Display panel and display device
By optimizing the layout of the driving circuit and pixel arrangement in the OLED display, the impact of the under-display camera driving circuit on the green sub-pixels was resolved, improving the display effect and transmittance of the white screen and achieving a full-screen design with high display effect and low power consumption.
Patent Information
- Application Number
- CN202511292369.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-10
- Publication Date
- 2025-11-18
AI Technical Summary
The driving circuit configuration in the under-display camera area of existing OLED displays affects the light emission effect of green sub-pixels, resulting in uneven brightness of white screens and making it difficult to meet the requirements of high display effect and low power consumption for full-screen displays.
In the display panel, by separating the first red light driving circuit and the first blue light driving circuit between the first green light driving circuit and the second effective pixel circuit, the second effective pixel circuit is moved away from the first green light driving circuit, reducing the coupling effect, and a real physical pixel arrangement is adopted in the first display area and the second display area to improve the display effect of the white screen.
It effectively reduces the coupling effect of the green light driving circuit, improves the display effect and light transmittance of the white screen, meets the display requirements of full screen, and reduces power consumption.
Smart Images

Figure CN120977248A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of display technology, and more particularly to a display panel and display device. Background Technology
[0002] Organic light-emitting diodes (OLEDs) are active light-emitting display devices. With the continuous development of display technology, the market has increasingly higher requirements for full-screen displays of various OLED screens. Among them, under-display camera (CUP) technology is an effective way to achieve full-screen displays. At the same time, the market has increasingly higher requirements for screen display effects and low power consumption.
[0003] Currently, the market commonly uses sub-pixel rendering (SPR) technology for pixel layout. Although this technology can reduce the number of physical subpixels while maintaining visually equivalent resolution, the display effect will be affected to some extent.
[0004] Secondly, both the main display area and the CPU area of the OLED panel have multiple repeating units, each including 4 green sub-pixels, 2 blue sub-pixels, and 2 red sub-pixels. To improve light transmission in the CPU area, the pixel circuits driving the sub-pixels within the CPU area are usually located in the main display area outside the CPU area. This results in the pixel circuits driving the CPU area being located next to the pixel circuits driving the green sub-pixels in the main display area, thus affecting the light emission effect of the green sub-pixels. Since green light has the highest brightness proportion in a white screen, this has a significant impact on the white screen. Summary of the Invention
[0005] This application provides a display panel and display device that improve the display effect of white screen.
[0006] To achieve the above objectives, according to a first aspect of this application, a display panel is provided, including a first display area and a second display area, wherein the first display area is located on at least one side of the second display area, and the display panel includes:
[0007] Multiple first light-emitting units are disposed in the first display area, and the first light-emitting unit includes a first red light-emitting device, a first green light-emitting device, and a first blue light-emitting device;
[0008] Multiple second light-emitting units are disposed in the second display area, and the second display area includes multiple second light-emitting devices;
[0009] Multiple first pixel circuits are disposed in the first display area. The multiple first pixel circuits include a first red light driving circuit connected to the first red light emitting device, a first green light driving circuit connected to the first green light emitting device, and a first blue light driving circuit connected to the first blue light emitting device.
[0010] Multiple second pixel circuits are disposed in the first display area, and the multiple second pixel circuits include second effective pixel circuits. The second effective pixel circuits are connected to and drive the second light-emitting device to emit light.
[0011] In the display panel viewed from above, a plurality of first pixel circuits are arranged along a first direction. In the first direction, one of the first red light driving circuit and the first blue light driving circuit is spaced apart from any second effective pixel circuit and the adjacent first green light driving circuit.
[0012] Optionally, in some embodiments, the first display area includes a first sub-area and a second sub-area connected together. In the first direction, the second sub-area is located on one side or opposite side of the second display area and forms a display combination area with the second display area. The first sub-area at least partially surrounds the outer periphery of the display combination area, and the second effective pixel circuit is disposed in the second sub-area.
[0013] The display panel includes a plurality of repeating units disposed in the first display area. The repeating unit includes a first red light driving circuit, a first green light driving circuit, and a first blue light driving circuit. In the first direction in the second sub-area, any two adjacent second effective pixel circuits are spaced apart by one of the repeating units. One side of a second effective pixel circuit is adjacent to one of the first red light driving circuit and the first blue light driving circuit, and the other side of a second effective pixel circuit is adjacent to the other of the first red light driving circuit and the first blue light driving circuit.
[0014] Optionally, in some embodiments, the repeating unit includes two first red light driving circuits, two first green light driving circuits, and two first blue light driving circuits. In the first direction, the second and fifth pixel circuits are first green light driving circuits, the first and fourth pixel circuits are one of the first red light driving circuits and the first blue light driving circuits, and the third and sixth pixel circuits are the other of the first red light driving circuits and the first blue light driving circuits.
[0015] Optionally, in some embodiments, the second sub-region is located on the opposite side of the second display area, and the second effective pixel circuit disposed in one of the plurality of second effective pixel circuits in the second sub-region is a first part circuit, and the second effective pixel circuit disposed in another of the plurality of second effective pixel circuits in the second sub-region is a second part circuit. The first part circuit is connected to a second light-emitting device in the second display area near the first part circuit, and the second part circuit is connected to a second light-emitting device in the second display area near the second part circuit.
[0016] Optionally, in some embodiments, the plurality of second pixel circuits include a plurality of second redundant pixel circuits, the second redundant pixel circuits being configured not to drive any light-emitting devices, and the second redundant pixel circuits being disposed in the first sub-region;
[0017] In the display panel viewed from above, in the first direction, one of the first red light driving circuit and the first blue light driving circuit is spaced apart between any of the first green light driving circuits and the second redundant pixel circuits.
[0018] Optionally, in some embodiments, in the first direction, the arrangement period of the second redundant pixel circuit and the first pixel circuit is the same as the arrangement period of the second effective pixel circuit and the first pixel circuit.
[0019] Optionally, in some embodiments, in the first display area, in the first direction, every six consecutive first pixel circuits constitute a repeating unit;
[0020] In the first direction of the first sub-region, a second redundant pixel circuit and a repeating unit are alternately arranged; in the first direction of the second sub-region, a second effective pixel circuit and a repeating unit are alternately arranged.
[0021] Optionally, in some embodiments, the repeating unit includes two first red light driving circuits, two first green light driving circuits, and two first blue light driving circuits. In the first direction, the second and fifth pixel circuits are first green light driving circuits, the first and fourth pixel circuits are one of the first red light driving circuits and the first blue light driving circuits, and the third and sixth pixel circuits are the other of the first red light driving circuits and the first blue light driving circuits.
[0022] In the first direction of the first sub-region, a second redundant pixel circuit is disposed between the first red light driving circuit and the first blue light driving circuit; in the first direction of the second sub-region, a second effective pixel circuit is disposed between the first red light driving circuit and the first blue light driving circuit.
[0023] Optionally, in some embodiments, a second effective pixel circuit is connected to at least two second light-emitting devices that emit light of the same color.
[0024] Optionally, in some embodiments, the first light-emitting unit is a light-emitting pixel, and the second light-emitting unit is another light-emitting pixel, wherein the second light-emitting unit includes a second red light-emitting device, a second green light-emitting device, and a second blue light-emitting device;
[0025] In the first display area, a plurality of first light-emitting units are arranged along the first direction and along a second direction intersecting the first direction; in the second display area, a plurality of second light-emitting units are arranged along the first direction and along a second direction intersecting the second direction.
[0026] Optionally, in some embodiments, both the first pixel circuit and the second pixel circuit include a first transistor, a second transistor, a third transistor, a fourth transistor, a first capacitor, and a second capacitor;
[0027] The first transistor is a driving transistor. The gate of the first transistor is connected to the first node, the input of the first transistor is connected to the second node, the output of the first transistor is connected to the third node, one end of the first capacitor is connected to the first node, and the other end of the first capacitor is connected to a positive voltage power supply signal. One end of the second capacitor is connected to the first node, and the other end of the second capacitor is connected to the gate of the second transistor. The input of the second transistor is connected to a data signal, and the output of the second transistor is connected to the second node.
[0028] The gate of the third transistor is connected to the second scan signal, the input of the third transistor is connected to the first node, the output of the third transistor is connected to the third node, the gate of the fourth transistor is connected to the third scan signal, the input of the fourth transistor is connected to the first reset signal, and the output of the fourth transistor is connected to the third node.
[0029] The third transistor and the fourth transistor are N-type thin-film transistors.
[0030] Optionally, in some embodiments, the display panel includes a substrate, a first transparent conductive layer, and an anode, wherein the first transparent conductive layer is disposed on the substrate, and the anode is directly disposed on the surface of the first transparent conductive layer away from the substrate;
[0031] The first transparent conductive layer includes multiple connecting portions located in the second display area. Each connecting portion includes a base electrode and a connecting line. One end of the connecting line is connected to one of the base electrodes, and the other end of the connecting line is connected to another base electrode. A corresponding anode is connected to one of the base electrodes.
[0032] Optionally, in some embodiments, the display panel further includes a second transparent conductive layer and a third transparent conductive layer, wherein the first transparent conductive layer, the second transparent conductive layer and the third transparent conductive layer are disposed in different layers from each other, and the third transparent conductive layer is disposed between the first transparent conductive layer and the second transparent conductive layer;
[0033] The second transparent conductive layer includes multiple second traces, and the third transparent conductive layer includes multiple third traces and multiple transition portions. Both the second traces and the third traces extend from the first display area to the second display area. The multiple transition portions are disposed in the second display area. Specifically, one second trace is connected to one second effective pixel circuit and one transition portion, one transition portion is connected to one connection portion, and one third trace is connected to another second effective pixel circuit and another connection portion.
[0034] In the second direction, the second and third traces are arranged alternately.
[0035] Optionally, in some embodiments, the plurality of connecting lines include a first connecting line, the first connecting line including a first part, a middle part and a second part, the first part being connected to one of the base electrodes, the middle part being connected between the first part and the second part, and the second part being connected to another of the base electrodes;
[0036] The middle part is a curved loop.
[0037] Optionally, in some embodiments, the plurality of connecting portions include a first connecting portion, a second connecting portion, and a third connecting portion, wherein the first connecting portion connects to two second blue light-emitting devices, the second connecting portion connects to two second red light-emitting devices, and the third connecting portion connects to two second green light-emitting devices;
[0038] The first connecting portion, the second connecting portion, and the third connecting portion form a loop unit, and the plurality of loop units are arranged in a matrix along the first direction and the second direction.
[0039] According to a second aspect of this application, a display device is provided, comprising a camera module and a display panel as described in any of the above embodiments, wherein the camera module is disposed on the backlight side of the display panel and is disposed corresponding to the second display area.
[0040] In the display panel and display device of this application embodiment, by placing one of the first red light driving circuit and the first blue light driving circuit between any of the first green light driving circuit and the second effective pixel circuit, the second effective pixel circuit is moved away from the first green light driving circuit, thereby reducing the coupling effect of the second effective pixel circuit on the first green light driving circuit. Furthermore, since the proportion of green light emission brightness is the largest when displaying a white screen, reducing the coupling effect on the first green light driving circuit can improve the display effect of the white screen.
[0041] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description
[0042] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0043] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.
[0044] Figure 1 This is a top view of the display panel provided in an exemplary embodiment of this disclosure;
[0045] Figure 2 yes Figure 1 An enlarged schematic diagram of section N1;
[0046] Figure 3 yes Figure 1 A partial schematic diagram of the first sub-region;
[0047] Figure 4 This is an equivalent circuit diagram of the first pixel circuit and the second pixel circuit of the display panel provided in the exemplary embodiments of this disclosure;
[0048] Figure 5 yes Figure 4 Timing diagram of an equivalent circuit;
[0049] Figure 6 This is a cross-sectional view of the display panel provided in an exemplary embodiment of this disclosure;
[0050] Figure 7 yes Figure 2 A partially enlarged schematic diagram of the second display area;
[0051] Figure 8 This is a schematic diagram of the structure of a display device provided in an exemplary embodiment of this disclosure.
[0052] Explanation of reference numerals in the attached figures:
[0053] Display panel 100; First display area A1; Second display area A2; First light-emitting unit u1; Second light-emitting unit u2; First pixel circuit d1; Second pixel circuit d2; First red light-emitting device R1; First green light-emitting device G1; First blue light-emitting device B1; Second red light-emitting device R2; Second green light-emitting device G2; Second blue light-emitting device B2; First red light driving circuit dr1; First green light driving circuit dg1; First blue light driving circuit db1; First light-emitting device p1; Second light-emitting device p2; Second effective pixel circuit d21; Second redundant pixel circuit d22; First direction F1; Second direction F2; First sub-region A11; Second sub-region A12; Repeating unit 1a; First transistor T1; Second transistor T2; Third transistor T3; Fourth transistor T4; Fifth transistor T5; Sixth transistor T6; Seventh transistor T7; Eighth transistor T8; First capacitor C1; Second capacitor C2; First node Q1; Second node Q2; Third node Q3; Fourth node Q4; Positive voltage power supply signal VDD; Data signal DATA; Light emission control signal EM; First scan signal PS1; Second scan signal NS1; Third scan signal NS2; First reset signal Vi1; Second reset signal Vi2; Third reset signal Vi3; Substrate 101; First transparent conductive layer 111; Anode 121; Light-shielding layer 102; Buffer layer 103; First active layer 104; First insulating layer 131; First metal layer 141; Second insulating layer 132; Second metal layer 142; Third insulating layer 133; Second active layer 105; Fourth insulating layer 134; Third metal layer 143; Fifth insulating layer 135; Fourth metal layer 144; Sixth insulating layer 136; First planarization layer 151; Fifth metal layer 145; Second planarization layer 152; Sixth metal layer 146; Third planarization layer 15 3; Second transparent conductive layer 112; Fourth planarization layer 154; Third transparent conductive layer 113; Fifth planarization layer 155; Pixel definition layer 156; Connecting part 11; Base electrode 01; Connecting line 02; First connecting line 021; Second connecting line 022; Third connecting line 023; First part 02a; Middle part 02b; Second part 02c; First connecting part 11B; Second connecting part 11R; Third connecting part 11G; Loop unit xh; Second trace 12a; Third trace 13a; Adapter part 13c; Non-light-emitting stage st1; Light-emitting stage st2; Display device 1000; Camera module 200. Detailed Implementation
[0054] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.
[0055] exist Figure 1 and Figure 2 In the plan view, the first direction F1 may be a direction parallel to one side of the display panel 100, and may be, for example, the lateral direction of the display panel 100. The second direction F2 may be a direction parallel to the other side of the display panel 100, and may be the longitudinal direction of the display panel 100. In some embodiments, the first direction F1 and the second direction F2 may also intersect non-perpendicularly.
[0056] In addition, when the display panel 100 is not rectangular, the orientation of the first direction F1 and the second direction F2 are adjusted according to the actual situation.
[0057] Please refer to Figure 1 , Figure 2 and Figure 3 This application provides a display panel 100, including a first display area A1 and a second display area A2, wherein the first display area A1 is located on at least one side of the second display area A2.
[0058] Alternatively, the display panel 100 may be an organic light-emitting diode panel or a quantum dot light-emitting diode panel.
[0059] Both the first display area A1 and the second display area A2 are used to display images. The first display area A1 can be located near (or around) the second display area A2. Figure 1 and Figure 2 As shown, the first display area A1 may partially surround the second display area A2, but the implementation is not limited to this. The second display area A2 may be completely surrounded by the first display area A1.
[0060] Secondly, the second display area A2 has a high light transmittance, which allows external light to pass through the second display area A2 and enter the external camera module, enabling the camera module to perform the camera function.
[0061] Optionally, in some embodiments, the display panel 100 includes a first light-emitting unit u1, a second light-emitting unit u2, a first pixel circuit d1, and a second pixel circuit d2.
[0062] Multiple first light-emitting units u1 are disposed in the first display area A1. Each first light-emitting unit u1 includes a first red light-emitting device R1, a first green light-emitting device G1, and a first blue light-emitting device B1. Multiple first pixel circuits d1 are disposed in the first display area A1. Each first pixel circuit d1 includes a first red light driving circuit dr1 connected to the first red light-emitting device R1, a first green light driving circuit dg1 connected to the first green light-emitting device G1, and a first blue light driving circuit db1 connected to the first blue light-emitting device B1.
[0063] Multiple second light-emitting units u2 are disposed in a second display area A2, and the second display area A2 includes multiple second light-emitting devices p2. Multiple second pixel circuits d2 are disposed in a first display area A1. The multiple second pixel circuits d2 include a second effective pixel circuit d21, which is connected to and drives the second light-emitting devices p2 to emit light.
[0064] In the display panel 100 viewed from above, a plurality of first pixel circuits d1 are arranged along a first direction F1. In the first direction F1, any second effective pixel circuit d21 and its adjacent first green light driving circuit dg1 are separated by one of a first red light driving circuit dr1 and a first blue light driving circuit db1.
[0065] In the display panel 100 of this application embodiment, by placing one of the first red light driving circuit dr1 and the first blue light driving circuit db1 between any second effective pixel circuit d21 and the adjacent first green light driving circuit dg1, the second effective pixel circuit d21 is moved away from the first green light driving circuit dg1, thereby reducing the coupling effect of the second effective pixel circuit d21 on the first green light driving circuit dg1. Furthermore, since the proportion of green light emission brightness is the largest when displaying a white screen, reducing the coupling effect on the first green light driving circuit dg1 can improve the display effect of the white screen.
[0066] Alternatively, please refer to Figure 2 and Figure 3 In some embodiments, the first light-emitting unit u1 is a light-emitting pixel, and the second light-emitting unit u2 is another light-emitting pixel. The plurality of second light-emitting devices p2 include a second red light-emitting device R2, a second green light-emitting device G2, and a second blue light-emitting device B2, and the second light-emitting unit u2 includes a second red light-emitting device R2, a second green light-emitting device G2, and a second blue light-emitting device B2.
[0067] In other words, the first red light emitting device R1, the first green light emitting device G1, and the first blue light emitting device B1 constitute a pixel, and the second red light emitting device R2, the second green light emitting device G2, and the second blue light emitting device B2 also constitute a pixel.
[0068] Understandably, compared to SPR technology, the first light-emitting unit u1 and the second light-emitting unit u2 form a white image by arranging actual physical pixels, rather than by borrowing colors, which can improve the display effect.
[0069] It should be noted that the following description will use the example of a pixel (first light-emitting unit u1) consisting of a first red light-emitting device R1, a first green light-emitting device G1, and a first blue light-emitting device B1, and a pixel (second light-emitting unit u2) consisting of a second red light-emitting device R2, a second green light-emitting device G2, and a second blue light-emitting device B2, but it is not limited to this.
[0070] exist Figure 2 and Figure 3 In the first display area A1, a plurality of first light-emitting units u1 are arranged along a first direction F1 and along a second direction F2 intersecting the first direction F1. In the second display area A2, a plurality of second light-emitting units u2 are arranged along the first direction F1 and along the second direction F2.
[0071] That is, multiple first light-emitting units u1 are arranged in a matrix in the first display area A1, and multiple second light-emitting units u2 are also arranged in a matrix in the second display area A2.
[0072] In the entire display area, the first light-emitting unit u1 and the second light-emitting unit u2 are arranged in the same way, so that the pixel arrangement in the first display area A1 is the same as the pixel arrangement in the second display area A2.
[0073] Optionally, in some embodiments, the first display area A1 includes a first sub-area A11 and a second sub-area A12 connected together. In the first direction F1, the second sub-area A12 is located on one side or opposite side of the second display area A2, and the second sub-area A12 and the second display area A2 form a display combination area. The first sub-area A11 at least partially surrounds the outer periphery of the display combination area. A second effective pixel circuit d21 is disposed in the second sub-area A12.
[0074] The display panel 100 includes a plurality of repeating units 1a disposed in the first display area A1. Each repeating unit 1a includes a first red light driving circuit dr1, a first green light driving circuit dg1, and a first blue light driving circuit db1. In the second sub-area A12, in the first direction F1, any two adjacent second effective pixel circuits d21 are spaced apart by a repeating unit 1a. One side of a second effective pixel circuit d21 is adjacent to one of the first red light driving circuit dr1 and the first blue light driving circuit db1, and the other side of a second effective pixel circuit d21 is adjacent to the other of the first red light driving circuit dr1 and the first blue light driving circuit db1.
[0075] It is understandable that, since both the first light-emitting unit u1 and the second light-emitting unit u2 are actual pixel arrangements, the corresponding driver for the first light-emitting unit u1 includes a first red light driving circuit dr1, a first green light driving circuit dg1, and a first blue light driving circuit db1. Therefore, any second effective pixel circuit d21 can be inserted between adjacent first red light driving circuit dr1 and first blue light driving circuit db1.
[0076] Optionally, the repeating unit 1a may include three first pixel circuits d1, such as a first red light driving circuit dr1, a first green light driving circuit dg1, and a first blue light driving circuit db1. Such an arrangement can insert more second effective pixel circuits d21 in a certain area.
[0077] Optionally, in some embodiments, the repeating unit 1a may include 3n first pixel circuits d1, where n is an integer and n≥2. For example, the repeating unit 1a may include 2 first red light driving circuits dr1, 2 first green light driving circuits dg1, and 2 first blue light driving circuits db1, or the repeating unit 1a may include 3 first red light driving circuits dr1, 3 first green light driving circuits dg1, and 3 first blue light driving circuits db1.
[0078] Optionally, in some embodiments, the second sub-region A12 is located on the opposite side of the second display area A2 and forms a display combination area with the second display area A2, and the first sub-region A11 at least partially surrounds the outer periphery of the display combination area.
[0079] The second effective pixel circuit disposed in one second sub-region A12 among the plurality of second effective pixel circuits d21 constitutes a first part of the circuit. The second effective pixel circuit disposed in another second sub-region A12 among the plurality of second effective pixel circuits d21 constitutes a second part of the circuit. The first part of the circuit is connected to the second light-emitting device p2 in the second display area A2 near the first part of the circuit, and the second part of the circuit is connected to the second light-emitting device p2 in the second display area A2 near the second part of the circuit.
[0080] It is understandable that the second light-emitting device p2 in the second display area A2 is divided into left and right parts. The second light-emitting device p2 in the left area is driven by the first part of the circuit (second effective pixel circuit d21) located in the second sub-area A12 on the left, and the second light-emitting device p2 in the right area is driven by the second part of the circuit (second effective pixel circuit d21) located in the second sub-area A12 on the right. Compared with driving the second light-emitting device p2 of the entire second display area A2 with only one side of the second effective pixel circuit d21, this design can reduce the risk of light emission delay of the far-end second light-emitting device p2, thereby improving the light emission uniformity of the second display area A2. Secondly, it can reduce the length of the connecting trace and the wiring space requirements between the second effective pixel circuit d21 and the second light-emitting device p2, thereby improving the light transmittance of the second display area A2.
[0081] Optionally, in some embodiments, the plurality of second pixel circuits d2 include a plurality of second redundant pixel circuits d22, which are configured not to drive any light-emitting devices. The second redundant pixel circuits d22 are disposed in the first sub-region A11.
[0082] In the display panel 100 viewed from above, in the first direction F1, one of the first red light driving circuit dr1 and the first blue light driving circuit db1 is spaced between any first green light driving circuit dg1 and the second redundant pixel circuit d22.
[0083] It is important to understand that the second redundant pixel circuit d22 is set in the first sub-area A11 so that the pixel circuit arrangement of the first sub-area A11 is similar to that of the second sub-area A12, thereby improving the uniform light emission effect of the first display area A1. Secondly, the second redundant pixel circuit d22 cannot drive any light-emitting device and is not connected to any light-emitting device. However, to avoid the second redundant pixel circuit d22 from floating and to further improve the uniformity of light emission across the entire display area, the connection between the second redundant pixel circuit d22 and its surrounding environment needs to be similar to that of the second effective pixel circuit d21. Therefore, the second redundant pixel circuit d22 will still be connected to relevant control signals. Thus, the second redundant pixel circuit d22 is kept away from the first green light driving circuit dg1, reducing the impact of the second redundant pixel circuit d22 on the first green light driving circuit dg1, thereby providing a white screen display effect.
[0084] Of course, in some embodiments, the second redundant pixel circuit d22 may not be connected to any control signal, allowing it to float completely. It should be noted that this is only necessary if the second redundant pixel circuit d22 cannot drive any light-emitting device.
[0085] Optionally, in some embodiments, in the first direction F1, the arrangement period of the second redundant pixel circuit d22 and the first pixel circuit d1 is the same as the arrangement period of the second effective pixel circuit d21 and the first pixel circuit d1.
[0086] It is understandable that the arrangement period of the second redundant pixel circuit d22 and the first pixel circuit d1 is the same as the arrangement period of the second effective pixel circuit d21 and the first pixel circuit d1, so that the arrangement pattern of the pixel circuit of the first sub-region A11 is further similar to the arrangement pattern of the pixel circuit of the second sub-region A12, thereby improving the light emission uniformity of the first display area A1.
[0087] Optionally, in some embodiments, in the first display area A1, in the first direction F1, every six consecutive first pixel circuits d1 constitute a repeating unit 1a.
[0088] In the first direction F1 of the first sub-region A11, a second redundant pixel circuit d22 and a repeating unit 1a are arranged alternately. In the first direction F1 of the second sub-region A12, a second effective pixel circuit d21 and a repeating unit 1a are arranged alternately.
[0089] It is understood that in this embodiment, six first pixel circuits d1 are equipped with one second pixel circuit d2. Since there are five gap spaces between the six first pixel circuits d1, the repeating unit 1a has a relatively spacious compressible space, that is, there is more space to insert the second pixel circuit d2, which reduces the difficulty of inserting the second pixel circuit d2.
[0090] Optionally, in some embodiments, the repeating unit 1a includes two first red light driving circuits dr1, two first green light driving circuits dg1, and two first blue light driving circuits db1. In the first direction F1, the second and fifth pixel circuits are the first green light driving circuits dg1, the first and fourth pixel circuits are one of the first red light driving circuits dr1 and the first blue light driving circuits db1, and the third and sixth pixel circuits are the other of the first red light driving circuits dr1 and the first blue light driving circuits db1.
[0091] In the first direction F1 of the first sub-region A11, a second redundant pixel circuit d22 is disposed between the first red light driving circuit dr1 and the first blue light driving circuit db1. In the first direction F1 of the second sub-region A12, a second effective pixel circuit d21 is disposed between the first red light driving circuit dr1 and the first blue light driving circuit db1.
[0092] It is understandable that the repeating unit 1a places the first green light driving circuit dg1 inside in order to prevent the first green light driving circuit dg1 from getting close to the second pixel circuit d2 and improve the display effect of the white screen.
[0093] Optionally, in some embodiments, a second effective pixel circuit d21 is connected to at least two second light-emitting devices p2 that emit the same color light.
[0094] It is understandable that by using a second effective pixel circuit d21 to connect at least two second light-emitting devices p2 that emit the same color light, the number of second effective pixel circuits d21 and the corresponding wiring connected to the second light-emitting devices p2 in the second display area A2 can be reduced. This can not only improve the light transmittance of the second display area A2, but also reduce the range of the second sub-area A12 and reduce the risk of increased impedance due to excessively long wiring.
[0095] In the first display area A1, each first red light-emitting device R1 is connected to a first pixel circuit d1, each first green light-emitting device G1 is connected to a first pixel circuit d1, and each first blue light-emitting device B1 is connected to a first pixel circuit d1. That is, the first light-emitting devices p1 in the first display area A1 adopt a one-to-one driving method.
[0096] It should be noted that the first red light emitting device R1, the first green light emitting device G1, and the first blue light emitting device B1 are all the same as the first light emitting device p1.
[0097] Please refer to Figure 4 In some embodiments, the first pixel circuit d1 and the second pixel circuit d2 both include a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a first capacitor C1, and a second capacitor C2.
[0098] The first transistor T1 is a driving transistor. Its gate is connected to the first node Q1, its input is connected to the second node Q2, and its output is connected to the third node Q3. One end of the first capacitor C1 is connected to the first node Q1, and the other end is connected to a positive voltage power supply signal VDD. One end of the second capacitor C2 is connected to the first node Q1, and the other end is connected to the gate of the second transistor T2. The gate of the second transistor T2 is connected to the first scan signal PS1, its input is connected to the data signal DATA, and its output is connected to the second node Q2.
[0099] The gate of the third transistor T3 is connected to the second scan signal NS1, the input of the third transistor T3 is connected to the first node Q1, and the output of the third transistor T3 is connected to the third node Q3. The gate of the fourth transistor T4 is connected to the third scan signal NS2, the input of the fourth transistor T4 is connected to the first reset signal Vi1, and the output of the fourth transistor T4 is connected to the third node Q3.
[0100] Among them, the third transistor T3 and the fourth transistor T4 are N-type thin-film transistors.
[0101] It is understandable that the first pixel circuit d1 and the second pixel circuit d2 use N-type third transistor T3 and fourth transistor T4 to connect to the first node Q1 in order to reduce the risk of leakage current in the first node Q1, thereby enabling the first pixel circuit d1 and the second pixel circuit d2 to support low refresh rate and achieve power saving effect.
[0102] Optionally, both the first pixel circuit d1 and the second pixel circuit d2 are 8T2C circuit structures. The two circuit structures are the same, and the control signals connected to them can be the same or different.
[0103] Optionally, the first pixel circuit d1 and the second pixel circuit d2 further include a fifth transistor T5, a sixth transistor T6, a seventh transistor T7, and an eighth transistor T8.
[0104] The gate of the fifth transistor T5 is connected to the light-emitting control signal EM, the input of the fifth transistor T5 is connected to the positive voltage power supply signal VDD, and the output of the fifth transistor T5 is connected to the second node Q2. The gate of the sixth transistor T6 is connected to the light-emitting control signal EM, the input of the sixth transistor T6 is connected to the third node Q3, and the output of the sixth transistor T6 is connected to the fourth node Q4.
[0105] The gate of the seventh transistor T7 is connected to the fourth scan signal PS2, the input of the seventh transistor T7 is connected to the second reset signal Vi2, and the output of the seventh transistor T7 is connected to the fourth node Q4. The anode 121 of the light-emitting device EL is connected to the fourth node Q4. The gate of the eighth transistor T8 is connected to the fourth scan signal PS2, the input of the eighth transistor T8 is connected to the third reset signal Vi3, and the output of the eighth transistor T8 is connected to the second node Q2.
[0106] The first pixel circuit d1 is connected to the first light-emitting device p1, and the second pixel circuit d2 is connected to the second light-emitting device p2.
[0107] Optionally, in some embodiments, since the second effective pixel circuit d21 drives at least two second light-emitting devices p2, the voltage of the positive voltage power supply signal VDD connected to the second effective pixel circuit d21 is set to be greater than the voltage of the positive voltage power supply signal VDD connected to the first pixel circuit d1, so as to improve the light emission brightness of the second light-emitting device p2.
[0108] Optionally, in some embodiments, the voltage of the positive voltage power supply signal VDD connected to the second effective pixel circuit d21 may be equal to the voltage of the positive voltage power supply signal VDD connected to the first pixel circuit d1, and the first pixel circuit d1 and the second effective pixel circuit d21 may be connected by the same power supply line.
[0109] Optionally, the first transistor T1, the second transistor T2, the fifth transistor T5, the sixth transistor T6, the seventh transistor T7, and the eighth transistor T8 can each be P-type or N-type.
[0110] Optionally, the first transistor T1 to the eighth transistor T8 are thin-film transistors, but not limited thereto.
[0111] Among them, Figure 4 In this example, we will use the first transistor T1, the second transistor T2, the fifth transistor T5, the sixth transistor T6, the seventh transistor T7, and the eighth transistor T8 as examples, all of which are P-type transistors.
[0112] Please refer to Figure 5 The timing of both the first pixel circuit d1 and the second effective pixel circuit d21 includes a non-light-emitting stage st1 and a light-emitting stage st2. During the light-emitting stage st2, the fifth transistor T5 and the sixth transistor T6 are at a low level, and are in the on state. The first node Q1 is at a low potential, and the first transistor T1 is in the on state. The second transistor T2, the seventh transistor T7, and the eighth transistor T8 are connected to a high level signal, and are in the off state. The third transistor T3 and the fourth transistor T4 are connected to a low level signal, and are in the off state.
[0113] During the non-light-emitting stage st1, the fifth transistor T5 and the sixth transistor T6 are always connected to a high-level signal, and the fifth transistor T5 and the sixth transistor T6 are in the off state.
[0114] During the first time period of the non-light-emitting stage st1, the seventh transistor T7 and the eighth transistor T8 are connected to a low-level signal and are in the on state. The second node Q2 is reset by the third reset signal Vi3, and the fourth node Q4 is reset by the second reset signal Vi2.
[0115] During the second period of the non-light-emitting phase st1, the fourth transistor T4 and the third transistor T3 are sequentially given high-level signals, and are turned on sequentially. During the period when the third transistor T3 and the fourth transistor T4 are simultaneously turned on, the first node Q1 and the third node Q3 are reset by the first reset signal Vi1. Subsequently, the fourth transistor T4 is turned off, while the third transistor T3 remains on. Then, the second transistor T2 is given a low-level signal and is turned on, and the data signal DATA is written to the second node Q2. Specifically, when the third transistor T3 is turned on (connecting the first node Q1 and the third node Q3) and the second transistor T2 is turned on (writing the data signal DATA), the gate and source of the first transistor T1 are pulled to nearly the same potential (through internal node charging), thereby storing the threshold voltage Vth information in the first capacitor C1.
[0116] During the third period of the non-light-emitting stage st1, the seventh transistor T7 and the eighth transistor T8 are connected to a low-level signal and are in the on state. The second node Q2 is reset again by the third reset signal Vi3, and the fourth node Q4 is reset again by the second reset signal Vi2.
[0117] Understandably, during the first period of the non-emission phase (st1), the second node Q2 and the fourth node Q4 are reset to eliminate residual charge from the previous frame's emission, preventing residual charge from interfering with the current frame's writing and threshold compensation processes, and preventing voltage fluctuations in the fourth node Q4, ensuring the light-emitting device is completely turned off. During the third period of the non-emission phase (st1), the second node Q2 and the fourth node Q4 are reset a second time. After the data signal (DATA) is written and threshold compensation is completed, the additional charge generated by coupling is cleared, ensuring accurate voltages for the second node Q2 and the fourth node Q4 at the start of the emission phase (st2), thus improving the brightness uniformity of low grayscale levels.
[0118] Please refer to Figure 6 Optionally, in some embodiments, the display panel 100 includes a substrate 101, a first transparent conductive layer 111, and an anode 121. The first transparent conductive layer 111 is disposed on the substrate 101, and the anode 121 is disposed directly on the surface of the first transparent conductive layer 111 away from the substrate 101.
[0119] It is understandable that the anode 121 can be formed directly on the first transparent conductive layer 111 by using a single photomask, thus saving on the photomask.
[0120] Secondly, the first transparent conductive layer 111 includes a plurality of connecting portions 11. The connecting portions 11 are located in the second display area A2. The connecting portion 11 includes a base electrode 01 and a connecting line 02. One end of the connecting line 02 is connected to a base electrode 01, and the other end of the connecting line 02 is connected to another base electrode 01. An anode 121 is correspondingly connected to a base electrode 01.
[0121] Understandably, multiple connecting portions 11 are made of transparent conductive material to improve the light transmittance of the second display area A2. Additionally, a connecting portion 11 connects two anodes 121 to enable a second effective pixel circuit d21 to drive two second light-emitting devices p2.
[0122] Optionally, in some embodiments, the display panel 100 further includes, sequentially disposed on the substrate 101, a light-shielding layer 102, a buffer layer 103, a first active layer 104, a first insulating layer 131, a first metal layer 141, a second insulating layer 132, a second metal layer 142, a third insulating layer 133, a second active layer 105, a fourth insulating layer 134, a third metal layer 143, a fifth insulating layer 135, a fourth metal layer 144, a sixth insulating layer 136, a first planarization layer 151, a fifth metal layer 145, a second planarization layer 152, a sixth metal layer 146, a third planarization layer 153, a second transparent conductive layer 112, a fourth planarization layer 154, a third transparent conductive layer 113, a fifth planarization layer 155, and a pixel definition layer 156. The first transparent conductive layer 111 is disposed on the side of the fifth planarization layer 155 away from the substrate 101, and the pixel definition layer 156 is disposed on the side of the anode 121 away from the substrate 101.
[0123] The first active layer 104 can be made of silicon-based semiconductor, such as polycrystalline silicon. The second active layer 105 can be made of metal oxide semiconductor, such as IGZO or IGZTO.
[0124] Optionally, the channel material of the third transistor T3 and the fourth transistor T4 is metal-oxide semiconductor, and the channel material of the other transistors (T1-T2 and T5-T8) is silicon-based semiconductor.
[0125] The materials of the first transparent conductive layer 111, the second transparent conductive layer 112, and the third transparent conductive layer 113 are each one of ITO and IZO.
[0126] The input and output terminals of the first transistor T1 to the eighth transistor T8 are all formed on the fourth metal layer 144.
[0127] Please refer to Figure 7Optionally, in some embodiments, the multiple connecting lines 02 include a first connecting line 021. The first connecting line 021 includes a first part 02a, a middle part 02b, and a second part 02c. The first part 02a is connected to a base electrode 01, the middle part 02b is connected between the first part 02a and the second part 02c, and the second part 02c is connected to another base electrode 01. The middle part 02b is a curved loop.
[0128] Understandably, the middle part 02b is a curved loop, which can increase the curve length of the first connecting line 021 and thus improve the diffraction effect of ambient light, allowing the camera module to capture more ambient light; secondly, the curved loop connects the first part 02a and the second part 02c in parallel, which can reduce the impedance of the first connecting line 021.
[0129] Optionally, the middle portion 02b is a circular coil. In the first direction F1, the outer diameter of the middle portion 02b is greater than the maximum width of the base electrode 01, so that the curve length of the middle portion 02b accounts for a larger proportion, further improving the diffraction effect of ambient light and reducing impedance.
[0130] In some embodiments, the middle portion 02b may also be a coil of other shapes, such as an elliptical coil or an irregularly curved coil.
[0131] Optionally, each connection portion 11 is connected to two anodes 121 to drive two second light-emitting devices p2 to emit light. A first connection line 021 connects two base electrodes 01 to form a connection portion 11 (first connection portion 11B). Multiple connection lines 02 also include a second connection line 022 and a third connection line 023. The second connection line 022 connects two base electrodes 01 to form another connection portion 11 (second connection portion 11R). The third connection line 023 connects two base electrodes 01 to form yet another connection portion 11 (third connection portion 11G). That is, the multiple connection portions 11 include a first connection portion 11B, a second connection portion 11R, and a third connection portion 11G.
[0132] Optionally, both the second connecting line 022 and the third connecting line 023 are curved to improve the diffraction effect of ambient light and thus enable the camera module to capture more light.
[0133] The first connecting part 11B is connected to one of the second red light emitting device R2, the second green light emitting device G2, and the second blue light emitting device B2; the second connecting part 11R is connected to another of the second red light emitting device R2, the second green light emitting device G2, and the second blue light emitting device B2; and the third connecting part 11G is connected to the last of the second red light emitting device R2, the second green light emitting device G2, and the second blue light emitting device B2.
[0134] For example, the first connecting part 11B connects to two second blue light emitting devices B2, the second connecting part 11R connects to two second red light emitting devices R2, and the third connecting part 11G connects to two second green light emitting devices G2.
[0135] In the second direction F2, multiple second blue light-emitting devices B2 are arranged in a pure blue light-emitting device column, while second red light-emitting devices R2 and second green light-emitting devices G2 are arranged alternately. Based on this, the second connecting line 022 bypasses the second green light-emitting device G2, and the third connecting line 023 bypasses the second red light-emitting device R2. The first portion 02a and the second portion 02c of the first connecting line 021 extend along the second direction F2 to reduce the length of the first connecting line 021 and lower the impedance.
[0136] Optionally, in some embodiments, the first connecting portion 11B, the second connecting portion 11R, and the third connecting portion 11G are arranged alternately in the first direction F1. That is, a first connecting portion 11B, a second connecting portion 11R, and a third connecting portion 11G form a loop unit xh, and a plurality of loop units xh are arranged in a matrix along the first direction F1 and the second direction F2.
[0137] The second transparent conductive layer 112 includes multiple second traces 12a. The third transparent conductive layer 113 includes multiple third traces 13a and multiple transition portions 13c. Both the second traces 12a and the third traces 13a extend from the first display area A1 to the second display area A2. Multiple transition portions 13c are disposed in the second display area A2. Specifically, each second trace 12a is connected to a second effective pixel circuit d21 and a transition portion 13c, and each transition portion 13c is connected to a connecting portion 11. Each third trace 13a is connected to a second effective pixel circuit d21 and a connecting portion 11.
[0138] In the second direction F2, the second trace 12a and the third trace 13a are arranged alternately. It can be understood that by setting the second trace 12a and the third trace 13a on different layers, the spacing between them can be reduced in the second direction F2, saving wiring space.
[0139] In the first direction F1, an odd-numbered connection portion 11 is connected to a second trace 12a, and an even-numbered connection portion 11 is connected to a third trace 13a. Alternatively, in the first direction F1, an even-numbered connection portion 11 is connected to a second trace 12a, and an odd-numbered connection portion 11 is connected to a third trace 13a.
[0140] Please refer to Figure 8According to a second aspect disclosed in this application, a display device 1000 is provided, which includes a camera module 200 and a display panel 100 as described in any of the above embodiments. The camera module 200 is disposed on the backlight side of the display panel 100 and is disposed corresponding to the second display area A2.
[0141] It should be noted that the structure of the display panel 100 of the display device 1000 in this application embodiment is similar to or the same as the structure of the display panel 100 of any of the above embodiments. For details, please refer to... Figures 1 to 7 The relevant explanations will not be repeated here.
[0142] In the display device 1000 of this application embodiment, by placing one of the first red light driving circuit dr1 and the first blue light driving circuit db1 between any first green light driving circuit dg1 and the second effective pixel circuit d21, the second effective pixel circuit d21 is moved away from the first green light driving circuit dg1, thereby reducing the coupling effect of the second effective pixel circuit d21 on the first green light driving circuit dg1. Furthermore, since the proportion of green light emission brightness is the largest when displaying a white screen, reducing the coupling effect on the first green light driving circuit dg1 can improve the display effect of the white screen.
[0143] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0144] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0145] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.
[0146] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.
Claims
1. A display panel, comprising a first display area and a second display area, wherein the first display area is located on at least one side of the second display area, characterized in that, The display panel includes: Multiple first light-emitting units are disposed in the first display area, and the first light-emitting unit includes a first red light-emitting device, a first green light-emitting device, and a first blue light-emitting device; Multiple second light-emitting units are disposed in the second display area, and the second display area includes multiple second light-emitting devices; Multiple first pixel circuits are disposed in the first display area. The multiple first pixel circuits include a first red light driving circuit connected to the first red light emitting device, a first green light driving circuit connected to the first green light emitting device, and a first blue light driving circuit connected to the first blue light emitting device. Multiple second pixel circuits are disposed in the first display area, and the multiple second pixel circuits include second effective pixel circuits. The second effective pixel circuits are connected to and drive the second light-emitting device to emit light. In the display panel viewed from above, a plurality of first pixel circuits are arranged along a first direction. In the first direction, one of the first red light driving circuit and the first blue light driving circuit is spaced apart between any second effective pixel circuit and the first green light driving circuit connected thereto.
2. The display panel according to claim 1, characterized in that, The first display area includes a first sub-area and a second sub-area connected together. In the first direction, the second sub-area is located on one side or opposite side of the second display area. The second sub-area and the second display area form a display combination area. The first sub-area at least partially surrounds the outer periphery of the display combination area. The second effective pixel circuit is disposed in the second sub-area. The display panel includes a plurality of repeating units disposed in the first display area. The repeating unit includes a first red light driving circuit, a first green light driving circuit, and a first blue light driving circuit. In the first direction in the second sub-area, any two adjacent second effective pixel circuits are spaced apart by one of the repeating units. One side of a second effective pixel circuit is adjacent to one of the first red light driving circuit and the first blue light driving circuit, and the other side of the second effective pixel circuit is adjacent to the other of the first red light driving circuit and the first blue light driving circuit.
3. The display panel according to claim 2, characterized in that, The repeating unit includes two first red light driving circuits, two first green light driving circuits, and two first blue light driving circuits. In the first direction, the second and fifth pixel circuits are first green light driving circuits, the first and fourth pixel circuits are one of the first red light driving circuits and the first blue light driving circuits, and the third and sixth pixel circuits are the other of the first red light driving circuits and the first blue light driving circuits.
4. The display panel according to claim 3, characterized in that, The second sub-area is located on the opposite side of the second display area. The second effective pixel circuit disposed in one of the multiple second effective pixel circuits in the second sub-area is a first part circuit, and the second effective pixel circuit disposed in another of the multiple second effective pixel circuits in the second sub-area is a second part circuit. The first part circuit is connected to the second light-emitting device in the second display area that is close to the first part circuit, and the second part circuit is connected to the second light-emitting device in the second display area that is close to the second part circuit.
5. The display panel according to claim 4, characterized in that, The plurality of second pixel circuits includes a plurality of second redundant pixel circuits, the second redundant pixel circuits being configured not to drive any light-emitting devices, and the second redundant pixel circuits being disposed in the first sub-region; In the display panel viewed from above, in the first direction, one of the first red light driving circuit and the first blue light driving circuit is spaced apart between any of the first green light driving circuits and the second redundant pixel circuits.
6. The display panel according to claim 5, characterized in that, In the first direction, the arrangement period of the second redundant pixel circuit and the first pixel circuit is the same as the arrangement period of the second effective pixel circuit and the first pixel circuit.
7. The display panel according to claim 6, characterized in that, In the first direction of the first sub-region, a second redundant pixel circuit and a repeating unit are alternately arranged; in the first direction of the second sub-region, a second effective pixel circuit and a repeating unit are alternately arranged.
8. The display panel according to claim 7, characterized in that, In the first direction of the first sub-region, a second redundant pixel circuit is disposed between the first red light driving circuit and the first blue light driving circuit; in the first direction of the second sub-region, a second effective pixel circuit is disposed between the first red light driving circuit and the first blue light driving circuit.
9. The display panel according to claim 7, characterized in that, Each of the second effective pixel circuits is connected to at least two second light-emitting devices that emit light of the same color.
10. The display panel according to any one of claims 1-9, characterized in that, The first light-emitting unit is a light-emitting pixel, and the second light-emitting unit is another light-emitting pixel. The second light-emitting unit includes a second red light-emitting device, a second green light-emitting device, and a second blue light-emitting device. In the first display area, a plurality of first light-emitting units are arranged along the first direction and along a second direction intersecting the first direction; in the second display area, a plurality of second light-emitting units are arranged along the first direction and along a second direction intersecting the second direction.
11. The display panel according to claim 10, characterized in that, Both the first pixel circuit and the second pixel circuit include a first transistor, a second transistor, a third transistor, a fourth transistor, a first capacitor, and a second capacitor; The first transistor is a driving transistor. The gate of the first transistor is connected to the first node, the input of the first transistor is connected to the second node, the output of the first transistor is connected to the third node, one end of the first capacitor is connected to the first node, and the other end of the first capacitor is connected to a positive voltage power supply signal. One end of the second capacitor is connected to the first node, and the other end of the second capacitor is connected to the gate of the second transistor. The gate of the second transistor is connected to a first scan signal, the input of the second transistor is connected to a data signal, and the output of the second transistor is connected to the second node. The gate of the third transistor is connected to the second scan signal, the input of the third transistor is connected to the first node, the output of the third transistor is connected to the third node, the gate of the fourth transistor is connected to the third scan signal, the input of the fourth transistor is connected to the first reset signal, and the output of the fourth transistor is connected to the third node. The third transistor and the fourth transistor are N-type thin-film transistors.
12. The display panel according to claim 11, characterized in that, The display panel includes a substrate, a first transparent conductive layer, and an anode. The first transparent conductive layer is disposed on the substrate, and the anode is directly disposed on the surface of the first transparent conductive layer away from the substrate. The first transparent conductive layer includes multiple connecting portions located in the second display area. Each connecting portion includes a base electrode and a connecting line. One end of the connecting line is connected to one of the base electrodes, and the other end of the connecting line is connected to another base electrode. A corresponding anode is connected to one of the base electrodes.
13. The display panel according to claim 12, characterized in that, The display panel further includes a second transparent conductive layer and a third transparent conductive layer. The first transparent conductive layer, the second transparent conductive layer and the third transparent conductive layer are disposed in different layers from each other, and the third transparent conductive layer is disposed between the first transparent conductive layer and the second transparent conductive layer. The second transparent conductive layer includes multiple second traces, and the third transparent conductive layer includes multiple third traces and multiple transition portions. Both the second traces and the third traces extend from the first display area to the second display area. The multiple transition portions are disposed in the second display area. Specifically, one second trace is connected to one second effective pixel circuit and one transition portion, one transition portion is connected to one connection portion, and one third trace is connected to another second effective pixel circuit and another connection portion. In the second direction, the second and third traces are arranged alternately.
14. The display panel according to claim 12, characterized in that, The plurality of connecting lines include a first connecting line, the first connecting line including a first part, a middle part and a second part, the first part being connected to one of the base electrodes, the middle part being connected between the first part and the second part, and the second part being connected to another of the base electrodes; The middle part is a curved loop.
15. The display panel according to claim 12, characterized in that, The plurality of connecting portions include a first connecting portion, a second connecting portion and a third connecting portion, wherein the first connecting portion connects to two second blue light emitting devices, the second connecting portion connects to two second red light emitting devices, and the third connecting portion connects to two second green light emitting devices; The first connecting portion, the second connecting portion, and the third connecting portion form a loop unit, and the plurality of loop units are arranged in a matrix along the first direction and the second direction.
16. A display device, characterized in that, It includes a camera module and a display panel as described in any one of claims 1-15, wherein the camera module is disposed on the backlight side of the display panel and is disposed corresponding to the second display area.
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