. It can be understood that since the photosensitive element is arranged under the second region 120, the wiring between the second pixel driving circuit 132 and the second light-emitting pixel 102 in the second region 120 will pass through the second region 120, Therefore, realizing the connection between the second pixel driving circuit 132 and the second light-emitting pixel 102 in the second region 120 through transparent wiring can ensure the amount of light transmitted in the second region 120 , thereby ensuring that the second pixel driving circuit 132 is arranged under the second region 120 The working effect of the photosensitive element.

In some implementation manners, the transparent wiring includes: indium tin oxide ITO wiring or indium zinc oxide IZO wiring. It can be understood that both the ITO material and the IZO material are transparent materials, so the connection between the second pixel driving circuit 132 and the second light-emitting pixel 102 in the second region 120 is realized through the ITO wiring or the IZO wiring, which can ensure that the first The light transmittance of the second area 120 . In addition, the ITO material and the IZO material have low impedance, thus ensuring the normal operation of the light-emitting pixel. Of course, the specific material of the transparent traces may not be limited, and may also be traces of other materials, as long as the light transmittance and low impedance need to be ensured.

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

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

In another possible implementation manner, the first light-emitting pixels 101 in the first region 110 and the second light-emitting pixels 102 in the second region 120 may be arranged in an RGB arrangement. Wherein, please refer to FIG. 15. In FIG. 15, R represents a red light-emitting pixel, G represents a green light-emitting pixel, and B represents a blue light-emitting pixel. Each pixel unit 1021 in the first region 110 and the second region 120 includes a green The light-emitting pixels, one red light-emitting pixel and one blue light-emitting pixel, 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, and the light-emitting pixels of different colors are respectively located in different columns.

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

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

In some embodiments, please refer to FIG. 13 and FIG. 14 again, the shape of the first light-emitting pixels 101 in the first region 110 may be rectangular, and the shape of the second light-emitting pixels 102 in the second region 120 may be circular. Certainly, the shapes of the first light-emitting pixels 101 and the second light-emitting pixels 102 may also be the same, 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. The pixel driving circuit 131 is electrically connected to the target number of second pixel driving circuits 132 connected to the second light-emitting pixels 102; The orthographic projections on are at least partially overlapping. Wherein, the peripheral circuit 140 may be a circuit for providing scanning control signals and light emission control signals to the pixel driving circuit, which 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 and the orthographic projection of the first light-emitting pixel 101 on the display plane 400 at least partially overlap, the peripheral circuit 140 outside the display area of the display panel 10 can be reduced. area, so as to avoid the phenomenon of black borders on the display panel 10 and realize the display panel 10 with narrow borders.

Optionally, please refer to FIG. 18 , the peripheral circuit 140 can be divided into two parts and located on both sides of the pixel driving circuit 130, and the orthographic projection of the peripheral circuit 140 on the display plane 400 on both sides is the same as that of the first light-emitting pixel 101 on 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 circuits 400 at symmetrical positions, 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, therefore The driving circuits in the first area can be evenly distributed, so while ensuring the display effect and avoiding uneven display, it is also possible to avoid the phenomenon of uneven screen information caused by uneven distribution of the driving circuits, and improve the performance of the display panel. 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 plate 210 and the display panel 10 provided in the foregoing embodiments. Wherein, 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 present application also provides an electronic device 300. FIG. 20 is a schematic structural diagram of the electronic device 300 provided in the embodiment of the present application, wherein the electronic device 300 includes a housing 310, the display screen 200 provided in the foregoing embodiments, 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 . The photosensitive element 320 is disposed in the housing 310 and 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 pass through the second area 120 and enter the photosensitive element 320 , and the second area 120 is in contact with 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 (that is, the delivery of the second area 120), and it is not limited to the one shown in the figure. 20 as shown in the mobile phone.

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

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

Optionally, the photosensitive device 320 may also be a camera, which is provided with a plurality of sensors arranged in an array, and forms a complete image according to the photosensitive result of each sensor.

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

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 . Certainly, the specific shape of the second area 120 may not be limited, and the second area 120 may also be a rectangle, a square, an ellipse, etc.; It is located in the middle area or the 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 used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not drive the essence of the corresponding technical solutions away from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims (22)

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

   The first region is provided with a plurality of first light-emitting pixels distributed in an array, and a plurality of first pixel drive circuits distributed in an array, and the plurality of first pixel drive circuits correspond to the plurality of first light-emitting pixels one by one connected to drive each of the first light-emitting pixels to emit light;

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

   The first area is also provided with a plurality of second pixel driving circuits, the plurality of second pixel driving circuits are evenly distributed in the first area, and the target number of the second pixel driving circuits and the plurality of the second pixel driving circuits are The two light-emitting pixels are connected in one-to-one correspondence to drive the second light-emitting pixel to emit light.
2. The display panel according to claim 1, the first area comprises a first sub-area and a second sub-area, the second sub-area is closer to the second area than the first sub-area;

   The plurality of second pixel driving circuits located 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.
3. According to the display panel according to claim 2, 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.
4. The display panel according to claim 2 or 3, the second sub-area includes a first target sub-area and a second target sub-area located on both sides of the second area along the row direction, and the first target sub-area is located The number of second pixel driving circuits connected to the second light-emitting pixels in the sub-region 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 parallel to the width direction of the display panel.
5. The display panel according to claim 4, 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 pixel driving circuit of at least one second target row in the second region At least part of the second light-emitting pixels in the light-emitting pixels are connected, the first target row is in any row in the same row in the first target sub-region and the second target sub-region, and the second light-emitting pixel where the second light-emitting pixel is located The second target row is adjacent to the first target row where the second pixel driving circuit is located.
6. The display panel according to claim 5 , 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 pixels connected thereto extends along the row direction.
7. The display panel according to claim 2 or 3, the second sub-area includes a third target sub-area and a fourth target sub-area located on both sides of the second area along the column direction, and the third target sub-area is located The number of second pixel driving circuits connected to the second luminous pixels in the sub-region is the same as the number of second pixel driving circuits connected to the second luminous pixels located in the fourth target sub-region;

   The column direction is parallel to the length direction of the display panel.
8. According to the display panel according to any one of claims 1-7, a plurality of the second pixel driving circuits are arranged in multiple columns, uniformly distributed in the first region along the row direction, and every N columns of the first pixel driving circuits A column of the second pixel driving circuits is provided, the row direction is parallel to the width direction of the display panel, and the N is a positive integer.
9. According to the display panel according to any one of claims 1-7, a plurality of the second pixel driving circuits are arranged in multiple rows, uniformly distributed in the first region along the column direction, and every N rows of first pixel driving circuits A row of the second pixel driving circuits is provided, the column direction is parallel to the length direction of the display panel, and the N is a positive integer.
10. The display panel according to claim 8 or 9, wherein the value range of N is 2-8.
11. The display panel according to any one of claims 1-10, wherein the external dimensions of each of the second pixel driving circuits are the same as the external dimensions of each of the first pixel driving circuits.
12. According to the display panel according to any one of claims 1-11, the second light-emitting pixels 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 combined to form a pixel unit;

    In each pixel unit distributed in the second area, the distance between the green light-emitting pixel and the second pixel driving circuit connected thereto is shorter than the distance between the red light-emitting pixel and the second pixel driving circuit connected thereto.
13. According to the display panel according to any one of claims 1-11, the second light-emitting pixels 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 combined to form a pixel unit;

    In each of the pixel units distributed in the second area, the distance between the green light-emitting pixel and the corresponding second pixel driving circuit is compared with the distance between the blue light-emitting pixel and the second pixel driving circuit connected thereto Shorter.
14. The display panel according to claim 12 or 13, wherein one pixel unit includes two green light-emitting pixels, one red light-emitting pixel and one blue light-emitting pixel.
15. The display panel according to any one of claims 1-14, wherein 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.
16. According to the display panel according to claim 16, for the luminous pixels of the same color, the external dimension of the second luminous pixel is smaller than that of the first luminous pixel.
17. The display panel according to any one of claims 1-16, wherein the second pixel driving circuit is electrically connected to the second light-emitting pixel through a transparent wire.
18. The display panel according to claim 17, wherein the transparent wires include: indium tin oxide (ITO) wires or indium zinc oxide (IZO) wires.
19. The display panel according to any one of claims 1-18, 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 according to any one of claims 1-19, further comprising a peripheral circuit, the peripheral circuit is connected to the first pixel driving circuit and the target number of the second light-emitting pixels. The second pixel driving circuit is electrically connected;

    The orthographic projection of the peripheral circuit on the display plane of the display panel at least partially overlaps the orthographic projection of the first light-emitting pixel on the display plane.
21. A display screen, comprising a cover plate and the display panel according to any one of claims 1-20.
22. An electronic device comprising:

    case;

    The display screen according to claim 21, the display screen is arranged on the housing;

    A photosensitive element, the photosensitive element is arranged in the housing and is arranged corresponding to the second area.

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