Display panel and display device

Abstract

The invention relates to a display panel and a display device. The display panel comprises a transparent display area, wiring areas, a transition display area and a conventional display area, the transition display area at least partially surrounds the transparent display area, and the wiring areas are located between the transparent display area and the transition display area and between the transition display area and the conventional display area. The conventional display area at least partially surrounds the transition display area and the transparent display area, and the light transmittance of the transparent display area is greater than that of the conventional display area; in the first direction, the transition display area is located between the first conventional display area and the transparent display area; in the second direction, the stage number of the pixel driving circuits in the first conventional display area is the first stage number, and the stage number of the pixel driving circuits in the transition display area is the second stage number; the series difference between the first series and the second series is smaller than a preset series, and the preset series is equal to or smaller than 1 / 2 of the first series. Therefore, a layout space is reserved for the transparent display area, and the display effect of the display panel is optimized.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] In electronic devices including display panels, the pursuit of a high screen-to-body ratio with a better visual experience has become one of the current trends in the development of display technology. A transparent display area can be arranged in the display panel, and sensors such as image acquisition devices can be arranged under the screen of the transparent display area to better achieve a full-screen design.

[0003] In the related art, for a display panel with a transparent display area, the pixel driving circuit of a display panel with a lower PPI (Pixels Per Inch, pixel density) is generally compressed to leave a transparent display area, while for a display panel with a high PPI, its pixel driving circuit cannot be compressed any further. If the pixel driving circuit in the transitional display area is deleted, so that the number of pixel driving circuits in the transitional display area differs too much from that in the regular display area, the display difference between the transitional display area and the regular display area will be too large, causing problems such as color cast on the display panel. Summary of the invention

[0004] In order to solve the above technical problems, the present disclosure provides a display panel and a display device, which reserve layout space for a transparent display area and optimize the display effect of the display panel.

[0005] In a first aspect, the present disclosure provides a display panel, comprising:

[0006] A transparent display area, a wiring area, a transition display area and a regular display area, wherein the transition display area at least partially surrounds the transparent display area, the regular display area at least partially surrounds the transition display area and the transparent display area, the light transmittance of the transparent display area is greater than the light transmittance of the regular display area, and the wiring area is located between the transparent display area and the transition display area, and between the transition display area and the regular display area;

[0007] A pixel driving circuit and a light-emitting element electrically connected to the pixel driving circuit, wherein the pixel driving circuit is arranged in the transition display area and the regular display area, and the light-emitting element is arranged in the transparent display area, the wiring area, the transition display area, and the regular display area;

[0008] The conventional display area includes a first conventional display area; along a first direction, the transitional display area is located between the first conventional display area and the transparent display area; in a second direction, the number of stages of the pixel driving circuits in the first conventional display area is a first number, and the number of stages of the pixel driving circuits in the transitional display area is a second number; the first direction is the direction from the transitional display area to the transparent display area, and the second direction intersects with the first direction;

[0009] The difference between the first and second levels is smaller than a preset level, and the preset level is equal to or smaller than 1 / 2 of the first level.

[0010] In a second aspect, the present disclosure further provides a display device, comprising the display panel provided in the first aspect.

[0011] Compared with the prior art, the technical solution provided by the present invention has the following advantages:

[0012] In a display panel and a display device provided by the present disclosure, by setting the difference between the first level and the second level to be smaller than the preset level, the level of the pixel driving circuit in the first conventional display area is made close to the level of the pixel driving circuit in the transition display area, thereby avoiding the problem of color cast of the display panel caused by the transition display area and the conventional display area due to excessive difference in the level of the pixel driving circuit in the transition display area and the level of the pixel driving circuit in the conventional display area in the second direction, which not only leaves layout space for the transparent display area, but also improves the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 A schematic diagram of a top view structure of a display panel provided in an embodiment of the present disclosure;

[0016] Figure 2 A schematic diagram of a partial structure of a display panel provided in an embodiment of the present disclosure;

[0017] Figure 3 A schematic diagram of a partial structure of a display panel provided in an embodiment of the present disclosure;

[0018] Figure 4 A schematic diagram of a partial structure of another display panel provided in an embodiment of the present disclosure;

[0019] Figure 5 A schematic diagram of a partial structure of another display panel provided in an embodiment of the present disclosure;

[0020] Figure 6 A schematic diagram of a partial structure of another display panel provided in an embodiment of the present disclosure;

[0021] Figure 7 A schematic diagram of a partial structure of another display panel provided by an embodiment of the present disclosure;

[0022] Figure 8 A schematic diagram of a partial structure of another display panel provided in an embodiment of the present disclosure;

[0023] Fig. 9 for Figure 8 A partial enlarged schematic diagram of the middle area B1;

[0024] Fig.10 A schematic diagram of the structure of a pixel driving circuit in a transitional display area provided by an embodiment of the present disclosure;

[0025] Fig.11 A schematic diagram of the structure of a pixel driving circuit in a conventional display area provided by an embodiment of the present disclosure;

[0026] Fig.12 A schematic diagram of a circuit structure of a pixel driving circuit provided in an embodiment of the present disclosure;

[0027] Fig.13 A schematic diagram of a cross-sectional structure of a display panel provided in an embodiment of the present disclosure;

[0028] Fig.14 A schematic diagram of the planar structure of a bottom shielding metal layer of a driving repeating unit provided in an embodiment of the present disclosure;

[0029] Fig.15 A schematic diagram of the planar structure of a first active layer of a driving repeating unit provided in an embodiment of the present disclosure;

[0030] Fig.16 A schematic diagram of the planar structure of a first metal layer of a driving repeating unit provided in an embodiment of the present disclosure;

[0031] Fig.17 A schematic diagram of the planar structure of a capacitor metal layer of a driving repeating unit provided in an embodiment of the present disclosure;

[0032] Fig.18A schematic diagram of the planar structure of a second active layer of a driving repeating unit provided in an embodiment of the present disclosure;

[0033] Fig.19 A schematic diagram of the planar structure of a second metal layer of a driving repeating unit provided in an embodiment of the present disclosure;

[0034] Fig. 20 A schematic diagram of the planar structure of a third metal layer of a driving repeating unit provided in an embodiment of the present disclosure;

[0035] Fig.21 A schematic diagram of the planar structure of a first planarization layer of a driving repeating unit provided in an embodiment of the present disclosure;

[0036] Fig. 22 A schematic diagram of the planar structure of a fourth metal layer of a driving repeating unit provided in an embodiment of the present disclosure;

[0037] Fig.23 A schematic diagram of a planar structure of a second planarization layer provided in an embodiment of the present disclosure;

[0038] Fig.24 A schematic diagram of a planar structure of a first conductive layer provided in an embodiment of the present disclosure;

[0039] Fig.25 A schematic diagram of a planar structure of a third planarization layer provided in an embodiment of the present disclosure;

[0040] Fig.26 A schematic diagram of a planar structure of a second conductive layer provided in an embodiment of the present disclosure;

[0041] Fig. 27 A schematic diagram of a planar structure of a fourth planarization layer provided in an embodiment of the present disclosure;

[0042] Fig.28 A schematic diagram of a planar structure of a third conductive layer provided in an embodiment of the present disclosure;

[0043] Fig.29 A schematic diagram of a partial structure of another display panel provided in an embodiment of the present disclosure;

[0044] Fig.30 for Fig.29 A partial enlarged schematic diagram of the middle area B2;

[0045] Fig.31 A schematic diagram of a planar structure of a power signal line provided in an embodiment of the present disclosure;

[0046] Fig.32 A schematic diagram of a cross-sectional structure of a display panel provided in an embodiment of the present disclosure;

[0047] Fig.33 A schematic diagram of a cross-sectional structure of a display panel provided in an embodiment of the present disclosure;

[0048] Fig.34 for Fig.29 Another partial enlarged schematic diagram of the middle area B2;

[0049] Fig.35 A schematic diagram of a partial structure of another display panel provided in an embodiment of the present disclosure;

[0050] Fig.36 A schematic diagram of the structure of a light-emitting repeating unit provided in an embodiment of the present disclosure;

[0051] Fig.37 for Fig.29 A partial enlarged schematic diagram of the middle area B3;

[0052] Fig.38 A schematic diagram of a film layer of a light-emitting repeating unit provided in an embodiment of the present disclosure;

[0053] Fig.39 A schematic diagram of the structure of a driving repeating unit provided in an embodiment of the present disclosure;

[0054] Fig.40 A schematic diagram of a film structure of a light-emitting repeating unit provided in an embodiment of the present disclosure;

[0055] Fig.41 A schematic diagram of the film layer structure from the transition display area to the transparent display area provided in an embodiment of the present disclosure;

[0056] Fig.42 A schematic diagram of a partial structure of another display panel provided in an embodiment of the present disclosure;

[0057] Fig.43 A schematic diagram of a partial structure of another display panel provided in an embodiment of the present disclosure;

[0058] Fig.44 A schematic diagram of the structure of a display device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0059] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0060] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0061] In the related art, for a display panel with a transparent display area, the pixel driving circuit of a display panel with a lower PPI is generally compressed to leave a transparent display area, while for a display panel with a high PPI, its pixel driving circuit cannot be compressed any further. If the pixel driving circuit in the transitional display area is deleted, the number of pixel driving circuits in the transitional display area is too different from that in the regular display area, which will cause a large display difference between the transitional display area and the regular display area, causing problems such as color cast on the display panel.

[0062] In order to solve the above problems, the embodiment of the present disclosure provides a display panel, including a transparent display area, a wiring area, a transition display area and a regular display area, wherein the transition display area at least partially surrounds the transparent display area, the regular display area at least partially surrounds the transition display area and the transparent display area, the light transmittance of the transparent display area is greater than the light transmittance of the regular display area, the wiring area is located between the transparent display area and the transition display area, and between the transition display area and the regular display area; a pixel driving circuit and a light emitting element electrically connected to the pixel driving circuit, the pixel driving circuit is arranged in the transition display area and the regular display area, and the light emitting element is arranged in the transition display area and the regular display area. The circuit is arranged in the transparent display area, the wiring area, the transition display area and the conventional display area; the conventional display area includes the first conventional display area; along the first direction, the transition display area is located between the first conventional display area and the transparent display area; in the second direction, the number of levels of the pixel driving circuit in the first conventional display area is the first number, and the number of levels of the pixel driving circuit in the transition display area is the second number; the first direction is the direction from the transition display area to the transparent display area, and the second direction intersects with the first direction; wherein the difference between the first number and the second number is less than the preset number, and the preset number is equal to or less than 1 / 2 of the first number. Thus, the problem of color cast on the display panel caused by the excessive difference in the number of levels of the pixel driving circuit in the second direction between the transition display area and the conventional display area is avoided, which not only leaves layout space for the transparent display area in the display panel, but also improves the display effect of the display panel.

[0063] Figure 1 A schematic diagram of a top view of a display panel provided in an embodiment of the present disclosure is shown in FIG. Figure 2 A partial structural diagram of a display panel provided in an embodiment of the present disclosure is shown in FIG. Figure 3 A partial structural diagram of a display panel provided in an embodiment of the present disclosure is shown in FIG. Figure 4 A partial structural diagram of another display panel provided in an embodiment of the present disclosure is shown. Figure 5A partial structural diagram of another display panel provided in an embodiment of the present disclosure is shown. Figure 6 A schematic diagram of the partial structure of another display panel provided in an embodiment of the present disclosure. Figure 1 FIG. 4 exemplarily shows that the wiring area 1 is located between the transparent display area 10 and the transition display area 2. Figure 2 It is also shown in the figure that the routing area 1 is also located between the transition display area 2 and the normal display area 3.

[0064] The transition display area 2 is located on both sides of the routing area 1 along the first direction X. In some embodiments, the transition display area 2 can also be arranged around the routing area 1, that is, the transition display area 2 is located on both sides of the routing area 1 along the first direction X, and the transition display area 2 is located on both sides of the routing area 1 along the second direction Y. In addition, Figure 1 It is also exemplarily shown that the conventional display area 3 is arranged on both sides of the transition display area 2 and the wiring area 1 along the first direction X, and is arranged on one side of the transition display area 2 and the wiring area 1 in the second direction Y. In some embodiments, the conventional display area 3 can also be arranged on both sides of the transition display area 2 and the wiring area 1 in the second direction Y.

[0065] Exemplarily, light emitting elements ( Figures 1 to 6 The structure of the light-emitting element is not specifically shown in the figure), and the pixel driving circuit 4 is not arranged in the transparent display area 100, so that the circuit structure of the transparent display area 10 is less, thereby having a higher light transmittance. The light transmittance of the transparent display area 10 is greater than that of the conventional display area 3. Exemplarily, the transparent display area 10 can be used for display or for light transmission, for example, it can be used to realize functions such as image acquisition or fingerprint recognition, which is not limited in the embodiments of the present disclosure.

[0066] The transitional display area 2 is provided with a pixel driving circuit 4 for driving the light-emitting elements of the transparent display area 10 and the wiring area 1 to emit light, and is also provided with a pixel driving circuit 4 for driving the light-emitting elements of the transitional display area 2 to emit light. The transitional display area 2 may be light-transmissive or light-impermeable, and its light transmittance may be set according to the actual use requirements of the display panel. In some embodiments, the transitional display area 2 is light-transmissive, and the light transmittance of the transitional display area 2 is lower than the light transmittance of the transparent display area 10.

[0067] The light emitting element provided in the embodiment of the present disclosure may be, for example, an organic light emitting diode (OLED) light emitting element, that is, the display panel is an OLED display panel. It is understandable that the display panel of the embodiment of the present disclosure may also be other self-luminous display panels that can be driven in an active matrix (AM) manner similar to the OLED display panel.

[0068] The pixel driving circuit 4 provided in the embodiment of the present disclosure refers to the smallest repeating unit of the circuit structure for driving the corresponding light-emitting element to emit light. Figure 2 The specific structure of the pixel driving circuit 4 is illustrated only by a rectangular frame, and the specific structure of the pixel driving circuit 4 can be, for example, a 2T1C circuit, a 7T1C circuit, a 7T2C circuit, an 8T1C circuit, etc. In this article, a "2T1C circuit" refers to a pixel circuit including two thin film transistors (T) and one capacitor (C), and other "7T1C circuits", "7T2C circuits", etc. are similar, and the transistors can all be P-type or all N-type, or some can be N-type and some can be P-type.

[0069] Figures 2 to 6 , two first regular display areas 31 are exemplarily shown, and along the first direction X, the transition display area 2 is set between the first regular display area 31 and the transparent display area 10. In the second direction Y, the number of levels of the pixel driving circuits 4 in the first regular display area 31 is the first number N1, and the number of levels of the pixel driving circuits 4 in the transition display area 2 is the second number N2, and the difference between the first number N1 and the second number N2 is set to be less than a preset number, which can be, for example, equal to or less than 1 / 2 of the first number N1.

[0070] In some embodiments, reference Figure 2 , in the second direction Y, the number of pixel driving circuits 4 in the first normal display area 31 is the first number N1, the first number N1 is, for example, 10, and the number of pixel driving circuits 4 in the transition display area 2 is the second number N2, the second number N2 is, for example, 6, that is, the difference between the first number N1 and the second number N2 is 4, which is less than 1 / 2 of the first number N1. In other embodiments, referring to Figure 3 , in the second direction Y, the number of pixel driving circuits 4 in the first normal display area 31 is, for example, 10, and the number of pixel driving circuits 4 in the transition display area 2 is, for example, 7, that is, the difference between the first number of levels N1 and the second number of levels N2 is 3, which is less than 1 / 2 of the first number of levels N1. In some other embodiments, referring to Figure 4 , in the second direction Y, the number of pixel driving circuits 4 in the first normal display area 31 is, for example, 10, and the number of pixel driving circuits 4 in the transition display area 2 is, for example, 8, that is, the difference between the first number of levels N1 and the second number of levels N2 is 2, which is less than 1 / 2 of the first number of levels N1. In some other embodiments, referring to Figure 5 In the second direction Y, the number of levels of the pixel driving circuit 4 in the first conventional display area 31 is, for example, 10, and the number of levels of the pixel driving circuit 4 in the transition display area 2 is, for example, 9, that is, the difference between the first number N1 and the second number N2 is 1, which is less than 1 / 2 of the first number N1.

[0071] Figure 6 It is exemplarily shown that in the second direction Y, the number of levels of pixel driving circuits 4 in the first conventional display area 31, i.e., the first number N1, is 10, the number of levels of pixel driving circuits 4 in the transition display area 2, i.e., the second number N2, is 10, and the difference in levels between the first number N1 and the second number N2 is 0.

[0072] Therefore, by setting the difference between the first level and the second level to be smaller than the preset level, the level of the pixel driving circuit 4 of the transition display area 2 in the second direction Y is made close to the level of the pixel driving circuit 4 of the conventional display area 3 in the second direction Y, thereby avoiding the problem of color cast of the display panel due to excessive difference in the level of the pixel driving circuit 4 in the second direction Y between the transition display area 2 and the conventional display area 3, thereby improving the display effect of the display panel.

[0073] It should be noted that the first direction X provided in the embodiment of the present disclosure may be, for example, a row direction of a display panel, the second direction Y may be, for example, a column direction of a display panel, the first direction X and the second direction Y may be, for example, other directions intersecting each other, and the angle between the first direction X and the second direction Y is not limited in the embodiment of the present disclosure.

[0074] Alternatively, if Figures 2 to 6 As shown, the conventional display area 3 includes a second conventional display area 32; along the second direction Y, the second conventional display area 32 is located on one side of the transparent display area 10 and the transition display area 2; in the first direction X, the number of levels of the pixel driving circuit 4 in the second conventional display area 32 is the third number, and the number of levels of the pixel driving circuit 4 in the transition display area 2 is the fourth number; the fourth number is smaller than the third number.

[0075] Specifically, Figure 2 As shown, along the second direction Y, the second normal display area 32 is located on one side of the transparent display area 10 and the transition display area 2. Figure 2 Take the plane direction as an example, Figures 2 to 6 The second conventional display area 32 in the embodiment is located at the lower side of the wiring area 1, the transparent display area 10 and the transition display area 2. In some embodiments, along the second direction Y, the second conventional display area 32 may also be located at the upper side of the transparent display area 10 and the transition display area 2, which is not limited in the embodiment of the present disclosure. For example, the second conventional display area 32 set in the embodiment of the present disclosure is located at Figures 2 to 6 The first conventional display area 31 is located between the two first conventional display areas 31 and on one side of the wiring area 1 , the transparent display area 10 and the transition display area 2 .

[0076] Reference Figure 6It is understood that in the second direction Y, the number of pixel driving circuits 4 in the first regular display area 31, i.e., the first number N1, is N, the number of pixel driving circuits 4 in the transition display area 2, i.e., the second number N2, is N, and in the first direction X, the number of pixel driving circuits 4 in the second regular display area 32 is the third number, Figure 6 It is exemplarily shown that the third number is, for example, 2N, the number of pixel driving circuits 4 in the transition display area 2 is the fourth number, the fourth number is, for example, 2×1 / 2N=N, and the third number 2N is greater than the fourth number N. Therefore, by reducing the number of pixel driving circuits 4 in the transition display area 2 in the first direction X, space is reserved for the transparent display area 10 where the pixel driving circuits 4 are not arranged, and there is no need to change the size of the pixel driving circuits 4, which solves the problem that the pixel driving circuits 4 cannot be compressed for a high PPI display panel and it is difficult to arrange the transparent display area 10, thereby simplifying the manufacturing process of the display panel.

[0077] Figure 7 A schematic diagram of a partial structure of another display panel provided by an embodiment of the present disclosure. Figure 7 As shown, among the pixel driving circuits 4 in the transition display area 2 , there is at least one pixel driving circuit 4 electrically connected to at least two light-emitting elements 5 .

[0078] Exemplarily, at least two light-emitting elements 5 may be located in the transparent display area 10 , or in the wiring area 1 , or in the transition display area 2 . The embodiments of the present disclosure do not specifically limit the locations of the at least two light-emitting elements 5 .

[0079] Specifically, Figure 7 The figure shows four pixel driving circuits 4 and eight light emitting elements 5 in the transition display area 2 by way of example. Each pixel driving circuit 4 is electrically connected to two light emitting elements 5, and the anodes of the two light emitting elements 5 are electrically connected. The structure performs a one-to-many design for the pixel driving circuit 4. By electrically connecting one pixel driving circuit 4 to at least two light emitting elements 5, the number of pixel driving circuits 4 required to be arranged in the transition display area 2 can be reduced, thereby reducing the area of ​​the display panel required to be occupied by the pixel driving circuit 4, leaving space for the layout of the transparent display area 10. In addition, the embodiment of the present disclosure can also utilize limited pixel driving circuits 4 to drive more light emitting elements 5, thereby improving the pixel density of the transparent display area 10, the wiring area 1, and the transition display area 2, reducing the brightness difference and picture difference between the conventional display area 3, and improving the display quality of the display panel.

[0080] It should be noted that the number of light-emitting elements 5 electrically connected to a pixel driving circuit 4 can be set according to the actual use requirements of the display panel, and the embodiment of the present disclosure does not limit this.

[0081] Optionally, combined Figure 6 and Figure 7 The pixel driving circuit 4 in the transition display area 2 is set as a pixel driving circuit 4 with a drive of N0, N0 is an integer and N0≥2; the third level and the fourth level satisfy: N1=N0×N2; wherein N1 represents the third level and N2 represents the fourth level.

[0082] Figure 7 exemplarily shows that the pixel driving circuit 4 in the transition display area 2 is set as a one-drive-two pixel driving circuit 4, that is, one pixel driving circuit 4 is electrically connected to two light-emitting elements 5 to drive the two light-emitting elements 5 to emit light, and the anodes of the two light-emitting elements 5 are electrically connected together, thereby reducing the number of pixel driving circuits 4 required to be set in the transition display area 2. Figure 7 When the pixel driving circuit 4 is set as a one-drive-two pixel driving circuit 4, along the first direction X, the number of levels of the pixel driving circuit 4 of each transition display area 2 on both sides of the transparent display area 10 is, for example, N / 2, then the fourth level is N2=2×N / 2=N, and the third level is N1=2N2=2N. Thus, by setting a one-drive-N0 pixel driving circuit 4, the number of levels of the pixel driving circuit 4 of the transition display area 2 in the first direction X is reduced, and space is opened up for the transparent display area 10 on a display panel with ultra-high PPI or complex process that cannot compress the size of the pixel driving circuit 4. In addition, the embodiment of the present disclosure can also use limited pixel driving circuits 4 to drive more light-emitting elements 5, thereby improving the pixel density of the transparent display area 10, the wiring area 1 and the transition display area 2, reducing the brightness difference and picture difference between the conventional display area 3, and improving the display quality of the display panel.

[0083] Figure 8 A schematic diagram of the partial structure of another display panel provided in an embodiment of the present disclosure. Fig. 9 for Figure 8 A partial enlarged schematic diagram of the middle area B1. Optionally, in combination Figure 8 and Fig. 9 As shown, along the second direction Y, the i-th level pixel driving circuit 4 in the transition display area 2 is correspondingly connected to one of the first level pixel driving circuits 4 in the second normal display area 32; wherein i is an integer greater than or equal to 1 and less than or equal to the third level.

[0084] Specifically, combined Figure 8 and Fig. 9In order to realize the driving of the light-emitting element 5 by the pixel driving circuit 4, along the second direction Y, the i-th level pixel driving circuit 4 in the transition display area 2 is correspondingly connected to one of the level pixel driving circuits 4 in the second regular display area 32, and since in the first direction X, the number of levels of the pixel driving circuit 4 in the transition display area 2 is less than the number of levels of the pixel driving circuit 4 in the second regular display area 32, therefore, i is an integer greater than or equal to 1 and less than or equal to the third level.

[0085] In order to realize the transmission of signals between the second normal display area 32 and the transition display area 2, in some embodiments, the data signal line corresponding to the i-th level pixel driving circuit 4 in the transition display area 2 can be electrically connected with the data signal line corresponding to one of the first-level pixel driving circuits 4 in the second normal display area 32, so as to realize the transmission of data signals between the second normal display area 32 and the transition display area 2. In other embodiments, the power signal line corresponding to the i-th level pixel driving circuit 4 in the transition display area 2 can also be electrically connected with the power signal line corresponding to one of the first-level pixel driving circuits 4 in the second normal display area 32, so as to realize the transmission of power signals between the second normal display area 32 and the transition display area 2. It can be understood that the signal lines corresponding to the i-th level pixel driving circuit 4 in the transition display area 2 and one of the first-level pixel driving circuits 4 in the second normal display area 32 can also be electrically connected, which will not be described one by one here.

[0086] Alternatively, if Fig. 9 As shown, along the first direction X, the pixel driving circuit 4 in the second normal display area 32 has at least N3 groups; a group of pixel driving circuits 4 includes N4 pixel driving circuits 4; wherein N3 is equal to the number of pixel circuits located in the transition display area 2 along the first direction X, N3≥1, and N3 is an integer; along the first direction X, the j-th pixel driving circuit 4 in each group of pixel driving circuits 4 is connected to the pixel driving circuit 4 in the transition display area 2; wherein 1≤j≤N4, and j is an integer.

[0087] For example, Fig. 9 FIG. 4 shows that along the first direction X, the pixel driving circuits 4 in the second conventional display area 32 are divided into ten groups, namely, ten pixel driving circuit groups 40. Fig. 9 The pixel driving circuit group 40 is illustrated in a dotted frame. Each group of pixel driving circuits 4 includes two pixel driving circuits 4. Fig. 9For example, along the first direction X, the first pixel driving circuit 4 in each group of pixel driving circuits 4 is connected to the pixel driving circuit 4 in the transition display area 2, the number of pixel driving circuits 4 in the pixel driving circuit group 40 is consistent, and the connection order of the pixel driving circuits 4 in the transition display area 2 is consistent. The wiring of the display panel is carried out according to this rule, which is conducive to simplifying the wiring process of the display panel, ensuring the consistency of the display panel process, and improving the manufacturing efficiency of the display panel. In addition, the data line between the transition display area 2 and the second conventional display area 32 can be connected by a connecting line, for example. The wiring of the display panel according to this rule will also make the distribution of the connecting line more uniform, thereby improving the display quality of the display panel.

[0088] It can be understood that when each pixel driving circuit group 40 includes multiple pixel driving circuits 4, it can be arranged that, for example, the second pixel driving circuit 4 in each pixel driving circuit group 40 is connected to the pixel driving circuit 4 in the transition display area 2. The embodiment of the present disclosure does not specifically limit the order in which the pixel driving circuit 4 in the second conventional display area 32 and the pixel driving circuit 4 in the transition display area 2 are electrically connected.

[0089] Fig.10 A schematic diagram of a pixel driving circuit in a transitional display area provided by an embodiment of the present disclosure is shown in FIG. Fig.11 The following is a schematic diagram of a pixel driving circuit in a conventional display area provided by an embodiment of the present disclosure. Fig.10 and Fig.11 , the pixel driving circuit 4 in the transition display area 2 has a first width L1 in the first direction X, and a second width L2 in the second direction Y; the pixel driving circuit 4 in the conventional display area 3 has a third width L3 in the first direction X, and a fourth width L4 in the second direction Y; wherein the first width, the second width, the third width and the fourth width satisfy: 90% L1≤L3≤110% L1, 90% L2≤L4≤110% L2; wherein L1 represents the first width, L2 represents the second width, L3 represents the third width, and L4 represents the fourth width; the second direction Y intersects the first direction X, and both are located in the plane where the display panel is located.

[0090] Fig.10 FIG. 4 shows a pixel driving circuit 4 in the transition display area 2, and has a first width L1 in the first direction X, a second width L2 in the second direction Y, Fig.11 FIG. 4 shows a pixel driving circuit 4 in a conventional display area 3 , which has a third width L3 in the first direction X and a fourth width L4 in the second direction Y. FIG.

[0091] For example, according to Fig.10The first width L1 is, for example, the vertical distance from the left edge of the film layer in the pixel driving circuit 4 in the transition display area 2 to the right edge of the film layer in the vertical projection of the substrate, and the second width L2 is, for example, the vertical distance from the upper edge to the lower edge of the film layer in the vertical projection of the substrate of the pixel driving circuit 4 in the transition display area 2. Fig.11 In the direction of the substrate, the third width L3 is, for example, a vertical distance from the left edge of the membrane layer of the pixel driving circuit 4 in the conventional display area 3 to the right edge of the membrane layer in the vertical projection of the substrate, and the fourth width L2 is, for example, a vertical distance from the upper edge to the lower edge of the membrane layer of the pixel driving circuit 4 in the conventional display area 3 in the vertical projection of the substrate.

[0092] Exemplarily, the first width of the pixel driving circuit 4 in the transition display area 2 in the first direction X can be set to be equal to the third width of the pixel driving circuit 4 in the conventional display area 3 in the first direction X within the process error range, and the second width of the pixel driving circuit 4 in the transition display area 2 in the second direction Y can be set to be equal to the fourth width of the pixel driving circuit 4 in the transition display area 2 in the second direction Y within the process error range. Therefore, relative to the size of the pixel driving circuit 4 in the conventional display area 3, there is no need to compress the size of the pixel driving circuit 4 in the transition display area 2, so that the size of the pixel driving circuit 4 in the transition display area 2 and the size of the pixel driving circuit 4 in the conventional display area 3 are as equal as possible within the process error range, thereby simplifying the preparation process of the display panel and avoiding the problem of being unable to layout the transparent display area 10 due to the inability to compress the pixel driving circuit 4.

[0093] Fig.12 A circuit structure diagram of a pixel driving circuit provided by an embodiment of the present disclosure is shown in FIG. Fig.12As shown, the pixel driving circuit 4 includes seven transistors T1 to T7 and a capacitor Cst. The first light-emitting control transistor T1 and the second light-emitting control transistor T6 are turned off when the light-emitting control signal provided by the light-emitting control signal line EMIT is at a high level, and are turned on when the light-emitting control signal is at a low level, so that the light-emitting element 5 emits light in the light-emitting stage. The first reset transistor T5 is turned on when the first scanning signal provided by the first scanning signal line S1 is at a high level, and is used to write the reference voltage signal provided by the reference signal line VREF1 into the first node N1. The data writing transistor T2 writes the data signal provided by the data signal line DATA into the driving transistor T3 when the third scanning signal provided by the third scanning signal line SP is at a low level, and the threshold compensation transistor T4 is turned on when the second scanning signal S2 provided by the second scanning signal line is at a low level. The second reset transistor T7 is turned on when the third scanning signal provided by the third scanning signal line SP is at a low level, and writes the anode reset signal provided by the anode reset signal line VREF2 into the fourth node N4. Among them, the second end of the first light-emitting control transistor T1, the first end of the driving transistor T3 and the first end of the data writing transistor T2 are all connected to the N2 node, and the second end of the driving transistor T3, the second end of the threshold compensation transistor T4 and the first end of the second light-emitting control transistor T6 are all connected to the N3 node.

[0094] Fig.13 A schematic cross-sectional structure diagram of a display panel provided in an embodiment of the present disclosure, Fig.14 A schematic diagram of the planar structure of a bottom shielding metal layer of a driving repeating unit provided in an embodiment of the present disclosure, Fig.15 A schematic diagram of a planar structure of a first active layer of a driving repeating unit provided in an embodiment of the present disclosure, Fig.16 A schematic diagram of a planar structure of a first metal layer of a driving repeating unit provided in an embodiment of the present disclosure, Fig.17 A schematic diagram of a planar structure of a capacitor metal layer of a driving repeating unit provided in an embodiment of the present disclosure, Fig.18 A schematic diagram of a planar structure of a second active layer of a driving repeating unit provided in an embodiment of the present disclosure, Fig.19 A schematic diagram of the planar structure of a second metal layer of a driving repeating unit provided in an embodiment of the present disclosure, Fig. 20 A schematic diagram of the planar structure of a third metal layer of a driving repeating unit provided in an embodiment of the present disclosure, Fig.21 A schematic diagram of the planar structure of a first planarization layer of a driving repeating unit provided in an embodiment of the present disclosure, Fig. 22 A schematic diagram of the planar structure of a fourth metal layer of a driving repeating unit provided in an embodiment of the present disclosure, Fig.23 A schematic diagram of a planar structure of a second planarization layer provided in an embodiment of the present disclosure, Fig.24A schematic diagram of a planar structure of a first conductive layer provided in an embodiment of the present disclosure, Fig.25 A schematic diagram of a planar structure of a third planarization layer provided in an embodiment of the present disclosure, Fig.26 A schematic diagram of a planar structure of a second conductive layer provided in an embodiment of the present disclosure, Fig. 27 A schematic diagram of a planar structure of a fourth planarization layer provided in an embodiment of the present disclosure, Fig.28 A schematic diagram of the planar structure of a third conductive layer provided in an embodiment of the present disclosure.

[0095] Combination Figures 12 to 28 , the bottom shielding metal layer M0 is used to shield the impurity ions at the bottom. The first metal layer M1 includes a third scanning signal line SP for transmitting a third scanning signal to control the on and off of the data writing transistor and the second reset transistor T7, and the first metal layer M1 also includes a light emitting control signal line EMIT. The capacitor metal layer MC may include, for example, a reference signal line VREF1, and a bottom gate G1 of a threshold compensation transistor T4 and a bottom gate G2 of a first reset transistor T5. The second metal layer MG may include, for example, an anode reset signal line VREF2, a bottom gate G3 of a threshold compensation transistor T4 and a bottom gate G2 of a first reset transistor T5.

[0096] The third metal layer M2 can be used as a source-drain metal layer, for example. Exemplarily, the display panel can also include an auxiliary line V3, which extends along the second direction Y and can be connected to the reference signal line VREF1 extending along the first direction X for transmitting a reference signal; and / or, the auxiliary line V3 can be connected to the anode reset signal line VREF2 extending along the first direction X for transmitting an anode reset signal. In this way, a grid connection can be achieved, and the voltage drop at different positions in the display panel can be balanced, which is conducive to improving display uniformity.

[0097] The fourth metal layer M3, for example, can be the layer where the power signal line PVDD is located. In addition, the display panel also includes a capacitor metal layer MC, and the capacitor metal layer MC and the first metal layer M1 can be used to form a storage capacitor. The capacitor metal layer MC can also include a reset signal line VREF. The first active layer POLY can be, for example, a polysilicon layer, and the second active layer IGZO can be, for example, a metal oxide semiconductor layer. The first planarization layer PLN1, the second planarization layer PLN2, the third planarization layer BP1 and the fourth planarization layer BP2 can be, for example, organic layers for providing a flat surface for the display panel. The first conductive layer ITO1, the second conductive layer ITO2 or the third conductive layer ITO3 can, for example, be used as a transmission signal connection 73 between the light-emitting elements 5.

[0098] Alternatively, if Figure 8As shown, the second number of levels is equal to the first number of levels; the pixel driving circuits 4 in the transition display area 2 are connected one-to-one with the pixel driving circuits 4 in the first normal display area 31 according to the same number of levels.

[0099] Specifically, Figure 8 As shown, in the embodiment of the present disclosure, the second level is set equal to the first level, for example, both are Figure 2 . Exemplarily, along the direction from the transition display area 2 to the first regular display area 31, the first regular display area 31 includes N-level pixel driving circuits 4, the transition display area 2 includes, for example, N-level pixel driving circuits 4, and the n-th level pixel driving circuit 4 of the transition display area 2 is electrically connected to the n-th level pixel driving circuit 4 of the first regular display area 31, wherein 1≤n≤N, and n and N are both positive integers.

[0100] In order to realize the transmission of signals between the second normal display area 32 and the transition display area 2, in some embodiments, the light emitting control signal line corresponding to the n-th level pixel driving circuit 4 of the transition display area 2 can be electrically connected to the light emitting control signal line corresponding to the n-th level pixel driving circuit 4 of the first normal display area 31, so as to realize the transmission of the light emitting control signal between the first normal display area 31 and the transition display area 2. In other embodiments, the reference signal line corresponding to the n-th level pixel driving circuit 4 of the transition display area 2 can be electrically connected to the reference signal line corresponding to the n-th level pixel driving circuit 4 of the first normal display area 31, so as to realize the transmission of the reference signal between the first normal display area 31 and the transition display area 2. In still other embodiments, the scanning signal line corresponding to the n-th level pixel driving circuit 4 of the transition display area 2 can be electrically connected to the scanning signal line corresponding to the n-th level pixel driving circuit 4 of the first normal display area 31, so as to realize the transmission of the scanning signal between the first normal display area 31 and the transition display area 2.

[0101] Therefore, by connecting the pixel driving circuit 4 in the transition display area 2 and the pixel driving circuit 4 in the first conventional display area 31 in a one-to-one correspondence according to the same level, the wiring process is simplified, and the color cast problem of the display panel caused by the large difference in the levels of the pixel driving circuit 4 in the second direction Y between the transition display area 2 and the conventional display area 3 is avoided, thereby optimizing the display effect of the display panel.

[0102] Alternatively, if Figure 8 As shown, along the first direction X, there is a first gap 61 between the pixel driving circuit 4 in the transition display area 2 and the regular display area 3, and along the second direction Y, there is a second gap 62 between the pixel driving circuit 4 in the transition display area 2 and the regular display area 3; wherein the first gap 61 and the second gap 62 satisfy: G1>G2; wherein G1 represents the width of the first gap 61 in the first direction X, and G2 represents the width of the second gap 62 in the second direction Y.

[0103] Figure 8 The example in the figure shows that the pixel driving circuit 4 in the transition display area 2 is translated along the first direction X so that there is a first gap 61 between the pixel driving circuit 4 in the transition display area 2 and the conventional display area 3, and the pixel driving circuit 4 in the transition display area 2 is translated along the second direction Y so that there is a second gap 62 between the pixel driving circuit 4 in the transition display area 2 and the conventional display area 3. The first gap 61 is used to arrange the connection lines of the scanning signal lines, the light emitting control signal lines or the reference signal lines of the pixel driving circuit 4 between the transition display area 2 and the first display area 31, and the second gap 62 is used to arrange the connection lines of the data lines of the pixel driving circuit 4 between the transition display area 2 and the second display area 32. Therefore, by translating the pixel driving circuit 4 in the transition display area 2 along the first direction X and the second direction Y, there is no need to compress the pixel driving circuit 4 in the transition display area 2, and space can be reserved for the transparent display area 10, thereby simplifying the preparation process of the display panel.

[0104] Optionally, combined Figure 8 and Fig.11 , the pixel driving circuit 4 of the conventional display area 3 has a fourth width in the second direction Y; and satisfies: G1<2L4; wherein L4 represents the fourth width.

[0105] Specifically, combined Figure 8 and Fig.11 The pixel driving circuit 4 of the conventional display area 3 has a fourth width L4 in the second direction Y. In the first direction X, the width of the first gap 61 between the pixel driving circuit 4 in the transition display area 2 and the pixel driving circuit 4 in the conventional display area 3 is set to be smaller than the width of the two pixel driving circuits 4 in the conventional display area 3 along the second direction Y, that is, 2L4. In this way, the connecting line of the data line between the transition display area 2 and the first display area 31 can be arranged in the first gap 31, and the transition display area 2 can be prevented from exceeding the conventional display area 3 too much, causing the problem of excessive area of ​​the upper frame of the display panel, which is beneficial to reducing the frame area of ​​the display panel.

[0106] Alternatively, if Figure 8 As shown, a first type of connection line 71 is arranged in the first gap 61 and the second gap 62; the first type of connection line 71 connects the pixel driving circuit 4 in the transition display area 2 along the first direction X and the pixel driving circuit 4 in the regular display area 3; the first type of connection line 71 passing through the first gap 61 is used to transmit a first type of signal, and the first type of signal includes at least one of a reference signal, a scanning signal and a light-emitting control signal; the first type of connection line 71 passing through the second gap 62 is used to transmit a second type of signal, and the second type of signal includes a data signal.

[0107] Specifically, Figure 8As shown, the first type of connection line 71 passing through the first gap 61 is used to connect the pixel driving circuit 4 in the transition display area 2 along the first direction X and the pixel driving circuit 4 in the regular display area 3. The first type of connection line 71 passing through the first gap 61 can transmit, for example, one or more of a reference signal, a scan signal, and a light-emitting control signal. Therefore, the first type of connection line 71 can be, for example, one or more of a reference signal VREF, a scan signal line SCAN, and a light-emitting control signal line EMIT. In some embodiments, the first type of connection line 71 can also transmit other signals that need to be transmitted along the first direction X, which is not specifically limited in the embodiments of the present disclosure.

[0108] The first type of connection line 71 passing through the second gap 62 is used to connect the pixel driving circuit 4 in the transition display area 2 and the pixel driving circuit 4 in the normal display area 3 along the second direction Y. The first type of connection line 71 passing through the second gap 62 can transmit data signals. In some embodiments, the first type of connection line 71 can also transmit other signals that need to be transmitted along the second direction Y, which is not specifically limited in the embodiments of the present disclosure.

[0109] Fig.29 A partial structural diagram of another display panel provided in an embodiment of the present disclosure is shown. Fig.30 for Fig.29 A partial enlarged schematic diagram of the middle area B2. Optionally, in combination Fig.29 and Fig.30 A power signal line PVDD is also provided in the first gap 61; a power signal input terminal of the pixel driving circuit 4 is connected to the power signal line PVDD.

[0110] Specifically, combined Fig.29 and Fig.30 A power signal line PVDD is also arranged in the first gap 61 for transmitting a power signal. The power signal line PVDD extends to the transition display area 2 and the normal display area 3 so that the pixel driving circuit 4 in the transition display area 2 and the pixel driving circuit 4 in the normal display area 3 can access the power signal. Fig.29 and Fig.30 It can be seen that the area of ​​the power signal line PVDD is larger than the area of ​​the first type of connecting line 71. Since the density of signal lines in the peripheral area, such as the scanning signal line SCAN, is significantly higher than that in the conventional display area 3 and the transition display area 2, the load of the light-emitting elements in the conventional display area 3 and the transition display area 2 is higher than that in other areas. Therefore, the power signal line PVDD with a large area of ​​positive voltage can be used to shield the signal, which is beneficial to reduce the disturbance of the signal line in the peripheral area to the anode signal of the light-emitting element 5, thereby improving the display effect of the display panel.

[0111] When the power signal line PVDD and the first type of connection 71 are arranged on the same layer, due to the limited layout space, the wiring spacing is reduced, and short circuit is likely to occur between adjacent wirings. Therefore, the power signal line PVDD and the first type of connection 71 are arranged to be distributed in different film layers so that the wiring of the power signal line PVDD and the wiring of the first type of connection 71 do not interfere with each other. While avoiding the short circuit between the power signal line PVDD and the first type of connection 71, it is also beneficial to simplify the wiring difficulty of the power signal line PVDD and the first type of connection 71 and simplify the preparation process.

[0112] Optionally, combined Fig.29 and Fig.30 The display panel also includes a scanning signal line SCAN, which is electrically connected to a scanning signal receiving end of the pixel driving circuit 4; in the first gap 61, in a direction perpendicular to the plane where the display panel is located, the power signal line PVDD is located between the scanning signal line SCAN and the light-emitting element 5.

[0113] Specifically, combined Fig.29 and Fig.30 The display panel may further include a scanning signal line SCAN, which extends along the first direction X and is arranged along the second direction Y. The scanning signal line SCAN is electrically connected to the scanning signal receiving end of the pixel driving circuit 4 for transmitting the scanning signal. Since the density of the first type of connection line 71 in the first gap 61, such as the scanning signal line SCAN, is higher than that of the transition display area 2 and the conventional display area 3, the signal connected to the light-emitting element 5 in the first gap 61 is an anode signal with a positive voltage, and the scanning signal line SCAN is a high-frequency AC signal across positive and negative potentials. Therefore, in the first gap 61, in a direction perpendicular to the plane where the display panel is located, the power signal line PVDD is set between the scanning signal line SCAN and the light-emitting element 5, and the power signal line PVDD with a large area of ​​positive voltage is used to achieve signal shielding, which is conducive to reducing the disturbance of the scanning signal line SCAN to the anode signal of the light-emitting element 5, thereby improving the display effect of the display panel.

[0114] Fig.31 A schematic diagram of a planar structure of a power signal line provided by an embodiment of the present disclosure. Optionally, Fig.31 As shown, the power signal line PVDD includes a hollow area 81 and a non-hollow area 82 at least partially surrounding the hollow area 81 . Fig.31 FIG. 4 exemplarily shows that the power signal line PVDD- 2 in the transition display area 2 and the power signal line PVDD- 3 in the normal display area 3 are electrically connected.

[0115] Specifically, Fig.31 As shown, an opening may be provided on the power signal line PVDD to form a hollow area 81, for example Fig.31In the rectangular hole shown, the power signal line PVDD also includes a non-hollow area 82 that at least partially surrounds the hollow area 81, and the material of the film layer where the power signal line PVDD is located is also retained in the non-hollow area 82. By adjusting the area size of the hollow area 81, the area ratio of the area shielded by the power signal line PVDD is adjusted, thereby reducing the difference between the load of the light-emitting element 5 in the first gap 61, the load of the transition display area 2, and the load of the normal display area 3.

[0116] Alternatively, if Fig.31 As shown, the area of ​​the hollow area 81 is the first area, the area of ​​the non-hollow area 82 is the second area, and the first area and the second area satisfy: 20%≤S1 / (S1+S2)≤80%; wherein S1 represents the first area, and S2 represents the second area. Fig.31 The non-hollow area 82 is represented by a filled pattern.

[0117] For example, Fig.31 As shown, the ratio of the area of ​​the hollow area 81 to the sum of the first area and the second area can be set, for example, between 20% and 80%. The anode of the light-emitting element 5 in the area outside the hollow area 81 will receive disturbances from signals such as scanning signals. If the hollow area 81 is too tight or does not perform signal shielding at all, it will cause differences between the load of the light-emitting element 5, the load of the transition display area 2, and the load of the conventional display area 3. The proportion of the area of ​​the hollow area 81 between 20% and 80% can reduce the difference between the load of the light-emitting element 5 in the first gap 61 and the load of the transition display area 2 and the load of the conventional display area 3, thereby improving the display effect of the display panel. It should be noted that the specific area proportion of the area of ​​the hollow area 81 can be set according to the actual use of the display panel, and the embodiment of the present disclosure is not limited to this. In addition, the specific shape of the hollow area 81 is not limited in the embodiment of the present disclosure.

[0118] Fig.32 A schematic cross-sectional structure diagram of a display panel provided in an embodiment of the present disclosure. Fig.29 , Fig.30 and Fig.32 In the conventional display area 3, the display panel further includes data lines DATA extending along the second direction Y and arranged along the first direction X; first-type connection lines 71 passing through the second gaps 62 connect the data lines DATA, and at least part of the first-type connection lines 71 and the data lines DATA are arranged in different layers. Fig.32 The membrane layers are distinguished by different filling patterns.

[0119] Specifically, combined Fig.29 , Fig.30 and Fig.32The first-class connection line 71 passing through the second gap 62 is used to transmit data signals, so the first-class connection line 71 of the second gap 62 is connected to the data line DATA. The power signal line PVDD and the data line DATA can be set on the same layer, and the power signal line PVDD located in the routing area 1, the transition display area 2 and the conventional display area 3 can be set on the same layer. The first-class connection line 71 passing through the second gap 62 cannot be set on the same layer as the data line DATA. When the data line DATA and the first-class connection line 71 are set on the same film layer, due to the limited layout space, the wiring spacing is reduced, and short circuits are likely to occur between adjacent wirings. Therefore, when the first-class connection line 71 and the data line DATA are arranged on different film layers of the display panel, the first-class connection line 71 and the data line DATA can be electrically connected through a via, so that the wiring of the data line DATA and the wiring of the first-class connection line 71 do not interfere with each other. While avoiding the short circuit between the data line DATA and the first-class connection line 71, it is also beneficial to simplify the wiring difficulty of the data line DATA and the first-class connection line 71, and simplify the preparation process.

[0120] Fig.33 A schematic cross-sectional structure diagram of a display panel provided in an embodiment of the present disclosure. Fig.29 , Fig.30 and Fig.33 The first type of connection line 71 passing through the second gap 62 includes a first adapter line 711 and a second adapter line 712; the first adapter line 711 and the second adapter line 712 are arranged in different layers.

[0121] Specifically, the first adapter wire 711 and the second adapter wire 712 can be used to transmit data signals. When the first adapter wire 711 and the second adapter wire 712 are both located in the same film layer, due to the limited layout space of the film layer, the distance between the first adapter wire 711 and the second adapter wire 712 will be too close, which increases the difficulty of manufacturing the first adapter wire 711 and the second adapter wire 712, and also increases the risk of short circuit between the first adapter wire 711 and the second adapter wire 712. In addition, if the distance between the first adapter wire 711 and the second adapter wire 712 is too close, the first adapter wire 711 and the second adapter wire 712 will be coupled, affecting the display effect of the display panel, while increasing the distance between the first adapter wire 711 and the second adapter wire 712 will cause too much film layer space to be occupied. Therefore, the embodiment of the present disclosure arranges the first adapter wire 711 and the second adapter wire 712 to be distributed in different film layers to avoid the problem of short circuit between the two, simplify the difficulty of manufacturing the first adapter wire 711 and the second adapter wire 712, and ensure that there is a larger interval between the first adapter wire 711 and the second adapter wire 712, thereby reducing or avoiding the problem of signal coupling between the first adapter wire 711 and the second adapter wire 712.

[0122] Fig.33In the example, the first adapter line 711 and the second adapter line 712 partially overlap in the direction perpendicular to the substrate. The first adapter line 711 and the second adapter line 712 may also be arranged without overlapping, and may be arranged according to the actual space setting of the display panel. The embodiments of the present disclosure do not specifically limit this.

[0123] Fig.34 for Fig.29 Another partial enlarged schematic diagram of the middle area B2. Fig.34 As shown, in the plane where the display panel is located, the first adapter wires 711 and the second adapter wires 712 are alternately arranged.

[0124] Specifically, Fig.34 As shown, the conventional display area 3 and the transition display area 2 require the first adapter lines 711 to overlap in a stepped manner due to the staggered arrangement. The greater the number of first-type lines 71, the larger the space occupied by the overlapping lines, i.e., the spacing of the second gaps 62. In order to reduce the space occupied by the second gaps 62, the first adapter lines 711 and the second adapter lines 712 can be arranged alternately, which is conducive to wiring the first adapter lines 711 and the second adapter lines 712 in a smaller wiring space, leaving more space for the transparent display area 10, thereby improving the display effect of the display panel.

[0125] Alternatively, if Fig.34 As shown, the display panel also includes a base substrate PI, a first metal layer M1 and a second metal layer MG, wherein the first metal layer M1 is located between the base substrate PI and the second metal layer MG; the first metal layer M1 includes a first transfer line 711, and the second metal layer MG includes a second transfer line 712; wherein the resistance value of the first metal layer M1 is at the same order of magnitude as the resistance value of the second metal layer MG.

[0126] Specifically, Fig.34As shown, the substrate PI can be used to support the film layer arranged thereon, and the substrate PI can include a rigid substrate, such as glass, silicon wafer, and can also include a flexible substrate, such as thin glass, stainless steel, polyimide, etc., which is not limited here. For example, a first shielding layer and a second shielding layer can also be set on the substrate PI to prevent charge crosstalk. The first metal layer M1 can be, for example, a gate metal layer of an LTPS transistor of a polysilicon semiconductor layer, and the second metal layer MG can be, for example, a gate metal layer of an IGZO transistor of an oxide semiconductor layer. Since the resistance value of the first metal layer M1 and the resistance value of the second metal layer MG are at the same order of magnitude, the first adapter line 711 and the second adapter line 712 need to transmit the same signal, so the first adapter line 711 is arranged on the first metal layer M1, and the second adapter line 712 is arranged on the second metal layer MG. The resistance values ​​of the film layers where the two are located are at the same order of magnitude, which can make the load size of the first adapter line 711 and the second adapter line 712 more consistent, so as to ensure the display uniformity of the display panel.

[0127] In some embodiments, the first adapter line 711 may be arranged on the second metal layer MG, and the second adapter line 712 may be arranged on the first metal layer M1, which is not limited in the embodiments of the present disclosure.

[0128] Fig.35 A partial structural diagram of another display panel provided in an embodiment of the present disclosure. Figure 6 , Figure 8 and Fig.35 Along the first direction X, the transition display area 2 includes at least two sub-transition display areas 21; a transparent display area 10 is arranged between two adjacent sub-transition display areas 21.

[0129] Fig.35 exemplarily shows that the display panel includes two transparent display areas 10 and three sub-transition display areas 21, and along the first direction X, the sub-transition display areas 21 are located on both sides of the transparent display area 10. It should be noted that the number of sub-transition display areas 21 in the transition display area 2 can be set according to the number of transparent display areas 10 in the display panel, ensuring that one transparent display area 10 is set between two adjacent sub-transition display areas 21, and the light-emitting element 5 in the transparent display area 10 can be driven to emit light by the pixel driving circuit 4 in the sub-transition display area 21. The specific number of the sub-transition display areas 21 is not limited in the embodiment of the present disclosure.

[0130] In some embodiments, the two sub-transition display areas 21 are mirror-symmetrical structures along the second direction, and the two mirror-symmetrical sub-transition display areas 21 together constitute a complete transparent display area 10, thereby reducing the gap in the conventional display area 3.

[0131] Optionally, combined Figure 6 , Figure 8 and Fig.35 , along the first direction X, the number of pixel driving circuits 4 in the first sub-transition display area 21 is equal to the number of pixel driving circuits 4 in the last sub-transition display area 21.

[0132] Figure 6 and Figure 8 Two sub-transition display areas 21 are exemplarily shown in the figure. The number of pixel driving circuits 4 in the first sub-transition display area 21 is, for example, 1 / 2N, and the number of pixel driving circuits 4 in the second sub-transition display area 21 is also, for example, 1 / 2N. Fig.35 In the figure, three sub-transition display areas 21 are exemplarily shown, the number of pixel driving circuits 4 in the first sub-transition display area 21 is, for example, 1 / 2N, and the number of pixel driving circuits 4 in the last sub-transition display area 21 is, for example, also 1 / 2N. Thus, a layout space can be reserved for the transparent display area 10 in the display panel, and multiple transparent display areas 10 can be arranged, which is convenient for the layout of the display panel.

[0133] Alternatively, if Fig.35 As shown, when the number of sub-transition display areas 21 is equal to or greater than three; along the first direction X, the number of pixel driving circuits 4 in the middle sub-transition display area 21 is equal to twice the number of pixel driving circuits 4 in the first sub-transition display area 21.

[0134] Fig.35 It is exemplarily shown that the number of sub-transition display areas 21 is, for example, three, and along the first direction X, the number of pixel drive circuits 4 in the middle sub-transition display area 21, that is, the second sub-transition display area 21, is, for example, N, and the number of pixel drive circuits 4 in the first sub-transition display area 21 is, for example, 1 / 2N. In some embodiments, when the number of sub-transition display areas 21 is, for example, four, the number of pixel drive circuits 4 in the middle two sub-transition display areas 21 can be, for example, both N, and the number of pixel drive circuits 4 in the first sub-transition display area 21 and the number of pixel drive circuits 4 in the last sub-transition display area 21 can be, for example, both 1 / 2N. Thus, by setting the number of pixel drive circuits 4 in different sub-transition display areas 21 along the first direction X, a layout space can be reserved for the transparent display area 10 in the first direction X, and multiple transparent display areas 10 can be laid out, which is convenient for the layout of the display panel.

[0135] Optionally, combined Figure 6 , Figure 8 , Fig.29 and Fig.35 The display panel further includes a second type of connection line 72; the second type of connection line 72 bypasses the transparent display area 10; the second type of connection line 72 connects the pixel driving circuits 4 with the same number of levels along the second direction Y in adjacent sub-transition display areas 21.

[0136] Specifically, the second type of connection 72 in the display panel bypasses the transparent display area 10 to avoid affecting the emission and incidence of light in the transparent display area 10. When the first sub-transition display area 21 and the second sub-transition display area 21 are, for example, adjacent sub-transition display areas 21, the first level pixel driving circuit 4 of the first sub-transition display area 21 is connected to the first level pixel driving circuit 4 of the second sub-transition display area 21 through the second type of connection 72, and the k-th level pixel driving circuit 4 of the first sub-transition display area 21 is connected to the k-th level pixel driving circuit 4 of the second sub-transition display area 21 through the second type of connection 72, where 1≤k≤the fourth level, and k is an integer. Performing the wiring of the display panel according to this rule is conducive to simplifying the wiring process and improving the manufacturing efficiency of the display panel.

[0137] Fig.36 A schematic diagram of the structure of a light-emitting repeating unit provided in an embodiment of the present disclosure, Fig.37 for Fig.29 A partial enlarged schematic diagram of the middle area B3. Optionally, in combination Fig.36 and Fig.37 In the transition display area 2, the transparent display area 10 and the wiring area 1, eight light-emitting elements 5 form a light-emitting repeating unit 51; the arrangement of the light-emitting repeating unit 51 in the transition display area 2 is the same as the arrangement of the light-emitting repeating unit 51 in the transparent display area 10. Fig.25 In the figure, only the light-emitting repeating unit 51 in the transparent display area 10 is shown as a rectangular frame.

[0138] Fig.38 A schematic diagram of a film layer of a light-emitting repeating unit provided in an embodiment of the present disclosure. Fig.36 and Fig.38 The light-emitting repeating unit 51 may include, for example, an anode layer RE, a pixel defining layer PDL, a photoresist layer BM, a color resist layer S1 and other film layers. The light-emitting repeating unit 51 is calculated according to the periphery of the anode RE.

[0139] Fig.36 It is exemplarily shown that a light-emitting repeating unit 51 is composed of eight light-emitting elements 5. By way of example, a light-emitting repeating unit 51 may have eight light-emitting sub-pixels, namely four green sub-pixels, two red sub-pixels and two blue sub-pixels. Some sub-pixels in adjacent light-emitting repeating units 51 may be shared. The sub-pixels in a light-emitting repeating unit 51 may be located in different areas, which is related to the specific arrangement method and the size of different areas, and the embodiments of the present disclosure are not limited to this.

[0140] Fig.37FIG. 2 exemplarily shows that in the transition display area 2 and the routing area 1, the arrangement of the light-emitting repeating units 51 is the same. For example, the light-emitting repeating units 51 in the routing area 1 and the light-emitting repeating units 51 in the transition display area 2 can be arranged in the same manner. Fig.36 The arrangement manner is used to reduce the display difference between the transition display area 2 and the routing area 1 caused by the different arrangement manners of the light-emitting repetitive units 51 in the routing area 1 and in the transition display area 2, thereby improving the display uniformity of the display panel. In addition, the same arrangement manner of the light-emitting repetitive units 51 in the routing area 1 and in the transition display area 2 also simplifies the preparation process of the display panel.

[0141] It should be noted that the number of light-emitting elements 5 included in a light-emitting repetitive unit 51 can be set according to the actual display requirements of the display panel, and the embodiment of the present disclosure does not limit this.

[0142] Fig.39 A schematic diagram of the structure of a driving repeating unit provided in an embodiment of the present disclosure. Figure 6 , Figure 8 , Fig.35 , Fig.37 and Fig.39 In the transition display area 2 and the regular display area 3 , at least one pixel driving circuit 4 constitutes a driving repetition unit 41 ; the arrangement of the driving repetition unit 41 in the transition display area 2 is the same as the arrangement of the driving repetition unit 41 in the regular display area 3 . Fig.37 It is shown in FIG. 2 that the transitional display area 2 includes the driving repetitive unit 41 and the light emitting repetitive unit 51 , and the transparent display area 10 includes only the light emitting repetitive unit 51 .

[0143] Fig.39 It is exemplarily shown that a driving repetition unit 41 includes four pixel driving circuits 4, and is arranged in the transition display area 2 and the normal display area 3. The arrangement of the driving repetition units 41 is the same. For example, in the normal display area 3, a driving repetition unit 41 includes four pixel driving circuits 4, and they are arranged in two rows and two columns. In the transition display area 2, a driving repetition unit 41 includes four pixel driving circuits 4, and they are also arranged in two rows and two columns.

[0144] In some embodiments, the driving repetition unit 41 includes, for example, a pixel driving circuit 4 arranged in an array of P×Q, and the corresponding relationship of the number of levels is that the number of levels of the driving repetition unit 41 in the first direction X is N, then the number of levels of the pixel driving circuit 4 in the first direction X is P×N, and the number of levels of the driving repetition unit 41 in the second direction Y is N, then the number of levels of the pixel driving circuit 4 in the second direction Y is Q×N; when P is equal to Q, the ratio between the number of levels of the driving repetition unit 41 in the first direction X and the second direction Y is equal to the ratio between the number of levels of the pixel driving circuit 4 in the first direction X and the second direction Y. P is the number of rows of the first signal output terminal along the second direction Y, and Q is the number of columns of the first signal output terminal along the first direction X. Figure 7 , Figure 7 exemplarily shows that one pixel driving circuit 4 drives two light emitting elements 5 to emit light, and the anodes of every two light emitting elements 5 are connected together, that is, four pixel driving circuits 4 drive eight light emitting elements 5 to emit light.

[0145] In this way, the driving difference between the transition display area 2 and the conventional display area 3 caused by the different arrangements of the driving repetitive units 41 can be reduced, thereby reducing the display difference caused by the driving difference, thereby improving the display uniformity of the display panel, and also simplifying the preparation process of the display panel.

[0146] It should be noted that the number of pixel driving circuits 4 included in a driving repetition unit 41 can be set according to the actual display requirements of the display panel, and the embodiment of the present disclosure does not limit this.

[0147] Optionally, combined Fig.36 and Fig.39 , along the second direction Y, the width of the driving repetitive unit 41 is equal to the width of the light-emitting repetitive unit 51 ; and / or, along the first direction X, the width of the driving repetitive unit 41 is smaller than the width of the light-emitting repetitive unit 51 .

[0148] Specifically, Fig.36 The width of the light-emitting repeating unit 51 along the second direction Y is shown in FIG. 5 as L, and the width L of the light-emitting repeating unit 51 along the second direction Y is shown in FIG. Fig.36 The vertical distance from the upper vertex of the light-emitting element 5 at the upper edge of the light-emitting repeating unit 51 to the lower vertex of the light-emitting element 5 at the lower edge of the light-emitting repeating unit 51 is in the direction of Fig.39 The figure exemplarily shows that the width of the driving repetitive unit 41 along the second direction Y is, for example, L. The width L of the driving repetitive unit 41 along the second direction Y is, for example, Fig.39The vertical distance between the top edge of the pixel driving circuit 4 located at the upper edge of the driving repeating unit 41 and the bottom edge of the pixel driving circuit 4 located at the lower edge of the driving repeating unit 41 is measured in the direction of the driving repeating unit 41. Thus, the width of the driving repeating unit 41 and the width of the light emitting repeating unit 51 along the second direction Y can be made equal within a certain error range. In addition, the embodiment of the present disclosure sets the width of the driving repeating unit 41 along the second direction Y to be smaller than the width of the light emitting repeating unit 51 along the second direction Y. Fig.32 exemplarily shows that the width of the light-emitting repeating unit 51 along the second direction Y is, for example, L. Fig.34 exemplarily shows that the width of the driving repetitive unit 41 along the second direction Y is, for example, L / 2, and exemplarily, L / 2 is equal to L5 in the above embodiment. By setting the width of the driving repetitive unit 41 along the first direction X to be smaller than the width of the light emitting repetitive unit 51 along the first direction X, the driving repetitive unit 41 can be omitted from the transparent display area 10, leaving space for the layout of the transparent display area 10 in the display panel.

[0149] Optionally, combined Figure 7 , Fig.36 and Fig.39 , the pixel driving circuit 4 in the transition display area 2 is a pixel driving circuit 4 with a drive width of M1; along the first direction X, the width of the driving repetitive unit 41 is 1 / M1 of the width of the light-emitting repetitive unit 51; wherein M1≥2, and M1 is an integer.

[0150] For example, Figure 7 FIG. 4 exemplarily shows a pixel driving circuit 4 driving two light emitting elements 5 to emit light, and the anodes of each two light emitting elements 5 are connected together, that is, Fig.39 The four pixel driving circuits 4 shown in FIG. Figure 7 When the eight light-emitting elements 5 in the transition display area 2 emit light, and the pixel driving circuit 4 in the transition display area 2 is a one-drive-two pixel driving circuit 4, along the first direction X, the width of the driving repetitive unit 41 is 1 / 2 of the width of the light-emitting repetitive unit 51, thereby reducing the space of the display panel occupied by the driving repetitive unit 41, and more space can be provided for arranging the transparent display area 10. It should be noted that the specific value of M1 can be set according to the actual display requirements of the display panel, and the embodiments of the present disclosure are not limited to this.

[0151] Optionally, combined Figure 36 to Figure 39, the driving repetition units 41 in the transition display area 2 are connected one-to-one with the light-emitting repetition units 51 in the transition display area 2 and the transparent display area 10; in the driving repetition units 41 in the transition display area 2, the number of pixel driving circuits 4 in each driving repetition unit 41 is a first number; in the light-emitting repetition units 51 in the transition display area 2 and the transparent display area 10, the number of light-emitting elements 5 in each light-emitting repetition unit 51 is a second number; the first number is less than the second number.

[0152] Specifically, Fig.37 As shown, part of the driving repetitive units 41 in the transition display area 2 is electrically connected to the light-emitting repetitive units 51 of the transition display area 2, and is used to drive the light-emitting elements 5 in the transition display area 2 to emit light. Part of the driving repetitive units 41 in the transition display area 2 is electrically connected to the light-emitting repetitive units 51 of the transparent display area 10, and is used to drive the light-emitting elements 5 in the transparent display area 10 to emit light. Therefore, there is no need to set the driving repetitive units 41 in the transparent display area 10, and the light-emitting elements 5 in the transparent display area 10 can also emit light.

[0153] For example, Fig.36 FIG. 5 exemplarily shows that a light-emitting repeating unit 51 is composed of eight light-emitting elements 5. Fig.39 It is exemplarily shown that a driving repetition unit 41 includes four pixel driving circuits 4, so that one pixel driving circuit 4 can drive two light-emitting elements 5 to emit light. Therefore, the number of pixel driving circuits 4 in each driving repetition unit 41 is less than the number of light-emitting elements 5 in each light-emitting repetition unit 51, thereby reducing the number of pixel driving circuits 4, thereby reducing the space of the display panel occupied by the pixel driving circuits 4, and providing more space for the display panel to arrange the transparent display area 10.

[0154] Optionally, combined Fig.36 and Fig.37 , the pixel driving circuit 4 in the transition display area 2 is a pixel driving circuit 4 that drives M2; the first number is 1 / M2 of the second number; wherein M2≥2, and M2 is an integer.

[0155] For example, in combination Fig.36 and Fig.37 The pixel driving circuit 4 in the transition display area 2 is, for example, a one-drive-two pixel driving circuit 4, that is, one pixel driving circuit 4 can drive two light-emitting elements 5 to emit light. Then the number of pixel driving circuits 4 in each driving repetition unit 41 is half the number of light-emitting elements 5 in each light-emitting repetition unit 51. By setting a one-drive M2 pixel driving circuit 4, the pixel driving circuit 4 in the transition display area 2 can be reduced by a multiple of M2, thereby reducing the number of pixel driving circuits 4, and further reducing the space of the display panel occupied by the pixel driving circuit 4.

[0156] It should be noted that M2 can be the same integer as M1, or an integer different from M1, and is set according to actual display requirements of the display panel, which is not limited in the embodiments of the present disclosure.

[0157] Alternatively, if Figure 7 and Fig.39 As shown, the pixel driving circuits 4 in the driving repetition unit 41 are arranged in a P×Q array; wherein, M2×P×Q=R; R represents the second number, P≥1, Q≥1, and P and Q are both integers.

[0158] For example, Figure 7 and Fig.39 It is exemplarily shown that the pixel driving circuits 4 in a driving repetition unit 41 are arranged in a 2×2 array, and the pixel driving circuits 4 in the transition display area 2 provided in the embodiment of the present disclosure are one-drive-two pixel driving circuits 4, then the number of light-emitting elements 5 in each light-emitting repetition unit 51 is R=2×2×2=8, so one driving repetition unit 41 provided in the embodiment of the present disclosure can drive eight light-emitting elements 5 to emit light, greatly reducing the number of pixel driving circuits 4.

[0159] It should be noted that P and Q can be the same integer or different integers, and the specific numbers of M2, P and Q can be set according to actual display requirements, which is not limited in the embodiments of the present disclosure.

[0160] Optionally, combined Fig.37 and Fig.39 The pixel driving circuit 4 includes a first signal output terminal A1, which is connected to the light emitting element 5; along the second direction Y, the first signal output terminal A1 is located on a side of the pixel driving circuit 4 close to the conventional display area 3.

[0161] Specifically, combined Fig.37 and Fig.39 The pixel driving circuit 4 is electrically connected to the light emitting element 5 through the first signal output terminal A1, and outputs a driving signal to the light emitting element 5 to drive the light emitting element 5 to emit light. In addition, since the pixel driving circuit 4 has many components, a complex structure, and occupies a large space, according to the layout of the components in the pixel driving circuit 4, the first signal output terminal A1 can be set to the side of the pixel driving circuit 4 close to the second conventional display area 32 along the second direction Y, so as to reduce the process difficulty of wiring in the display panel.

[0162] Alternatively, if Fig.39 As shown, one driving repetition unit 41 includes P×Q first signal output terminals A1 ; along the second direction Y, the distance between adjacent first signal output terminals A1 is equal to the width of one pixel driving circuit 4 .

[0163] Specifically, the pixel driving circuits 4 in a driving repetition unit 41 are arranged in a P×Q array, for example, and each pixel driving circuit 4 includes a first signal output terminal A1 , and each driving repetition unit 41 includes P×Q first signal output terminals A1 . Fig.39 exemplarily shows that the pixel driving circuits 4 in the driving repetition unit 41 are arranged in a 2×2 array, for example, and one driving repetition unit 41 includes 2×2 first signal output terminals A1, that is, the first signal output terminals A1 in one driving repetition unit 41 are evenly divided into two rows, and along the second direction Y, the distance between adjacent first signal output terminals A1 is, for example, L / 2, and the width of one pixel driving circuit 4 is, for example, also L / 2. Therefore, the average arrangement of the first signal output terminals A1 reduces the process difficulty of wiring in the display panel.

[0164] Alternatively, if Fig.36 As shown, a light-emitting repetitive unit 51 includes P×Q first signal input terminals A2, which are electrically connected to the first signal output terminals A1 one by one; along the second direction Y, the distance between adjacent first signal input terminals A2 is equal to the width of a pixel driving circuit 4.

[0165] Specifically, Fig.36 As shown, in order to realize the corresponding electrical connection between the light-emitting repetition unit 51 and the driving repetition unit 41, according to the P×Q first signal output terminals A1 in the driving repetition unit 41, the light-emitting repetition unit 51 is provided with P×Q first signal input terminals A2, so that the first signal input terminals A2 are electrically connected to the first signal output terminals A1 in a one-to-one correspondence, and the driving repetition unit 41 drives the light-emitting repetition unit 51 to emit light. Fig.36 It is exemplarily shown that along the second direction Y, the distance between adjacent first signal input terminals A2 is, for example, L / 2. By setting the distance between adjacent first signal input terminals A2 to be equal to the width of a pixel driving circuit 4, the first signal input terminals A2 of the light-emitting repetitive unit 51 are evenly arranged, thereby reducing the process difficulty of wiring in the display panel.

[0166] Alternatively, if Fig.36 As shown, a light-emitting repetition unit 51 includes P×Q groups of light-emitting elements 5, each group of light-emitting elements 5 includes M2 light-emitting elements 5 of the same color; the display panel also includes an input signal connection line 74; the input signal connection line 74 is connected between the M2 light-emitting elements 5 in each group of light-emitting elements 5.

[0167] Specifically, Fig.36As shown, since one light-emitting repetitive unit 51 includes P×Q first signal input terminals A2, the light-emitting repetitive unit 51 includes P×Q groups of light-emitting elements 5, that is, one first signal input terminal A2 is correspondingly arranged with one group of light-emitting elements 5, and a driving signal is input to one group of light-emitting elements 5 through one first signal input terminal A2. In addition, each group of light-emitting elements 5 is arranged to include M2 ​​light-emitting elements 5 of the same color, so that the light-emitting elements 5 of the same color are close to each other and are all driven to emit light by the same pixel driving circuit 4, so that the light-emitting brightness of the light-emitting elements 5 of the same color is also similar, thereby improving the display uniformity of the display panel.

[0168] In some embodiments, the display panel further includes an input signal connection line 74, and M2 light-emitting elements 5 in each group of light-emitting elements 5 are electrically connected through the input signal connection line 74, which is used to transmit the signal output by the pixel driving circuit 4 to the M2 light-emitting elements 5. Fig.36 exemplarily shows that at least two adjacent light emitting elements 5 are electrically connected via an input signal connection line 74. Fig.36 As shown, at least part of the input signal line 74 extends non-linearly, so that at least part of the input signal line 74 extends irregularly, weakening the diffraction phenomenon caused by ambient light entering through the transparent display area 10, thereby reducing the starburst in the image obtained by using the under-screen camera.

[0169] Fig.40 A schematic diagram of a film structure of a light-emitting repeating unit provided in an embodiment of the present disclosure, Fig.41 Schematic diagram of the film structure from the transition display area to the transparent display area provided in the embodiment of the present disclosure. Fig.13 , Fig.36 , Fig.40 and Fig.41 The display panel further includes a base substrate PI and a functional film layer 13 stacked on one side of the base substrate; the functional film layer 13 for forming the input signal connection 74 is arranged on the same layer as the functional film layer 13 for forming the first signal input terminal A2.

[0170] It should be noted that Fig.36 Only some transistors are shown to illustrate the connection from the transition display area 2 to the transparent display area 10. For specific film layer schematics, please refer to Fig.13 .

[0171] Specifically, combined Fig.13 , Fig.36 , Fig.40 and Fig.41The functional film layer 13 for forming the input signal connection 74 and the functional film layer 13 for forming the first signal input terminal A2 are arranged on the same layer, that is, the port on the functional film layer 13 is used as the first signal input terminal A2, and this part of the input signal connection 74 and the first signal input terminal A2 can be manufactured in the same manufacturing process, and there is no need to electrically connect the input signal connection 74 and the first signal input terminal A2 by punching, which is conducive to simplifying the connection between this part of the input signal connection 74 and the first signal input terminal A2, and simplifying the manufacturing process of the display panel.

[0172] Exemplarily, the functional film layer 13 may include a transparent conductive material, for example, the transparent conductive material may include at least one of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (In2O3), gallium oxide (IGO) and aluminum zinc oxide (AZO). The above transparent conductive materials can not only realize the electrical connection between the pixel driving circuit 4 and the light emitting element 5, but also will not affect the emission and incidence of light in the transparent display area 10.

[0173] Alternatively, if Fig.37 As shown, along the second direction Y, the P×Q first signal output terminals A1 in a driving repetition unit 41 include P rows of signal output terminals on the first plane; the P×Q first signal input terminals A2 in a light-emitting repetition unit 51 include P rows of signal input terminals on the second plane; in the driving repetition unit 41 and the light-emitting repetition unit 51 having a connection relationship, the S-row signal output terminal A1 and the S-row signal input terminal A2 are sequentially arranged in the order from 1 to P; 1≤S≤P, and S is an integer, and the first plane is parallel to the second plane.

[0174] Specifically, Fig.37 As shown, the driving repetition unit 41 includes, for example, P rows of first signal output terminals A1, each row of first signal output terminals A1 includes Q first signal output terminals A1, the light-emitting repetition unit 51 includes, for example, P rows of first signal input terminals A2, each row of first signal input terminals A2 includes Q first signal input terminals A2, and the S-th row of first signal output terminals A1 in the driving repetition unit 41 is electrically connected to the S-th row of first signal input terminals A2 in the light-emitting repetition unit 51 to realize signal transmission.

[0175] Exemplarily, the first signal output terminal A1 of the first row is electrically connected to the first signal input terminal A2 of the first row, and the first signal output terminal A1 of the second row is electrically connected to the first signal input terminal A2 of the second row. Thus, by sequentially arranging the first signal output terminal A1 of the Sth row and the first signal input terminal A2 of the Sth row, the arrangement of the first signal output terminal A1 and the first signal input terminal A2 is made more regular, thereby reducing the wiring difficulty of the display panel.

[0176] Fig.42A partial structural diagram of another display panel provided in an embodiment of the present disclosure. Fig.37 and Fig.42 , along the second direction Y, the minimum distance between the projections of the first signal input terminal A2 and the first signal output terminal A1 perpendicular to the substrate is greater than or equal to the process distance, and less than or equal to the first preset distance; wherein the process distance is the minimum distance that satisfies the non-interference of the graphics between the projections of the first signal input terminal A2 and the first signal output terminal A1 perpendicular to the substrate, and the first preset distance is 1 / 4 of the width of the pixel driving circuit 4.

[0177] Exemplarily, the first signal input terminal A2 and the first signal output terminal A1 satisfy the non-interference between the patterns, that is, the minimum distance between the two patterns that are not connected is s, Fig.42 exemplarily shows that along the second direction Y, the minimum distance d between the second row of first signal input terminals A2 and the first row of first signal output terminals A1 is, for example, the sum of the process distance s and the via diameter h. In some embodiments, the process distance may be, for example, 2 microns, so the minimum distance may be set to be greater than or equal to the process distance. In addition, the first preset distance may also be set to be less than or equal to 1 / 4 of the width of the pixel driving circuit 4, thereby making the distance between the first signal input terminal A2 and the first signal output terminal A1 along the second direction Y as small as possible under the condition that the process allows, so that the center distance between the first signal output terminal A1 of a row below the driving repeating unit 41 and the first signal input terminal A2 of a row below the light-emitting repeating unit 51 along the second direction Y is as large as possible, thereby allowing as many connecting lines as possible to be arranged between the first signal input terminal A2 and the first signal output terminal A1, which helps to increase the size of the transparent display area 10.

[0178] Alternatively, if Fig.42 As shown, along the second direction Y, the maximum distance between the first signal input terminal A2 and the first signal output terminal A1 is greater than or equal to a second preset distance, and the second preset distance is 1 / 3 of the width of the pixel driving circuit 4 .

[0179] Fig.42 It is exemplarily shown that along the second direction Y, the maximum distance between the second row first signal input terminal A2 and the second row first signal output terminal A1 is, for example, L / 2-d, and the maximum distance is greater than or equal to 1 / 3 of the width of the pixel driving circuit 4. By increasing the maximum distance between the first signal input terminal A2 and the first signal output terminal A1, it is possible to arrange as many connecting lines as possible between the first signal input terminal A2 and the first signal output terminal A1, which helps to increase the size of the transparent display area 10.

[0180] Alternatively, if Fig.42 As shown, the sum of the maximum distance and the minimum distance is equal to the width of the pixel driving circuit 4 along the second direction Y.

[0181] Fig.42 It is exemplarily shown that the maximum distance is L / 2-d and the minimum distance is d, then the sum of the maximum distance and the minimum distance is L / 2, which is equal to the width of the pixel driving circuit 4 along the second direction Y, thereby facilitating the arrangement of more connecting lines between the first signal input terminal A2 and the first signal output terminal A1, and helping to increase the size of the transparent display area 10 in the display panel.

[0182] It should be noted that the maximum distance, the minimum distance and the specific width of the pixel driving circuit 4 along the second direction Y can be set according to the actual layout requirements of the display panel, and the embodiment of the present disclosure does not limit the specific size.

[0183] Optionally, combined Figure 7 and Fig.42 The display panel also includes a transmission signal connection line 73, through which the first signal input terminal A2 and the first signal output terminal A1 are connected one-to-one; the transmission signal connection line 73 is arranged between the first signal output terminal A1 and the first signal input terminal A2 of the same row adjacent to each other along the second direction Y.

[0184] Exemplarily, the transmission signal connection line 73 may include, for example, multiple conductive film layers, for example, Fig.13 It is understood that the transmission signal connection line 73 can be located in the first conductive layer ITO1, the second conductive layer ITO2 or the third conductive layer ITO3, and the first signal output terminal A1 can be, for example, a port of a via hole between the fourth metal layer M3 and the first conductive layer ITO1.

[0185] Specifically, combined Figure 7 and Fig.42 The signal output by the pixel driving circuit 4 is transmitted to the light-emitting element 5 through the first signal input terminal A2, the transmission signal connection line 73 and the first signal output terminal A1, and the transmission signal connection line 73 is arranged, for example, between the first signal output terminal A1 of the S row and the first signal input terminal A2 of the S row. By increasing the distance between the first signal output terminal A1 and the first signal input terminal A2 as much as possible, more transmission signal connections 73 can be arranged, avoiding the transmission signal connections 73 occupying the space of the transparent display area 10, leaving more arrangement space for the transparent display area 10 of the display panel.

[0186] Fig.43 A partial structural diagram of another display panel provided in an embodiment of the present disclosure. Figures 2 to 6 , Figure 8 , Fig.29 , Fig.35 and Fig.42 The transparent display area 10 includes at least one sensor setting area arranged along the second direction Y.

[0187] Specifically, 2 to Figure 6 , Figure 8 , Fig.29 , Fig.35 exemplarily shows that along the second direction Y, the transparent display area 10 includes a sensor setting area, Fig.43 FIG. 4 exemplarily shows that along the second direction Y, the transparent display area 10 may include two sensor setting areas. Fig.43 exemplarily shows that along the second direction, the number of levels of the pixel driving circuit 4 of the transition display area 2 corresponding to each sensor setting area is, for example, N levels, then the number of levels of the pixel driving circuit 4 of the transition display area 2 corresponding to the two sensor setting areas is, for example, 2N levels, and the number of levels of the pixel driving circuit 4 of the conventional display area 3 is, for example, 2N levels. In other embodiments, there are two sensor setting areas arranged along the second direction Y, and the number of levels of the pixel driving circuit 4 of the transition display area 2 set in one sensor setting area is, for example, n1 levels, and the number of levels of the pixel driving circuit 4 of the transition display area 2 set in the other sensor setting area is, for example, n2 levels, then the number of levels of the pixel driving circuit 4 of the transition display area 2 corresponding to the two sensor setting areas is, for example, (n1+n2) levels.

[0188] It should be noted that the number of sensor setting areas in the transparent display area 10 can be set according to the actual use requirements of the display panel, and the embodiment of the present disclosure is not limited to this.

[0189] Exemplarily, a sensor may be disposed in at least one sensor setting area 10, and the sensor may be, for example, an image acquisition device for acquiring external image information. In some embodiments, the sensor may be a complementary metal oxide semiconductor (CMOS) image acquisition device, and in other embodiments, it may be a charge-coupled device (CCD) image acquisition device or other forms of image acquisition devices. It is understood that the sensor may not be limited to an image acquisition device, and in some embodiments, the sensor may also be an infrared sensor, a proximity sensor, a fingerprint sensor or other sensors.

[0190] The display panel provided by the embodiment of the present disclosure sets the difference between the first level and the second level to be smaller than the preset level, so that the level of the pixel driving circuit in the first conventional display area is close to the level of the pixel driving circuit in the transition display area, thereby avoiding the problem of color cast of the display panel caused by the transition display area and the conventional display area due to excessive difference in the level of the pixel driving circuit between the transition display area and the conventional display area in the second direction. This not only leaves layout space for the transparent display area, but also improves the display effect of the display panel.

[0191] Based on the same inventive concept, the embodiment of the present disclosure also provides a display device, including a display panel as in any one of the above display panel embodiments. Therefore, the display device has the technical features of the display panel provided in the embodiment of the present disclosure, and can achieve the beneficial effects of the display panel provided in the embodiment of the present disclosure. For the similarities, refer to the above description of the display panel provided in the embodiment of the present disclosure, and no further description is given here.

[0192] For example, Fig.44 Schematic diagram of a display device provided by an embodiment of the present disclosure. Fig.44 As shown, the display device provided by the embodiment of the present disclosure includes the display panel 200 provided by any of the above embodiments of the present disclosure. Fig.44 The embodiment only takes a mobile phone as an example to illustrate the display device. It can be understood that the display device provided in the embodiment of the present application can be any electronic product with a display function, including but not limited to the following categories: mobile phones, televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, medical equipment, industrial control equipment, touch interactive terminals, etc. The embodiment of the present invention does not make special limitations on this.

[0193] The display device provided by the embodiment of the present disclosure includes the above-mentioned display panel, and thus can solve the same technical problems as the above-mentioned display panel embodiment and achieve the same technical effects, which will not be repeated here.

[0194] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0195] The above are only specific embodiments of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized in that: include: A transparent display area, a wiring area, a transition display area and a regular display area, wherein the transition display area at least partially surrounds the transparent display area, the regular display area at least partially surrounds the transition display area and the transparent display area, the light transmittance of the transparent display area is greater than the light transmittance of the regular display area, and the wiring area is located between the transparent display area and the transition display area, and between the transition display area and the regular display area; A pixel driving circuit and a light-emitting element electrically connected to the pixel driving circuit, wherein the pixel driving circuit is arranged in the transition display area and the regular display area, and the light-emitting element is arranged in the transparent display area, the wiring area, the transition display area, and the regular display area; The conventional display area includes a first conventional display area; along a first direction, the transitional display area is located between the first conventional display area and the transparent display area; in a second direction, the number of stages of the pixel driving circuits in the first conventional display area is a first number, and the number of stages of the pixel driving circuits in the transitional display area is a second number; the first direction is the direction from the transitional display area to the transparent display area, and the second direction intersects with the first direction; The difference between the first and second levels is smaller than a preset level, and the preset level is equal to or smaller than 1 / 2 of the first level.

2. The display panel according to claim 1, characterized in that: Among the pixel driving circuits in the transitional display area, there is at least one pixel driving circuit that is electrically connected to at least two of the light-emitting elements in the transparent display area and / or the wiring area.

3. The display panel according to claim 1, characterized in that: The conventional display area includes a second conventional display area, and along the second direction, the second conventional display area is located on one side of the transparent display area and the transition display area; along the first direction, the pixel driving circuits in the second conventional display area have at least N3 groups; a group of the pixel driving circuits includes N4 pixel driving circuits; wherein N3 is equal to the number of levels of the pixel circuits located in the transition display area along the first direction, N4 ≥ 1, and N4 is an integer; Along the first direction, the j-th pixel driving circuit in each group of the pixel driving circuits is connected to the pixel driving circuit in the transition display area; Wherein, 1≤j≤N4, and j is an integer.

4. The display panel according to claim 1, characterized in that: The pixel driving circuit in the transition display area has a first width in the first direction and a second width in the second direction; The pixel driving circuit of the regular display area has a third width in the first direction and a fourth width in the second direction; Wherein, the first width, the second width, the third width and the fourth width satisfy: 90%L1≤L3≤110%L1, 90%L2≤L4≤110%L2; Wherein, L1 represents the first width, L2 represents the second width, L3 represents the third width, and L4 represents the fourth width; the second direction intersects with the first direction, and both are located in the plane where the display panel is located.

5. The display panel according to claim 1, characterized in that: The second order is equal to the first order; The pixel driving circuit in the transition display area is connected in a one-to-one correspondence with the pixel driving circuit in the first normal display area according to the same number of stages.

6. The display panel according to any one of claims 1, characterized in that: Along the first direction, there is a first gap between the transitional display area and the normal display area, and along the second direction, there is a second gap between the pixel driving circuits in the transitional display area and the normal display area; Wherein, the first gap and the second gap satisfy: G1>G2; Wherein, G1 represents the width of the first gap in the first direction, and G2 represents the width of the second gap in the second direction.

7. The display panel according to claim 6, characterized in that: The pixel driving circuit of the conventional display area has a fourth width in the second direction; and satisfies: G1<2L4; Wherein, L4 represents the fourth width.

8. The display panel according to claim 6, characterized in that: A power signal line is also arranged in the first gap; The power signal input terminal of the pixel driving circuit is connected to the power signal line.

9. The display panel according to claim 8, characterized in that: It also includes a scanning signal line, wherein the scanning signal line is electrically connected to a scanning signal receiving end of the pixel driving circuit; In the first gap, in a direction perpendicular to the plane where the display panel is located, the power signal line is located between the scanning signal line and the light emitting element.

10. The display panel according to claim 8, characterized in that: The power signal line includes a hollow area and a non-hollow area at least partially surrounding the hollow area.

11. The display panel according to claim 8, characterized in that: The area of ​​the hollowed-out region is a first area, the area of ​​the non-hollowed-out region is a second area, and the first area and the second area satisfy the following: 20%≤S1 / (S1+S2)≤80%; Wherein, S1 represents the first area, and S2 represents the second area.

12. The display panel according to claim 7, characterized in that: In the conventional display area, the display panel further includes data lines extending along the second direction and arranged along the first direction; The first-type connection lines passing through the second gaps are connected to the data lines, and at least part of the first-type connection lines and the data lines are arranged in different layers; The first type of connection line passing through the second gap includes a first adapter line and a second adapter line; The first adapter wire and the second adapter wire are arranged at different layers.

13. The display panel according to claim 12, characterized in that: In the plane where the display panel is located, the first adapter wires and the second adapter wires are alternately arranged.

14. The display panel according to claim 12, characterized in that: Also includes a base substrate, a first metal layer and a second metal layer, wherein the first metal layer is located between the base substrate and the second metal layer; The first metal layer includes the first patch cord, and the second metal layer includes the second patch cord; The resistance value of the first metal layer is in the same order of magnitude as the resistance value of the second metal layer.

15. The display panel according to claim 1, characterized in that: Along the first direction, the transition display area includes at least two sub-transition display areas; a transparent display area is arranged between two adjacent sub-transition display areas, and along the first direction, the number of pixel driving circuits in the first sub-transition display area is equal to the number of pixel driving circuits in the last sub-transition display area.

16. The display panel according to claim 15, characterized in that: When the number of the sub-transition display areas is equal to or greater than three; Along the first direction, the number of pixel driving circuits in the middle sub-transition display area is equal to twice the number of pixel driving circuits in the first sub-transition display area.

17. The display panel according to claim 1, characterized in that: In the transitional display area and the transparent display area, eight light-emitting elements form a light-emitting repeating unit; The arrangement mode of the light-emitting repeating units in the transitional display area is the same as the arrangement mode of the light-emitting repeating units in the transparent display area.

18. The display panel according to claim 17, characterized in that: In the transition display area and the normal display area, four pixel driving circuits form a driving repetition unit; The arrangement mode of the driving repetitive units in the transitional display area is the same as the arrangement mode of the driving repetitive units in the normal display area.

19. The display panel according to claim 18, characterized in that: Along the second direction, the width of the driving repeating unit is equal to the width of the light-emitting repeating unit; And / or, along the first direction, the width of the driving repetitive unit is smaller than the width of the light-emitting repetitive unit.

20. The display panel according to claim 19, characterized in that: The width of the light-emitting repeating unit in the first direction and the second direction is equal, Along the first direction, the width of the driving repetitive unit is 1 / 2 of the width of the light-emitting repetitive unit.

21. The display panel according to claim 18, characterized in that: One of the driving repetitive units includes P×Q of the first signal output terminals; Along the second direction, the distance between adjacent first signal output terminals is equal to the width of one pixel driving circuit; wherein P is the number of rows of the first signal output terminals along the second direction, and Q is the number of columns of the first signal output terminals along the first direction.

22. The display panel according to claim 21, characterized in that: One of the light-emitting repeating units comprises P×Q first signal input terminals, and the first signal input terminals are electrically connected to the first signal output terminals in a one-to-one correspondence; Along the second direction, the distance between adjacent first signal input terminals is equal to the width of one pixel driving circuit.

23. The display panel according to claim 22, characterized in that: One of the light-emitting repeating units includes P×Q groups of the light-emitting elements, and each group of the light-emitting elements includes M2 light-emitting elements of the same color; The display panel also includes an input signal connection line; The input signal line is connected between M2 light-emitting elements in each group of light-emitting elements.

24. The display panel according to claim 23, characterized in that: It also includes a base substrate and a functional film layer stacked on one side of the base substrate; The functional film layer used to form the input signal connection line is arranged in the same layer as the functional film layer used to form the first signal input terminal.

25. The display panel according to claim 22, characterized in that: Along the second direction, The P×Q first signal output terminals in one of the driving repetitive units include P rows of signal output terminals on the first plane; The P×Q first signal input terminals in one of the light-emitting repeating units include P rows of signal input terminals on the second plane; In the driving repetitive unit and the light-emitting repetitive unit that are connected, the S-row signal output terminal and the S-row signal input terminal are arranged in sequence from 1 to P; 1≤S≤P, and S is an integer, and the first plane is parallel to the second plane.

26. The display panel according to claim 22, characterized in that: Along the second direction, the minimum distance between the projections of the first signal input terminal and the first signal output terminal perpendicular to the substrate is greater than or equal to the process distance, and less than or equal to the first preset distance; The process distance is a minimum distance that satisfies the non-interference of the patterns between the projections of the signal input terminal and the signal output terminal perpendicular to the substrate, and the first preset distance is 1 / 4 of the width of the pixel driving circuit.

27. The display panel according to claim 26, characterized in that: Along the second direction, a maximum distance between the first signal input terminal and the first signal output terminal is greater than or equal to a second preset distance, and the second preset distance is 1 / 3 of a width of the pixel driving circuit.

28. A display device, characterized in that: A display panel comprising any one of claims 1-27.

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