Display panel and display device

Abstract

The present invention discloses a display panel and a display device, wherein the display panel comprises an optical component area, wherein the optical component area comprises a compensation structure, a connection structure and a first light-emitting element; the compensation structure comprises a first compensation structure, wherein the first compensation structure comprises at least one first compensation wiring; the connection structure comprises a connection wiring, wherein the connection wiring is electrically connected to the first light-emitting element; wherein an extension direction of the first compensation wiring intersects with an extension direction of the connection wiring, and the above technical scheme is adopted, wherein a compensation structure is arranged in the optical component area, and further a compensation structure is arranged wherein the compensation structure comprises a first compensation structure, wherein the first compensation structure comprises at least one first compensation wiring, and an extension direction of the first compensation wiring is arranged wherein the extension direction of the connection wiring intersects with an extension direction of the connection wiring, thereby compensating for or eliminating a diffraction problem caused by the connection wiring, and thereby improving the imaging quality of the optical component.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] With the development of electronic products such as mobile phones, including display panels and cameras, people's requirements for these products are no longer limited to basic communication functions, but also turn to design, artistry and good visual experience. For example, electronic products with a high screen-to-body ratio are becoming more and more popular. Among them, full screen has become an important development direction for electronic products. The earpiece, ambient light sensor, proximity light sensor, etc. have been successfully hidden under the screen, but the front camera is difficult to hide.

[0003] In order to realize a truly full screen, the front camera can be set under the screen. However, there are many problems that need to be solved in a full screen with the front camera set under the screen. Summary of the invention

[0004] The present invention provides a display panel and a display device to solve the problem of arranging a front camera under a full-screen display in the related art.

[0005] In a first aspect, an embodiment of the present invention provides a display panel, comprising an optical component area, wherein the optical component area comprises a compensation structure, a connection structure and a first light-emitting element;

[0006] The compensation structure includes a first compensation structure, and the first compensation structure includes at least one first compensation trace;

[0007] The connection structure includes a connection wire, and the connection wire is electrically connected to the first light-emitting element;

[0008] Wherein, an extension direction of the first compensation line intersects with an extension direction of the connection line.

[0009] In a second aspect, based on the unified inventive concept, an embodiment of the present invention further provides a display device, comprising the display panel described in the first aspect.

[0010] The display panel provided by the embodiment of the present invention has connecting wires in the optical component area. The setting of the connecting wires may cause diffraction problems, thereby affecting the imaging quality of the optical components set in the optical component area. Therefore, the embodiment of the present invention sets a compensation structure in the optical component area. The compensation structure is further set to include a first compensation structure. The first compensation structure includes at least one first compensation wire. By setting the extension direction of the first compensation wire to intersect with the extension direction of the connecting wire, the diffraction problem caused by the connecting wire is compensated or eliminated, thereby improving the imaging quality of the optical component. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a display panel in the related art;

[0012] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A;

[0013] Figure 3 A schematic diagram of the structure of a display panel provided by an embodiment of the present invention;

[0014] Figure 4 for Figure 3 A schematic diagram of an enlarged structure at B in the middle;

[0015] Figure 5 for Figure 3 Another enlarged structural diagram at B in the middle;

[0016] Figure 6 for Figure 3 Another enlarged structural diagram at B in the middle;

[0017] Figure 7 for Figure 4 A schematic diagram of the cross-sectional structure along the section line C-C';

[0018] Figure 8 A schematic diagram of a pixel circuit according to an embodiment of the present invention

[0019] Fig. 9 A schematic diagram of the structure of a display device provided by an embodiment of the present invention;

[0020] Fig.10 A schematic cross-sectional structure diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. It will be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings. It is obvious to those skilled in the art that various modifications and changes can be made in the present invention without departing from the spirit or scope of the present invention. Therefore, the present invention is intended to cover modifications and changes of the present invention that fall within the scope of the corresponding claims (technical solutions for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present invention can be combined with each other without contradiction.

[0022] Figure 1 is a schematic diagram of the structure of a display panel in the related art, Figure 2 for Figure 1The enlarged structural diagram at A is shown in Figure 1 and Figure 2 As shown, the display panel includes an optical component area 11' and a normal display area 12', wherein the optical component area 11' can be understood as a sensor reserved area, such as a camera reserved area. Therefore, in addition to having a normal display function, the optical component area 11' must also have a good light transmission effect to ensure that external light can pass through the optical component area 11' into the camera. Since there are various connecting wires 112' in the optical component area 11', the connecting wires 112' can be electrically connected to the first light-emitting element 113' to transmit display signals to the first light-emitting element 113'. The setting of the connecting wires 112' will cause diffraction, deteriorate the imaging quality of the camera, and affect the normal imaging function of the display panel.

[0023] Based on the above technical problems, in the embodiment of the present invention, a display panel is provided including an optical component area, the optical component area includes a compensation structure, a connection structure and a first light-emitting element; the compensation structure includes a first compensation structure, the first compensation structure includes at least one first compensation trace; the connection structure includes a connection trace, the connection trace is electrically connected to the first light-emitting element; wherein the extension direction of the first compensation trace intersects with the extension direction of the connection trace. By adopting the above technical solution, by setting the extension direction of the first compensation trace to intersect with the extension direction of the connection trace, the diffraction problem caused by the connection trace is compensated or eliminated, and the imaging quality of the optical component is improved.

[0024] The above is the main idea of ​​the present invention. The technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] Figure 3 A schematic diagram of the structure of a display panel provided by an embodiment of the present invention, Figure 4 for Figure 3 A schematic diagram of an enlarged structure at B in the figure. Figure 5 for Figure 3 Another enlarged structural diagram at B in the middle, combined with Figure 3 , Figure 4 and Figure 5As shown, the display panel 10 provided in the embodiment of the present invention includes an optical component area 11, the optical component area 11 includes a compensation structure 111, a connection structure 112 and a first light-emitting element 113; the compensation structure 111 includes a first compensation structure 111A, the first compensation structure 111A includes at least one first compensation trace 1111; the connection structure 112 includes a connection trace 1121, and the connection trace 1121 is electrically connected to the first light-emitting element 113; wherein, an extension direction of the first compensation trace 1111 intersects with an extension direction of the connection trace 1121.

[0026] Specifically, Figure 3 As shown, the display panel provided in the embodiment of the present invention can be applied to a display device in which a sensor is arranged under the screen, and the display panel includes an optical component area 11, which can be used as an area for setting optical components, wherein the optical components can be devices such as cameras and infrared sensors, and the embodiment of the present invention does not limit this. Further, the display panel 10 provided in the embodiment of the present invention can also include a normal display area 12, which can be used as a normal display area in the display panel 10, that is, it does not need to have a large light transmittance.

[0027] Continue to refer Figure 4 and Figure 5 As shown, illustratively, the display panel 10 may further include a pixel circuit 13, and the pixel circuit 13 may be used to drive the light-emitting element in the display panel 10 to emit light. Specifically, the pixel circuit 13 may include a thin film transistor, or may include multiple thin film transistors and at least one storage capacitor, such as seven thin film transistors and one storage capacitor (7T1C). The embodiment of the present invention does not limit the specific structure of the pixel circuit 13. Furthermore, since the pixel circuit 13 includes multiple metal film layers, and the light transmittance of the metal film layers is poor, in order to ensure a larger light transmittance of the optical component area 11, the distribution density of the pixel circuit 13 in the optical component area 11 needs to be smaller than the distribution density of the pixel circuit 13 in the normal display area 12, or the area ratio of the pixel circuit 13 in the optical component area 11 (the unit area ratio of a single pixel circuit or the total area ratio of all pixel circuits) needs to be smaller than the area ratio of the pixel circuit 13 in the normal display area 12. Figure 4 and Figure 5In the description, only the distribution density of the pixel circuits 13 in the optical component area 11 needs to be smaller than the distribution density of the pixel circuits 13 in the normal display area 12 is used as an example. For example, the pixel circuits 13 may not be set in the optical component area 11, that is, the pixel circuits 13 are set externally. Whether the distribution density of the pixel circuits in the optical component area 11 needs to be smaller than the distribution density of the pixel circuits in the normal display area 12, or the area proportion of the pixel circuits in the optical component area 11 needs to be smaller than the area proportion of the pixel circuits in the normal display area 12, there are always various connection traces 1121 in the optical component area 11, wherein the connection traces 1121 can be electrically connected to the first light-emitting element 113, and are used to transmit display signals to the first light-emitting element 113. Since the setting of the connecting line 1121 will cause diffraction, which will deteriorate the imaging quality of the camera and affect the normal imaging function of the display panel, the embodiment of the present invention creatively sets a compensation structure 111 in the optical component area 11, and the compensation structure 111 includes a first compensation structure 111A. The first compensation structure 111A is further set to include at least one first compensation line 1111, and the extension direction of the first compensation line 1111 is set to intersect with the extension direction of the connecting line 1121. The diffraction problem caused by the original connecting line 1121 is weakened or eliminated by the first compensation line 1111, thereby improving the imaging quality of the optical component.

[0028] Optionally, the compensation structure 111 and the connection structure 112 may both be transparent structures, that is, the compensation structure 111 and the connection structure 112 may affect the light transmission performance of the optical component area 11 to a small extent.

[0029] Optionally, the compensation structure 111 may be a single-layer structure or a multi-layer structure, which is not limited in the embodiment of the present invention.

[0030] In the technical solution provided by the embodiment of the present invention, the diffraction problem caused by the original connecting line 112 is weakened or eliminated by the first compensating line 1111. The first compensating line 1111 may disrupt the regular arrangement of the original connecting line 1121, disrupt the original regular diffraction stripes, and weaken the diffraction problem; or the first compensating line 1111 cooperates with the connecting line 1121 to form other shapes where the diffraction phenomenon is not obvious, thereby weakening or eliminating the diffraction problem. The embodiment of the present invention does not limit the specific setting method of the first compensating line 1111, and the specific setting methods of the above two first compensating lines that weaken the diffraction phenomenon will be described in detail later.

[0031] Optionally, one end of the connecting wire 1121 is electrically connected to the first light emitting element 112, and the other end can be connected to the pixel circuit 13, such as Figure 4 or Figure 5or, when the driving mode of the pixel circuit 13 is one-drive-many, that is, when one pixel circuit 13 drives multiple light-emitting elements, the other end of the connecting wire 1121 can be connected to another first light-emitting element.

[0032] The embodiment of the present invention does not limit the extension direction of the connection line 1121, and can extend from the normal display area 12 to the optical component area 11, that is, along Figure 4 or Figure 5 The X direction shown. Further, since the connecting wire 1121 is generally arranged between two adjacent rows of light-emitting elements, the connecting wire 1121 can also be arranged to include a wire section extending along the X direction and a wire section along an extension direction at a certain angle to the X direction, for example, 45° or 135° to the X direction, so as to facilitate the electrical connection between the connecting wire 1121 and the first light-emitting element 113. At this time, the connecting wire 1121 has a fixed extension orientation, that is, part of the connecting wire extends along the X direction, and part of the connecting wire extends along a direction at a certain angle to the X direction. Such regularly arranged connecting wires 1121 are prone to diffraction problems. In an embodiment of the present invention, by arranging a compensation structure 111 in the setting area of ​​the connecting wire 1121, that is, in the optical component area 11, and by arranging the first compensation wire 1111, the diffraction problem caused by the connecting wire 1121 is compensated or eliminated, thereby improving the imaging quality of the optical component. Furthermore, the compensation structure 111 in the embodiment of the present invention is only provided in a relatively small area of ​​the optical component area 11, and during the preparation process of the compensation structure, no large-area etching will be performed on the display panel, and no large-area vacancies will be formed in the display panel, thereby ensuring the stability of the display panel structure.

[0033] In the technical solution provided by the embodiment of the present invention, since the light-emitting elements in the display panel 10 will generate heat during the light-emitting process, and the multi-layer metal film layer in the pixel circuit 13 has a good heat dissipation effect, the heat dissipation in the area with a large distribution density of the pixel circuit is good. Whether the distribution density of the pixel circuit in the optical component area 11 needs to be less than the distribution density of the pixel circuit in the normal display area 12, or the area ratio of the pixel circuit in the optical component area 11 needs to be less than the area ratio of the pixel circuit in the normal display area 12, the optical component area 11 has a problem of poor heat dissipation capacity. The compensation structure 111 in the embodiment of the present invention can also compensate for the heat dissipation capacity of the optical component area 11, ensure that the heat dissipation effect of the optical component area 11 is good, ensure that the heat dissipation capacity of the optical component area 11 is the same or similar to that of the normal display area 12, ensure that the heat has the same or similar effects on the light-emitting elements in the optical component area 11 and the light-emitting elements in the normal display area 12, ensure that the light-emitting effects of the light-emitting elements in the optical component area 11 and the normal display area 12 are the same or similar, and ensure that the display uniformity of the display panel is good.

[0034] In summary, the display panel provided by the embodiment of the present invention, by setting a compensation structure in the optical component area, further setting the compensation structure to include a first compensation structure, the first compensation structure includes at least one first compensation line, and by setting the extension direction of the first compensation line to intersect with the extension direction of the connecting line, the diffraction problem caused by the connecting line is compensated or eliminated, thereby improving the imaging quality of the optical component; further, the compensation structure can also improve the heat dissipation capacity of the first display area, thereby ensuring that the heat dissipation effect of the optical component area 11 is good.

[0035] Optional, continue to refer to Figure 4 , along the thickness direction of the display panel, the first compensation line 1111 overlaps the connection line 1121. The technical solution provided by the embodiment of the present invention disrupts the regular arrangement of the original connection line 1121 by setting the first compensation line 1111 to overlap with the connection line 1121, thereby achieving the purpose of disrupting the original regular diffraction stripes, weakening the diffraction problem in a single direction, and improving the imaging effect of the optical component area.

[0036] Optional, continue to refer to Figure 4 As shown, the extension direction of the first compensation trace 1111 is orthogonal to the extension direction of the connecting trace 1121, so that the first compensation trace 1111 and the connecting trace 1121 can form diffraction stripes that are approximately "cross" or circular, which can further weaken the diffraction phenomenon compared to the diffraction stripes in a single direction, and further improve the imaging effect of the optical component area.

[0037] Optional, continue to refer to Figure 4 As shown, the connecting trace 1121 includes a first connecting section 1121A and a second connecting section 1121B which are connected to each other, and an extension direction of the first connecting section 1121A intersects with an extension direction of the second connecting section 1121B; the first compensation trace 1111 includes a first compensation section 1111A and a second compensation section 1111B which are independently arranged, and an extension direction of the first compensation section 1111A intersects with an extension direction of the first connecting section 1121A, and an extension direction of the second compensation section 1111B intersects with an extension direction of the second connecting section 1121B.

[0038] For example, Figure 4As shown, the connecting line 1121 includes a first connecting section 1121A and a second connecting section 1121B which are connected to each other. The extension direction of the first connecting section 1121A is parallel to the direction in which the normal display area 12 points to the optical component area 11, that is, the first connecting section 1121A can extend along the X direction shown in the figure, which is convenient for guiding the display signal to the optical component area 11; the extension direction of the second connecting section 1121B forms a certain angle with the X direction shown in the figure, which is convenient for realizing electrical connection with the first light-emitting element. Correspondingly, the first compensation routing 1111 includes an independent first compensation section 1111A and a second compensation section 1111B. The extension direction of the first compensation section 1111A intersects with the extension direction of the first connection section 1121A, and is used to perform diffraction compensation on the first connection section 1121A; the extension direction of the second compensation section 1111B intersects with the extension direction of the second connection section 1121B, and is used to perform diffraction compensation on the second connection section 1121B, thereby ensuring that the connection routings in different extension directions are compensated, ensuring that the diffraction problems in different directions are weakened, and improving the imaging effect of the optical component area.

[0039] Optional, continue to refer to Figure 5 Along the thickness direction of the display device, the connection wiring 1121 is connected to the first compensation wiring 1111 to form a non-rectangular structure.

[0040] Exemplarily, in addition to the above-mentioned embodiment in which the diffraction problem is weakened by overlapping the first compensation line 1111 and the connecting line 1121, the first compensation line 1111 and the connecting line 1121 can also cooperate to form other shapes where the diffraction phenomenon is not obvious, thereby weakening or eliminating the diffraction problem. Specifically, since the diffraction phenomenon of the rectangular structure is obvious, the connecting line 1121 can be set to connect with the first compensation line 1111 to form a non-rectangular structure, that is, the first compensation line 1111 is connected with the connecting line 1121 that originally extends in a single direction to form a non-rectangular structure, which can further weaken the diffraction phenomenon compared to the diffraction stripes in a single direction, and further improve the imaging effect of the optical component area.

[0041] Based on the above embodiments, continue to refer to Figure 5 As shown, along the thickness direction of the display device, the connecting line 1121 is connected to the first compensation line 1111 to form a ring structure. For example, since the diffraction phenomenon of the ring structure is not obvious, the connecting line 1121 and the first compensation line 1111 can be set to form a ring structure, which can further weaken the diffraction phenomenon compared to the diffraction stripes in a single direction, and further improve the imaging effect of the optical component area. Specifically, the connecting line 1121 is connected to the first compensation line 1111 to form a ring structure. Figure 5The polygonal ring structure, quasi-circular ring structure or quasi-elliptical ring structure shown can weaken the diffraction phenomenon to a greater extent and improve the imaging effect of the optical component area compared to the diffraction stripes in a single direction.

[0042] Optional, Figure 6 for Figure 3 Another enlarged structural diagram at B in the figure is as follows: Figure 6 As shown, the compensation structure 111 also includes a second compensation structure 111B, and the second compensation structure 111B includes multiple second compensation traces 1112; the optical component area 11 includes a trace setting area 11A and a trace hollow area 11B, and the trace setting area 11A and the trace hollow area 11B do not overlap; the connecting trace 1121 is set in the trace setting area 11A, and the second compensation trace 1112 is at least set in the trace hollow area 11B.

[0043] Exemplarily, the compensation structure 111 includes a first compensation structure 111A and a second compensation structure 111B. The first compensation structure 111A is used to reduce or eliminate the diffraction problem caused by the connection wiring 112, and the second compensation structure 111B is used to eliminate or reduce the display problem caused by the uneven arrangement of the connection wiring 112. Figure 6 The pixel circuit 13 shown is set in the normal display area 12 for example. Since the first light-emitting element 113 in the optical component area 11 is electrically connected to the pixel circuit 13 through the connecting wire 112, for the side of the optical component area 11 close to the normal display area 12, the connecting wires in this area include the connecting wires connected to the first light-emitting element in this area and the connecting wires in other areas of the optical component area passing through this area. For the central area of ​​the optical component area 11, the connecting wires in this area only include the connecting wires connected to the first light-emitting element in this area. Therefore, for the optical component area 11, the connecting wire distribution density close to the normal display area 12 is the largest. The closer to the center of the optical component area 11, the smaller the distribution density of the connecting wire 12 is, which causes the uneven distribution of the connecting wires in the optical component area 11. When the connecting wires in the optical component area 11 are unevenly distributed, the lower film layers of the first light-emitting elements 11 in different areas are unevenly distributed, resulting in different light-emitting optical paths of the first light-emitting elements 11 in different areas of the optical component area 11, causing display mura. In the embodiment of the present invention, a second compensation structure 111B is provided in the optical component area 11, and the second compensation structure 111B is used to compensate for the problem of uneven distribution of connecting lines in different areas of the optical component area 11, thereby ensuring that the total distribution density of connecting lines in different areas of the optical component area 11 and the second compensation lines 1112 are the same or similar, ensuring that the light emitting optical paths of the first light-emitting elements 11 in different areas of the optical component area 11 are the same or similar, and ensuring that the display effect of the optical component area 11 is good.

[0044] Optional, continue to refer to Figure 6 As shown, the optical component area 11 includes a first sub-display area 11-1 and a second sub-display area 11-2, and the first sub-display area 11-1 is located on the side of the second sub-display area 11-2 close to the center of the optical component area 11; within a unit area, the coverage area of ​​the second compensation wiring 1112 and the connecting wiring 1121 in the first sub-display area 11-1 is S1, and the coverage area of ​​the second compensation wiring 1112 and the connecting wiring 1121 in the second sub-display area 11-2 is S2, wherein |S1-S2| / S1≤20%.

[0045] For example, Figure 6 As shown, the optical component area 11 includes a first sub-display area 11-1 and a second sub-display area 11-2, wherein the first sub-display area 11-1 is located on a side close to the center of the optical component area 11, and the second sub-display area 11-2 is located on a side close to the normal display area 12. As described above, the distribution density of the connecting wires 1121 in the second sub-display area 11-2 is greater than the distribution density of the connecting wires 1121 in the first sub-display area 11-1, so the distribution density of the second compensation wires 1112 in the second sub-display area 11-2 can be set to be less than the distribution density of the second compensation wires 1112 in the first sub-display area 11-1, that is, the problem of uneven distribution of connecting wires in different areas of the optical component area 11 is compensated by the second compensation wires 1112, so as to ensure that the total distribution density of connecting wires in different areas of the optical component area 11 and the second compensation wires 1112 are the same or similar. Specifically, the coverage area of ​​the second compensation routing 1112 and the connecting routing 1121 in the first sub-display area 11-1 is S1, and the coverage area of ​​the second compensation routing 1112 and the connecting routing 1121 in the second sub-display area 11-2 is S2, wherein |S1-S2| / S1≤20%, thereby ensuring that the total distribution density of the connecting routings and the second compensation routing 1112 in different areas of the optical component area 11 is the same or similar, ensuring that the light emitting optical paths of the first light-emitting elements 11 in different areas of the optical component area 11 are the same or similar, and ensuring that the display effect of the optical component area 11 is good.

[0046] Optionally, the second compensation trace 1112 includes a third compensation sub-portion 11121 and a fourth compensation sub-portion 11122 , and an extension direction of the third compensation sub-portion 11121 intersects with an extension direction of the fourth compensation sub-portion 11122 .

[0047] Specifically, in order to avoid the diffraction problem introduced by the setting of the second compensation line 1112, the second compensation line 1112 can be set to include a third compensation section 11121 and a fourth compensation section 11122, and the extension direction of the third compensation section 11121 is further set to intersect with the extension direction of the fourth compensation section 11122. In this way, the problem of uneven distribution density of connecting lines in different areas of the optical component area 11 can be compensated by the third compensation section 11121 and the fourth compensation section 11122, and the introduction of new diffraction problems by the second compensation line 1112 in a single direction can be avoided, thereby ensuring a good display effect of the optical component area 11 and improving the imaging effect of the optical component area. Furthermore, the extension direction of the third compensation section 11121 intersects with the extension direction of the fourth compensation section 11122, and it can be as follows Figure 6 The projections of the third compensation sub-section 11121 and the fourth compensation sub-section 11122 shown in the figure overlap, disrupting the single regular arrangement of the second compensation line, disrupting the regular diffraction stripes, and weakening the diffraction problem; the third compensation sub-section 11121 and the fourth compensation sub-section 11122 may also complement each other and intersect to form a non-rectangular structure, that is, cooperate to form other shapes with less obvious diffraction phenomenon, and weaken or eliminate the diffraction problem. The embodiment of the present invention does not limit the specific arrangement of the third compensation sub-section 11121 and the fourth compensation sub-section 11122.

[0048] Optional, Figure 7 for Figure 4 Schematic diagram of the cross-section structure along the section line C-C', combined with Figure 4 and Figure 7 As shown, the display panel 10 further includes a pixel circuit 13 , which includes a first thin film transistor 131 , which includes an oxide semiconductor active layer 1311 ; at least part of the film layer of the compensation structure 111 is disposed in the same layer as the oxide semiconductor active layer 1311 .

[0049] For example, Figure 7 As shown, the pixel circuit 13 includes a first thin film transistor 131, and the first thin film transistor 131 can be an oxide semiconductor transistor, that is, the active layer of the first thin film transistor 131 is an oxide semiconductor active layer, such as an indium gallium zinc oxide (IGZO) active layer. The leakage current in the oxide semiconductor transistor is very small, which can ensure that the leakage current is small during the operation of the pixel circuit 13, and ensure that the pixel circuit 13 has good performance.

[0050] Optionally, the oxide semiconductor active layer 1311 is a transparent structure, and at least a portion of the film layer of the compensation structure 111 is arranged on the same layer as the oxide semiconductor active layer 1311. It can further be prepared in the same process. On the one hand, it can ensure that the compensation structure 111 is a transparent structure, and ensure that the setting of the compensation structure 111 will not affect the light transmittance of the optical component area 11; on the other hand, at least a portion of the film layer of the compensation structure 111 is arranged on the same layer as the oxide semiconductor active layer 1311, which can also ensure that the setting method of the compensation structure 111 is simple, without adding a separate mask process, which is conducive to realizing a thin design of the display panel.

[0051] Optional, continue to refer to Figure 7 As shown, the pixel circuit 13 further includes a second thin film transistor 132 , and the second thin film transistor 132 includes a polysilicon active layer 1321 .

[0052] For example, Figure 7 As shown, the pixel circuit 13 also includes a second thin film transistor 132, and the second thin film transistor 132 can be a polysilicon body transistor, that is, the active layer of the second thin film transistor 132 is a polysilicon active layer, such as a low temperature polysilicon (LTPS) active layer. The polysilicon body transistor has the advantages of high switching speed, high carrier mobility, and low power consumption, which can ensure that the pixel circuit 13 has the advantages of fast response and low power consumption. Further, the pixel circuit 13 provided in the embodiment of the present invention combines oxide semiconductor transistors and polysilicon body transistors, which can give full play to the advantages of the two thin film transistors and ensure that the display device has good display performance.

[0053] Optionally, the compensation structure potential is floating or electrically connected to the display signal terminal.

[0054] Specifically, the compensation structure potential may be floating.

[0055] Potential floating can be understood as the compensation structure is not connected to the circuit elements, and no voltage signal is applied to the compensation structure without considering signal interference. The diffraction problem or uneven distribution density problem caused by the connecting wiring in the optical component area is compensated by setting a potential floating compensation structure, thereby reducing or eliminating the diffraction problem caused by the connecting wiring, and at the same time eliminating or reducing the display problem caused by the uneven setting of the connecting wiring. Furthermore, since the compensation structure is in a floating potential and is not connected to the circuit elements, the setting method of the compensation structure is simple; and since the compensation structure is in a floating potential, the setting of the compensation structure will not interfere with the normal light-emitting display of the first light-emitting element, thereby ensuring that the first light-emitting element in the optical component area has a good display effect.

[0056] Specifically, the compensation structure can be electrically connected to the display signal end, that is, a display signal can be transmitted in the compensation structure. Among them, the compensation structure can be electrically connected to the display signal end, and the display signal can be understood as a signal required for the normal light emission of the light-emitting element, that is, the compensation structure has the function of compensating for the diffraction problem and the uneven distribution problem caused by the connection wiring, and at the same time has the function of transmitting the display signal. Furthermore, by transmitting the display signal through the compensation structure, for example, by setting the compensation structure in parallel with other structures or film layers that transmit the display signal, the transmission impedance of the display signal can be reduced, the attenuation of the display signal during the transmission process can be reduced, and the transmission efficiency of the display signal can be improved.

[0057] The specific setting method of the display signal terminal is described below.

[0058] First, the structure of the pixel circuit is briefly described.

[0059] Figure 8 A schematic diagram of a pixel circuit according to an embodiment of the present invention is provided. Figure 8 The following description will be made by taking the pixel circuit 13 including seven transistors and one capacitor as an example. Figure 8 As shown, the pixel circuit 13 may include a first power signal line PVDD and reset signal lines Vref 1 and Vref 2. The first power signal line PVDD is used to provide a first voltage signal to the anode of the light-emitting element. The reset signal lines Vref 1 and Vref 2 are used to provide reset signals to different transistors respectively. For example, the reset signal line Vref 1 is used to provide a reset signal to the transistor M5, and the reset signal line Vref 2 is used to provide a reset signal to the transistor M7. Further, the display panel also includes a second power signal line PVEE (not shown in the figure). The second power signal line PVEE is used to provide a second voltage signal to the cathode of the light-emitting element to ensure that the light-emitting element emits light normally. It should be noted that the pixel circuit 13 also includes other signal lines, other transistors and a storage capacitor Cst. For example, the other signal lines may include a data signal line DATA, a scan signal line SCAN P, a scan signal line SCAN N and a light-emitting control signal line EMIT. For example, other transistors may include a first light-emitting control transistor M1, a data writing transistor M2, a driving transistor M3, a threshold compensation transistor M4 and a second light-emitting control transistor M6. The working process and connection relationship of each transistor are not repeated here.

[0060] Correspondingly, the display signal terminal may include a power supply voltage signal terminal or a reset signal terminal, and the voltage signal terminal may be a first power supply voltage signal terminal and a second power supply voltage signal terminal, and the first power supply voltage signal terminal and the second power supply voltage signal terminal may correspond to a high power supply voltage signal terminal and a low power supply voltage signal terminal, respectively. By setting the display signal terminal to include a power supply voltage signal terminal, the compensation structure 111 may be connected in parallel with a transmission film layer or structure of the power supply voltage signal, which may reduce the transmission impedance of the power supply voltage signal, reduce the attenuation of the power supply voltage signal during the transmission process, and improve the transmission efficiency of the power supply voltage signal. By setting the display signal terminal to include a reset signal terminal, the compensation structure may be connected in parallel with a transmission film layer or structure of the reset signal, which may reduce the transmission impedance of the reset signal, reduce the attenuation of the reset signal during the transmission process, and improve the transmission efficiency of the reset signal.

[0061] Furthermore, the power supply voltage signal terminal can be arranged in the same layer as the source and drain of the oxide semiconductor transistor (not shown in the figure), so that the compensation structure can be punched upward to be electrically connected to the power supply voltage signal terminal, ensuring that the connection relationship between the compensation structure and the power supply voltage signal terminal is simple. The reset signal terminal can be arranged in the same layer as a capacitor plate of the storage capacitor Cst (not shown in the figure), so that the compensation structure can be punched downward to be electrically connected to the reset signal terminal, ensuring that the connection relationship between the compensation structure and the reset signal terminal is simple.

[0062] In summary, by reasonably setting the display signal terminal, the connection method between the compensation structure and the display signal terminal can be simple while ensuring that the transmission impedance of the display signal can be reduced.

[0063] Based on the above embodiments, continue to refer to Figure 4 As shown, the display panel 10 also includes a first display area 21 and a second display area 22; the first display area 21 surrounds at least part of the optical component area 11, and the second display area 22 surrounds at least part of the first display area 21; the first display area 21 includes a plurality of second light-emitting elements 121, and the second display area 22 includes a plurality of third light-emitting elements 122; the display panel 10 also includes a pixel circuit 13, the pixel circuit 13 includes a first pixel circuit 13-1 and a second pixel circuit 13-2, the first pixel circuit 13-1 is located in the first display area 21, and the second pixel circuit 13-2 is located in the second display area 22; the first pixel circuit 13-1 is electrically connected to the second light-emitting element 121 and the first light-emitting element 133, respectively, and the second pixel circuit 13-2 is electrically connected to the third light-emitting element 122.

[0064] For example, Figure 4As shown, the display panel 10 further includes a first display area 21 and a second display area 22; the first display area 21 surrounds at least a portion of the optical component area 11, and the second display area 22 surrounds at least a portion of the first display area 21. Here, the first display area 21 can be understood as a transitional display area, and the second display area 22 can be understood as a normal display area 12. Generally speaking, the optical component area 11 can be used as a high light transmittance display area, for example, the distribution density of the pixel circuits in the optical component area 11 can be set to be relatively small or the area of ​​the pixel circuits in the optical component area 11 can be set to be relatively small. The transition display area serves as a transition area between the normal display area and the high-transmittance display area. The distribution density of pixel circuits in the transition display area can be between the distribution density of pixel circuits in the high-transmittance display area and the distribution density of pixel circuits in the normal display area, that is, the distribution density of pixel circuits 21 in the first display area can be between the distribution density of pixel circuits in the optical component area 11 and the distribution density of pixel circuits in the second display area 22. Alternatively, the area ratio of pixel circuits in the transition display area can be between the area ratio of pixel circuits in the high-transmittance display area and the area ratio of pixel circuits in the normal display area, that is, the area ratio of pixel circuits 21 in the first display area can be between the area ratio of pixel circuits in the optical component area 11 and the area ratio of pixel circuits in the second display area 22; and / or, the distribution density of light-emitting elements in the transition display area can be between the distribution density of light-emitting elements in the high-transmittance display area and the distribution density of light-emitting elements in the normal display area, that is, the distribution density of light-emitting elements in 21 in the first display area is greater than the distribution density of light-emitting elements in the optical component area 11, and less than the distribution density of light-emitting elements in the second display area 22. Figure 4 The distribution density of the pixel circuits in the first display area 21 is only between the distribution density of the pixel circuits in the optical component area 11 and the distribution density of the pixel circuits in the second display area 22, and the distribution density of the light-emitting elements in the first display area 21 is equal to the distribution density of the light-emitting elements in the optical component area 11. In this way, the display effect between the optical component area and the second display area can be ensured to transition normally, avoiding obvious display differences.

[0065] Further, the first pixel circuit 13-1 is used to drive the second light emitting element 121 and the first light emitting element 113, which can be understood as the first pixel circuit 13-1 is used to drive the second light emitting element 121 and the first light emitting element 113 at the same time, that is, a solution of using one first pixel circuit 13-1 to drive multiple light emitting elements is adopted, such as Figure 4 or, part of the first pixel circuit 13-1 is used to drive the first light emitting element 131, and the rest of the first pixel circuit 13-1 is used to drive the second light emitting element 121 (not shown in the figure). The embodiment of the present invention does not limit the correspondence between the pixel circuit and the light emitting element.

[0066] Based on the same inventive concept, an embodiment of the present invention further provides a display device, Fig. 9 A schematic diagram of a display device according to an embodiment of the present invention is shown in FIG. Fig. 9 As shown, the display device 100 includes the display panel 10 described in any embodiment of the present invention. Therefore, the display device 100 provided by the embodiment of the present invention has the technical effect of the technical solution in any of the above embodiments, and the explanation of the same or corresponding structures and terms as the above embodiments will not be repeated here. The display device 100 provided by the embodiment of the present invention can be Fig.10 The mobile phone shown can also be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, medical equipment, industrial control equipment, touch interactive terminals, etc. The embodiments of the present invention do not specifically limit this.

[0067] Fig.10 A schematic diagram of a cross-sectional structure of a display device provided by an embodiment of the present invention is shown in FIG. Fig. 9 and Fig.10 As shown, optionally, the display device provided in the embodiment of the present invention further includes a sensor 20 , and the sensor 20 is arranged corresponding to the optical component area 11 .

[0068] Among them, the sensor 20 may include any photosensitive element such as a camera and an infrared sensor. By setting the sensor 20 corresponding to the optical component area 11, and setting the distribution density of the pixel circuits in the optical component area 11 to be smaller than the distribution density of the pixel circuits in the normal display area, and / or setting the area ratio of the pixel circuits in the optical component area 11 to be smaller than the area ratio of the pixel circuits in the normal display area, the light transmission effect of the optical component area 11 is improved, ensuring that the sensor 20 can receive light normally and work normally. Furthermore, the optical component area 11 includes a compensation structure, which compensates for the diffraction problem caused by the setting of the connection wiring in the optical component area 11 or the display problem caused by the uneven distribution of the connection wiring, thereby improving the imaging quality and display effect of the optical component area 11.

[0069] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: comprising an optical component area, wherein the optical component area comprises a compensation structure, a connection structure and a first light emitting element; The compensation structure includes a first compensation structure, and the first compensation structure includes at least one first compensation trace; The connection structure includes a connection wire, and the connection wire is electrically connected to the first light-emitting element; Wherein, an extension direction of the first compensation line intersects with an extension direction of the connection line.

2. The display panel according to claim 1, characterized in that: Along the thickness direction of the display panel, the first compensation wiring overlaps with the connection wiring.

3. The display panel according to claim 2, characterized in that: An extension direction of the first compensation line is orthogonal to an extension direction of the connection line.

4. The display panel according to claim 2, characterized in that: The connecting line comprises a first connecting section and a second connecting section connected to each other, wherein an extending direction of the first connecting section intersects an extending direction of the second connecting section; The first compensation trace includes a first compensation section and a second compensation section that are independently arranged. An extension direction of the first compensation section intersects with an extension direction of the first connection section. An extension direction of the second compensation section intersects with an extension direction of the second connection section.

5. The display panel according to claim 1, characterized in that: Along the thickness direction of the display panel, the connection wiring is connected to the first compensation wiring to form a non-rectangular structure.

6. The display panel according to claim 5, characterized in that: Along the thickness direction of the display panel, the connection wiring is connected to the first compensation wiring to form a ring structure.

7. The display panel according to claim 1, characterized in that: The compensation structure further includes a second compensation structure, wherein the second compensation structure includes a plurality of second compensation traces; The optical component area includes a routing setting area and a routing hollowing area, and the routing setting area and the routing hollowing area do not overlap; the connecting routing is arranged in the routing setting area, and the second compensation routing is at least arranged in the routing hollowing area.

8. The display panel according to claim 7, characterized in that: The second compensation trace includes a third compensation section and a fourth compensation section, and an extension direction of the third compensation section intersects with an extension direction of the fourth compensation section.

9. The display panel according to claim 7, characterized in that: The optical component area includes a first sub-display area and a second sub-display area, wherein the first sub-display area is located on a side of the second sub-display area close to the center of the optical component area; In a unit area, the coverage area of ​​the second compensation line and the connection line in the first sub-display area is S1, and the coverage area of ​​the second compensation line and the connection line in the second sub-display area is S2, wherein |S1-S2| / S1≤20%.

10. The display panel according to claim 1, characterized in that: The display panel further includes a pixel circuit, the pixel circuit includes a first thin film transistor, and the first thin film transistor includes an oxide semiconductor active layer; At least a portion of the film layer of the compensation structure is arranged in the same layer as the oxide semiconductor active layer.

11. The display panel according to claim 10, characterized in that: The pixel circuit further includes a second thin film transistor including a polysilicon active layer.

12. The display panel according to claim 1, characterized in that: The compensation structure has a floating potential or is electrically connected to a display signal terminal.

13. The display panel according to claim 12, characterized in that: The display signal terminal includes a power supply voltage signal terminal or a reset signal terminal.

14. The display panel according to claim 1, characterized in that: The display panel further includes a first display area and a second display area; The first display area surrounds at least a portion of the optical component area, and the second display area surrounds at least a portion of the first display area; The first display area includes a plurality of second light emitting elements, and the second display area includes a plurality of third light emitting elements; The display panel also includes a pixel circuit, which includes a first pixel circuit and a second pixel circuit, the first pixel circuit is located in the first display area, and the second pixel circuit is located in the second display area; the first pixel circuit is electrically connected to the second light-emitting element and the first light-emitting element respectively, and the second pixel circuit is electrically connected to the third light-emitting element.

15. A display device comprising the display panel according to any one of claims 1 to 14.

16. The display device according to claim 15, characterized in that: Also includes: sensor; The sensor is arranged corresponding to the optical component area.

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