Display panel and display device

Abstract

The present invention discloses a display panel and a display device, relating to the field of display technologies. The display panel includes: a plurality of sub-pixels, each sub-pixel including a pixel circuit and a light-emitting element electrically connected thereto. The pixel circuit includes a first transistor, the first transistor including a first channel portion, the first channel portion including a bent portion, and the bent portion forms an opening. The opening of the first channel portion is arranged facing a first direction, and along a second direction, the directions of the openings of the first channel portions in two adjacent pixel circuits are opposite, wherein the first direction and the second direction intersect. The present invention is beneficial to improving the display effect of the display panel.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and more particularly, to a display panel and a display device. Background Art

[0002] An Organic Light Emitting Diode (OLED) display is an active light-emitting display device, which has the advantages of simple manufacturing process, low cost, high contrast ratio, wide viewing angle, low power consumption, etc., and has been widely used in digital products. It is one of the main technologies in new display technologies. Different from the traditional Liquid Crystal Display (LCD) display method, the OLED display technology does not require a backlight, and uses a very thin organic material coating and a glass substrate. When an electric current passes through, these organic materials will emit light. The OLED mainly controls the magnitude of the output current through a Thin Film Transistor (TFT), so as to display different brightness levels.

[0003] The existing OLED displays have the problem of poor display effect. Summary of the Invention

[0004] In view of this, the present invention provides a display panel and a display device, which are beneficial to improving the display effect of the display panel.

[0005] The present invention provides a display panel, including: a plurality of sub-pixels, the sub-pixels include a pixel circuit and a light-emitting element connected electrically, the pixel circuit includes a first transistor, the first transistor includes a first channel portion, the first channel portion includes a bent portion, and the bent portion forms an opening; the opening of the first channel portion is arranged in a first direction, and along a second direction, the directions of the openings of the first channel portions in two adjacent pixel circuits are opposite, wherein the first direction and the second direction intersect.

[0006] Based on the same concept, the present invention further provides a display device, including the display panel provided by the present invention.

[0007] Compared with the prior art, the display panel and the display device provided by the present invention achieve at least the following beneficial effects:

[0008] In the pixel circuit of the present invention, the first transistor includes a first channel portion. The first channel portion includes a bent portion, and the bent portion is bent to form an opening. The opening of the first channel portion is arranged towards the first direction, that is, the opening of the first channel portion is located on one side of the first channel portion along the first direction. Along the second direction, the directions of the openings of the first channel portions in two adjacent pixel circuits are opposite. Compared with the prior art where the directions of the openings of the first channel portions in two adjacent pixel circuits are the same along the second direction, setting the directions of the openings of the first channel portions in two adjacent pixel circuits along the second direction to be opposite effectively increases the distance between the first channel portions in two adjacent pixel circuits along the second direction, which is beneficial to reducing the coupling between the first channel portions in two adjacent pixel circuits along the second direction. Thus, it is beneficial to alleviate the adverse effects on the driving current generated by the pixel circuit, beneficial to alleviating the adverse effects on the emission brightness of the light-emitting element, and beneficial to improving the display effect of the display panel.

[0009] Of course, any product implementing the present invention does not necessarily need to achieve all the above-mentioned technical effects simultaneously.

[0010] Other features and advantages of the present invention will become clear from the following detailed description of the exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings incorporated in and constituting a part of this specification illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0012] Figure 1 is a schematic structural diagram of a structure in a display panel in the prior art;

[0013] Figure 2 is a schematic structural diagram of a display panel provided by the present invention;

[0014] Figure 3 is Figure 2 a schematic structural diagram of part A in the display panel described above;

[0015] Figure 4 is a circuit diagram of a pixel circuit provided by the present invention;

[0016] Figure 5 is a partial circuit layout of another display panel provided by the present invention;

[0017] Figure 6 is Figure 1 another schematic structural diagram of the display panel described above;

[0018] Figure 7 is Figure 2 another schematic structural diagram of part A in the display panel described above;

[0019] Figure 8 Yes Figure 2 Another schematic diagram of part A in the display panel described above;

[0020] Figure 9 It is a plan view of a display device provided by the present invention. Detailed implementation manners

[0021] Now, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps set forth in these embodiments, numerical expressions and values do not limit the scope of the present invention.

[0022] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as a limitation on the present invention, its application, or its use.

[0023] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered as part of the specification.

[0024] In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0025] It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0026] To improve the problem of poor display effect in the display panel, the inventor has conducted the following research: Figure 1 It is a schematic diagram of a structure in a display panel in the prior art. Refer to Figure 1 As shown, the display panel includes a plurality of sub-pixels 1 arranged in an array along a first direction X and a second direction Y. The sub-pixels 1 include a pixel circuit and a light-emitting element connected electrically. The pixel circuit includes a transistor, and the transistor includes a bent channel portion 2. The opening directions of the channel portions 2 in each sub-pixel 1 are the same. The distance between the channel portions 2 of two adjacent transistors along the second direction Y is small, so signal coupling is likely to occur between two adjacent transistors along the second direction Y, which has an adverse effect on the driving current generated by each pixel circuit, and thus has an adverse effect on the light-emitting brightness of the light-emitting element, resulting in the problem of poor display effect in the display panel.

[0027] Based on the above research, the present application provides a display panel and a display device, which are beneficial to improving the display effect of the display panel. Regarding the display panel provided by the present application with the above technical effects, the details are as follows:

[0028] Figure 2 is a schematic structural diagram of a display panel provided by the present invention, Figure 3 is Figure 2 a schematic structural diagram of part A in the display panel described above. It should be noted that, Figure 3 in order to clearly illustrate the technical points in this embodiment, only the structure of the first channel part is shown in the sub-pixel, which does not mean that the sub-pixel only includes the first channel part, Figure 3 the shown sub-pixel may further include other structures. Refer to Figure 2 and Figure 3 , this embodiment provides a display panel, including: a plurality of sub-pixels P, the sub-pixel P includes a pixel circuit 10 and a light-emitting element 20 that are electrically connected, the pixel circuit 10 includes a first transistor M1, the first transistor M1 includes a first channel part 30, the first channel part 30 includes a bent part 31, and the bent part 31 forms an opening 32;

[0029] The opening 32 of the first channel part 30 is arranged in the first direction X, and along the second direction Y, the directions of the openings of the first channel parts 30 in two adjacent pixel circuits 10 are opposite, wherein the first direction X and the second direction Y intersect. Optionally, the first direction X and the second direction Y are perpendicular to each other.

[0030] Specifically, the display panel provided in this embodiment may be an Organic Light Emitting Diode (OLED) display panel, and the display panel includes a plurality of sub-pixels P. Optionally, the plurality of sub-pixels P may include multiple different colors, such as at least a red sub-pixel, a green sub-pixel, a blue sub-pixel, and may also include a white sub-pixel, etc. The plurality of sub-pixels P may be arranged in an array on the display panel, or may also be in other arrangement manners. In this embodiment, Figure 2 only the example of the array arrangement of the plurality of sub-pixels P is used for illustration. It can be understood that in this embodiment, Figure 2 an example is given with the shape of the positive projection of a sub-pixel P on the light-emitting surface of the display panel being strip-shaped. Specifically, when implemented, the shape of the sub-pixel P includes but is not limited to this shape and can be designed according to actual requirements.

[0031] Such as Figure 2 shown, the sub-pixel P in this embodiment includes a pixel circuit 10 and a light-emitting element 20 that are electrically connected. Optionally, the light-emitting element 20 may be an organic light-emitting diode. The pixel circuit 10 is configured to transmit a light-emitting driving current to the light-emitting element 20 under the action of signals of driving signal lines (such as scan lines, data lines, voltage signal lines, etc., not shown in the figure) on the display panel, and provide a driving current for the light-emitting element 20 to make it emit light.

[0032] The pixel circuit 10 of this embodiment includes a first transistor M1. It can be understood that in specific implementation, the pixel circuit 10 includes but is not limited to the structure of this embodiment. The pixel circuit 10 may also include other structures that can enable the light-emitting element 20 to emit light, such as other transistors, capacitors and other structures, which will not be elaborated in this embodiment. For specific understanding, reference can be made to the structure of the pixel circuit 10 in the related art.

[0033] In the pixel circuit 10 of this embodiment, the first transistor M1 includes a first channel portion 30. The first channel portion 30 includes a bent portion 31. The bent portion 31 is bent to form an opening 32. The opening 32 of the first channel portion 30 is arranged in the first direction X, that is, the opening 32 of the first channel portion 30 is located on one side of the first channel portion 30 along the first direction X. In the second direction, the directions of the openings 32 of the first channel portions 30 in two adjacent pixel circuits 10 are opposite. Exemplarily, referring to Figure 3 , in the second direction Y, there are two adjacent sub-pixels P1 and P2. The direction of the opening 32a of the first channel portion 30a in the sub-pixel P1 is opposite to the direction of the opening 32b of the first channel portion 30b in the sub-pixel P2. Compared with the prior art in which the directions of the openings of the first channel portions in two adjacent pixel circuits in the second direction are the same, setting the directions of the openings 32 of the first channel portions 30 in two adjacent pixel circuits 10 in the second direction Y to be opposite effectively increases the distance between the first channel portions 30 in two adjacent pixel circuits 10 in the second direction Y, which is beneficial to reducing the coupling between the first channel portions 30 in two adjacent pixel circuits 10 in the second direction Y, which is beneficial to alleviating the adverse effects on the driving current generated by the pixel circuit 10, beneficial to alleviating the adverse effects on the light-emitting brightness of the light-emitting element 20, and beneficial to improving the display effect of the display panel.

[0034] It should be noted that generally, the size designs of the transistors that play the same role in each sub-pixel on the display panel tend to be the same.

[0035] It should be noted that in the embodiments of the present invention, the distance between the first channel portions 30 in two adjacent pixel circuits 10 refers to the distance between the protruding portions of the bent portions 31 where the openings 32 are formed in the first channel portions 30 in two adjacent pixel circuits 10. The protruding portion of the bent portion 31 where the opening 32 is formed in the first channel portion 30 of the first transistor M1 is the main component in the first channel portion 30. That is, the greater the distance between the protruding portions of the bent portions 31 where the openings 32 are formed in the first channel portions 30 in two adjacent pixel circuits 10, the smaller the adverse effect on the driving current generated by the pixel circuit 10. Generally, the transistors with the same function in each sub-pixel on the display panel tend to be in the same position in each sub-pixel. At this time, setting the directions of the openings 32 of the first channel portions 30 in two adjacent pixel circuits 10 along the second direction Y to be opposite is beneficial to increasing the distance between the first channel portions 30 in two adjacent pixel circuits 10 along the second direction Y. In some alternative embodiments, the positions of the first transistors M1 in two adjacent pixel circuits 10 along the second direction Y can be set at different positions on the premise of not affecting the arrangement of other components, that is, the position of the first transistor M1 in the pixel circuit 10 can be moved towards the direction of the opening 32 of the first channel portion 30, so as to further increase the distance between the first channel portions 30 in two adjacent pixel circuits 10 along the second direction Y.

[0036] Continue to refer to Figure 2 and Figure 3 , in some alternative embodiments, the first channel portion 30 is in a shape of a few characters, so that the bent portion 31 in the first channel portion 30 is bent to form the opening 32.

[0037] It should be noted that in this embodiment, the first channel portion 30 is exemplarily shown as being in a shape of a few characters. In other embodiments of the present invention, the first channel portion 30 may also be in a U shape or other structures having a bent portion 31, and the bent portion 31 is bent to form the opening 32. The present invention will not elaborate on this one by one here.

[0038] Continue to refer to Figure 2 and Figure 3 , in some alternative embodiments, the first channel portion 30 includes a first active portion 34, and the first active portion 34 includes a silicon semiconductor. That is, the first transistor M1 in this embodiment can be a silicon transistor, and the silicon can be polycrystalline silicon deposited by a low-temperature method, that is, LTPS (Low Temperature Poly-silicon) or low-temperature polycrystalline silicon. Of course, in other embodiments of the present invention, the first transistor M1 can also be an oxide semiconductor transistor, and the oxide semiconductor material such as amorphous indium gallium zinc oxide, that is, IGZO (Indium Gallium Zinc Oxide). Specifically, during implementation, it can be selected and set according to the design requirements of the display panel.

[0039] The shape of the first active portion 34 is the same as that of the first channel portion 30. That is, the vertical projection pattern of the first channel portion 30 on the plane where the display panel is located is the same as the vertical projection pattern of the first channel portion 30 on the plane where the display panel is located. Along the second direction Y, the directions of the openings 32 of the first channel portions 30 in two adjacent pixel circuits 10 are opposite, that is, along the second direction Y, the directions of the openings 32 of the first active portions 34 in two adjacent pixel circuits 10 are opposite.

[0040] Figure 4 is a circuit diagram of a pixel circuit provided by the present invention. Figure 5 is a partial circuit layout of another display panel provided by the present invention. Refer to Figure 2 , Figure 4 and Figure 5 , in some alternative embodiments, the first transistor M1 is a driving transistor of the pixel circuit 10, and the driving transistor of the pixel circuit 10 is used to form a driving current for driving the light-emitting element 20 to emit light.

[0041] Along the second direction Y, the directions of the openings 32 of the first channel portions 30 in the driving transistors of two adjacent pixel circuits 10 are opposite. Exemplarily, refer to Figure 5 , along the second direction Y, there are two adjacent sub-pixels P1 and P2, and the direction of the opening 32a of the first channel portion 30a in the first transistor M1a in the sub-pixel P1 is opposite to the direction of the opening 32b of the first channel portion 30b in the first transistor M1b in the sub-pixel P2. The first transistor M1a is a driving transistor in the pixel circuit 10a in the sub-pixel P1, and the first transistor M1b is a driving transistor in the pixel circuit 10b in the sub-pixel P2.

[0042] Setting the directions of the openings 32 of the first channel portions 30 in two adjacent pixel circuits 10 along the second direction Y to be opposite effectively increases the distance between the first channel portions 30 in the driving transistors of two adjacent pixel circuits 10 along the second direction Y, which is beneficial to reducing the coupling between the first channel portions 30 in the driving transistors of two adjacent pixel circuits 10 along the second direction Y, which is beneficial to alleviating the adverse effects on the driving current generated by the driving transistors of the pixel circuit 10, beneficial to alleviating the adverse effects on the light-emitting brightness of the light-emitting element 20, and beneficial to improving the display effect of the display panel.

[0043] It should be noted that Figure 4 and Figure 5 exemplarily show that the pixel circuit 10 in the display panel is a 7T1C pixel circuit. In other embodiments of the present invention, the pixel circuit 10 in the display panel may also be other types of pixel circuits. The structure of the driving transistor in the pixel circuit may be set with reference to the structure in the above embodiments, and the present invention will not elaborate herein one by one.

[0044] Reference Figure 2 、 Figure 4 and Figure 5 , in some alternative embodiments, the display panel includes a plurality of data lines LDATA extending along a first direction X and a plurality of first power supply signal lines LPVDD extending along the first direction X.

[0045] The source of the first transistor M1 is electrically connected to the data line LDATA and the first power supply signal line LPVDD. The drain of the first transistor M1 is electrically connected to the anode of the light-emitting element 20. The first transistor M1 is a driving transistor of the pixel circuit 10, and the first transistor M1 is used to form a driving current for driving the light-emitting element 20 to emit light.

[0046] Specifically, taking the Figure 4 shown pixel circuit as an example, the working principle of the pixel circuit is as follows:

[0047] In the initial reset stage, the fourth transistor M4 and the seventh transistor T7 are turned on, and the rest of the transistors are turned off. The potentials of the first node N1 and the fourth node N4 are reset signals provided by the reference voltage signal terminal VREF, that is, the gate of the first transistor M1 and the anode of the light-emitting element 20 are reset.

[0048] In the data writing and threshold grabbing stage, the third transistor M3, the fifth transistor M5, and the first transistor M1 are turned on, and the rest of the transistors are turned off. The potential of the second node N2 is the data voltage signal Vdata provided by the data voltage signal terminal DATA. The potentials of the first node N1 and the third node N3 are Vdata - |Vth|, where Vth is the threshold voltage of the first transistor M1.

[0049] In the light-emitting stage, the second transistor M2, the sixth transistor M6, and the first transistor M1 are turned on, and the rest of the transistors are turned off. The first voltage signal Vpvdd of the first voltage signal terminal PVDD is transmitted to the first transistor M1. The first transistor M1 generates a driving current to drive the light-emitting element 20 to emit light. The potential of the second node N2 is the first voltage signal Vpvdd, the potential of the first node N1 is Vdata - |Vth|, and the potential of the third node N3 is Vpvee + Voled, where Vpvee is the second voltage signal provided by the second power supply signal terminal PVEE and can be a negative potential, and Voled is the corresponding voltage on the light-emitting element 20. Then the light-emitting current Id = k(Vgs - |Vth|)2 = k(Vpvdd - Vdat a - |Vth|)2; where the constant k is related to the performance of the first transistor M1 itself.

[0050] The directions of the openings 32 of the first channel portions 30 in the first transistors M1 in two adjacent pixel circuits 10 along the second direction Y are set to be opposite, effectively increasing the distance between the first channel portions 30 in the first transistors M1 in two adjacent pixel circuits 10 along the second direction Y, thereby facilitating the reduction of the coupling between the first channel portions 30 in the first transistors M1 in two adjacent pixel circuits 10 along the second direction Y, thereby facilitating the mitigation of the adverse effects on the driving current generated by the first transistors M1 of the pixel circuits 10, facilitating the mitigation of the adverse effects on the emission brightness of the light-emitting elements 20, and facilitating the improvement of the display effect of the display panel.

[0051] Figure 6 Yes Figure 1 Another structural schematic diagram of the display panel described above, refer to Figure 1 And Figure 6 , in some alternative embodiments, a plurality of sub-pixels P are arranged in an array along a first direction X and a second direction Y.

[0052] The display panel includes a plurality of sub-pixel columns P10, and each sub-pixel column P10 includes a plurality of sub-pixels P arranged along the first direction X, and the plurality of sub-pixels P arranged along the first direction X form the sub-pixel column P10.

[0053] The sub-pixel column P10 includes at least one first sub-pixel column P11 and at least one second sub-pixel column P12. Among them, the directions of the openings 32 of the first channel portions 30 in the first sub-pixel column P11 are the same, the directions of the openings 32 of the first channel portions 30 in the second sub-pixel column P12 are the same, and the directions of the openings 32 of the first channel portions 30 in the first sub-pixel column P11 and the directions of the openings 32 of the first channel portions 30 in the second sub-pixel column P12 are opposite. Exemplarily, refer to Figure 6 , the first sub-pixel column P11 includes a plurality of sub-pixels P1 arranged along the first direction X, and the directions of the openings 32a of the first channel portions 30a in the sub-pixels P1 in the first sub-pixel column P11 are the same. The second sub-pixel column P12 includes a plurality of sub-pixels P2 arranged along the first direction X, and the directions of the openings 32b of the first channel portions 30b in the sub-pixels P2 in the second sub-pixel column P12 are the same. The direction of the opening 32a of the first channel portion 30a in the sub-pixel P1 in the first sub-pixel column P11 is opposite to the direction of the opening 32b of the first channel portion 30b in the sub-pixel P2 in the second sub-pixel column P12.

[0054] At least one first sub-pixel column P11 and a second sub-pixel column P12 are arranged adjacent to each other, so that the direction of the opening 32a of the first channel portion 30a in the sub-pixel P1 in the adjacent first sub-pixel column P11 is opposite to the direction of the opening 32b of the first channel portion 30b in the sub-pixel P2 in the second sub-pixel column P12. Thus, along the second direction Y, the direction of the opening 32a of the first channel portion 30a in the sub-pixel P1 in the first sub-pixel column P11 is opposite to the direction of the opening 32b of the first channel portion 30b in the sub-pixel P2 in the adjacent second sub-pixel column P12, effectively increasing the distance between the first channel portion 30a in the sub-pixel P1 in the first sub-pixel column P11 and the first channel portion 30b in the sub-pixel P2 in the adjacent second sub-pixel column P12 along the second direction Y. This is beneficial to reducing the coupling between the first channel portion 30a in the sub-pixel P1 in the first sub-pixel column P11 and the first channel portion 30b in the sub-pixel P2 in the adjacent second sub-pixel column P12 along the second direction Y, thus facilitating the mitigation of the adverse effects on the driving current generated by the pixel circuit 10 in the adjacent first sub-pixel column P11 and second sub-pixel column P12, facilitating the mitigation of the adverse effects on the light-emitting brightness of the light-emitting elements 20 in the adjacent first sub-pixel column P11 and second sub-pixel column P12, and facilitating the improvement of the display effect of the display panel.

[0055] Continue to refer to Figure 1 and Figure 6 In some alternative embodiments, the first sub-pixel columns P11 and the second sub-pixel columns P12 are arranged at intervals one by one, so that the direction of the opening 32 of the first channel portion 30 in each sub-pixel P in the display panel is opposite to the direction of the opening 32 of the first channel portion 30 in the sub-pixel P adjacent thereto along the second direction Y. This effectively increases the distance between the first channel portion 30 in each sub-pixel P in the display panel and the first channel portion 30 in the sub-pixel P adjacent thereto along the second direction Y, thus facilitating the reduction of the coupling between the first channel portion 30 in each sub-pixel P in the display panel and the first channel portion 30 in the sub-pixel P adjacent thereto along the second direction Y, facilitating the mitigation of the adverse effects on the driving current generated by the first transistor M1 of the pixel circuit 10 in each sub-pixel P, facilitating the mitigation of the adverse effects on the light-emitting brightness of each light-emitting element 20, and facilitating the improvement of the display effect of the display panel.

[0056] Figure 7 is Figure 2 Another schematic structural diagram of part A in the described display panel. Refer to Figure 2 and Figure 7 In some alternative embodiments, the sub-pixel P includes a first sub-pixel P1 and a second sub-pixel P2, and the direction of the opening 32a of the first channel portion 30a in the first sub-pixel P1 is opposite to the direction of the opening 32b of the first channel portion 30b in the second sub-pixel P2.

[0057] The display panel further includes a first metal part 41, which corresponds to each sub-pixel P one by one. That is, in the display panel, the first metal part 41 is provided in the area where the sub-pixel P is provided. It should be noted that the first metal part 41 can be a structure such as a metal trace in the display panel.

[0058] In the direction perpendicular to the plane of the display panel, the overlapping area between the first channel part 30a and the first metal part 41 in the first sub-pixel P1 is smaller than the overlapping area between the first channel part 30b and the first metal part 41 in the second sub-pixel P2.

[0059] Specifically, in the prior art, the transistors that play the same role in each sub-pixel on the display panel tend to be in the same position in each sub-pixel. And the positional relationship between the first channel part and the first metal part in each sub-pixel in the prior art display panel can be referred to Figure 7 the positional relationship between the first channel part 30a and the first metal part 41 in the first sub-pixel P1 in [reference], so that the light-transmitting area of the display panel is relatively small. When a fingerprint recognition unit is provided on the backlight surface of the display panel, it is not conducive to realizing the fingerprint recognition function.

[0060] In this embodiment, the direction of the opening 32a of the first channel part 30a in the first sub-pixel P1 and the direction of the opening 32b of the first channel part 30b in the adjacent second sub-pixel P2 are set to be opposite, effectively increasing the distance between the first channel part 30a in the first sub-pixel P1 and the first channel part 30b in the adjacent second sub-pixel P2. Thereby, it is beneficial to reduce the coupling between the first channel part 30a in the first sub-pixel P1 and the first channel part 30b in the adjacent second sub-pixel P2, which is beneficial to alleviating the adverse impact on the driving current generated by the first transistor M1, beneficial to alleviating the adverse impact on the light-emitting brightness of the light-emitting element 20, and beneficial to improving the display effect of the display panel. At the same time, setting the direction of the opening 32a of the first channel part 30a in the first sub-pixel P1 and the direction of the opening 32b of the first channel part 30b in the adjacent second sub-pixel P2 to be opposite makes the overlapping area between the first channel part 30a and the first metal part 41 in the first sub-pixel P1 smaller than the overlapping area between the first channel part 30b and the first metal part 41 in the second sub-pixel P2 in the direction perpendicular to the plane of the display panel. Thus, the overlapping area between the first channel part 30b and the first metal part 41 in the second sub-pixel P2 increases in the direction perpendicular to the plane of the display panel, which is beneficial to increasing the light-transmitting area of the display panel. When a fingerprint recognition unit is provided on the backlight surface of the display panel, it is beneficial to realize the fingerprint recognition function.

[0061] Figure 8 is Figure 2 Another schematic structural diagram of part A in the described display panel, refer to Figure 2 andFigure 8 In some alternative embodiments, the sub-pixel P includes a first sub-pixel P1 and a second sub-pixel P2. The directions of the openings 32a of the first channel portions 30a in the first sub-pixel P1 and the directions of the openings 32b of the first channel portions 30b in the second sub-pixel P2 are opposite to each other.

[0062] The display panel further includes a second metal portion 42. The second metal portions 42 correspond to the sub-pixels P one by one, that is, in the display panel, the second metal portions 42 are provided in the areas where the sub-pixels P are provided. It should be noted that the second metal portion 42 may be a structure such as a metal trace in the display panel.

[0063] In the direction perpendicular to the plane of the display panel, the first channel portion 30a in the first sub-pixel P1 does not overlap with the second metal portion 42, and the first channel portion 30b in the second sub-pixel P2 overlaps with the second metal portion 42 at least partially.

[0064] Specifically, in the prior art, the transistors that play the same role in each sub-pixel on the display panel tend to be in the same position in each sub-pixel. And the positional relationship between the first channel portion and the second metal portion in each sub-pixel in the prior art display panel can be referred to Figure 8 the positional relationship between the first channel portion 30a and the second metal portion 42 in the first sub-pixel P1, so that the light-transmitting area of the display panel is relatively small. When a fingerprint recognition unit is provided on the backlight surface of the display panel, it is not conducive to realizing the fingerprint recognition function.

[0065] In this embodiment, by setting the directions of the openings 32a of the first channel portions 30a in the first sub-pixel P1 and the directions of the openings 32b of the first channel portions 30b in the adjacent second sub-pixel P2 to be opposite, the distance between the first channel portion 30a in the first sub-pixel P1 and the first channel portion 30b in the adjacent second sub-pixel P2 is effectively increased, which is beneficial to reducing the coupling between the first channel portion 30a in the first sub-pixel P1 and the first channel portion 30b in the adjacent second sub-pixel P2. Thus, it is beneficial to alleviate the adverse effects on the driving current generated by the first transistor M1, beneficial to alleviating the adverse effects on the emission brightness of the light-emitting element 20, and beneficial to improving the display effect of the display panel. At the same time, by setting the directions of the openings 32a of the first channel portions 30a in the first sub-pixel P1 and the directions of the openings 32b of the first channel portions 30b in the adjacent second sub-pixel P2 to be opposite, in the direction perpendicular to the plane of the display panel, the first channel portion 30b in the second sub-pixel P2 overlaps with the second metal portion 42 at least partially, which is beneficial to increasing the light-transmitting area of the display panel. When a fingerprint recognition unit is provided on the backlight surface of the display panel, it is beneficial to realizing the fingerprint recognition function.

[0066] In some alternative embodiments, please refer to Figure 9 Figure 9It is a schematic plan view of a display device provided by the present invention. The display device 1000 provided in this embodiment includes the display panel 100 provided in the above embodiments of the present invention. Figure 9 In the embodiment, only a mobile phone is taken as an example to illustrate the display device 1000. It can be understood that the display device 1000 provided in the embodiments of the present invention can also be other display devices 1000 with a display function, such as a computer, a television, a vehicle-mounted display device, etc. The present invention does not make specific limitations thereto. The display device 1000 provided in the embodiments of the present invention has the beneficial effects of the display panel 100 provided in the embodiments of the present invention. For specific descriptions of the display panel 100, reference can be made to the above embodiments, and details are not repeated herein.

[0067] As can be seen from the above embodiments, the display panel and the display device provided by the present invention have at least achieved the following beneficial effects:

[0068] In the pixel circuit of the present invention, the first transistor includes a first channel portion, the first channel portion includes a bent portion, the bent portion is bent to form an opening, the opening of the first channel portion is arranged in a first direction, that is, the opening of the first channel portion is located on one side of the first channel portion along the first direction. Along a second direction, the directions of the openings of the first channel portions in two adjacent pixel circuits are opposite. Compared with the prior art in which the directions of the openings of the first channel portions in two adjacent pixel circuits are the same along the second direction, setting the directions of the openings of the first channel portions in two adjacent pixel circuits along the second direction to be opposite effectively increases the distance between the first channel portions in two adjacent pixel circuits along the second direction, which is beneficial to reducing the coupling between the first channel portions in two adjacent pixel circuits along the second direction, which is beneficial to alleviating the adverse effects on the driving current generated by the pixel circuit, beneficial to alleviating the adverse effects on the emission brightness of the light-emitting element, and beneficial to improving the display effect of the display panel.

[0069] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A display panel, characterized in that, Including: A plurality of sub-pixels, the sub-pixels including a pixel circuit and a light-emitting element that are electrically connected, the pixel circuit including a first transistor, the first transistor including a first channel portion, the first channel portion including a bent portion, and the bent portion forming an opening; The opening of the first channel portion is arranged in a first direction, and along a second direction, the directions of the openings of the first channel portions in two adjacent pixel circuits are opposite, wherein the first direction and the second direction intersect; The sub-pixels include a first sub-pixel and a second sub-pixel, and the direction of the opening of the first channel portion in the first sub-pixel is opposite to the direction of the opening of the first channel portion in the second sub-pixel; The display panel further includes a first metal portion, the first metal portion corresponding to the sub-pixels one by one; in a direction perpendicular to the plane of the display panel, the overlapping area between the first channel portion in the first sub-pixel and the first metal portion is smaller than the overlapping area between the first channel portion in the second sub-pixel and the first metal portion; or, the display panel further includes a second metal portion, the second metal portion corresponding to the sub-pixels one by one; in a direction perpendicular to the plane of the display panel, the first channel portion in the first sub-pixel does not overlap with the second metal portion, and the first channel portion in the second sub-pixel at least partially overlaps with the second metal portion.

2. The display panel according to claim 1, wherein: The first transistor is a driving transistor of the pixel circuit.

3. The display panel according to claim 2, wherein: The display panel includes a plurality of data lines extending along the first direction and a plurality of first power signal lines extending along the first direction; The source electrode of the first transistor is electrically connected to the data line and the first power signal line, and the drain electrode of the first transistor is electrically connected to the anode of the light-emitting element.

4. The display panel according to claim 1, wherein: The plurality of sub-pixels are arranged in an array along the first direction and the second direction; The display panel includes a plurality of sub-pixel columns, and each sub-pixel column includes a plurality of the sub-pixels arranged along the first direction; The sub-pixel column includes at least one first sub-pixel column and at least one second sub-pixel column, and at least one first sub-pixel column and one second sub-pixel column are adjacent to each other; The directions of the openings of the first channel portions in the first sub-pixel column are the same, the directions of the openings of the first channel portions in the second sub-pixel column are the same, and the direction of the opening of the first channel portion in the first sub-pixel column is opposite to the direction of the opening of the first channel portion in the second sub-pixel column.

5. The display panel according to claim 4, wherein: The first sub-pixel column and the second sub-pixel column are arranged at intervals one by one.

6. The display panel according to claim 1, wherein: The first channel portion includes a first active portion, and the first active portion includes a silicon semiconductor; The shape of the first active portion is the same as the shape of the first channel portion.

7. The display panel according to claim 1, wherein the first channel portion is in a shape of a capital "J" or a "U".

8. A display device, characterized in that, The display device includes the display panel according to any one of claims 1-7.

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